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| 1 // Copyright 2015 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 #include "src/compiler/interpreter-assembler.h" |
| 6 |
| 7 #include <ostream> |
| 8 |
| 9 #include "src/compiler/graph.h" |
| 10 #include "src/compiler/instruction-selector.h" |
| 11 #include "src/compiler/linkage.h" |
| 12 #include "src/compiler/machine-type.h" |
| 13 #include "src/compiler/pipeline.h" |
| 14 #include "src/compiler/raw-machine-assembler.h" |
| 15 #include "src/compiler/schedule.h" |
| 16 #include "src/frames.h" |
| 17 #include "src/interpreter/bytecodes.h" |
| 18 #include "src/macro-assembler.h" |
| 19 #include "src/zone.h" |
| 20 |
| 21 namespace v8 { |
| 22 namespace internal { |
| 23 namespace compiler { |
| 24 |
| 25 |
| 26 InterpreterAssembler::InterpreterAssembler(Isolate* isolate, Zone* zone, |
| 27 interpreter::Bytecode bytecode) |
| 28 : zone_(zone), |
| 29 bytecode_(bytecode), |
| 30 call_descriptor_(Linkage::GetInterpreterDispatchDescriptor( |
| 31 zone, interpreter::Bytecodes::IsReturn(bytecode))), |
| 32 raw_assembler_(new RawMachineAssembler( |
| 33 isolate, new (zone) Graph(zone), |
| 34 call_descriptor_->GetMachineSignature(), kMachPtr, |
| 35 InstructionSelector::SupportedMachineOperatorFlags(), |
| 36 call_descriptor_)), |
| 37 code_generated_(false) {} |
| 38 |
| 39 |
| 40 InterpreterAssembler::~InterpreterAssembler() {} |
| 41 |
| 42 |
| 43 Handle<Code> InterpreterAssembler::GenerateCode() { |
| 44 DCHECK(!code_generated_); |
| 45 |
| 46 Schedule* schedule = raw_assembler_->Export(); |
| 47 // TODO(rmcilroy): use a non-testing code generator. |
| 48 Handle<Code> code = Pipeline::GenerateCodeForTesting( |
| 49 isolate(), raw_assembler_->call_descriptor(), graph(), schedule); |
| 50 |
| 51 #ifdef ENABLE_DISASSEMBLER |
| 52 if (FLAG_trace_ignition_codegen) { |
| 53 OFStream os(stdout); |
| 54 code->Disassemble(interpreter::Bytecodes::ToString(bytecode_), os); |
| 55 os << std::flush; |
| 56 } |
| 57 #endif |
| 58 |
| 59 code_generated_ = true; |
| 60 return code; |
| 61 } |
| 62 |
| 63 |
| 64 Node* InterpreterAssembler::BytecodePointer() { |
| 65 return raw_assembler_->Parameter(kBytecodePointerParameter); |
| 66 } |
| 67 |
| 68 |
| 69 Node* InterpreterAssembler::DispatchTablePointer() { |
| 70 return raw_assembler_->Parameter(kDispatchTablePointerParameter); |
| 71 } |
| 72 |
| 73 |
| 74 Node* InterpreterAssembler::FramePointer() { |
| 75 return raw_assembler_->LoadFramePointer(); |
| 76 } |
| 77 |
| 78 |
| 79 Node* InterpreterAssembler::RegisterFrameOffset(int index) { |
| 80 return Int32Constant(-StandardFrameConstants::kFixedFrameSizeFromFp - |
| 81 (index << kPointerSizeLog2)); |
| 82 } |
| 83 |
| 84 |
| 85 Node* InterpreterAssembler::RegisterFrameOffset(Node* index) { |
| 86 return raw_assembler_->Int32Sub( |
| 87 Int32Constant(-StandardFrameConstants::kFixedFrameSizeFromFp), |
| 88 raw_assembler_->WordShl(index, Int32Constant(kPointerSizeLog2))); |
| 89 } |
| 90 |
| 91 |
| 92 Node* InterpreterAssembler::BytecodeArg(int delta) { |
| 93 DCHECK_LT(delta, interpreter::Bytecodes::NumberOfArguments(bytecode_)); |
| 94 return raw_assembler_->Load(kMachUint8, BytecodePointer(), |
| 95 Int32Constant(1 + delta)); |
| 96 } |
| 97 |
| 98 |
| 99 Node* InterpreterAssembler::LoadRegister(int index) { |
| 100 return raw_assembler_->Load(kMachPtr, FramePointer(), |
| 101 RegisterFrameOffset(index)); |
| 102 } |
| 103 |
| 104 |
| 105 Node* InterpreterAssembler::LoadRegister(Node* index) { |
| 106 return raw_assembler_->Load(kMachPtr, FramePointer(), |
| 107 RegisterFrameOffset(index)); |
| 108 } |
| 109 |
| 110 |
| 111 void InterpreterAssembler::StoreRegister(Node* value, int index) { |
| 112 raw_assembler_->Store(kMachPtr, FramePointer(), RegisterFrameOffset(index), |
| 113 value); |
| 114 } |
| 115 |
| 116 |
| 117 void InterpreterAssembler::StoreRegister(Node* value, Node* index) { |
| 118 raw_assembler_->Store(kMachPtr, FramePointer(), RegisterFrameOffset(index), |
| 119 value); |
| 120 } |
| 121 |
| 122 |
| 123 void InterpreterAssembler::Return(Node* value) { |
| 124 return raw_assembler_->Return(value); |
| 125 } |
| 126 |
| 127 |
| 128 Node* InterpreterAssembler::Advance(int delta) { |
| 129 return raw_assembler_->IntPtrAdd(BytecodePointer(), Int32Constant(delta)); |
| 130 } |
| 131 |
| 132 |
| 133 void InterpreterAssembler::Dispatch() { |
| 134 Node* new_bytecode_pointer = Advance(interpreter::Bytecodes::Size(bytecode_)); |
| 135 Node* target_bytecode = |
| 136 raw_assembler_->Load(kMachUint8, new_bytecode_pointer); |
| 137 |
| 138 // TODO(rmcilroy): Create a code target dispatch table to avoid conversion |
| 139 // from code object on every dispatch. |
| 140 Node* target_code_object = raw_assembler_->Load( |
| 141 kMachPtr, DispatchTablePointer(), |
| 142 raw_assembler_->WordShl(target_bytecode, |
| 143 Int32Constant(kPointerSizeLog2))); |
| 144 |
| 145 // If the order of the parameters you need to change the call signature below. |
| 146 DCHECK_EQ(0, kBytecodePointerParameter); |
| 147 DCHECK_EQ(1, kDispatchTablePointerParameter); |
| 148 Node* tail_call = graph()->NewNode( |
| 149 common()->TailCall( |
| 150 Linkage::GetInterpreterDispatchDescriptor(zone_, false)), |
| 151 target_code_object, new_bytecode_pointer, DispatchTablePointer()); |
| 152 schedule()->AddTailCall(raw_assembler_->CurrentBlock(), tail_call); |
| 153 } |
| 154 |
| 155 |
| 156 // RawMachineAssembler delegate helpers: |
| 157 Isolate* InterpreterAssembler::isolate() { return raw_assembler_->isolate(); } |
| 158 |
| 159 |
| 160 Graph* InterpreterAssembler::graph() { return raw_assembler_->graph(); } |
| 161 |
| 162 |
| 163 Schedule* InterpreterAssembler::schedule() { |
| 164 return raw_assembler_->schedule(); |
| 165 } |
| 166 |
| 167 |
| 168 MachineOperatorBuilder* InterpreterAssembler::machine() { |
| 169 return raw_assembler_->machine(); |
| 170 } |
| 171 |
| 172 |
| 173 CommonOperatorBuilder* InterpreterAssembler::common() { |
| 174 return raw_assembler_->common(); |
| 175 } |
| 176 |
| 177 |
| 178 Node* InterpreterAssembler::Int32Constant(int value) { |
| 179 return raw_assembler_->Int32Constant(value); |
| 180 } |
| 181 |
| 182 |
| 183 Node* InterpreterAssembler::NumberConstant(double value) { |
| 184 return raw_assembler_->NumberConstant(value); |
| 185 } |
| 186 |
| 187 |
| 188 } // namespace interpreter |
| 189 } // namespace internal |
| 190 } // namespace v8 |
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