| // Copyright 2013 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_CODE_GENERATOR_IMPL_H_ |
| #define V8_COMPILER_CODE_GENERATOR_IMPL_H_ |
| |
| #include "src/code-stubs.h" |
| #include "src/compiler/code-generator.h" |
| #include "src/compiler/instruction.h" |
| #include "src/compiler/linkage.h" |
| #include "src/compiler/opcodes.h" |
| #include "src/macro-assembler.h" |
| |
| namespace v8 { |
| namespace internal { |
| namespace compiler { |
| |
| // Converts InstructionOperands from a given instruction to |
| // architecture-specific |
| // registers and operands after they have been assigned by the register |
| // allocator. |
| class InstructionOperandConverter { |
| public: |
| InstructionOperandConverter(CodeGenerator* gen, Instruction* instr) |
| : gen_(gen), instr_(instr) {} |
| |
| // -- Instruction operand accesses with conversions -------------------------- |
| |
| Register InputRegister(int index) { |
| return ToRegister(instr_->InputAt(index)); |
| } |
| |
| DoubleRegister InputDoubleRegister(int index) { |
| return ToDoubleRegister(instr_->InputAt(index)); |
| } |
| |
| double InputDouble(int index) { return ToDouble(instr_->InputAt(index)); } |
| |
| int32_t InputInt32(int index) { |
| return ToConstant(instr_->InputAt(index)).ToInt32(); |
| } |
| |
| int8_t InputInt8(int index) { return static_cast<int8_t>(InputInt32(index)); } |
| |
| int16_t InputInt16(int index) { |
| return static_cast<int16_t>(InputInt32(index)); |
| } |
| |
| uint8_t InputInt5(int index) { |
| return static_cast<uint8_t>(InputInt32(index) & 0x1F); |
| } |
| |
| uint8_t InputInt6(int index) { |
| return static_cast<uint8_t>(InputInt32(index) & 0x3F); |
| } |
| |
| Handle<HeapObject> InputHeapObject(int index) { |
| return ToHeapObject(instr_->InputAt(index)); |
| } |
| |
| Label* InputLabel(int index) { return ToLabel(instr_->InputAt(index)); } |
| |
| BasicBlock::RpoNumber InputRpo(int index) { |
| return ToRpoNumber(instr_->InputAt(index)); |
| } |
| |
| Register OutputRegister(int index = 0) { |
| return ToRegister(instr_->OutputAt(index)); |
| } |
| |
| Register TempRegister(int index) { return ToRegister(instr_->TempAt(index)); } |
| |
| DoubleRegister OutputDoubleRegister() { |
| return ToDoubleRegister(instr_->Output()); |
| } |
| |
| // -- Conversions for operands ----------------------------------------------- |
| |
| Label* ToLabel(InstructionOperand* op) { |
| return gen_->GetLabel(ToRpoNumber(op)); |
| } |
| |
| BasicBlock::RpoNumber ToRpoNumber(InstructionOperand* op) { |
| return ToConstant(op).ToRpoNumber(); |
| } |
| |
| Register ToRegister(InstructionOperand* op) { |
| DCHECK(op->IsRegister()); |
| return Register::FromAllocationIndex(op->index()); |
| } |
| |
| DoubleRegister ToDoubleRegister(InstructionOperand* op) { |
| DCHECK(op->IsDoubleRegister()); |
| return DoubleRegister::FromAllocationIndex(op->index()); |
| } |
| |
| Constant ToConstant(InstructionOperand* op) { |
| if (op->IsImmediate()) { |
| return gen_->code()->GetImmediate(op->index()); |
| } |
| return gen_->code()->GetConstant(op->index()); |
| } |
| |
| double ToDouble(InstructionOperand* op) { return ToConstant(op).ToFloat64(); } |
| |
| Handle<HeapObject> ToHeapObject(InstructionOperand* op) { |
| return ToConstant(op).ToHeapObject(); |
| } |
| |
| Frame* frame() const { return gen_->frame(); } |
| Isolate* isolate() const { return gen_->isolate(); } |
| Linkage* linkage() const { return gen_->linkage(); } |
| |
| protected: |
| CodeGenerator* gen_; |
| Instruction* instr_; |
| }; |
| |
| |
| // Generator for out-of-line code that is emitted after the main code is done. |
| class OutOfLineCode : public ZoneObject { |
| public: |
| explicit OutOfLineCode(CodeGenerator* gen); |
| virtual ~OutOfLineCode(); |
| |
| virtual void Generate() = 0; |
| |
| Label* entry() { return &entry_; } |
| Label* exit() { return &exit_; } |
| MacroAssembler* masm() const { return masm_; } |
| OutOfLineCode* next() const { return next_; } |
| |
| private: |
| Label entry_; |
| Label exit_; |
| MacroAssembler* const masm_; |
| OutOfLineCode* const next_; |
| }; |
| |
| |
| // TODO(dcarney): generify this on bleeding_edge and replace this call |
| // when merged. |
| static inline void FinishCode(MacroAssembler* masm) { |
| #if V8_TARGET_ARCH_ARM64 || V8_TARGET_ARCH_ARM |
| masm->CheckConstPool(true, false); |
| #endif |
| } |
| |
| } // namespace compiler |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif // V8_COMPILER_CODE_GENERATOR_IMPL_H |