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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-store-elimination.h" | 5 #include "hydrogen-store-elimination.h" |
29 #include "hydrogen-instructions.h" | 6 #include "hydrogen-instructions.h" |
30 | 7 |
31 namespace v8 { | 8 namespace v8 { |
32 namespace internal { | 9 namespace internal { |
33 | 10 |
34 #define TRACE(x) if (FLAG_trace_store_elimination) PrintF x | 11 #define TRACE(x) if (FLAG_trace_store_elimination) PrintF x |
35 | 12 |
36 // Performs a block-by-block local analysis for removable stores. | 13 // Performs a block-by-block local analysis for removable stores. |
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130 return; | 107 return; |
131 } | 108 } |
132 if (instr->DependsOnFlags().ContainsAnyOf(flags)) { | 109 if (instr->DependsOnFlags().ContainsAnyOf(flags)) { |
133 TRACE(("-- Observed stores at I%d (GVN flags)\n", instr->id())); | 110 TRACE(("-- Observed stores at I%d (GVN flags)\n", instr->id())); |
134 unobserved_.Rewind(0); | 111 unobserved_.Rewind(0); |
135 return; | 112 return; |
136 } | 113 } |
137 } | 114 } |
138 | 115 |
139 } } // namespace v8::internal | 116 } } // namespace v8::internal |
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