Revert of Assembler changes for enabling GrowHeap in Wasm

test/cctest/test-run-wasm-relocation-x64.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 "src/v8.h"
-
-#include "src/debug/debug.h"
-#include "src/disasm.h"
-#include "src/disassembler.h"
-#include "src/ic/ic.h"
-#include "src/macro-assembler.h"
-#include "test/cctest/cctest.h"
-#include "test/cctest/compiler/c-signature.h"
-#include "test/cctest/compiler/call-tester.h"
-
-using namespace v8::internal;
-using namespace v8::internal::compiler;
-
-#define __ assm.
-
-static int32_t DummyStaticFunction(Object* result) { return 1; }
-TEST(WasmRelocationX64movq64) {
-  CcTest::InitializeVM();
-  Isolate* isolate = CcTest::i_isolate();
-  HandleScope scope(isolate);
-  v8::internal::byte buffer[4096];
-  Assembler assm(isolate, buffer, sizeof buffer);
-  DummyStaticFunction(NULL);
-  int64_t imm = 1234567;
-
-  __ movq(rax, imm, RelocInfo::WASM_MEMORY_REFERENCE);
-  __ nop();
-  __ ret(0);
-
-  CodeDesc desc;
-  assm.GetCode(&desc);
-  Handle<Code> code = isolate->factory()->NewCode(
-      desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
-  USE(code);
-
-  CSignature0<int64_t> csig;
-  CodeRunner<int64_t> runnable(isolate, code, &csig);
-  int64_t ret_value = runnable.Call();
-  CHECK_EQ(ret_value, imm);
-
-#ifdef OBJECT_PRINT
-  OFStream os(stdout);
-  code->Print(os);
-  byte* begin = code->instruction_start();
-  byte* end = begin + code->instruction_size();
-  disasm::Disassembler::Disassemble(stdout, begin, end);
-#endif
-  size_t offset = 1234;
-
-  // Relocating references by offset
-  int mode_mask = (1 << RelocInfo::WASM_MEMORY_REFERENCE);
-  for (RelocIterator it(*code, mode_mask); !it.done(); it.next()) {
-    RelocInfo::Mode mode = it.rinfo()->rmode();
-    if (RelocInfo::IsWasmMemoryReference(mode)) {
-      // Dummy values of size used here as the objective of the test is to
-      // verify that the immediate is patched correctly
-      it.rinfo()->update_wasm_memory_reference(
-          it.rinfo()->wasm_memory_reference(),
-          it.rinfo()->wasm_memory_reference() + offset, 1, 2,
-          SKIP_ICACHE_FLUSH);
-    }
-  }
-
-  // Check if immediate is updated correctly
-  ret_value = runnable.Call();
-  printf("\nret_value: %lx", ret_value);
-  CHECK_EQ(ret_value, imm + offset);
-
-#ifdef OBJECT_PRINT
-  code->Print(os);
-  begin = code->instruction_start();
-  end = begin + code->instruction_size();
-  disasm::Disassembler::Disassemble(stdout, begin, end);
-#endif
-}
-
-#undef __