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 
11 namespace v8 {
12 namespace internal {
13 namespace compiler {
14 
15 // Forward declarations.
16 class CommonOperatorBuilder;
17 class JSGraph;
18 
19 
20 // Performs constant folding and strength reduction on nodes that have
21 // machine operators.
22 class 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 
ReplaceBool(bool value)35   Reduction ReplaceBool(bool value) { return ReplaceInt32(value ? 1 : 0); }
ReplaceFloat32(volatile float value)36   Reduction ReplaceFloat32(volatile float value) {
37     return Replace(Float32Constant(value));
38   }
ReplaceFloat64(volatile double value)39   Reduction ReplaceFloat64(volatile double value) {
40     return Replace(Float64Constant(value));
41   }
ReplaceInt32(int32_t value)42   Reduction ReplaceInt32(int32_t value) {
43     return Replace(Int32Constant(value));
44   }
ReplaceInt64(int64_t value)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;
jsgraph()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