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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/compiler/frame-elider.h" | |
5 #include "src/base/adapters.h" | 6 #include "src/base/adapters.h" |
6 #include "src/compiler/frame-elider.h" | 7 #include "src/compiler/linkage.h" |
7 | 8 |
8 namespace v8 { | 9 namespace v8 { |
9 namespace internal { | 10 namespace internal { |
10 namespace compiler { | 11 namespace compiler { |
11 | 12 |
12 FrameElider::FrameElider(InstructionSequence* code) : code_(code) {} | 13 FrameElider::FrameElider(InstructionSequence* code) : code_(code) {} |
13 | 14 |
14 void FrameElider::Run() { | 15 void FrameElider::Run(const CallDescriptor* descriptor) { |
15 MarkBlocks(); | 16 if (descriptor != nullptr && descriptor->RequiresFrameAsIncoming()) { |
danno
2016/03/18 18:13:00
Passing in the CallDescriptor here seems weird. I
Mircea Trofin
2016/03/18 18:22:31
Done.
| |
17 instruction_blocks()[0]->mark_needs_frame(); | |
18 } else { | |
19 MarkBlocks(); | |
20 } | |
16 PropagateMarks(); | 21 PropagateMarks(); |
17 MarkDeConstruction(); | 22 MarkDeConstruction(); |
18 } | 23 } |
19 | 24 |
20 | 25 |
21 void FrameElider::MarkBlocks() { | 26 void FrameElider::MarkBlocks() { |
22 for (InstructionBlock* block : instruction_blocks()) { | 27 for (InstructionBlock* block : instruction_blocks()) { |
23 if (block->needs_frame()) continue; | 28 if (block->needs_frame()) continue; |
24 for (int i = block->code_start(); i < block->code_end(); ++i) { | 29 for (int i = block->code_start(); i < block->code_end(); ++i) { |
25 if (InstructionAt(i)->IsCall() || | 30 if (InstructionAt(i)->IsCall() || |
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122 } | 127 } |
123 | 128 |
124 | 129 |
125 Instruction* FrameElider::InstructionAt(int index) const { | 130 Instruction* FrameElider::InstructionAt(int index) const { |
126 return code_->InstructionAt(index); | 131 return code_->InstructionAt(index); |
127 } | 132 } |
128 | 133 |
129 } // namespace compiler | 134 } // namespace compiler |
130 } // namespace internal | 135 } // namespace internal |
131 } // namespace v8 | 136 } // namespace v8 |
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