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// Copyright 2014 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_COMPILER_REGISTER_CONFIGURATION_H_
#define V8_COMPILER_REGISTER_CONFIGURATION_H_
#include "src/v8.h"
namespace v8 {
namespace internal {
namespace compiler {
// An architecture independent representation of the sets of registers available
// for instruction creation.
class RegisterConfiguration {
public:
// Architecture independent maxes.
static const int kMaxGeneralRegisters = 32;
static const int kMaxDoubleRegisters = 32;
static const RegisterConfiguration* ArchDefault();
RegisterConfiguration(int num_general_registers, int num_double_registers,
int num_aliased_double_registers,
const char* const* general_register_name,
const char* const* double_register_name);
int num_general_registers() const { return num_general_registers_; }
int num_double_registers() const { return num_double_registers_; }
int num_aliased_double_registers() const {
return num_aliased_double_registers_;
}
const char* general_register_name(int offset) const {
DCHECK(offset >= 0 && offset < kMaxGeneralRegisters);
return general_register_names_[offset];
}
const char* double_register_name(int offset) const {
DCHECK(offset >= 0 && offset < kMaxDoubleRegisters);
return double_register_names_[offset];
}
private:
const int num_general_registers_;
const int num_double_registers_;
const int num_aliased_double_registers_;
const char* const* general_register_names_;
const char* const* double_register_names_;
};
} // namespace compiler
} // namespace internal
} // namespace v8
#endif // V8_COMPILER_REGISTER_CONFIGURATION_H_
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