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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/base/adapters.h" | 5 #include "src/base/adapters.h" |
6 #include "src/compiler/frame-elider.h" | 6 #include "src/compiler/frame-elider.h" |
7 | 7 |
8 namespace v8 { | 8 namespace v8 { |
9 namespace internal { | 9 namespace internal { |
10 namespace compiler { | 10 namespace compiler { |
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41 for (auto block : instruction_blocks()) { | 41 for (auto block : instruction_blocks()) { |
42 if (block->needs_frame()) { | 42 if (block->needs_frame()) { |
43 // Special case: The start block needs a frame. | 43 // Special case: The start block needs a frame. |
44 if (block->predecessors().empty()) { | 44 if (block->predecessors().empty()) { |
45 block->mark_must_construct_frame(); | 45 block->mark_must_construct_frame(); |
46 } | 46 } |
47 // Find "frame -> no frame" transitions, inserting frame | 47 // Find "frame -> no frame" transitions, inserting frame |
48 // deconstructions. | 48 // deconstructions. |
49 for (auto succ : block->successors()) { | 49 for (auto succ : block->successors()) { |
50 if (!InstructionBlockAt(succ)->needs_frame()) { | 50 if (!InstructionBlockAt(succ)->needs_frame()) { |
51 DCHECK_EQ(1, block->SuccessorCount()); | 51 DCHECK_EQ(1U, block->SuccessorCount()); |
52 block->mark_must_deconstruct_frame(); | 52 block->mark_must_deconstruct_frame(); |
53 } | 53 } |
54 } | 54 } |
55 } else { | 55 } else { |
56 // Find "no frame -> frame" transitions, inserting frame constructions. | 56 // Find "no frame -> frame" transitions, inserting frame constructions. |
57 for (auto succ : block->successors()) { | 57 for (auto succ : block->successors()) { |
58 if (InstructionBlockAt(succ)->needs_frame()) { | 58 if (InstructionBlockAt(succ)->needs_frame()) { |
59 DCHECK_NE(1, block->SuccessorCount()); | 59 DCHECK_NE(1U, block->SuccessorCount()); |
60 InstructionBlockAt(succ)->mark_must_construct_frame(); | 60 InstructionBlockAt(succ)->mark_must_construct_frame(); |
61 } | 61 } |
62 } | 62 } |
63 } | 63 } |
64 } | 64 } |
65 } | 65 } |
66 | 66 |
67 | 67 |
68 bool FrameElider::PropagateInOrder() { | 68 bool FrameElider::PropagateInOrder() { |
69 bool changed = false; | 69 bool changed = false; |
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121 } | 121 } |
122 | 122 |
123 | 123 |
124 Instruction* FrameElider::InstructionAt(int index) const { | 124 Instruction* FrameElider::InstructionAt(int index) const { |
125 return code_->InstructionAt(index); | 125 return code_->InstructionAt(index); |
126 } | 126 } |
127 | 127 |
128 } // namespace compiler | 128 } // namespace compiler |
129 } // namespace internal | 129 } // namespace internal |
130 } // namespace v8 | 130 } // namespace v8 |
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