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Side by Side Diff: src/compiler/phi-reducer.h

Issue 526223002: Use Chrome compatible naming for compiler specifics. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: mips Created 6 years, 3 months ago
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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 #ifndef V8_COMPILER_PHI_REDUCER_H_ 5 #ifndef V8_COMPILER_PHI_REDUCER_H_
6 #define V8_COMPILER_PHI_REDUCER_H_ 6 #define V8_COMPILER_PHI_REDUCER_H_
7 7
8 #include "src/compiler/graph-reducer.h" 8 #include "src/compiler/graph-reducer.h"
9 9
10 namespace v8 { 10 namespace v8 {
11 namespace internal { 11 namespace internal {
12 namespace compiler { 12 namespace compiler {
13 13
14 // Replaces redundant phis if all the inputs are the same or the phi itself. 14 // Replaces redundant phis if all the inputs are the same or the phi itself.
15 class PhiReducer V8_FINAL : public Reducer { 15 class PhiReducer FINAL : public Reducer {
16 public: 16 public:
17 virtual Reduction Reduce(Node* node) V8_OVERRIDE { 17 virtual Reduction Reduce(Node* node) OVERRIDE {
18 if (node->opcode() != IrOpcode::kPhi && 18 if (node->opcode() != IrOpcode::kPhi &&
19 node->opcode() != IrOpcode::kEffectPhi) 19 node->opcode() != IrOpcode::kEffectPhi)
20 return NoChange(); 20 return NoChange();
21 21
22 int n = node->op()->InputCount(); 22 int n = node->op()->InputCount();
23 if (n == 1) return Replace(node->InputAt(0)); 23 if (n == 1) return Replace(node->InputAt(0));
24 24
25 Node* replacement = NULL; 25 Node* replacement = NULL;
26 Node::Inputs inputs = node->inputs(); 26 Node::Inputs inputs = node->inputs();
27 for (InputIter it = inputs.begin(); n > 0; --n, ++it) { 27 for (InputIter it = inputs.begin(); n > 0; --n, ++it) {
28 Node* input = *it; 28 Node* input = *it;
29 if (input != node && input != replacement) { 29 if (input != node && input != replacement) {
30 if (replacement != NULL) return NoChange(); 30 if (replacement != NULL) return NoChange();
31 replacement = input; 31 replacement = input;
32 } 32 }
33 } 33 }
34 DCHECK_NE(node, replacement); 34 DCHECK_NE(node, replacement);
35 return Replace(replacement); 35 return Replace(replacement);
36 } 36 }
37 }; 37 };
38 } 38 }
39 } 39 }
40 } // namespace v8::internal::compiler 40 } // namespace v8::internal::compiler
41 41
42 #endif // V8_COMPILER_PHI_REDUCER_H_ 42 #endif // V8_COMPILER_PHI_REDUCER_H_
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