[wasm] Encode immediates to Load and Store as varint.

src/wasm/wasm-macro-gen.h

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_WASM_MACRO_GEN_H_
 #define V8_WASM_MACRO_GEN_H_
 
 #include "src/wasm/wasm-opcodes.h"
 
 #define U32_LE(v)                                    \
   static_cast<byte>(v), static_cast<byte>((v) >> 8), \
       static_cast<byte>((v) >> 16), static_cast<byte>((v) >> 24)
 
 #define U16_LE(v) static_cast<byte>(v), static_cast<byte>((v) >> 8)
 
 #define WASM_MODULE_HEADER U32_LE(kWasmMagic), U32_LE(kWasmVersion)
 
 #define SIG_INDEX(v) U16_LE(v)
 #define FUNC_INDEX(v) U32V_1(v)
 #define NAME_OFFSET(v) U32_LE(v)
 
+#define ZERO_ALIGNMENT 0
+#define ZERO_OFFSET 0
+
 #define BR_TARGET(v) U32_LE(v)
 
 #define MASK_7 ((1 << 7) - 1)
 #define MASK_14 ((1 << 14) - 1)
 #define MASK_21 ((1 << 21) - 1)
 #define MASK_28 ((1 << 28) - 1)
 
 #define U32V_1(x) static_cast<byte>((x)&MASK_7)
 #define U32V_2(x) \
   static_cast<byte>(((x)&MASK_7) | 0x80), static_cast<byte>(((x) >> 7) & MASK_7)
@@ skipping 286 matching lines @@
       static_cast<byte>(bit_cast<uint64_t>(val) >> 48),      \
       static_cast<byte>(bit_cast<uint64_t>(val) >> 56)
 #define WASM_GET_LOCAL(index) kExprGetLocal, static_cast<byte>(index)
 #define WASM_SET_LOCAL(index, val) kExprSetLocal, static_cast<byte>(index), val
 #define WASM_LOAD_GLOBAL(index) kExprLoadGlobal, static_cast<byte>(index)
 #define WASM_STORE_GLOBAL(index, val) \
   kExprStoreGlobal, static_cast<byte>(index), val
 #define WASM_LOAD_MEM(type, index)                                      \
   static_cast<byte>(                                                    \
       v8::internal::wasm::WasmOpcodes::LoadStoreOpcodeOf(type, false)), \
-      v8::internal::wasm::WasmOpcodes::LoadStoreAccessOf(false), index
+      ZERO_ALIGNMENT, ZERO_OFFSET, index
 #define WASM_STORE_MEM(type, index, val)                               \
   static_cast<byte>(                                                   \
       v8::internal::wasm::WasmOpcodes::LoadStoreOpcodeOf(type, true)), \
-      v8::internal::wasm::WasmOpcodes::LoadStoreAccessOf(false), index, val
+      ZERO_ALIGNMENT, ZERO_OFFSET, index, val
 #define WASM_LOAD_MEM_OFFSET(type, offset, index)                       \
   static_cast<byte>(                                                    \
       v8::internal::wasm::WasmOpcodes::LoadStoreOpcodeOf(type, false)), \
-      v8::internal::wasm::WasmOpcodes::LoadStoreAccessOf(true),         \
-      static_cast<byte>(offset), index
+      ZERO_ALIGNMENT, U32V_1(offset), index
 #define WASM_STORE_MEM_OFFSET(type, offset, index, val)                \
   static_cast<byte>(                                                   \
       v8::internal::wasm::WasmOpcodes::LoadStoreOpcodeOf(type, true)), \
-      v8::internal::wasm::WasmOpcodes::LoadStoreAccessOf(true),        \
-      static_cast<byte>(offset), index, val
+      ZERO_ALIGNMENT, U32V_1(offset), index, val
 #define WASM_CALL_FUNCTION(index, ...) \
   kExprCallFunction, static_cast<byte>(index), __VA_ARGS__
 #define WASM_CALL_IMPORT(index, ...) \
   kExprCallImport, static_cast<byte>(index), __VA_ARGS__
 #define WASM_CALL_INDIRECT(index, func, ...) \
   kExprCallIndirect, static_cast<byte>(index), func, __VA_ARGS__
 #define WASM_CALL_FUNCTION0(index) kExprCallFunction, static_cast<byte>(index)
 #define WASM_CALL_IMPORT0(index) kExprCallImport, static_cast<byte>(index)
 #define WASM_CALL_INDIRECT0(index, func) \
   kExprCallIndirect, static_cast<byte>(index), func
@@ skipping 148 matching lines @@
 #define WASM_F64_SCONVERT_I32(x) kExprF64SConvertI32, x
 #define WASM_F64_UCONVERT_I32(x) kExprF64UConvertI32, x
 #define WASM_F64_SCONVERT_I64(x) kExprF64SConvertI64, x
 #define WASM_F64_UCONVERT_I64(x) kExprF64UConvertI64, x
 #define WASM_F64_CONVERT_F32(x) kExprF64ConvertF32, x
 #define WASM_F64_REINTERPRET_I64(x) kExprF64ReinterpretI64, x
 #define WASM_I32_REINTERPRET_F32(x) kExprI32ReinterpretF32, x
 #define WASM_I64_REINTERPRET_F64(x) kExprI64ReinterpretF64, x
 
 #endif  // V8_WASM_MACRO_GEN_H_