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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // modification, are permitted provided that the following conditions are | 3 // found in the LICENSE file. |
4 // met: | |
5 // | |
6 // * Redistributions of source code must retain the above copyright | |
7 // notice, this list of conditions and the following disclaimer. | |
8 // * Redistributions in binary form must reproduce the above | |
9 // copyright notice, this list of conditions and the following | |
10 // disclaimer in the documentation and/or other materials provided | |
11 // with the distribution. | |
12 // * Neither the name of Google Inc. nor the names of its | |
13 // contributors may be used to endorse or promote products derived | |
14 // from this software without specific prior written permission. | |
15 // | |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
27 | 4 |
28 #include "hydrogen-dce.h" | 5 #include "hydrogen-dce.h" |
29 #include "v8.h" | 6 #include "v8.h" |
30 | 7 |
31 namespace v8 { | 8 namespace v8 { |
32 namespace internal { | 9 namespace internal { |
33 | 10 |
34 void HDeadCodeEliminationPhase::MarkLive( | 11 void HDeadCodeEliminationPhase::MarkLive( |
35 HValue* instr, ZoneList<HValue*>* worklist) { | 12 HValue* instr, ZoneList<HValue*>* worklist) { |
36 if (instr->CheckFlag(HValue::kIsLive)) return; // Already live. | 13 if (instr->CheckFlag(HValue::kIsLive)) return; // Already live. |
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120 HPhi* phi = worklist.RemoveLast(); | 97 HPhi* phi = worklist.RemoveLast(); |
121 HBasicBlock* block = phi->block(); | 98 HBasicBlock* block = phi->block(); |
122 phi->DeleteAndReplaceWith(NULL); | 99 phi->DeleteAndReplaceWith(NULL); |
123 if (phi->HasMergedIndex()) { | 100 if (phi->HasMergedIndex()) { |
124 block->RecordDeletedPhi(phi->merged_index()); | 101 block->RecordDeletedPhi(phi->merged_index()); |
125 } | 102 } |
126 } | 103 } |
127 } | 104 } |
128 | 105 |
129 } } // namespace v8::internal | 106 } } // namespace v8::internal |
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