[wasm] Introduce custom asm.js bytecodes for loads and stores.

src/wasm/wasm-opcodes.h

Index: src/wasm/wasm-opcodes.h
diff --git a/src/wasm/wasm-opcodes.h b/src/wasm/wasm-opcodes.h
index c6457503e67100c6ab0444c51c1819d281f8f254..764c5030f5f735554273c8f52780c6dfb805990a 100644
--- a/src/wasm/wasm-opcodes.h
+++ b/src/wasm/wasm-opcodes.h
@@ -261,26 +261,23 @@ const WasmCodePosition kNoCodePosition = -1;
   V(I32AsmjsDivU, 0xd1, i_ii)          \
   V(I32AsmjsRemS, 0xd2, i_ii)          \
   V(I32AsmjsRemU, 0xd3, i_ii)          \
+  V(I32AsmjsLoadMem8S, 0xd4, i_i)      \
+  V(I32AsmjsLoadMem8U, 0xd5, i_i)      \
+  V(I32AsmjsLoadMem16S, 0xd6, i_i)     \
+  V(I32AsmjsLoadMem16U, 0xd7, i_i)     \
+  V(I32AsmjsLoadMem, 0xd8, i_i)        \
+  V(F32AsmjsLoadMem, 0xd9, f_i)        \
+  V(F64AsmjsLoadMem, 0xda, d_i)        \
+  V(I32AsmjsStoreMem8, 0xdb, i_ii)     \
+  V(I32AsmjsStoreMem16, 0xdc, i_ii)    \
+  V(I32AsmjsStoreMem, 0xdd, i_ii)      \
+  V(F32AsmjsStoreMem, 0xde, f_if)      \
+  V(F64AsmjsStoreMem, 0xdf, d_id)      \
   V(I32AsmjsSConvertF32, 0xe0, i_f)    \
   V(I32AsmjsUConvertF32, 0xe1, i_f)    \
   V(I32AsmjsSConvertF64, 0xe2, i_d)    \
   V(I32AsmjsUConvertF64, 0xe3, i_d)
 
-/* TODO(titzer): introduce compatibility opcodes for these asm.js ops \
-V(I32AsmjsLoad8S, 0xd4, i_i)         \                                  \
-V(I32AsmjsLoad8U, 0xd5, i_i)         \                                  \
-V(I32AsmjsLoad16S, 0xd6, i_i)        \                                  \
-V(I32AsmjsLoad16U, 0xd7, i_i)        \                                  \
-V(I32AsmjsLoad, 0xd8, i_i)           \                                  \
-V(F32AsmjsLoad, 0xd9, f_i)           \                                  \
-V(F64AsmjsLoad, 0xda, d_i)           \                                  \
-V(I32AsmjsStore8, 0xdb, i_i)         \                                  \
-V(I32AsmjsStore16, 0xdc, i_i)        \                                  \
-V(I32AsmjsStore, 0xdd, i_ii)         \                                  \
-V(F32AsmjsStore, 0xde, i_if)         \                                  \
-V(F64AsmjsStore, 0xdf, i_id)         \                                  \
-*/
-
 // All opcodes.
 #define FOREACH_OPCODE(V)     \
   FOREACH_CONTROL_OPCODE(V)   \