Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1 | // Copyright 2013 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #ifndef V8_COMPILER_CODE_GENERATOR_IMPL_H_ |
| 6 | #define V8_COMPILER_CODE_GENERATOR_IMPL_H_ |
| 7 | |
| 8 | #include "src/compiler/code-generator.h" |
| 9 | #include "src/compiler/common-operator.h" |
| 10 | #include "src/compiler/generic-graph.h" |
| 11 | #include "src/compiler/instruction.h" |
| 12 | #include "src/compiler/linkage.h" |
| 13 | #include "src/compiler/machine-operator.h" |
| 14 | #include "src/compiler/node.h" |
| 15 | #include "src/compiler/opcodes.h" |
| 16 | #include "src/compiler/operator.h" |
| 17 | |
| 18 | namespace v8 { |
| 19 | namespace internal { |
| 20 | namespace compiler { |
| 21 | |
| 22 | // Converts InstructionOperands from a given instruction to |
| 23 | // architecture-specific |
| 24 | // registers and operands after they have been assigned by the register |
| 25 | // allocator. |
| 26 | class InstructionOperandConverter { |
| 27 | public: |
| 28 | InstructionOperandConverter(CodeGenerator* gen, Instruction* instr) |
| 29 | : gen_(gen), instr_(instr) {} |
| 30 | |
| 31 | Register InputRegister(int index) { |
| 32 | return ToRegister(instr_->InputAt(index)); |
| 33 | } |
| 34 | |
| 35 | DoubleRegister InputDoubleRegister(int index) { |
| 36 | return ToDoubleRegister(instr_->InputAt(index)); |
| 37 | } |
| 38 | |
| 39 | double InputDouble(int index) { return ToDouble(instr_->InputAt(index)); } |
| 40 | |
| 41 | int32_t InputInt32(int index) { |
| 42 | return ToConstant(instr_->InputAt(index)).ToInt32(); |
| 43 | } |
| 44 | |
| 45 | int8_t InputInt8(int index) { return static_cast<int8_t>(InputInt32(index)); } |
| 46 | |
| 47 | int16_t InputInt16(int index) { |
| 48 | return static_cast<int16_t>(InputInt32(index)); |
| 49 | } |
| 50 | |
| 51 | uint8_t InputInt5(int index) { |
| 52 | return static_cast<uint8_t>(InputInt32(index) & 0x1F); |
| 53 | } |
| 54 | |
| 55 | uint8_t InputInt6(int index) { |
| 56 | return static_cast<uint8_t>(InputInt32(index) & 0x3F); |
| 57 | } |
| 58 | |
| 59 | Handle<HeapObject> InputHeapObject(int index) { |
| 60 | return ToHeapObject(instr_->InputAt(index)); |
| 61 | } |
| 62 | |
| 63 | Label* InputLabel(int index) { |
| 64 | return gen_->code()->GetLabel(InputBlock(index)); |
| 65 | } |
| 66 | |
| 67 | BasicBlock* InputBlock(int index) { |
| 68 | NodeId block_id = static_cast<NodeId>(InputInt32(index)); |
| 69 | // operand should be a block id. |
| 70 | DCHECK(block_id >= 0); |
| 71 | DCHECK(block_id < gen_->schedule()->BasicBlockCount()); |
| 72 | return gen_->schedule()->GetBlockById(block_id); |
| 73 | } |
| 74 | |
| 75 | Register OutputRegister(int index = 0) { |
| 76 | return ToRegister(instr_->OutputAt(index)); |
| 77 | } |
| 78 | |
| 79 | DoubleRegister OutputDoubleRegister() { |
| 80 | return ToDoubleRegister(instr_->Output()); |
| 81 | } |
| 82 | |
| 83 | Register TempRegister(int index) { return ToRegister(instr_->TempAt(index)); } |
| 84 | |
| 85 | Register ToRegister(InstructionOperand* op) { |
| 86 | DCHECK(op->IsRegister()); |
| 87 | return Register::FromAllocationIndex(op->index()); |
| 88 | } |
| 89 | |
| 90 | DoubleRegister ToDoubleRegister(InstructionOperand* op) { |
| 91 | DCHECK(op->IsDoubleRegister()); |
| 92 | return DoubleRegister::FromAllocationIndex(op->index()); |
| 93 | } |
| 94 | |
| 95 | Constant ToConstant(InstructionOperand* operand) { |
| 96 | if (operand->IsImmediate()) { |
| 97 | return gen_->code()->GetImmediate(operand->index()); |
| 98 | } |
| 99 | return gen_->code()->GetConstant(operand->index()); |
| 100 | } |
| 101 | |
| 102 | double ToDouble(InstructionOperand* operand) { |
| 103 | return ToConstant(operand).ToFloat64(); |
| 104 | } |
| 105 | |
| 106 | Handle<HeapObject> ToHeapObject(InstructionOperand* operand) { |
| 107 | return ToConstant(operand).ToHeapObject(); |
| 108 | } |
| 109 | |
| 110 | Frame* frame() const { return gen_->frame(); } |
| 111 | Isolate* isolate() const { return gen_->isolate(); } |
| 112 | Linkage* linkage() const { return gen_->linkage(); } |
| 113 | |
| 114 | protected: |
| 115 | CodeGenerator* gen_; |
| 116 | Instruction* instr_; |
| 117 | }; |
| 118 | |
| 119 | |
| 120 | // TODO(dcarney): generify this on bleeding_edge and replace this call |
| 121 | // when merged. |
| 122 | static inline void FinishCode(MacroAssembler* masm) { |
| 123 | #if V8_TARGET_ARCH_ARM64 || V8_TARGET_ARCH_ARM |
| 124 | masm->CheckConstPool(true, false); |
| 125 | #endif |
| 126 | } |
| 127 | |
| 128 | } // namespace compiler |
| 129 | } // namespace internal |
| 130 | } // namespace v8 |
| 131 | |
| 132 | #endif // V8_COMPILER_CODE_GENERATOR_IMPL_H |