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// 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.
#ifndef V8_INTERPRETER_BYTECODE_TRAITS_H_
#define V8_INTERPRETER_BYTECODE_TRAITS_H_
#include "src/interpreter/bytecode-operands.h"
namespace v8 {
namespace internal {
namespace interpreter {
template <OperandTypeInfo>
struct OperandTypeInfoTraits {
static const bool kIsScalable = false;
static const bool kIsUnsigned = false;
static const OperandSize kUnscaledSize = OperandSize::kNone;
};
#define DECLARE_OPERAND_TYPE_INFO(Name, Scalable, Unsigned, BaseSize) \
template <> \
struct OperandTypeInfoTraits<OperandTypeInfo::k##Name> { \
static const bool kIsScalable = Scalable; \
static const bool kIsUnsigned = Unsigned; \
static const OperandSize kUnscaledSize = BaseSize; \
};
OPERAND_TYPE_INFO_LIST(DECLARE_OPERAND_TYPE_INFO)
#undef DECLARE_OPERAND_TYPE_INFO
template <OperandType>
struct OperandTraits {
typedef OperandTypeInfoTraits<OperandTypeInfo::kNone> TypeInfoTraits;
static const OperandTypeInfo kOperandTypeInfo = OperandTypeInfo::kNone;
};
#define DECLARE_OPERAND_TYPE_TRAITS(Name, InfoType) \
template <> \
struct OperandTraits<OperandType::k##Name> { \
typedef OperandTypeInfoTraits<InfoType> TypeInfoTraits; \
static const OperandTypeInfo kOperandTypeInfo = InfoType; \
};
OPERAND_TYPE_LIST(DECLARE_OPERAND_TYPE_TRAITS)
#undef DECLARE_OPERAND_TYPE_TRAITS
template <OperandType operand_type, OperandScale operand_scale>
struct OperandScaler {
template <bool, OperandSize, OperandScale>
struct Helper {
static const int kSize = 0;
};
template <OperandSize size, OperandScale scale>
struct Helper<false, size, scale> {
static const int kSize = static_cast<int>(size);
};
template <OperandSize size, OperandScale scale>
struct Helper<true, size, scale> {
static const int kSize = static_cast<int>(size) * static_cast<int>(scale);
};
static const int kSize =
Helper<OperandTraits<operand_type>::TypeInfoTraits::kIsScalable,
OperandTraits<operand_type>::TypeInfoTraits::kUnscaledSize,
operand_scale>::kSize;
static const OperandSize kOperandSize = static_cast<OperandSize>(kSize);
};
template <int... values>
struct SumHelper;
template <int value>
struct SumHelper<value> {
static const int kValue = value;
};
template <int value, int... values>
struct SumHelper<value, values...> {
static const int kValue = value + SumHelper<values...>::kValue;
};
template <AccumulatorUse accumulator_use, OperandType... operands>
struct BytecodeTraits {
static const OperandType kOperandTypes[];
static const OperandTypeInfo kOperandTypeInfos[];
static const OperandSize kSingleScaleOperandSizes[];
static const OperandSize kDoubleScaleOperandSizes[];
static const OperandSize kQuadrupleScaleOperandSizes[];
static const int kSingleScaleSize = SumHelper<
1, OperandScaler<operands, OperandScale::kSingle>::kSize...>::kValue;
static const int kDoubleScaleSize = SumHelper<
1, OperandScaler<operands, OperandScale::kDouble>::kSize...>::kValue;
static const int kQuadrupleScaleSize = SumHelper<
1, OperandScaler<operands, OperandScale::kQuadruple>::kSize...>::kValue;
static const AccumulatorUse kAccumulatorUse = accumulator_use;
static const int kOperandCount = sizeof...(operands);
};
template <AccumulatorUse accumulator_use, OperandType... operands>
STATIC_CONST_MEMBER_DEFINITION const OperandType
BytecodeTraits<accumulator_use, operands...>::kOperandTypes[] = {
operands...};
template <AccumulatorUse accumulator_use, OperandType... operands>
STATIC_CONST_MEMBER_DEFINITION const OperandTypeInfo
BytecodeTraits<accumulator_use, operands...>::kOperandTypeInfos[] = {
OperandTraits<operands>::kOperandTypeInfo...};
template <AccumulatorUse accumulator_use, OperandType... operands>
STATIC_CONST_MEMBER_DEFINITION const OperandSize
BytecodeTraits<accumulator_use, operands...>::kSingleScaleOperandSizes[] = {
OperandScaler<operands, OperandScale::kSingle>::kOperandSize...};
template <AccumulatorUse accumulator_use, OperandType... operands>
STATIC_CONST_MEMBER_DEFINITION const OperandSize
BytecodeTraits<accumulator_use, operands...>::kDoubleScaleOperandSizes[] = {
OperandScaler<operands, OperandScale::kDouble>::kOperandSize...};
template <AccumulatorUse accumulator_use, OperandType... operands>
STATIC_CONST_MEMBER_DEFINITION const OperandSize BytecodeTraits<
accumulator_use, operands...>::kQuadrupleScaleOperandSizes[] = {
OperandScaler<operands, OperandScale::kQuadruple>::kOperandSize...};
template <AccumulatorUse accumulator_use>
struct BytecodeTraits<accumulator_use> {
static const OperandType kOperandTypes[];
static const OperandTypeInfo kOperandTypeInfos[];
static const OperandSize kSingleScaleOperandSizes[];
static const OperandSize kDoubleScaleOperandSizes[];
static const OperandSize kQuadrupleScaleOperandSizes[];
static const int kSingleScaleSize = 1;
static const int kDoubleScaleSize = 1;
static const int kQuadrupleScaleSize = 1;
static const AccumulatorUse kAccumulatorUse = accumulator_use;
static const int kOperandCount = 0;
};
template <AccumulatorUse accumulator_use>
STATIC_CONST_MEMBER_DEFINITION const OperandType
BytecodeTraits<accumulator_use>::kOperandTypes[] = {OperandType::kNone};
template <AccumulatorUse accumulator_use>
STATIC_CONST_MEMBER_DEFINITION const OperandTypeInfo
BytecodeTraits<accumulator_use>::kOperandTypeInfos[] = {
OperandTypeInfo::kNone};
template <AccumulatorUse accumulator_use>
STATIC_CONST_MEMBER_DEFINITION const OperandSize
BytecodeTraits<accumulator_use>::kSingleScaleOperandSizes[] = {
OperandSize::kNone};
template <AccumulatorUse accumulator_use>
STATIC_CONST_MEMBER_DEFINITION const OperandSize
BytecodeTraits<accumulator_use>::kDoubleScaleOperandSizes[] = {
OperandSize::kNone};
template <AccumulatorUse accumulator_use>
STATIC_CONST_MEMBER_DEFINITION const OperandSize
BytecodeTraits<accumulator_use>::kQuadrupleScaleOperandSizes[] = {
OperandSize::kNone};
} // namespace interpreter
} // namespace internal
} // namespace v8
#endif // V8_INTERPRETER_BYTECODE_TRAITS_H_
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