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Side by Side Diff: src/compiler/interpreter-assembler.cc

Issue 1239793002: [interpreter] Add basic framework for bytecode handler code generation. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 5 months ago
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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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