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1 // Copyright 2015 the V8 project authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/interpreter/bytecode-array-builder.h" | 5 #include "src/interpreter/bytecode-array-builder.h" |
6 | 6 |
7 #include "src/compiler.h" | 7 #include "src/compiler.h" |
8 #include "src/globals.h" | 8 #include "src/globals.h" |
9 #include "src/interpreter/bytecode-array-writer.h" | 9 #include "src/interpreter/bytecode-array-writer.h" |
10 #include "src/interpreter/bytecode-dead-code-optimizer.h" | 10 #include "src/interpreter/bytecode-dead-code-optimizer.h" |
11 #include "src/interpreter/bytecode-label.h" | 11 #include "src/interpreter/bytecode-label.h" |
12 #include "src/interpreter/bytecode-peephole-optimizer.h" | 12 #include "src/interpreter/bytecode-peephole-optimizer.h" |
13 #include "src/interpreter/bytecode-register-optimizer.h" | 13 #include "src/interpreter/bytecode-register-optimizer.h" |
14 #include "src/interpreter/interpreter-intrinsics.h" | 14 #include "src/interpreter/interpreter-intrinsics.h" |
15 | 15 |
16 namespace v8 { | 16 namespace v8 { |
17 namespace internal { | 17 namespace internal { |
18 namespace interpreter { | 18 namespace interpreter { |
19 | 19 |
20 BytecodeArrayBuilder::BytecodeArrayBuilder( | 20 BytecodeArrayBuilder::BytecodeArrayBuilder( |
21 Isolate* isolate, Zone* zone, int parameter_count, int context_count, | 21 Isolate* isolate, Zone* zone, int parameter_count, int context_count, |
22 int locals_count, FunctionLiteral* literal, | 22 int locals_count, FunctionLiteral* literal, |
23 SourcePositionTableBuilder::RecordingMode source_position_mode) | 23 SourcePositionTableBuilder::RecordingMode source_position_mode) |
24 : isolate_(isolate), | 24 : zone_(zone), |
25 zone_(zone), | |
26 bytecode_generated_(false), | 25 bytecode_generated_(false), |
27 constant_array_builder_(isolate, zone), | 26 constant_array_builder_(zone, isolate->factory()->the_hole_value()), |
28 handler_table_builder_(isolate, zone), | 27 handler_table_builder_(zone), |
29 return_seen_in_block_(false), | 28 return_seen_in_block_(false), |
30 parameter_count_(parameter_count), | 29 parameter_count_(parameter_count), |
31 local_register_count_(locals_count), | 30 local_register_count_(locals_count), |
32 context_register_count_(context_count), | 31 context_register_count_(context_count), |
33 temporary_allocator_(zone, fixed_register_count()), | 32 temporary_allocator_(zone, fixed_register_count()), |
34 bytecode_array_writer_(isolate, zone, &constant_array_builder_, | 33 bytecode_array_writer_(zone, &constant_array_builder_, |
35 source_position_mode), | 34 source_position_mode), |
36 pipeline_(&bytecode_array_writer_) { | 35 pipeline_(&bytecode_array_writer_) { |
37 DCHECK_GE(parameter_count_, 0); | 36 DCHECK_GE(parameter_count_, 0); |
38 DCHECK_GE(context_register_count_, 0); | 37 DCHECK_GE(context_register_count_, 0); |
39 DCHECK_GE(local_register_count_, 0); | 38 DCHECK_GE(local_register_count_, 0); |
40 | 39 |
41 if (FLAG_ignition_deadcode) { | 40 if (FLAG_ignition_deadcode) { |
42 pipeline_ = new (zone) BytecodeDeadCodeOptimizer(pipeline_); | 41 pipeline_ = new (zone) BytecodeDeadCodeOptimizer(pipeline_); |
43 } | 42 } |
44 | 43 |
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68 | 67 |
69 Register BytecodeArrayBuilder::Parameter(int parameter_index) const { | 68 Register BytecodeArrayBuilder::Parameter(int parameter_index) const { |
70 DCHECK_GE(parameter_index, 0); | 69 DCHECK_GE(parameter_index, 0); |
71 return Register::FromParameterIndex(parameter_index, parameter_count()); | 70 return Register::FromParameterIndex(parameter_index, parameter_count()); |
72 } | 71 } |
73 | 72 |
74 bool BytecodeArrayBuilder::RegisterIsParameterOrLocal(Register reg) const { | 73 bool BytecodeArrayBuilder::RegisterIsParameterOrLocal(Register reg) const { |
75 return reg.is_parameter() || reg.index() < locals_count(); | 74 return reg.is_parameter() || reg.index() < locals_count(); |
76 } | 75 } |
77 | 76 |
78 Handle<BytecodeArray> BytecodeArrayBuilder::ToBytecodeArray() { | 77 Handle<BytecodeArray> BytecodeArrayBuilder::ToBytecodeArray(Isolate* isolate) { |
79 DCHECK(return_seen_in_block_); | 78 DCHECK(return_seen_in_block_); |
80 DCHECK(!bytecode_generated_); | 79 DCHECK(!bytecode_generated_); |
81 bytecode_generated_ = true; | 80 bytecode_generated_ = true; |
82 | 81 |
83 Handle<FixedArray> handler_table = handler_table_builder()->ToHandlerTable(); | 82 Handle<FixedArray> handler_table = |
84 return pipeline_->ToBytecodeArray(fixed_register_count(), parameter_count(), | 83 handler_table_builder()->ToHandlerTable(isolate); |
85 handler_table); | 84 return pipeline_->ToBytecodeArray(isolate, fixed_register_count(), |
| 85 parameter_count(), handler_table); |
86 } | 86 } |
87 | 87 |
88 namespace { | 88 namespace { |
89 | 89 |
90 static bool ExpressionPositionIsNeeded(Bytecode bytecode) { | 90 static bool ExpressionPositionIsNeeded(Bytecode bytecode) { |
91 // An expression position is always needed if filtering is turned | 91 // An expression position is always needed if filtering is turned |
92 // off. Otherwise an expression is only needed if the bytecode has | 92 // off. Otherwise an expression is only needed if the bytecode has |
93 // external side effects. | 93 // external side effects. |
94 return !FLAG_ignition_filter_expression_positions || | 94 return !FLAG_ignition_filter_expression_positions || |
95 !Bytecodes::IsWithoutExternalSideEffects(bytecode); | 95 !Bytecodes::IsWithoutExternalSideEffects(bytecode); |
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971 return Bytecode::kTailCall; | 971 return Bytecode::kTailCall; |
972 default: | 972 default: |
973 UNREACHABLE(); | 973 UNREACHABLE(); |
974 } | 974 } |
975 return Bytecode::kIllegal; | 975 return Bytecode::kIllegal; |
976 } | 976 } |
977 | 977 |
978 } // namespace interpreter | 978 } // namespace interpreter |
979 } // namespace internal | 979 } // namespace internal |
980 } // namespace v8 | 980 } // namespace v8 |
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