update memory access in binary format

1 files changed, 4 insertions, 10 deletions

diff --git a/src/wasm-binary.h b/src/wasm-binary.h
index 3985bae04..3ce76e247 100644
--- a/src/wasm-binary.h
+++ b/src/wasm-binary.h
@@ -840,9 +840,8 @@ public:
   }
 
   void emitMemoryAccess(size_t alignment, size_t bytes, uint32_t offset) {
-    o << int8_t( ((alignment == bytes || alignment == 0) ? BinaryConsts::NaturalAlignment : BinaryConsts::Alignment) |
-                 (offset ? BinaryConsts::Offset : 0) );
-    if (offset) o << LEB128(offset);
+    o << LEB128(Log2(alignment ? alignment : bytes));
+    o << LEB128(offset);
   }
 
   void visitLoad(Load *curr) {
@@ -1682,13 +1681,8 @@ public:
   }
 
   void readMemoryAccess(uint32_t& alignment, size_t bytes, uint32_t& offset) {
-    auto value = getInt8();
-    alignment = value & BinaryConsts::Alignment ? 1 : bytes;
-    if (value & BinaryConsts::Offset) {
-      offset = getLEB128();
-    } else {
-      offset = 0;
-    }
+    alignment = Pow2(getLEB128());
+    offset = getLEB128();
   }
 
   bool maybeVisitImpl(Load *curr, uint8_t code) {