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_MACHINE_OPERATOR_REDUCER_H_
6#define V8_COMPILER_MACHINE_OPERATOR_REDUCER_H_
7
8#include "src/compiler/graph-reducer.h"
9#include "src/compiler/machine-operator.h"
10
11namespace v8 {
12namespace internal {
13namespace compiler {
14
15// Forward declarations.
16class CommonOperatorBuilder;
17class JSGraph;
18
19
20// Performs constant folding and strength reduction on nodes that have
21// machine operators.
22class MachineOperatorReducer FINAL : public Reducer {
23 public:
24  explicit MachineOperatorReducer(JSGraph* jsgraph);
25  ~MachineOperatorReducer();
26
27  virtual Reduction Reduce(Node* node) OVERRIDE;
28
29 private:
30  Node* Float32Constant(volatile float value);
31  Node* Float64Constant(volatile double value);
32  Node* Int32Constant(int32_t value);
33  Node* Int64Constant(int64_t value);
34
35  Reduction ReplaceBool(bool value) { return ReplaceInt32(value ? 1 : 0); }
36  Reduction ReplaceFloat32(volatile float value) {
37    return Replace(Float32Constant(value));
38  }
39  Reduction ReplaceFloat64(volatile double value) {
40    return Replace(Float64Constant(value));
41  }
42  Reduction ReplaceInt32(int32_t value) {
43    return Replace(Int32Constant(value));
44  }
45  Reduction ReplaceInt64(int64_t value) {
46    return Replace(Int64Constant(value));
47  }
48
49  Reduction ReduceProjection(size_t index, Node* node);
50
51  Graph* graph() const;
52  JSGraph* jsgraph() const { return jsgraph_; }
53  CommonOperatorBuilder* common() const;
54  MachineOperatorBuilder* machine() const;
55
56  JSGraph* jsgraph_;
57};
58
59}  // namespace compiler
60}  // namespace internal
61}  // namespace v8
62
63#endif  // V8_COMPILER_MACHINE_OPERATOR_REDUCER_H_
64