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

test/cctest/wasm/test-run-wasm-module.cc

 // 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.
 
 #include <stdlib.h>
 #include <string.h>
 
 #include "src/wasm/encoder.h"
 #include "src/wasm/wasm-js.h"
 #include "src/wasm/wasm-macro-gen.h"
@@ skipping 130 matching lines @@
   uint16_t localIndex = f->AddLocal(kAstI32);
   f->Exported(1);
   byte code[] = {WASM_BLOCK(
       2,
       WASM_WHILE(
           WASM_I32_LTS(WASM_GET_LOCAL(localIndex), WASM_I32V_3(kCheckSize)),
           WASM_IF_ELSE(
               WASM_LOAD_MEM(MachineType::Int32(), WASM_GET_LOCAL(localIndex)),
               WASM_BRV(2, WASM_I8(-1)), WASM_INC_LOCAL_BY(localIndex, 4))),
       WASM_I8(11))};
-  uint32_t local_indices[] = {7, 18, 24, 27};
-  f->EmitCode(code, sizeof(code), local_indices, sizeof(local_indices) / 4);
+  f->EmitCode(code, sizeof(code), nullptr, 0);
   WasmModuleWriter* writer = builder->Build(&zone);
   TestModule(writer->WriteTo(&zone), 11);
 }
 #endif
 
 
 #if !defined(V8_WITH_ASAN)
 // TODO(bradnelson): Figure out why this crashes under asan.
 TEST(Run_WasmModule_CallMain_recursive) {
   Zone zone;
   WasmModuleBuilder* builder = new (&zone) WasmModuleBuilder(&zone);
   uint16_t f_index = builder->AddFunction();
   WasmFunctionBuilder* f = builder->FunctionAt(f_index);
   f->ReturnType(kAstI32);
   uint16_t localIndex = f->AddLocal(kAstI32);
   f->Exported(1);
   byte code[] = {WASM_BLOCK(
       2, WASM_SET_LOCAL(localIndex,
                         WASM_LOAD_MEM(MachineType::Int32(), WASM_ZERO)),
       WASM_IF_ELSE(WASM_I32_LTS(WASM_GET_LOCAL(localIndex), WASM_I8(5)),
                    WASM_BLOCK(2, WASM_STORE_MEM(MachineType::Int32(), WASM_ZERO,
                                                 WASM_INC_LOCAL(localIndex)),
                               WASM_BRV(1, WASM_CALL_FUNCTION0(0))),
                    WASM_BRV(0, WASM_I8(55))))};
-  uint32_t local_indices[] = {3, 11, 21, 24};
-  f->EmitCode(code, sizeof(code), local_indices, sizeof(local_indices) / 4);
+  f->EmitCode(code, sizeof(code), nullptr, 0);
   WasmModuleWriter* writer = builder->Build(&zone);
   TestModule(writer->WriteTo(&zone), 55);
 }
 #endif
 
 
 #if !defined(V8_WITH_ASAN)
 // TODO(bradnelson): Figure out why this crashes under asan.
 TEST(Run_WasmModule_Global) {
   Zone zone;
@@ skipping 13 matching lines @@
   byte code2[] = {WASM_STORE_GLOBAL(global1, WASM_I32V_1(56)),
                   WASM_STORE_GLOBAL(global2, WASM_I32V_1(41)),
                   WASM_RETURN(WASM_CALL_FUNCTION0(f1_index))};
   f->EmitCode(code2, sizeof(code2));
   WasmModuleWriter* writer = builder->Build(&zone);
   TestModule(writer->WriteTo(&zone), 97);
 }
 #endif
 
 #endif  // !V8_TARGET_ARCH_ARM64