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
3// found in the LICENSE file.
4
5#ifndef V8_COMPILER_COMMON_OPERATOR_REDUCER_H_
6#define V8_COMPILER_COMMON_OPERATOR_REDUCER_H_
7
8#include "src/base/compiler-specific.h"
9#include "src/compiler/graph-reducer.h"
10#include "src/globals.h"
11
12namespace v8 {
13namespace internal {
14namespace compiler {
15
16// Forward declarations.
17class CommonOperatorBuilder;
18class Graph;
19class MachineOperatorBuilder;
20class Operator;
21
22
23// Performs strength reduction on nodes that have common operators.
24class V8_EXPORT_PRIVATE CommonOperatorReducer final
25    : public NON_EXPORTED_BASE(AdvancedReducer) {
26 public:
27  CommonOperatorReducer(Editor* editor, Graph* graph,
28                        CommonOperatorBuilder* common,
29                        MachineOperatorBuilder* machine);
30  ~CommonOperatorReducer() final {}
31
32  Reduction Reduce(Node* node) final;
33
34 private:
35  Reduction ReduceBranch(Node* node);
36  Reduction ReduceDeoptimizeConditional(Node* node);
37  Reduction ReduceMerge(Node* node);
38  Reduction ReduceEffectPhi(Node* node);
39  Reduction ReducePhi(Node* node);
40  Reduction ReduceReturn(Node* node);
41  Reduction ReduceSelect(Node* node);
42
43  Reduction Change(Node* node, Operator const* op, Node* a);
44  Reduction Change(Node* node, Operator const* op, Node* a, Node* b);
45
46  Graph* graph() const { return graph_; }
47  CommonOperatorBuilder* common() const { return common_; }
48  MachineOperatorBuilder* machine() const { return machine_; }
49  Node* dead() const { return dead_; }
50
51  Graph* const graph_;
52  CommonOperatorBuilder* const common_;
53  MachineOperatorBuilder* const machine_;
54  Node* const dead_;
55};
56
57}  // namespace compiler
58}  // namespace internal
59}  // namespace v8
60
61#endif  // V8_COMPILER_COMMON_OPERATOR_REDUCER_H_
62