chromium/v8/src/codegen/cpu-features.h

// Copyright 2018 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_CODEGEN_CPU_FEATURES_H_
#define V8_CODEGEN_CPU_FEATURES_H_

#include "src/common/globals.h"

namespace v8 {

namespace internal {

// CPU feature flags.
enum CpuFeature { … };

// CpuFeatures keeps track of which features are supported by the target CPU.
// Supported features must be enabled by a CpuFeatureScope before use.
// Example:
//   if (assembler->IsSupported(SSE3)) {
//     CpuFeatureScope fscope(assembler, SSE3);
//     // Generate code containing SSE3 instructions.
//   } else {
//     // Generate alternative code.
//   }
class V8_EXPORT_PRIVATE CpuFeatures : public AllStatic { … };

}  // namespace internal
}  // namespace v8
#endif  // V8_CODEGEN_CPU_FEATURES_H_