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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 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/gap-resolver.h" | 5 #include "src/compiler/gap-resolver.h" |
6 | 6 |
7 #include <algorithm> | 7 #include <algorithm> |
8 #include <functional> | 8 #include <functional> |
9 #include <set> | 9 #include <set> |
10 | 10 |
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68 } | 68 } |
69 } | 69 } |
70 | 70 |
71 // We are about to resolve this move and don't need it marked as pending, so | 71 // We are about to resolve this move and don't need it marked as pending, so |
72 // restore its destination. | 72 // restore its destination. |
73 move->set_destination(destination); | 73 move->set_destination(destination); |
74 | 74 |
75 // This move's source may have changed due to swaps to resolve cycles and so | 75 // This move's source may have changed due to swaps to resolve cycles and so |
76 // it may now be the last move in the cycle. If so remove it. | 76 // it may now be the last move in the cycle. If so remove it. |
77 InstructionOperand source = move->source(); | 77 InstructionOperand source = move->source(); |
78 if (source.EqualsModuloType(destination)) { | 78 if (source == destination) { |
79 move->Eliminate(); | 79 move->Eliminate(); |
80 return; | 80 return; |
81 } | 81 } |
82 | 82 |
83 // The move may be blocked on a (at most one) pending move, in which case we | 83 // The move may be blocked on a (at most one) pending move, in which case we |
84 // have a cycle. Search for such a blocking move and perform a swap to | 84 // have a cycle. Search for such a blocking move and perform a swap to |
85 // resolve it. | 85 // resolve it. |
86 auto blocker = std::find_if(moves->begin(), moves->end(), | 86 auto blocker = std::find_if(moves->begin(), moves->end(), |
87 std::bind2nd(std::ptr_fun(&Blocks), destination)); | 87 std::bind2nd(std::ptr_fun(&Blocks), destination)); |
88 if (blocker == moves->end()) { | 88 if (blocker == moves->end()) { |
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107 if (other->Blocks(source)) { | 107 if (other->Blocks(source)) { |
108 other->set_source(destination); | 108 other->set_source(destination); |
109 } else if (other->Blocks(destination)) { | 109 } else if (other->Blocks(destination)) { |
110 other->set_source(source); | 110 other->set_source(source); |
111 } | 111 } |
112 } | 112 } |
113 } | 113 } |
114 } | 114 } |
115 } | 115 } |
116 } // namespace v8::internal::compiler | 116 } // namespace v8::internal::compiler |
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