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// 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_REGISTER_ARCH_H_
#define V8_CODEGEN_REGISTER_ARCH_H_
#include "src/codegen/register.h"
#include "src/codegen/reglist.h"
#if V8_TARGET_ARCH_IA32
#include "src/codegen/ia32/register-ia32.h"
#elif V8_TARGET_ARCH_X64
#include "src/codegen/x64/register-x64.h"
#elif V8_TARGET_ARCH_ARM64
#include "src/codegen/arm64/register-arm64.h"
#elif V8_TARGET_ARCH_ARM
#include "src/codegen/arm/register-arm.h"
#elif V8_TARGET_ARCH_PPC || V8_TARGET_ARCH_PPC64
#include "src/codegen/ppc/register-ppc.h"
#elif V8_TARGET_ARCH_MIPS
#include "src/codegen/mips/register-mips.h"
#elif V8_TARGET_ARCH_MIPS64
#include "src/codegen/mips64/register-mips64.h"
#elif V8_TARGET_ARCH_LOONG64
#include "src/codegen/loong64/register-loong64.h"
#elif V8_TARGET_ARCH_S390
#include "src/codegen/s390/register-s390.h"
#elif V8_TARGET_ARCH_RISCV64
#include "src/codegen/riscv64/register-riscv64.h"
#else
#error Unknown architecture.
#endif
namespace v8 {
namespace internal {
constexpr int AddArgumentPaddingSlots(int argument_count) {
return argument_count + ArgumentPaddingSlots(argument_count);
}
constexpr bool ShouldPadArguments(int argument_count) {
return ArgumentPaddingSlots(argument_count) != 0;
}
#ifdef DEBUG
struct CountIfValidRegisterFunctor {
template <typename RegType>
constexpr int operator()(int count, RegType reg) const {
return count + (reg.is_valid() ? 1 : 0);
}
};
template <typename RegType, typename... RegTypes,
// All arguments must be either Register or DoubleRegister.
typename = typename std::enable_if<
base::is_same<Register, RegType, RegTypes...>::value ||
base::is_same<DoubleRegister, RegType, RegTypes...>::value>::type>
inline constexpr bool AreAliased(RegType first_reg, RegTypes... regs) {
int num_different_regs = NumRegs(RegType::ListOf(first_reg, regs...));
int num_given_regs =
base::fold(CountIfValidRegisterFunctor{}, 0, first_reg, regs...);
return num_different_regs < num_given_regs;
}
#endif
} // namespace internal
} // namespace v8
#endif // V8_CODEGEN_REGISTER_ARCH_H_
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