// Copyright 2017 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_INTERPRETER_BYTECODE_NODE_H_
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#define V8_INTERPRETER_BYTECODE_NODE_H_
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#include <algorithm>
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#include "src/globals.h"
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#include "src/interpreter/bytecode-source-info.h"
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#include "src/interpreter/bytecodes.h"
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namespace v8 {
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namespace internal {
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namespace interpreter {
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// A container for a generated bytecode, it's operands, and source information.
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class V8_EXPORT_PRIVATE BytecodeNode final {
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public:
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V8_INLINE BytecodeNode(Bytecode bytecode,
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BytecodeSourceInfo source_info = BytecodeSourceInfo())
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: bytecode_(bytecode),
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operand_count_(0),
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operand_scale_(OperandScale::kSingle),
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source_info_(source_info) {
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DCHECK_EQ(Bytecodes::NumberOfOperands(bytecode), operand_count());
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}
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V8_INLINE BytecodeNode(Bytecode bytecode, uint32_t operand0,
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BytecodeSourceInfo source_info = BytecodeSourceInfo())
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: bytecode_(bytecode),
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operand_count_(1),
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operand_scale_(OperandScale::kSingle),
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source_info_(source_info) {
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DCHECK_EQ(Bytecodes::NumberOfOperands(bytecode), operand_count());
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SetOperand(0, operand0);
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}
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V8_INLINE BytecodeNode(Bytecode bytecode, uint32_t operand0,
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uint32_t operand1,
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BytecodeSourceInfo source_info = BytecodeSourceInfo())
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: bytecode_(bytecode),
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operand_count_(2),
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operand_scale_(OperandScale::kSingle),
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source_info_(source_info) {
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DCHECK_EQ(Bytecodes::NumberOfOperands(bytecode), operand_count());
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SetOperand(0, operand0);
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SetOperand(1, operand1);
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}
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V8_INLINE BytecodeNode(Bytecode bytecode, uint32_t operand0,
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uint32_t operand1, uint32_t operand2,
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BytecodeSourceInfo source_info = BytecodeSourceInfo())
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: bytecode_(bytecode),
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operand_count_(3),
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operand_scale_(OperandScale::kSingle),
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source_info_(source_info) {
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DCHECK_EQ(Bytecodes::NumberOfOperands(bytecode), operand_count());
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SetOperand(0, operand0);
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SetOperand(1, operand1);
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SetOperand(2, operand2);
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}
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V8_INLINE BytecodeNode(Bytecode bytecode, uint32_t operand0,
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uint32_t operand1, uint32_t operand2,
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uint32_t operand3,
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BytecodeSourceInfo source_info = BytecodeSourceInfo())
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: bytecode_(bytecode),
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operand_count_(4),
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operand_scale_(OperandScale::kSingle),
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source_info_(source_info) {
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DCHECK_EQ(Bytecodes::NumberOfOperands(bytecode), operand_count());
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SetOperand(0, operand0);
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SetOperand(1, operand1);
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SetOperand(2, operand2);
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SetOperand(3, operand3);
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}
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V8_INLINE BytecodeNode(Bytecode bytecode, uint32_t operand0,
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uint32_t operand1, uint32_t operand2,
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uint32_t operand3, uint32_t operand4,
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BytecodeSourceInfo source_info = BytecodeSourceInfo())
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: bytecode_(bytecode),
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operand_count_(5),
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operand_scale_(OperandScale::kSingle),
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source_info_(source_info) {
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DCHECK_EQ(Bytecodes::NumberOfOperands(bytecode), operand_count());
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SetOperand(0, operand0);
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SetOperand(1, operand1);
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SetOperand(2, operand2);
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SetOperand(3, operand3);
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SetOperand(4, operand4);
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}
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#define DEFINE_BYTECODE_NODE_CREATOR(Name, ...) \
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template <typename... Operands> \
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V8_INLINE static BytecodeNode Name(BytecodeSourceInfo source_info, \
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Operands... operands) { \
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return Create<Bytecode::k##Name, __VA_ARGS__>(source_info, operands...); \
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}
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BYTECODE_LIST(DEFINE_BYTECODE_NODE_CREATOR)
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#undef DEFINE_BYTECODE_NODE_CREATOR
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// Print to stream |os|.
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void Print(std::ostream& os) const;
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Bytecode bytecode() const { return bytecode_; }
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uint32_t operand(int i) const {
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DCHECK_LT(i, operand_count());
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return operands_[i];
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}
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const uint32_t* operands() const { return operands_; }
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void update_operand0(uint32_t operand0) { SetOperand(0, operand0); }
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int operand_count() const { return operand_count_; }
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OperandScale operand_scale() const { return operand_scale_; }
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const BytecodeSourceInfo& source_info() const { return source_info_; }
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void set_source_info(BytecodeSourceInfo source_info) {
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source_info_ = source_info;
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}
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bool operator==(const BytecodeNode& other) const;
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bool operator!=(const BytecodeNode& other) const { return !(*this == other); }
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private:
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template <Bytecode bytecode, AccumulatorUse accumulator_use,
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OperandType... operand_types>
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friend class BytecodeNodeBuilder;
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V8_INLINE BytecodeNode(Bytecode bytecode, int operand_count,
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OperandScale operand_scale,
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BytecodeSourceInfo source_info, uint32_t operand0 = 0,
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uint32_t operand1 = 0, uint32_t operand2 = 0,
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uint32_t operand3 = 0, uint32_t operand4 = 0)
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: bytecode_(bytecode),
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operand_count_(operand_count),
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operand_scale_(operand_scale),
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source_info_(source_info) {
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DCHECK_EQ(Bytecodes::NumberOfOperands(bytecode), operand_count);
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operands_[0] = operand0;
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operands_[1] = operand1;
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operands_[2] = operand2;
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operands_[3] = operand3;
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operands_[4] = operand4;
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}
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template <Bytecode bytecode, AccumulatorUse accum_use>
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V8_INLINE static BytecodeNode Create(BytecodeSourceInfo source_info) {
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return BytecodeNode(bytecode, 0, OperandScale::kSingle, source_info);
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}
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template <Bytecode bytecode, AccumulatorUse accum_use,
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OperandType operand0_type>
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V8_INLINE static BytecodeNode Create(BytecodeSourceInfo source_info,
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uint32_t operand0) {
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DCHECK_EQ(Bytecodes::GetOperandType(bytecode, 0), operand0_type);
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OperandScale scale = OperandScale::kSingle;
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scale = std::max(scale, ScaleForOperand<operand0_type>(operand0));
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return BytecodeNode(bytecode, 1, scale, source_info, operand0);
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}
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template <Bytecode bytecode, AccumulatorUse accum_use,
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OperandType operand0_type, OperandType operand1_type>
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V8_INLINE static BytecodeNode Create(BytecodeSourceInfo source_info,
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uint32_t operand0, uint32_t operand1) {
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DCHECK_EQ(Bytecodes::GetOperandType(bytecode, 0), operand0_type);
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DCHECK_EQ(Bytecodes::GetOperandType(bytecode, 1), operand1_type);
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OperandScale scale = OperandScale::kSingle;
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scale = std::max(scale, ScaleForOperand<operand0_type>(operand0));
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scale = std::max(scale, ScaleForOperand<operand1_type>(operand1));
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return BytecodeNode(bytecode, 2, scale, source_info, operand0, operand1);
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}
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template <Bytecode bytecode, AccumulatorUse accum_use,
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OperandType operand0_type, OperandType operand1_type,
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OperandType operand2_type>
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V8_INLINE static BytecodeNode Create(BytecodeSourceInfo source_info,
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uint32_t operand0, uint32_t operand1,
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uint32_t operand2) {
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DCHECK_EQ(Bytecodes::GetOperandType(bytecode, 0), operand0_type);
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DCHECK_EQ(Bytecodes::GetOperandType(bytecode, 1), operand1_type);
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DCHECK_EQ(Bytecodes::GetOperandType(bytecode, 2), operand2_type);
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OperandScale scale = OperandScale::kSingle;
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scale = std::max(scale, ScaleForOperand<operand0_type>(operand0));
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scale = std::max(scale, ScaleForOperand<operand1_type>(operand1));
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scale = std::max(scale, ScaleForOperand<operand2_type>(operand2));
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return BytecodeNode(bytecode, 3, scale, source_info, operand0, operand1,
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operand2);
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}
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template <Bytecode bytecode, AccumulatorUse accum_use,
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OperandType operand0_type, OperandType operand1_type,
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OperandType operand2_type, OperandType operand3_type>
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V8_INLINE static BytecodeNode Create(BytecodeSourceInfo source_info,
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uint32_t operand0, uint32_t operand1,
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uint32_t operand2, uint32_t operand3) {
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DCHECK_EQ(Bytecodes::GetOperandType(bytecode, 0), operand0_type);
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DCHECK_EQ(Bytecodes::GetOperandType(bytecode, 1), operand1_type);
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DCHECK_EQ(Bytecodes::GetOperandType(bytecode, 2), operand2_type);
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DCHECK_EQ(Bytecodes::GetOperandType(bytecode, 3), operand3_type);
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OperandScale scale = OperandScale::kSingle;
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scale = std::max(scale, ScaleForOperand<operand0_type>(operand0));
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scale = std::max(scale, ScaleForOperand<operand1_type>(operand1));
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scale = std::max(scale, ScaleForOperand<operand2_type>(operand2));
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scale = std::max(scale, ScaleForOperand<operand3_type>(operand3));
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return BytecodeNode(bytecode, 4, scale, source_info, operand0, operand1,
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operand2, operand3);
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}
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template <Bytecode bytecode, AccumulatorUse accum_use,
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OperandType operand0_type, OperandType operand1_type,
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OperandType operand2_type, OperandType operand3_type,
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OperandType operand4_type>
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V8_INLINE static BytecodeNode Create(BytecodeSourceInfo source_info,
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uint32_t operand0, uint32_t operand1,
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uint32_t operand2, uint32_t operand3,
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uint32_t operand4) {
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DCHECK_EQ(Bytecodes::GetOperandType(bytecode, 0), operand0_type);
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DCHECK_EQ(Bytecodes::GetOperandType(bytecode, 1), operand1_type);
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DCHECK_EQ(Bytecodes::GetOperandType(bytecode, 2), operand2_type);
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DCHECK_EQ(Bytecodes::GetOperandType(bytecode, 3), operand3_type);
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DCHECK_EQ(Bytecodes::GetOperandType(bytecode, 4), operand4_type);
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OperandScale scale = OperandScale::kSingle;
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scale = std::max(scale, ScaleForOperand<operand0_type>(operand0));
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scale = std::max(scale, ScaleForOperand<operand1_type>(operand1));
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scale = std::max(scale, ScaleForOperand<operand2_type>(operand2));
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scale = std::max(scale, ScaleForOperand<operand3_type>(operand3));
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scale = std::max(scale, ScaleForOperand<operand4_type>(operand4));
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return BytecodeNode(bytecode, 5, scale, source_info, operand0, operand1,
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operand2, operand3, operand4);
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}
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template <OperandType operand_type>
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V8_INLINE static OperandScale ScaleForOperand(uint32_t operand) {
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if (BytecodeOperands::IsScalableUnsignedByte(operand_type)) {
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return Bytecodes::ScaleForUnsignedOperand(operand);
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} else if (BytecodeOperands::IsScalableSignedByte(operand_type)) {
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return Bytecodes::ScaleForSignedOperand(operand);
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} else {
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return OperandScale::kSingle;
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}
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}
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V8_INLINE void UpdateScaleForOperand(int operand_index, uint32_t operand) {
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if (Bytecodes::OperandIsScalableSignedByte(bytecode(), operand_index)) {
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operand_scale_ =
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std::max(operand_scale_, Bytecodes::ScaleForSignedOperand(operand));
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} else if (Bytecodes::OperandIsScalableUnsignedByte(bytecode(),
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operand_index)) {
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operand_scale_ =
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std::max(operand_scale_, Bytecodes::ScaleForUnsignedOperand(operand));
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}
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}
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V8_INLINE void SetOperand(int operand_index, uint32_t operand) {
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operands_[operand_index] = operand;
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UpdateScaleForOperand(operand_index, operand);
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}
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Bytecode bytecode_;
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uint32_t operands_[Bytecodes::kMaxOperands];
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int operand_count_;
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OperandScale operand_scale_;
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BytecodeSourceInfo source_info_;
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};
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V8_EXPORT_PRIVATE std::ostream& operator<<(std::ostream& os,
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const BytecodeNode& node);
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} // namespace interpreter
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} // namespace internal
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} // namespace v8
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#endif // V8_INTERPRETER_BYTECODE_NODE_H_
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