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-rw-r--r--src/passes/OptimizeInstructions.cpp127
-rw-r--r--test/lit/passes/optimize-instructions-bulk-memory.wast230
-rw-r--r--test/lit/passes/optimize-instructions-ignore-traps.wast196
3 files changed, 469 insertions, 84 deletions
diff --git a/src/passes/OptimizeInstructions.cpp b/src/passes/OptimizeInstructions.cpp
index 768ea5702..217312501 100644
--- a/src/passes/OptimizeInstructions.cpp
+++ b/src/passes/OptimizeInstructions.cpp
@@ -1158,6 +1158,16 @@ struct OptimizeInstructions
}
}
+ void visitMemoryFill(MemoryFill* curr) {
+ if (curr->type == Type::unreachable) {
+ return;
+ }
+ assert(getModule()->features.hasBulkMemory());
+ if (auto* ret = optimizeMemoryFill(curr)) {
+ return replaceCurrent(ret);
+ }
+ }
+
void visitCallRef(CallRef* curr) {
if (curr->target->type == Type::unreachable) {
// The call_ref is not reached; leave this for DCE.
@@ -2863,7 +2873,7 @@ private:
// memory.copy(dst, src, C) ==> store(dst, load(src))
if (auto* csize = memCopy->size->dynCast<Const>()) {
- auto bytes = csize->value.geti32();
+ auto bytes = csize->value.getInteger();
Builder builder(*getModule());
switch (bytes) {
@@ -2919,6 +2929,121 @@ private:
return nullptr;
}
+ Expression* optimizeMemoryFill(MemoryFill* memFill) {
+ if (!memFill->size->is<Const>()) {
+ return nullptr;
+ }
+
+ PassOptions options = getPassOptions();
+ Builder builder(*getModule());
+
+ auto* csize = memFill->size->cast<Const>();
+ auto bytes = csize->value.getInteger();
+
+ if (bytes == 0LL &&
+ (options.ignoreImplicitTraps || options.trapsNeverHappen)) {
+ // memory.fill(d, v, 0) ==> { drop(d), drop(v) }
+ return builder.makeBlock(
+ {builder.makeDrop(memFill->dest), builder.makeDrop(memFill->value)});
+ }
+
+ const uint32_t offset = 0, align = 1;
+
+ if (auto* cvalue = memFill->value->dynCast<Const>()) {
+ uint32_t value = cvalue->value.geti32() & 0xFF;
+ // memory.fill(d, C1, C2) ==>
+ // store(d, (C1 & 0xFF) * (-1U / max(bytes)))
+ switch (bytes) {
+ case 1: {
+ return builder.makeStore(1, // bytes
+ offset,
+ align,
+ memFill->dest,
+ builder.makeConst<uint32_t>(value),
+ Type::i32);
+ }
+ case 2: {
+ return builder.makeStore(2,
+ offset,
+ align,
+ memFill->dest,
+ builder.makeConst<uint32_t>(value * 0x0101U),
+ Type::i32);
+ }
+ case 4: {
+ // transform only when "value" or shrinkLevel equal to zero due to
+ // it could increase size by several bytes
+ if (value == 0 || options.shrinkLevel == 0) {
+ return builder.makeStore(
+ 4,
+ offset,
+ align,
+ memFill->dest,
+ builder.makeConst<uint32_t>(value * 0x01010101U),
+ Type::i32);
+ }
+ break;
+ }
+ case 8: {
+ // transform only when "value" or shrinkLevel equal to zero due to
+ // it could increase size by several bytes
+ if (value == 0 || options.shrinkLevel == 0) {
+ return builder.makeStore(
+ 8,
+ offset,
+ align,
+ memFill->dest,
+ builder.makeConst<uint64_t>(value * 0x0101010101010101ULL),
+ Type::i64);
+ }
+ break;
+ }
+ case 16: {
+ if (options.shrinkLevel == 0) {
+ if (getModule()->features.hasSIMD()) {
+ uint8_t values[16];
+ std::fill_n(values, 16, (uint8_t)value);
+ return builder.makeStore(16,
+ offset,
+ align,
+ memFill->dest,
+ builder.makeConst<uint8_t[16]>(values),
+ Type::v128);
+ } else {
+ // { i64.store(d, C', 0), i64.store(d, C', 8) }
+ return builder.makeBlock({
+ builder.makeStore(
+ 8,
+ offset,
+ align,
+ memFill->dest,
+ builder.makeConst<uint64_t>(value * 0x0101010101010101ULL),
+ Type::i64),
+ builder.makeStore(
+ 8,
+ offset + 8,
+ align,
+ memFill->dest,
+ builder.makeConst<uint64_t>(value * 0x0101010101010101ULL),
+ Type::i64),
+ });
+ }
+ }
+ break;
+ }
+ default: {
+ }
+ }
+ }
+ // memory.fill(d, v, 1) ==> store8(d, v)
+ if (bytes == 1LL) {
+ return builder.makeStore(
+ 1, offset, align, memFill->dest, memFill->value, Type::i32);
+ }
+
+ return nullptr;
+ }
+
// given a binary expression with equal children and no side effects in
// either, we can fold various things
Expression* optimizeBinaryWithEqualEffectlessChildren(Binary* binary) {
diff --git a/test/lit/passes/optimize-instructions-bulk-memory.wast b/test/lit/passes/optimize-instructions-bulk-memory.wast
index 37d17dba8..5c9efc893 100644
--- a/test/lit/passes/optimize-instructions-bulk-memory.wast
+++ b/test/lit/passes/optimize-instructions-bulk-memory.wast
@@ -1,5 +1,5 @@
;; NOTE: Assertions have been generated by update_lit_checks.py and should not be edited.
-;; RUN: wasm-opt %s --optimize-instructions --enable-bulk-memory -S -o - | filecheck %s
+;; RUN: wasm-opt %s --all-features --optimize-instructions --enable-bulk-memory -S -o - | filecheck %s
(module
(memory 0)
@@ -58,10 +58,11 @@
;; CHECK-NEXT: (local.get $src)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
- ;; CHECK-NEXT: (memory.copy
+ ;; CHECK-NEXT: (v128.store align=1
;; CHECK-NEXT: (local.get $dst)
- ;; CHECK-NEXT: (local.get $src)
- ;; CHECK-NEXT: (i32.const 16)
+ ;; CHECK-NEXT: (v128.load align=1
+ ;; CHECK-NEXT: (local.get $src)
+ ;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (memory.copy
;; CHECK-NEXT: (local.get $dst)
@@ -157,4 +158,225 @@
)
)
)
+
+ ;; CHECK: (func $optimize-bulk-memory-fill (param $dst i32) (param $val i32) (param $sz i32)
+ ;; CHECK-NEXT: (memory.fill
+ ;; CHECK-NEXT: (local.get $dst)
+ ;; CHECK-NEXT: (i32.const 0)
+ ;; CHECK-NEXT: (i32.const 0)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (i32.store8
+ ;; CHECK-NEXT: (local.get $dst)
+ ;; CHECK-NEXT: (i32.const 0)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (i32.store8
+ ;; CHECK-NEXT: (local.get $dst)
+ ;; CHECK-NEXT: (local.get $val)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (i32.store8
+ ;; CHECK-NEXT: (local.get $dst)
+ ;; CHECK-NEXT: (i32.const 1)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (i32.store8
+ ;; CHECK-NEXT: (local.get $dst)
+ ;; CHECK-NEXT: (i32.const 255)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (i32.store16 align=1
+ ;; CHECK-NEXT: (local.get $dst)
+ ;; CHECK-NEXT: (i32.const 0)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (i32.store16 align=1
+ ;; CHECK-NEXT: (local.get $dst)
+ ;; CHECK-NEXT: (i32.const 257)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (i32.store16 align=1
+ ;; CHECK-NEXT: (local.get $dst)
+ ;; CHECK-NEXT: (i32.const 65535)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (i32.store align=1
+ ;; CHECK-NEXT: (local.get $dst)
+ ;; CHECK-NEXT: (i32.const 0)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (i64.store align=1
+ ;; CHECK-NEXT: (local.get $dst)
+ ;; CHECK-NEXT: (i64.const 0)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (v128.store align=1
+ ;; CHECK-NEXT: (local.get $dst)
+ ;; CHECK-NEXT: (v128.const i32x4 0x00000000 0x00000000 0x00000000 0x00000000)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (i32.store align=1
+ ;; CHECK-NEXT: (local.get $dst)
+ ;; CHECK-NEXT: (i32.const 16843009)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (i64.store align=1
+ ;; CHECK-NEXT: (local.get $dst)
+ ;; CHECK-NEXT: (i64.const 72340172838076673)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (v128.store align=1
+ ;; CHECK-NEXT: (local.get $dst)
+ ;; CHECK-NEXT: (v128.const i32x4 0x01010101 0x01010101 0x01010101 0x01010101)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (v128.store align=1
+ ;; CHECK-NEXT: (local.get $dst)
+ ;; CHECK-NEXT: (v128.const i32x4 0xffffffff 0xffffffff 0xffffffff 0xffffffff)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (memory.fill
+ ;; CHECK-NEXT: (local.get $dst)
+ ;; CHECK-NEXT: (local.get $val)
+ ;; CHECK-NEXT: (i32.const 0)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (memory.fill
+ ;; CHECK-NEXT: (local.get $dst)
+ ;; CHECK-NEXT: (i32.const 0)
+ ;; CHECK-NEXT: (local.get $sz)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (memory.fill
+ ;; CHECK-NEXT: (local.get $dst)
+ ;; CHECK-NEXT: (local.get $val)
+ ;; CHECK-NEXT: (local.get $sz)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (memory.fill
+ ;; CHECK-NEXT: (local.get $dst)
+ ;; CHECK-NEXT: (i32.const 0)
+ ;; CHECK-NEXT: (i32.const 3)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (memory.fill
+ ;; CHECK-NEXT: (local.get $dst)
+ ;; CHECK-NEXT: (i32.const 1)
+ ;; CHECK-NEXT: (i32.const 3)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (memory.fill
+ ;; CHECK-NEXT: (local.get $dst)
+ ;; CHECK-NEXT: (i32.const 0)
+ ;; CHECK-NEXT: (i32.const 17)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ (func $optimize-bulk-memory-fill (param $dst i32) (param $val i32) (param $sz i32)
+ (memory.fill
+ (local.get $dst)
+ (i32.const 0)
+ (i32.const 0)
+ )
+
+ (memory.fill
+ (local.get $dst)
+ (i32.const 0)
+ (i32.const 1)
+ )
+
+ (memory.fill
+ (local.get $dst)
+ (local.get $val)
+ (i32.const 1)
+ )
+
+ (memory.fill
+ (local.get $dst)
+ (i32.const 1)
+ (i32.const 1)
+ )
+
+ (memory.fill
+ (local.get $dst)
+ (i32.const 1023)
+ (i32.const 1)
+ )
+
+ (memory.fill
+ (local.get $dst)
+ (i32.const 0)
+ (i32.const 2)
+ )
+
+ (memory.fill
+ (local.get $dst)
+ (i32.const 1)
+ (i32.const 2)
+ )
+
+ (memory.fill
+ (local.get $dst)
+ (i32.const 255)
+ (i32.const 2)
+ )
+
+ (memory.fill
+ (local.get $dst)
+ (i32.const 0)
+ (i32.const 4)
+ )
+
+ (memory.fill
+ (local.get $dst)
+ (i32.const 0)
+ (i32.const 8)
+ )
+
+ (memory.fill
+ (local.get $dst)
+ (i32.const 0)
+ (i32.const 16)
+ )
+
+ (memory.fill
+ (local.get $dst)
+ (i32.const 1)
+ (i32.const 4)
+ )
+
+ (memory.fill
+ (local.get $dst)
+ (i32.const 1)
+ (i32.const 8)
+ )
+
+ (memory.fill
+ (local.get $dst)
+ (i32.const 1)
+ (i32.const 16)
+ )
+
+ (memory.fill
+ (local.get $dst)
+ (i32.const 1023)
+ (i32.const 16)
+ )
+
+ (memory.fill ;; skip
+ (local.get $dst)
+ (local.get $val)
+ (i32.const 0)
+ )
+
+ (memory.fill ;; skip
+ (local.get $dst)
+ (i32.const 0)
+ (local.get $sz)
+ )
+
+ (memory.fill ;; skip
+ (local.get $dst)
+ (local.get $val)
+ (local.get $sz)
+ )
+
+ (memory.fill ;; skip
+ (local.get $dst)
+ (i32.const 0)
+ (i32.const 3)
+ )
+
+ (memory.fill ;; skip
+ (local.get $dst)
+ (i32.const 1)
+ (i32.const 3)
+ )
+
+ (memory.fill ;; skip
+ (local.get $dst)
+ (i32.const 0)
+ (i32.const 17)
+ )
+ )
)
diff --git a/test/lit/passes/optimize-instructions-ignore-traps.wast b/test/lit/passes/optimize-instructions-ignore-traps.wast
index 71baba86f..f76410a03 100644
--- a/test/lit/passes/optimize-instructions-ignore-traps.wast
+++ b/test/lit/passes/optimize-instructions-ignore-traps.wast
@@ -1,5 +1,5 @@
;; NOTE: Assertions have been generated by update_lit_checks.py and should not be edited.
-;; RUN: wasm-opt %s --all-features --optimize-level=2 --ignore-implicit-traps -S -o - \
+;; RUN: wasm-opt %s --all-features --optimize-instructions --optimize-level=2 --ignore-implicit-traps -S -o - \
;; RUN: | filecheck %s
(module
@@ -30,50 +30,47 @@
;; CHECK-NEXT: )
;; CHECK-NEXT: (local.set $0
;; CHECK-NEXT: (if (result i32)
- ;; CHECK-NEXT: (i32.or
- ;; CHECK-NEXT: (i32.eqz
- ;; CHECK-NEXT: (i32.rem_s
- ;; CHECK-NEXT: (i32.add
- ;; CHECK-NEXT: (i32.mul
- ;; CHECK-NEXT: (local.tee $7
- ;; CHECK-NEXT: (i32.add
- ;; CHECK-NEXT: (local.get $0)
- ;; CHECK-NEXT: (i32.const 2)
- ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (if (result i32)
+ ;; CHECK-NEXT: (i32.rem_s
+ ;; CHECK-NEXT: (i32.add
+ ;; CHECK-NEXT: (i32.mul
+ ;; CHECK-NEXT: (local.get $0)
+ ;; CHECK-NEXT: (local.tee $7
+ ;; CHECK-NEXT: (i32.add
+ ;; CHECK-NEXT: (local.get $0)
+ ;; CHECK-NEXT: (i32.const 2)
;; CHECK-NEXT: )
- ;; CHECK-NEXT: (local.get $0)
;; CHECK-NEXT: )
- ;; CHECK-NEXT: (i32.const 17)
;; CHECK-NEXT: )
- ;; CHECK-NEXT: (i32.const 5)
+ ;; CHECK-NEXT: (i32.const 17)
;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (i32.const 5)
;; CHECK-NEXT: )
- ;; CHECK-NEXT: (i32.eqz
- ;; CHECK-NEXT: (i32.rem_u
- ;; CHECK-NEXT: (i32.add
- ;; CHECK-NEXT: (i32.mul
- ;; CHECK-NEXT: (local.get $0)
- ;; CHECK-NEXT: (local.get $0)
- ;; CHECK-NEXT: )
- ;; CHECK-NEXT: (i32.const 11)
+ ;; CHECK-NEXT: (i32.rem_u
+ ;; CHECK-NEXT: (i32.add
+ ;; CHECK-NEXT: (i32.mul
+ ;; CHECK-NEXT: (local.get $0)
+ ;; CHECK-NEXT: (local.get $0)
;; CHECK-NEXT: )
- ;; CHECK-NEXT: (i32.const 3)
+ ;; CHECK-NEXT: (i32.const 11)
;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (i32.const 3)
;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: )
- ;; CHECK-NEXT: (local.get $7)
;; CHECK-NEXT: (local.get $6)
+ ;; CHECK-NEXT: (local.get $7)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (br_if $while-in6
- ;; CHECK-NEXT: (i32.lt_s
+ ;; CHECK-NEXT: (i32.gt_s
+ ;; CHECK-NEXT: (local.get $4)
;; CHECK-NEXT: (local.tee $3
;; CHECK-NEXT: (i32.add
;; CHECK-NEXT: (local.get $3)
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
- ;; CHECK-NEXT: (local.get $4)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
@@ -207,13 +204,10 @@
;; CHECK-NEXT: (i32.rem_s
;; CHECK-NEXT: (i32.add
;; CHECK-NEXT: (i32.mul
+ ;; CHECK-NEXT: (local.get $0)
;; CHECK-NEXT: (local.tee $7
- ;; CHECK-NEXT: (i32.add
- ;; CHECK-NEXT: (local.get $0)
- ;; CHECK-NEXT: (i32.const 0)
- ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (local.get $0)
;; CHECK-NEXT: )
- ;; CHECK-NEXT: (local.get $0)
;; CHECK-NEXT: )
;; CHECK-NEXT: (i32.const 17)
;; CHECK-NEXT: )
@@ -238,14 +232,14 @@
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (br_if $while-in6
- ;; CHECK-NEXT: (i32.lt_s
+ ;; CHECK-NEXT: (i32.gt_s
+ ;; CHECK-NEXT: (local.get $4)
;; CHECK-NEXT: (local.tee $3
;; CHECK-NEXT: (i32.add
;; CHECK-NEXT: (local.get $3)
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
- ;; CHECK-NEXT: (local.get $4)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
@@ -374,50 +368,44 @@
;; CHECK-NEXT: )
;; CHECK-NEXT: (local.set $0
;; CHECK-NEXT: (if (result i32)
- ;; CHECK-NEXT: (i32.or
- ;; CHECK-NEXT: (i32.eqz
- ;; CHECK-NEXT: (i32.rem_s
- ;; CHECK-NEXT: (i32.add
- ;; CHECK-NEXT: (i32.mul
- ;; CHECK-NEXT: (i32.eqz
- ;; CHECK-NEXT: (i32.add
- ;; CHECK-NEXT: (local.get $0)
- ;; CHECK-NEXT: (i32.const 0)
- ;; CHECK-NEXT: )
- ;; CHECK-NEXT: )
- ;; CHECK-NEXT: (local.get $0)
- ;; CHECK-NEXT: )
- ;; CHECK-NEXT: (i32.const 17)
+ ;; CHECK-NEXT: (if (result i32)
+ ;; CHECK-NEXT: (i32.rem_u
+ ;; CHECK-NEXT: (i32.add
+ ;; CHECK-NEXT: (i32.mul
+ ;; CHECK-NEXT: (local.get $0)
+ ;; CHECK-NEXT: (local.get $0)
;; CHECK-NEXT: )
- ;; CHECK-NEXT: (i32.const 5)
+ ;; CHECK-NEXT: (i32.const 100)
;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (i32.const 3)
;; CHECK-NEXT: )
- ;; CHECK-NEXT: (i32.eqz
- ;; CHECK-NEXT: (i32.rem_u
- ;; CHECK-NEXT: (i32.add
- ;; CHECK-NEXT: (i32.mul
- ;; CHECK-NEXT: (local.get $0)
+ ;; CHECK-NEXT: (i32.rem_s
+ ;; CHECK-NEXT: (i32.add
+ ;; CHECK-NEXT: (i32.mul
+ ;; CHECK-NEXT: (local.get $0)
+ ;; CHECK-NEXT: (i32.eqz
;; CHECK-NEXT: (local.get $0)
;; CHECK-NEXT: )
- ;; CHECK-NEXT: (i32.const 100)
;; CHECK-NEXT: )
- ;; CHECK-NEXT: (i32.const 3)
+ ;; CHECK-NEXT: (i32.const 17)
;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (i32.const 5)
;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: )
- ;; CHECK-NEXT: (local.get $7)
;; CHECK-NEXT: (local.get $6)
+ ;; CHECK-NEXT: (local.get $7)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (br_if $while-in6
- ;; CHECK-NEXT: (i32.lt_s
+ ;; CHECK-NEXT: (i32.gt_s
+ ;; CHECK-NEXT: (local.get $4)
;; CHECK-NEXT: (local.tee $3
;; CHECK-NEXT: (i32.add
;; CHECK-NEXT: (local.get $3)
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
- ;; CHECK-NEXT: (local.get $4)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
@@ -527,13 +515,13 @@
;; CHECK-NEXT: (if
;; CHECK-NEXT: (i32.eqz
;; CHECK-NEXT: (i32.and
- ;; CHECK-NEXT: (i32.lt_s
+ ;; CHECK-NEXT: (i32.lt_u
;; CHECK-NEXT: (i32.and
;; CHECK-NEXT: (i32.shr_s
;; CHECK-NEXT: (i32.shl
- ;; CHECK-NEXT: (i32.add
+ ;; CHECK-NEXT: (i32.sub
;; CHECK-NEXT: (local.get $1)
- ;; CHECK-NEXT: (i32.const -1)
+ ;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: (i32.const 24)
;; CHECK-NEXT: )
@@ -594,14 +582,17 @@
;; CHECK: (func $invalidate-conditionalizeExpensiveOnBitwise-ok (param $0 i32) (param $1 i32) (result i32)
;; CHECK-NEXT: (if
;; CHECK-NEXT: (i32.eqz
- ;; CHECK-NEXT: (i32.and
- ;; CHECK-NEXT: (i32.lt_s
+ ;; CHECK-NEXT: (if (result i32)
+ ;; CHECK-NEXT: (local.tee $1
+ ;; CHECK-NEXT: (i32.const 0)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (i32.lt_u
;; CHECK-NEXT: (i32.and
;; CHECK-NEXT: (i32.shr_s
;; CHECK-NEXT: (i32.shl
- ;; CHECK-NEXT: (i32.add
+ ;; CHECK-NEXT: (i32.sub
;; CHECK-NEXT: (local.get $0)
- ;; CHECK-NEXT: (i32.const -1)
+ ;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: (i32.const 24)
;; CHECK-NEXT: )
@@ -611,12 +602,7 @@
;; CHECK-NEXT: )
;; CHECK-NEXT: (i32.const 3)
;; CHECK-NEXT: )
- ;; CHECK-NEXT: (i32.ne
- ;; CHECK-NEXT: (local.tee $1
- ;; CHECK-NEXT: (i32.const 0)
- ;; CHECK-NEXT: )
- ;; CHECK-NEXT: (i32.const 0)
- ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (return
@@ -735,15 +721,24 @@
(f64.const -nan:0xfffffffffffff)
)
;; CHECK: (func $optimize-bulk-memory-copy (param $dst i32) (param $src i32) (param $sz i32)
- ;; CHECK-NEXT: (memory.copy
- ;; CHECK-NEXT: (local.get $dst)
- ;; CHECK-NEXT: (local.get $dst)
- ;; CHECK-NEXT: (local.get $sz)
+ ;; CHECK-NEXT: (block
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (local.get $dst)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (local.get $dst)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (local.get $sz)
+ ;; CHECK-NEXT: )
;; CHECK-NEXT: )
- ;; CHECK-NEXT: (memory.copy
- ;; CHECK-NEXT: (local.get $dst)
- ;; CHECK-NEXT: (local.get $src)
- ;; CHECK-NEXT: (i32.const 0)
+ ;; CHECK-NEXT: (block
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (local.get $dst)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (local.get $src)
+ ;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $optimize-bulk-memory-copy (param $dst i32) (param $src i32) (param $sz i32)
@@ -759,4 +754,47 @@
(i32.const 0)
)
)
+
+ ;; CHECK: (func $optimize-bulk-memory-fill (param $dst i32) (param $val i32) (param $sz i32)
+ ;; CHECK-NEXT: (block
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (local.get $dst)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (i32.const 0)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (block
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (local.get $dst)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (local.get $val)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (memory.fill
+ ;; CHECK-NEXT: (i32.const 0)
+ ;; CHECK-NEXT: (i32.const 0)
+ ;; CHECK-NEXT: (local.get $sz)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ (func $optimize-bulk-memory-fill (param $dst i32) (param $val i32) (param $sz i32)
+ (memory.fill ;; drops
+ (local.get $dst)
+ (i32.const 0)
+ (i32.const 0)
+ )
+
+ (memory.fill ;; drops
+ (local.get $dst)
+ (local.get $val)
+ (i32.const 0)
+ )
+
+ (memory.fill ;; skip
+ (i32.const 0)
+ (i32.const 0)
+ (local.get $sz)
+ )
+ )
)
generated by cgit v1.2.3 (git 2.39.1) at 2025-08-05 15:15:06 +0000