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// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
#include "vm/globals.h"
#if defined(TARGET_ARCH_X64)
#include "vm/cpu.h"
#include "vm/cpu_x64.h"
#include "vm/constants.h"
#include "vm/cpuinfo.h"
#include "vm/heap/heap.h"
#include "vm/isolate.h"
#include "vm/object.h"
namespace dart {
DEFINE_FLAG(bool, use_sse41, true, "Use SSE 4.1 if available");
void CPU::FlushICache(uword start, uword size) {
// Nothing to be done here.
const char* CPU::Id() {
return "x64";
const char* HostCPUFeatures::hardware_ = nullptr;
bool HostCPUFeatures::sse2_supported_ = true;
bool HostCPUFeatures::sse4_1_supported_ = false;
bool HostCPUFeatures::popcnt_supported_ = false;
bool HostCPUFeatures::abm_supported_ = false;
#if defined(DEBUG)
bool HostCPUFeatures::initialized_ = false;
void HostCPUFeatures::Init() {
hardware_ = CpuInfo::GetCpuModel();
sse4_1_supported_ = CpuInfo::FieldContains(kCpuInfoFeatures, "sse4_1") ||
CpuInfo::FieldContains(kCpuInfoFeatures, "sse4.1");
popcnt_supported_ = CpuInfo::FieldContains(kCpuInfoFeatures, "popcnt");
abm_supported_ = CpuInfo::FieldContains(kCpuInfoFeatures, "abm");
#if defined(DEBUG)
initialized_ = true;
void HostCPUFeatures::Cleanup() {
#if defined(DEBUG)
initialized_ = false;
ASSERT(hardware_ != NULL);
hardware_ = NULL;
} // namespace dart
#endif // defined TARGET_ARCH_X64