| // Copyright 2014 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef V8_COMPILER_SIMPLIFIED_LOWERING_H_ |
| #define V8_COMPILER_SIMPLIFIED_LOWERING_H_ |
| |
| #include "src/compiler/graph-reducer.h" |
| #include "src/compiler/js-graph.h" |
| #include "src/compiler/lowering-builder.h" |
| #include "src/compiler/machine-operator.h" |
| #include "src/compiler/node.h" |
| #include "src/compiler/simplified-operator.h" |
| |
| namespace v8 { |
| namespace internal { |
| namespace compiler { |
| |
| class SimplifiedLowering : public LoweringBuilder { |
| public: |
| explicit SimplifiedLowering(JSGraph* jsgraph, |
| SourcePositionTable* source_positions) |
| : LoweringBuilder(jsgraph->graph(), source_positions), |
| jsgraph_(jsgraph), |
| machine_(jsgraph->zone()) {} |
| virtual ~SimplifiedLowering() {} |
| |
| void LowerAllNodes(); |
| |
| virtual void Lower(Node* node); |
| void LowerChange(Node* node, Node* effect, Node* control); |
| |
| // TODO(titzer): These are exposed for direct testing. Use a friend class. |
| void DoLoadField(Node* node); |
| void DoStoreField(Node* node); |
| void DoLoadElement(Node* node); |
| void DoStoreElement(Node* node); |
| |
| private: |
| JSGraph* jsgraph_; |
| MachineOperatorBuilder machine_; |
| |
| Node* SmiTag(Node* node); |
| Node* IsTagged(Node* node); |
| Node* Untag(Node* node); |
| Node* OffsetMinusTagConstant(int32_t offset); |
| Node* ComputeIndex(const ElementAccess& access, Node* index); |
| |
| void DoChangeTaggedToUI32(Node* node, Node* effect, Node* control, |
| bool is_signed); |
| void DoChangeUI32ToTagged(Node* node, Node* effect, Node* control, |
| bool is_signed); |
| void DoChangeTaggedToFloat64(Node* node, Node* effect, Node* control); |
| void DoChangeFloat64ToTagged(Node* node, Node* effect, Node* control); |
| void DoChangeBoolToBit(Node* node, Node* effect, Node* control); |
| void DoChangeBitToBool(Node* node, Node* effect, Node* control); |
| |
| friend class RepresentationSelector; |
| |
| Zone* zone() { return jsgraph_->zone(); } |
| JSGraph* jsgraph() { return jsgraph_; } |
| Graph* graph() { return jsgraph()->graph(); } |
| CommonOperatorBuilder* common() { return jsgraph()->common(); } |
| MachineOperatorBuilder* machine() { return &machine_; } |
| }; |
| |
| } // namespace compiler |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif // V8_COMPILER_SIMPLIFIED_LOWERING_H_ |