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| 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_CHANGE_LOWERING_H_ |
| 6 #define V8_COMPILER_CHANGE_LOWERING_H_ |
| 7 |
| 8 #include "include/v8.h" |
| 9 #include "src/compiler/common-operator.h" |
| 10 #include "src/compiler/graph-reducer.h" |
| 11 #include "src/compiler/machine-operator.h" |
| 12 |
| 13 namespace v8 { |
| 14 namespace internal { |
| 15 namespace compiler { |
| 16 |
| 17 // Forward declarations. |
| 18 class CommonNodeCache; |
| 19 class Linkage; |
| 20 |
| 21 class ChangeLoweringBase : public Reducer { |
| 22 public: |
| 23 ChangeLoweringBase(Graph* graph, Linkage* linkage, CommonNodeCache* cache); |
| 24 virtual ~ChangeLoweringBase(); |
| 25 |
| 26 protected: |
| 27 Node* ExternalConstant(ExternalReference reference); |
| 28 Node* HeapConstant(PrintableUnique<HeapObject> value); |
| 29 Node* ImmovableHeapConstant(Handle<HeapObject> value); |
| 30 Node* Int32Constant(int32_t value); |
| 31 Node* NumberConstant(double value); |
| 32 Node* CEntryStubConstant(); |
| 33 Node* TrueConstant(); |
| 34 Node* FalseConstant(); |
| 35 |
| 36 Reduction ChangeBitToBool(Node* val, Node* control); |
| 37 |
| 38 Graph* graph() const { return graph_; } |
| 39 Isolate* isolate() const { return isolate_; } |
| 40 Linkage* linkage() const { return linkage_; } |
| 41 CommonNodeCache* cache() const { return cache_; } |
| 42 CommonOperatorBuilder* common() { return &common_; } |
| 43 MachineOperatorBuilder* machine() { return &machine_; } |
| 44 |
| 45 private: |
| 46 Graph* graph_; |
| 47 Isolate* isolate_; |
| 48 Linkage* linkage_; |
| 49 CommonNodeCache* cache_; |
| 50 CommonOperatorBuilder common_; |
| 51 MachineOperatorBuilder machine_; |
| 52 |
| 53 SetOncePointer<Node> c_entry_stub_constant_; |
| 54 SetOncePointer<Node> true_constant_; |
| 55 SetOncePointer<Node> false_constant_; |
| 56 }; |
| 57 |
| 58 |
| 59 template <size_t kPointerSize = kApiPointerSize> |
| 60 class ChangeLowering V8_FINAL : public ChangeLoweringBase { |
| 61 public: |
| 62 ChangeLowering(Graph* graph, Linkage* linkage); |
| 63 ChangeLowering(Graph* graph, Linkage* linkage, CommonNodeCache* cache) |
| 64 : ChangeLoweringBase(graph, linkage, cache) {} |
| 65 virtual ~ChangeLowering() {} |
| 66 |
| 67 virtual Reduction Reduce(Node* node) V8_OVERRIDE; |
| 68 |
| 69 private: |
| 70 Reduction ChangeBoolToBit(Node* val); |
| 71 Reduction ChangeInt32ToTagged(Node* val, Node* effect, Node* control); |
| 72 Reduction ChangeTaggedToFloat64(Node* val, Node* effect, Node* control); |
| 73 }; |
| 74 |
| 75 } // namespace compiler |
| 76 } // namespace internal |
| 77 } // namespace v8 |
| 78 |
| 79 #endif // V8_COMPILER_CHANGE_LOWERING_H_ |
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