SafeHeap: Handle overflows when adding the pointer and the size (#6409)

E.g. loading 4 bytes from 2^32 - 2 should error: 2 bytes are past the maximum address. Before this PR we added 2^32 - 2 + 4 and overflowed to 2, which we saw as a low and safe address. This PR adds an extra check for an overflow in that add. Also add unreachables after calls to segfault(), which reduces the overhead of the extra check here (the unreachable apparently allows VMs to see that control flow ends, after the segfault() which is truly no-return). Fixes emscripten-core/emscripten#21557
author: Alon Zakai <azakai@google.com> 2024-07-12 13:37:40 -0700
committer: GitHub <noreply@github.com> 2024-07-12 13:37:40 -0700
commit: 0e0e08db6280dec4f4fcce2dff3ba07445c45b8a (patch)
tree: c97e58534072cac88bcc685dda3dff49b1cbd20f
parent: c0286b61a0eedde936ce1adff4284859ce4c6510 (diff)
download: binaryen-0e0e08db6280dec4f4fcce2dff3ba07445c45b8a.tar.gz
binaryen-0e0e08db6280dec4f4fcce2dff3ba07445c45b8a.tar.bz2
binaryen-0e0e08db6280dec4f4fcce2dff3ba07445c45b8a.zip
6 files changed, 11980 insertions, 5525 deletions
diff --git a/src/passes/SafeHeap.cpp b/src/passes/SafeHeap.cpp
index b2f7db567..7baeb365e 100644
--- a/src/passes/SafeHeap.cpp
+++ b/src/passes/SafeHeap.cpp
@@ -288,6 +288,7 @@ struct SafeHeap : public Pass {
     auto func = Builder::makeFunction(name, funcSig, {indexType});
     Builder builder(*module);
     auto* block = builder.makeBlock();
+    // stash the sum of the pointer (0) and the size (1) in a local (2)
     block->list.push_back(builder.makeLocalSet(
       2,
       builder.makeBinary(memory->is64() ? AddInt64 : AddInt32,
@@ -296,6 +297,7 @@ struct SafeHeap : public Pass {
     // check for reading past valid memory: if pointer + offset + bytes
     block->list.push_back(makeBoundsCheck(style.type,
                                           builder,
+                                          0,
                                           2,
                                           style.bytes,
                                           module,
@@ -346,6 +348,7 @@ struct SafeHeap : public Pass {
     // check for reading past valid memory: if pointer + offset + bytes
     block->list.push_back(makeBoundsCheck(style.valueType,
                                           builder,
+                                          0,
                                           3,
                                           style.bytes,
                                           module,
@@ -386,9 +389,14 @@ struct SafeHeap : public Pass {
       builder.makeCall(alignfault, {}, Type::none));
   }
 
+  // Constructs a bounds check. This receives the indexes of two locals: the
+  // pointer local, which contains the pointer we are checking, and the sum
+  // local which contains the pointer added to the number of bytes being
+  // accessed.
   Expression* makeBoundsCheck(Type type,
                               Builder& builder,
-                              Index local,
+                              Index ptrLocal,
+                              Index sumLocal,
                               Index bytes,
                               Module* module,
                               Type indexType,
@@ -415,19 +423,33 @@ struct SafeHeap : public Pass {
     }
     auto gtuOp = is64 ? GtUInt64 : GtUInt32;
     auto addOp = is64 ? AddInt64 : AddInt32;
+    auto* upperCheck =
+      builder.makeBinary(upperOp,
+                         builder.makeLocalGet(sumLocal, indexType),
+                         builder.makeConstPtr(upperBound, indexType));
+    auto* lowerCheck = builder.makeBinary(
+      gtuOp,
+      builder.makeBinary(addOp,
+                         builder.makeLocalGet(sumLocal, indexType),
+                         builder.makeConstPtr(bytes, indexType)),
+      brkLocation);
+    // Check for an overflow when adding the pointer and the size, using the
+    // rule that for any unsigned x and y,
+    //    x + y < x    <=>   x + y overflows
+    auto* overflowCheck =
+      builder.makeBinary(is64 ? LtUInt64 : LtUInt32,
+                         builder.makeLocalGet(sumLocal, indexType),
+                         builder.makeLocalGet(ptrLocal, indexType));
+    // Add an unreachable right after the call to segfault for performance
+    // reasons: the call never returns, and this helps optimizations benefit
+    // from that.
     return builder.makeIf(
       builder.makeBinary(
         OrInt32,
-        builder.makeBinary(upperOp,
-                           builder.makeLocalGet(local, indexType),
-                           builder.makeConstPtr(upperBound, indexType)),
-        builder.makeBinary(
-          gtuOp,
-          builder.makeBinary(addOp,
-                             builder.makeLocalGet(local, indexType),
-                             builder.makeConstPtr(bytes, indexType)),
-          brkLocation)),
-      builder.makeCall(segfault, {}, Type::none));
+        upperCheck,
+        builder.makeBinary(OrInt32, lowerCheck, overflowCheck)),
+      builder.makeSequence(builder.makeCall(segfault, {}, Type::none),
+                           builder.makeUnreachable()));
   }
 };
 
diff --git a/test/passes/safe-heap_disable-simd.txt b/test/passes/safe-heap_disable-simd.txt
index bb55667b1..e3ff8f6c2 100644
--- a/test/passes/safe-heap_disable-simd.txt
+++ b/test/passes/safe-heap_disable-simd.txt
@@ -27,18 +27,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 1)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load8_s
@@ -59,18 +66,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load8_u
@@ -91,18 +105,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load16_s align=1
@@ -123,18 +144,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -164,18 +192,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load16_u align=1
@@ -196,18 +231,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -237,18 +279,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load align=1
@@ -269,18 +318,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -310,18 +366,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -351,18 +414,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load8_s
@@ -383,18 +453,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load8_u
@@ -415,18 +492,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load16_s align=1
@@ -447,18 +531,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -488,18 +579,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load16_u align=1
@@ -520,18 +618,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -561,18 +666,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load32_s align=1
@@ -593,18 +705,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -634,18 +753,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -675,18 +801,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load32_u align=1
@@ -707,18 +840,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -748,18 +888,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -789,18 +936,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load align=1
@@ -821,18 +975,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -862,18 +1023,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -903,18 +1071,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -944,18 +1119,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f32.load align=1
@@ -976,18 +1158,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1017,18 +1206,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1058,18 +1254,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f64.load align=1
@@ -1090,18 +1293,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1131,18 +1341,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1172,18 +1389,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1213,18 +1437,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store8
@@ -1246,18 +1477,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store16 align=1
@@ -1279,18 +1517,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1321,18 +1566,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store align=1
@@ -1354,18 +1606,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1396,18 +1655,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1438,18 +1704,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store8
@@ -1471,18 +1744,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store16 align=1
@@ -1504,18 +1784,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1546,18 +1833,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store32 align=1
@@ -1579,18 +1873,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1621,18 +1922,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1663,18 +1971,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store align=1
@@ -1696,18 +2011,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1738,18 +2060,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1780,18 +2109,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1822,18 +2158,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f32.store align=1
@@ -1855,18 +2198,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1897,18 +2247,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1939,18 +2296,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f64.store align=1
@@ -1972,18 +2336,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2014,18 +2385,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2056,18 +2434,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2114,18 +2499,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load8_s
@@ -2146,18 +2538,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load8_u
@@ -2178,18 +2577,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load16_s align=1
@@ -2210,18 +2616,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2251,18 +2664,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load16_u align=1
@@ -2283,18 +2703,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2324,18 +2751,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load align=1
@@ -2356,18 +2790,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2397,18 +2838,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2438,18 +2886,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load8_s
@@ -2470,18 +2925,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load8_u
@@ -2502,18 +2964,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load16_s align=1
@@ -2534,18 +3003,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2575,18 +3051,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load16_u align=1
@@ -2607,18 +3090,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2648,18 +3138,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load32_s align=1
@@ -2680,18 +3177,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2721,18 +3225,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2762,18 +3273,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load32_u align=1
@@ -2794,18 +3312,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2835,18 +3360,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2876,18 +3408,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load align=1
@@ -2908,18 +3447,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2949,18 +3495,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2990,18 +3543,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3031,18 +3591,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f32.load align=1
@@ -3063,18 +3630,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3104,18 +3678,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3145,18 +3726,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f64.load align=1
@@ -3177,18 +3765,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3218,18 +3813,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3259,18 +3861,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3300,18 +3909,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store8
@@ -3333,18 +3949,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store16 align=1
@@ -3366,18 +3989,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3408,18 +4038,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store align=1
@@ -3441,18 +4078,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3483,18 +4127,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3525,18 +4176,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store8
@@ -3558,18 +4216,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store16 align=1
@@ -3591,18 +4256,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3633,18 +4305,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store32 align=1
@@ -3666,18 +4345,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3708,18 +4394,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3750,18 +4443,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store align=1
@@ -3783,18 +4483,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3825,18 +4532,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3867,18 +4581,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3909,18 +4630,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f32.store align=1
@@ -3942,18 +4670,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3984,18 +4719,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4026,18 +4768,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f64.store align=1
@@ -4059,18 +4808,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4101,18 +4857,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4143,18 +4906,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4209,18 +4979,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load8_s
@@ -4241,18 +5018,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load8_u
@@ -4273,18 +5057,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load16_s align=1
@@ -4305,18 +5096,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4346,18 +5144,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load16_u align=1
@@ -4378,18 +5183,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4419,18 +5231,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load align=1
@@ -4451,18 +5270,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4492,18 +5318,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4533,18 +5366,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load8_s
@@ -4565,18 +5405,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load8_u
@@ -4597,18 +5444,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load16_s align=1
@@ -4629,18 +5483,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4670,18 +5531,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load16_u align=1
@@ -4702,18 +5570,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4743,18 +5618,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load32_s align=1
@@ -4775,18 +5657,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4816,18 +5705,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4857,18 +5753,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load32_u align=1
@@ -4889,18 +5792,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4930,18 +5840,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4971,18 +5888,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load align=1
@@ -5003,18 +5927,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5044,18 +5975,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5085,18 +6023,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5126,18 +6071,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f32.load align=1
@@ -5158,18 +6110,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5199,18 +6158,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5240,18 +6206,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f64.load align=1
@@ -5272,18 +6245,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5313,18 +6293,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5354,18 +6341,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5395,18 +6389,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store8
@@ -5428,18 +6429,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store16 align=1
@@ -5461,18 +6469,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5503,18 +6518,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store align=1
@@ -5536,18 +6558,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5578,18 +6607,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5620,18 +6656,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store8
@@ -5653,18 +6696,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store16 align=1
@@ -5686,18 +6736,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5728,18 +6785,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store32 align=1
@@ -5761,18 +6825,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5803,18 +6874,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5845,18 +6923,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store align=1
@@ -5878,18 +6963,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5920,18 +7012,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5962,18 +7061,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6004,18 +7110,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f32.store align=1
@@ -6037,18 +7150,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6079,18 +7199,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6121,18 +7248,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f64.store align=1
@@ -6154,18 +7288,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6196,18 +7337,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6238,18 +7386,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
diff --git a/test/passes/safe-heap_enable-threads_enable-simd.txt b/test/passes/safe-heap_enable-threads_enable-simd.txt
index aeea4f02c..ffc912a3c 100644
--- a/test/passes/safe-heap_enable-threads_enable-simd.txt
+++ b/test/passes/safe-heap_enable-threads_enable-simd.txt
@@ -198,18 +198,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.shr_s
@@ -236,18 +243,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load8_s
@@ -268,18 +282,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.atomic.load8_u
@@ -300,18 +321,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load8_u
@@ -332,18 +360,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load16_s align=1
@@ -364,18 +399,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -411,18 +453,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -452,18 +501,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load16_u align=1
@@ -484,18 +540,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -525,18 +588,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -566,18 +636,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load align=1
@@ -598,18 +675,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -639,18 +723,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -680,18 +771,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -721,18 +819,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.shr_s
@@ -759,18 +864,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load8_s
@@ -791,18 +903,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.atomic.load8_u
@@ -823,18 +942,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load8_u
@@ -855,18 +981,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load16_s align=1
@@ -887,18 +1020,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -934,18 +1074,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -975,18 +1122,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load16_u align=1
@@ -1007,18 +1161,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1048,18 +1209,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1089,18 +1257,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load32_s align=1
@@ -1121,18 +1296,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1162,18 +1344,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1209,18 +1398,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1250,18 +1446,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load32_u align=1
@@ -1282,18 +1485,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1323,18 +1533,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1364,18 +1581,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1405,18 +1629,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load align=1
@@ -1437,18 +1668,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1478,18 +1716,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1519,18 +1764,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1560,18 +1812,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1601,18 +1860,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f32.load align=1
@@ -1633,18 +1899,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1674,18 +1947,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1715,18 +1995,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f64.load align=1
@@ -1747,18 +2034,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1788,18 +2082,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1829,18 +2130,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1870,18 +2178,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (v128.load align=1
@@ -1902,18 +2217,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1943,18 +2265,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1984,18 +2313,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2025,18 +2361,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2066,18 +2409,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.atomic.store8
@@ -2099,18 +2449,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store8
@@ -2132,18 +2489,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store16 align=1
@@ -2165,18 +2529,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2207,18 +2578,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2249,18 +2627,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store align=1
@@ -2282,18 +2667,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2324,18 +2716,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2366,18 +2765,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2408,18 +2814,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.atomic.store8
@@ -2441,18 +2854,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store8
@@ -2474,18 +2894,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store16 align=1
@@ -2507,18 +2934,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2549,18 +2983,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2591,18 +3032,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store32 align=1
@@ -2624,18 +3072,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2666,18 +3121,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2708,18 +3170,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2750,18 +3219,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store align=1
@@ -2783,18 +3259,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2825,18 +3308,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2867,18 +3357,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2909,18 +3406,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2951,18 +3455,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f32.store align=1
@@ -2984,18 +3495,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3026,18 +3544,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3068,18 +3593,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f64.store align=1
@@ -3101,18 +3633,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3143,18 +3682,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3185,18 +3731,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3227,18 +3780,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (v128.store align=1
@@ -3260,18 +3820,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3302,18 +3869,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3344,18 +3918,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3386,18 +3967,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3454,18 +4042,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load8_s
@@ -3486,18 +4081,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load8_u
@@ -3518,18 +4120,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load16_s align=1
@@ -3550,18 +4159,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3591,18 +4207,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load16_u align=1
@@ -3623,18 +4246,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3664,18 +4294,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load align=1
@@ -3696,18 +4333,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3737,18 +4381,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3778,18 +4429,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load8_s
@@ -3810,18 +4468,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load8_u
@@ -3842,18 +4507,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load16_s align=1
@@ -3874,18 +4546,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3915,18 +4594,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load16_u align=1
@@ -3947,18 +4633,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3988,18 +4681,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load32_s align=1
@@ -4020,18 +4720,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4061,18 +4768,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4102,18 +4816,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load32_u align=1
@@ -4134,18 +4855,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4175,18 +4903,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4216,18 +4951,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load align=1
@@ -4248,18 +4990,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4289,18 +5038,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4330,18 +5086,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4371,18 +5134,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f32.load align=1
@@ -4403,18 +5173,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4444,18 +5221,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4485,18 +5269,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f64.load align=1
@@ -4517,18 +5308,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4558,18 +5356,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4599,18 +5404,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4640,18 +5452,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (v128.load align=1
@@ -4672,18 +5491,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4713,18 +5539,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4754,18 +5587,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4795,18 +5635,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4836,18 +5683,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store8
@@ -4869,18 +5723,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store16 align=1
@@ -4902,18 +5763,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4944,18 +5812,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store align=1
@@ -4977,18 +5852,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5019,18 +5901,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5061,18 +5950,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store8
@@ -5094,18 +5990,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store16 align=1
@@ -5127,18 +6030,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5169,18 +6079,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store32 align=1
@@ -5202,18 +6119,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5244,18 +6168,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5286,18 +6217,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store align=1
@@ -5319,18 +6257,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5361,18 +6306,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5403,18 +6355,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5445,18 +6404,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f32.store align=1
@@ -5478,18 +6444,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5520,18 +6493,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5562,18 +6542,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f64.store align=1
@@ -5595,18 +6582,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5637,18 +6631,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5679,18 +6680,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5721,18 +6729,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (v128.store align=1
@@ -5754,18 +6769,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5796,18 +6818,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5838,18 +6867,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5880,18 +6916,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5953,18 +6996,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.shr_s
@@ -5991,18 +7041,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load8_s
@@ -6023,18 +7080,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.atomic.load8_u
@@ -6055,18 +7119,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load8_u
@@ -6087,18 +7158,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load16_s align=1
@@ -6119,18 +7197,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6166,18 +7251,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6207,18 +7299,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load16_u align=1
@@ -6239,18 +7338,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6280,18 +7386,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6321,18 +7434,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load align=1
@@ -6353,18 +7473,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6394,18 +7521,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6435,18 +7569,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6476,18 +7617,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.shr_s
@@ -6514,18 +7662,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load8_s
@@ -6546,18 +7701,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.atomic.load8_u
@@ -6578,18 +7740,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load8_u
@@ -6610,18 +7779,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load16_s align=1
@@ -6642,18 +7818,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6689,18 +7872,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6730,18 +7920,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load16_u align=1
@@ -6762,18 +7959,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6803,18 +8007,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6844,18 +8055,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load32_s align=1
@@ -6876,18 +8094,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6917,18 +8142,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6964,18 +8196,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7005,18 +8244,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load32_u align=1
@@ -7037,18 +8283,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7078,18 +8331,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7119,18 +8379,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7160,18 +8427,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load align=1
@@ -7192,18 +8466,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7233,18 +8514,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7274,18 +8562,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7315,18 +8610,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7356,18 +8658,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f32.load align=1
@@ -7388,18 +8697,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7429,18 +8745,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7470,18 +8793,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f64.load align=1
@@ -7502,18 +8832,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7543,18 +8880,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7584,18 +8928,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7625,18 +8976,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (v128.load align=1
@@ -7657,18 +9015,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7698,18 +9063,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7739,18 +9111,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7780,18 +9159,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7821,18 +9207,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.atomic.store8
@@ -7854,18 +9247,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store8
@@ -7887,18 +9287,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store16 align=1
@@ -7920,18 +9327,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7962,18 +9376,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8004,18 +9425,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store align=1
@@ -8037,18 +9465,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8079,18 +9514,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8121,18 +9563,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8163,18 +9612,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.atomic.store8
@@ -8196,18 +9652,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store8
@@ -8229,18 +9692,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store16 align=1
@@ -8262,18 +9732,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8304,18 +9781,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8346,18 +9830,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store32 align=1
@@ -8379,18 +9870,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8421,18 +9919,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8463,18 +9968,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8505,18 +10017,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store align=1
@@ -8538,18 +10057,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8580,18 +10106,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8622,18 +10155,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8664,18 +10204,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8706,18 +10253,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f32.store align=1
@@ -8739,18 +10293,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8781,18 +10342,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8823,18 +10391,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f64.store align=1
@@ -8856,18 +10431,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8898,18 +10480,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8940,18 +10529,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8982,18 +10578,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (v128.store align=1
@@ -9015,18 +10618,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -9057,18 +10667,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -9099,18 +10716,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -9141,18 +10765,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
diff --git a/test/passes/safe-heap_enable-threads_enable-simd64.txt b/test/passes/safe-heap_enable-threads_enable-simd64.txt
index c76b664d5..38482cd7d 100644
--- a/test/passes/safe-heap_enable-threads_enable-simd64.txt
+++ b/test/passes/safe-heap_enable-threads_enable-simd64.txt
@@ -198,18 +198,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.shr_s
@@ -236,18 +243,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load8_s
@@ -268,18 +282,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.atomic.load8_u
@@ -300,18 +321,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load8_u
@@ -332,18 +360,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load16_s align=1
@@ -364,18 +399,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -413,18 +455,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -456,18 +505,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load16_u align=1
@@ -488,18 +544,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -531,18 +594,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -574,18 +644,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load align=1
@@ -606,18 +683,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -649,18 +733,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -692,18 +783,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -735,18 +833,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.shr_s
@@ -773,18 +878,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load8_s
@@ -805,18 +917,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.atomic.load8_u
@@ -837,18 +956,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load8_u
@@ -869,18 +995,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load16_s align=1
@@ -901,18 +1034,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -950,18 +1090,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -993,18 +1140,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load16_u align=1
@@ -1025,18 +1179,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1068,18 +1229,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1111,18 +1279,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load32_s align=1
@@ -1143,18 +1318,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1186,18 +1368,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1235,18 +1424,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1278,18 +1474,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load32_u align=1
@@ -1310,18 +1513,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1353,18 +1563,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1396,18 +1613,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1439,18 +1663,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load align=1
@@ -1471,18 +1702,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1514,18 +1752,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1557,18 +1802,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1600,18 +1852,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1643,18 +1902,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f32.load align=1
@@ -1675,18 +1941,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1718,18 +1991,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1761,18 +2041,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f64.load align=1
@@ -1793,18 +2080,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1836,18 +2130,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1879,18 +2180,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1922,18 +2230,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (v128.load align=1
@@ -1954,18 +2269,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1997,18 +2319,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2040,18 +2369,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2083,18 +2419,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2126,18 +2469,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.atomic.store8
@@ -2159,18 +2509,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store8
@@ -2192,18 +2549,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store16 align=1
@@ -2225,18 +2589,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2269,18 +2640,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2313,18 +2691,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store align=1
@@ -2346,18 +2731,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2390,18 +2782,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2434,18 +2833,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2478,18 +2884,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.atomic.store8
@@ -2511,18 +2924,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store8
@@ -2544,18 +2964,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store16 align=1
@@ -2577,18 +3004,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2621,18 +3055,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2665,18 +3106,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store32 align=1
@@ -2698,18 +3146,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2742,18 +3197,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2786,18 +3248,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2830,18 +3299,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store align=1
@@ -2863,18 +3339,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2907,18 +3390,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2951,18 +3441,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2995,18 +3492,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3039,18 +3543,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f32.store align=1
@@ -3072,18 +3583,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3116,18 +3634,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3160,18 +3685,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f64.store align=1
@@ -3193,18 +3725,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3237,18 +3776,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3281,18 +3827,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3325,18 +3878,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (v128.store align=1
@@ -3358,18 +3918,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3402,18 +3969,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3446,18 +4020,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3490,18 +4071,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3560,18 +4148,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load8_s
@@ -3592,18 +4187,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load8_u
@@ -3624,18 +4226,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load16_s align=1
@@ -3656,18 +4265,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3699,18 +4315,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load16_u align=1
@@ -3731,18 +4354,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3774,18 +4404,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load align=1
@@ -3806,18 +4443,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3849,18 +4493,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3892,18 +4543,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load8_s
@@ -3924,18 +4582,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load8_u
@@ -3956,18 +4621,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load16_s align=1
@@ -3988,18 +4660,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4031,18 +4710,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load16_u align=1
@@ -4063,18 +4749,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4106,18 +4799,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load32_s align=1
@@ -4138,18 +4838,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4181,18 +4888,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4224,18 +4938,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load32_u align=1
@@ -4256,18 +4977,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4299,18 +5027,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4342,18 +5077,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load align=1
@@ -4374,18 +5116,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4417,18 +5166,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4460,18 +5216,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4503,18 +5266,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f32.load align=1
@@ -4535,18 +5305,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4578,18 +5355,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4621,18 +5405,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f64.load align=1
@@ -4653,18 +5444,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4696,18 +5494,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4739,18 +5544,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4782,18 +5594,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (v128.load align=1
@@ -4814,18 +5633,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4857,18 +5683,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4900,18 +5733,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4943,18 +5783,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4986,18 +5833,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store8
@@ -5019,18 +5873,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store16 align=1
@@ -5052,18 +5913,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5096,18 +5964,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store align=1
@@ -5129,18 +6004,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5173,18 +6055,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5217,18 +6106,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store8
@@ -5250,18 +6146,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store16 align=1
@@ -5283,18 +6186,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5327,18 +6237,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store32 align=1
@@ -5360,18 +6277,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5404,18 +6328,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5448,18 +6379,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store align=1
@@ -5481,18 +6419,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5525,18 +6470,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5569,18 +6521,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5613,18 +6572,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f32.store align=1
@@ -5646,18 +6612,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5690,18 +6663,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5734,18 +6714,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f64.store align=1
@@ -5767,18 +6754,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5811,18 +6805,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5855,18 +6856,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5899,18 +6907,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (v128.store align=1
@@ -5932,18 +6947,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5976,18 +6998,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6020,18 +7049,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6064,18 +7100,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i64.load
-      (call $emscripten_get_sbrk_ptr)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6139,18 +7182,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.shr_s
@@ -6177,18 +7227,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load8_s
@@ -6209,18 +7266,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.atomic.load8_u
@@ -6241,18 +7305,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load8_u
@@ -6273,18 +7344,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load16_s align=1
@@ -6305,18 +7383,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6354,18 +7439,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6397,18 +7489,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load16_u align=1
@@ -6429,18 +7528,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6472,18 +7578,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6515,18 +7628,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load align=1
@@ -6547,18 +7667,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6590,18 +7717,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6633,18 +7767,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6676,18 +7817,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.shr_s
@@ -6714,18 +7862,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load8_s
@@ -6746,18 +7901,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.atomic.load8_u
@@ -6778,18 +7940,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load8_u
@@ -6810,18 +7979,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load16_s align=1
@@ -6842,18 +8018,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6891,18 +8074,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6934,18 +8124,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load16_u align=1
@@ -6966,18 +8163,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7009,18 +8213,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7052,18 +8263,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load32_s align=1
@@ -7084,18 +8302,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7127,18 +8352,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7176,18 +8408,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7219,18 +8458,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load32_u align=1
@@ -7251,18 +8497,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7294,18 +8547,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7337,18 +8597,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7380,18 +8647,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load align=1
@@ -7412,18 +8686,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7455,18 +8736,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7498,18 +8786,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7541,18 +8836,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7584,18 +8886,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f32.load align=1
@@ -7616,18 +8925,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7659,18 +8975,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7702,18 +9025,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f64.load align=1
@@ -7734,18 +9064,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7777,18 +9114,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7820,18 +9164,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7863,18 +9214,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (v128.load align=1
@@ -7895,18 +9253,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7938,18 +9303,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7981,18 +9353,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8024,18 +9403,25 @@
      (local.get $2)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $2)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $2)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8067,18 +9453,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.atomic.store8
@@ -8100,18 +9493,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store8
@@ -8133,18 +9533,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store16 align=1
@@ -8166,18 +9573,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8210,18 +9624,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8254,18 +9675,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store align=1
@@ -8287,18 +9715,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8331,18 +9766,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8375,18 +9817,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8419,18 +9868,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.atomic.store8
@@ -8452,18 +9908,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 1)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 1)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store8
@@ -8485,18 +9948,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store16 align=1
@@ -8518,18 +9988,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8562,18 +10039,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 2)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 2)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8606,18 +10090,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store32 align=1
@@ -8639,18 +10130,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8683,18 +10181,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8727,18 +10232,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8771,18 +10283,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store align=1
@@ -8804,18 +10323,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8848,18 +10374,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8892,18 +10425,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8936,18 +10476,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8980,18 +10527,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f32.store align=1
@@ -9013,18 +10567,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -9057,18 +10618,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 4)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 4)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -9101,18 +10669,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f64.store align=1
@@ -9134,18 +10709,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -9178,18 +10760,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -9222,18 +10811,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 8)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 8)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -9266,18 +10862,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (v128.store align=1
@@ -9299,18 +10902,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -9343,18 +10953,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -9387,18 +11004,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -9431,18 +11055,25 @@
      (local.get $3)
      (i64.const 0)
     )
-    (i64.gt_u
-     (i64.add
-      (local.get $3)
-      (i64.const 16)
+    (i32.or
+     (i64.gt_u
+      (i64.add
+       (local.get $3)
+       (i64.const 16)
+      )
+      (i64.load
+       (call $foo)
+      )
      )
-     (i64.load
-      (call $foo)
+     (i64.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
diff --git a/test/passes/safe-heap_low-memory-unused_enable-threads_enable-simd.txt b/test/passes/safe-heap_low-memory-unused_enable-threads_enable-simd.txt
index 02904abad..72b68f218 100644
--- a/test/passes/safe-heap_low-memory-unused_enable-threads_enable-simd.txt
+++ b/test/passes/safe-heap_low-memory-unused_enable-threads_enable-simd.txt
@@ -198,18 +198,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.shr_s
@@ -236,18 +243,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load8_s
@@ -268,18 +282,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.atomic.load8_u
@@ -300,18 +321,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load8_u
@@ -332,18 +360,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load16_s align=1
@@ -364,18 +399,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -411,18 +453,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -452,18 +501,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load16_u align=1
@@ -484,18 +540,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -525,18 +588,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -566,18 +636,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load align=1
@@ -598,18 +675,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -639,18 +723,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -680,18 +771,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -721,18 +819,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.shr_s
@@ -759,18 +864,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load8_s
@@ -791,18 +903,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.atomic.load8_u
@@ -823,18 +942,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load8_u
@@ -855,18 +981,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load16_s align=1
@@ -887,18 +1020,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -934,18 +1074,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -975,18 +1122,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load16_u align=1
@@ -1007,18 +1161,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1048,18 +1209,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1089,18 +1257,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load32_s align=1
@@ -1121,18 +1296,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1162,18 +1344,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1209,18 +1398,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1250,18 +1446,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load32_u align=1
@@ -1282,18 +1485,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1323,18 +1533,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1364,18 +1581,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1405,18 +1629,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load align=1
@@ -1437,18 +1668,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1478,18 +1716,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1519,18 +1764,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1560,18 +1812,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1601,18 +1860,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f32.load align=1
@@ -1633,18 +1899,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1674,18 +1947,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1715,18 +1995,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f64.load align=1
@@ -1747,18 +2034,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1788,18 +2082,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1829,18 +2130,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1870,18 +2178,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (v128.load align=1
@@ -1902,18 +2217,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1943,18 +2265,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1984,18 +2313,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2025,18 +2361,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2066,18 +2409,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.atomic.store8
@@ -2099,18 +2449,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store8
@@ -2132,18 +2489,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store16 align=1
@@ -2165,18 +2529,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2207,18 +2578,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2249,18 +2627,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store align=1
@@ -2282,18 +2667,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2324,18 +2716,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2366,18 +2765,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2408,18 +2814,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.atomic.store8
@@ -2441,18 +2854,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store8
@@ -2474,18 +2894,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store16 align=1
@@ -2507,18 +2934,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2549,18 +2983,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2591,18 +3032,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store32 align=1
@@ -2624,18 +3072,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2666,18 +3121,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2708,18 +3170,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2750,18 +3219,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store align=1
@@ -2783,18 +3259,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2825,18 +3308,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2867,18 +3357,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2909,18 +3406,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2951,18 +3455,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f32.store align=1
@@ -2984,18 +3495,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3026,18 +3544,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3068,18 +3593,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f64.store align=1
@@ -3101,18 +3633,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3143,18 +3682,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3185,18 +3731,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3227,18 +3780,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (v128.store align=1
@@ -3260,18 +3820,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3302,18 +3869,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3344,18 +3918,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3386,18 +3967,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3454,18 +4042,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load8_s
@@ -3486,18 +4081,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load8_u
@@ -3518,18 +4120,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load16_s align=1
@@ -3550,18 +4159,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3591,18 +4207,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load16_u align=1
@@ -3623,18 +4246,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3664,18 +4294,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load align=1
@@ -3696,18 +4333,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3737,18 +4381,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3778,18 +4429,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load8_s
@@ -3810,18 +4468,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load8_u
@@ -3842,18 +4507,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load16_s align=1
@@ -3874,18 +4546,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3915,18 +4594,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load16_u align=1
@@ -3947,18 +4633,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -3988,18 +4681,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load32_s align=1
@@ -4020,18 +4720,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4061,18 +4768,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4102,18 +4816,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load32_u align=1
@@ -4134,18 +4855,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4175,18 +4903,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4216,18 +4951,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load align=1
@@ -4248,18 +4990,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4289,18 +5038,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4330,18 +5086,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4371,18 +5134,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f32.load align=1
@@ -4403,18 +5173,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4444,18 +5221,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4485,18 +5269,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f64.load align=1
@@ -4517,18 +5308,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4558,18 +5356,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4599,18 +5404,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4640,18 +5452,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (v128.load align=1
@@ -4672,18 +5491,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4713,18 +5539,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4754,18 +5587,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4795,18 +5635,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4836,18 +5683,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store8
@@ -4869,18 +5723,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store16 align=1
@@ -4902,18 +5763,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -4944,18 +5812,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store align=1
@@ -4977,18 +5852,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5019,18 +5901,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5061,18 +5950,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store8
@@ -5094,18 +5990,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store16 align=1
@@ -5127,18 +6030,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5169,18 +6079,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store32 align=1
@@ -5202,18 +6119,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5244,18 +6168,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5286,18 +6217,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store align=1
@@ -5319,18 +6257,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5361,18 +6306,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5403,18 +6355,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5445,18 +6404,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f32.store align=1
@@ -5478,18 +6444,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5520,18 +6493,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5562,18 +6542,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f64.store align=1
@@ -5595,18 +6582,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5637,18 +6631,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5679,18 +6680,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5721,18 +6729,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (v128.store align=1
@@ -5754,18 +6769,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5796,18 +6818,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5838,18 +6867,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5880,18 +6916,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
      )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -5953,18 +6996,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.shr_s
@@ -5991,18 +7041,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load8_s
@@ -6023,18 +7080,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.atomic.load8_u
@@ -6055,18 +7119,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load8_u
@@ -6087,18 +7158,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load16_s align=1
@@ -6119,18 +7197,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6166,18 +7251,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6207,18 +7299,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load16_u align=1
@@ -6239,18 +7338,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6280,18 +7386,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6321,18 +7434,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load align=1
@@ -6353,18 +7473,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6394,18 +7521,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6435,18 +7569,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6476,18 +7617,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.shr_s
@@ -6514,18 +7662,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load8_s
@@ -6546,18 +7701,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.atomic.load8_u
@@ -6578,18 +7740,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load8_u
@@ -6610,18 +7779,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load16_s align=1
@@ -6642,18 +7818,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6689,18 +7872,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6730,18 +7920,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load16_u align=1
@@ -6762,18 +7959,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6803,18 +8007,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6844,18 +8055,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load32_s align=1
@@ -6876,18 +8094,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6917,18 +8142,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -6964,18 +8196,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7005,18 +8244,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load32_u align=1
@@ -7037,18 +8283,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7078,18 +8331,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7119,18 +8379,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7160,18 +8427,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load align=1
@@ -7192,18 +8466,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7233,18 +8514,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7274,18 +8562,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7315,18 +8610,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7356,18 +8658,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f32.load align=1
@@ -7388,18 +8697,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7429,18 +8745,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7470,18 +8793,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f64.load align=1
@@ -7502,18 +8832,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7543,18 +8880,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7584,18 +8928,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7625,18 +8976,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (v128.load align=1
@@ -7657,18 +9015,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7698,18 +9063,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7739,18 +9111,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7780,18 +9159,25 @@
      (local.get $2)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $2)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $2)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7821,18 +9207,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.atomic.store8
@@ -7854,18 +9247,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store8
@@ -7887,18 +9287,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store16 align=1
@@ -7920,18 +9327,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -7962,18 +9376,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8004,18 +9425,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store align=1
@@ -8037,18 +9465,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8079,18 +9514,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8121,18 +9563,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8163,18 +9612,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.atomic.store8
@@ -8196,18 +9652,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 1)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store8
@@ -8229,18 +9692,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store16 align=1
@@ -8262,18 +9732,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8304,18 +9781,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 2)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8346,18 +9830,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store32 align=1
@@ -8379,18 +9870,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8421,18 +9919,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8463,18 +9968,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8505,18 +10017,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store align=1
@@ -8538,18 +10057,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8580,18 +10106,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8622,18 +10155,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8664,18 +10204,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8706,18 +10253,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f32.store align=1
@@ -8739,18 +10293,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8781,18 +10342,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 4)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8823,18 +10391,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f64.store align=1
@@ -8856,18 +10431,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8898,18 +10480,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8940,18 +10529,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 8)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -8982,18 +10578,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (v128.store align=1
@@ -9015,18 +10618,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -9057,18 +10667,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -9099,18 +10716,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -9141,18 +10765,25 @@
      (local.get $3)
      (i32.const 1024)
     )
-    (i32.gt_u
-     (i32.add
-      (local.get $3)
-      (i32.const 16)
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 16)
+      )
+      (i32.load
+       (call $foo)
+      )
      )
-     (i32.load
-      (call $foo)
+     (i32.lt_u
+      (local.get $3)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
diff --git a/test/passes/safe-heap_start-function.txt b/test/passes/safe-heap_start-function.txt
index 11b258945..a2445b18d 100644
--- a/test/passes/safe-heap_start-function.txt
+++ b/test/passes/safe-heap_start-function.txt
@@ -64,18 +64,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 1)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load8_s
@@ -96,18 +103,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 1)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load8_u
@@ -128,18 +142,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 2)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load16_s align=1
@@ -160,18 +181,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 2)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -201,18 +229,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 2)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load16_u align=1
@@ -233,18 +268,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 2)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -274,18 +316,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 4)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.load align=1
@@ -306,18 +355,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 4)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -347,18 +403,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 4)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -388,18 +451,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 1)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load8_s
@@ -420,18 +490,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 1)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load8_u
@@ -452,18 +529,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 2)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load16_s align=1
@@ -484,18 +568,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 2)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -525,18 +616,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 2)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load16_u align=1
@@ -557,18 +655,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 2)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -598,18 +703,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 4)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load32_s align=1
@@ -630,18 +742,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 4)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -671,18 +790,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 4)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -712,18 +838,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 4)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load32_u align=1
@@ -744,18 +877,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 4)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -785,18 +925,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 4)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -826,18 +973,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 8)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.load align=1
@@ -858,18 +1012,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 8)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -899,18 +1060,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 8)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -940,18 +1108,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 8)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -981,18 +1156,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 4)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f32.load align=1
@@ -1013,18 +1195,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 4)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1054,18 +1243,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 4)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1095,18 +1291,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 8)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f64.load align=1
@@ -1127,18 +1330,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 8)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1168,18 +1378,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 8)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1209,18 +1426,25 @@
      (local.get $2)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $2)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $2)
-      (i32.const 8)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1250,18 +1474,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $3)
-      (i32.const 1)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store8
@@ -1283,18 +1514,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $3)
-      (i32.const 2)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store16 align=1
@@ -1316,18 +1554,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $3)
-      (i32.const 2)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1358,18 +1603,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $3)
-      (i32.const 4)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i32.store align=1
@@ -1391,18 +1643,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $3)
-      (i32.const 4)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1433,18 +1692,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $3)
-      (i32.const 4)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1475,18 +1741,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 1)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $3)
-      (i32.const 1)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store8
@@ -1508,18 +1781,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $3)
-      (i32.const 2)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store16 align=1
@@ -1541,18 +1821,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 2)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $3)
-      (i32.const 2)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1583,18 +1870,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $3)
-      (i32.const 4)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store32 align=1
@@ -1616,18 +1910,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $3)
-      (i32.const 4)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1658,18 +1959,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $3)
-      (i32.const 4)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1700,18 +2008,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $3)
-      (i32.const 8)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (i64.store align=1
@@ -1733,18 +2048,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $3)
-      (i32.const 8)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1775,18 +2097,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $3)
-      (i32.const 8)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1817,18 +2146,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $3)
-      (i32.const 8)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1859,18 +2195,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $3)
-      (i32.const 4)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f32.store align=1
@@ -1892,18 +2235,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $3)
-      (i32.const 4)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1934,18 +2284,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 4)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $3)
-      (i32.const 4)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -1976,18 +2333,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $3)
-      (i32.const 8)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (f64.store align=1
@@ -2009,18 +2373,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $3)
-      (i32.const 8)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2051,18 +2422,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $3)
-      (i32.const 8)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
@@ -2093,18 +2471,25 @@
      (local.get $3)
      (i32.const 0)
     )
-    (i32.gt_u
-     (i32.add
+    (i32.or
+     (i32.gt_u
+      (i32.add
+       (local.get $3)
+       (i32.const 8)
+      )
+      (i32.load
+       (call $emscripten_get_sbrk_ptr)
+      )
+     )
+     (i32.lt_u
       (local.get $3)
-      (i32.const 8)
-     )
-     (i32.load
-      (call $emscripten_get_sbrk_ptr)
+      (local.get $0)
      )
     )
    )
    (then
     (call $segfault)
+    (unreachable)
    )
   )
   (if
author	Alon Zakai <azakai@google.com>	2024-07-12 13:37:40 -0700
committer	GitHub <noreply@github.com>	2024-07-12 13:37:40 -0700
commit	0e0e08db6280dec4f4fcce2dff3ba07445c45b8a (patch)
tree	c97e58534072cac88bcc685dda3dff49b1cbd20f
parent	c0286b61a0eedde936ce1adff4284859ce4c6510 (diff)
download	binaryen-0e0e08db6280dec4f4fcce2dff3ba07445c45b8a.tar.gz binaryen-0e0e08db6280dec4f4fcce2dff3ba07445c45b8a.tar.bz2 binaryen-0e0e08db6280dec4f4fcce2dff3ba07445c45b8a.zip