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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_COMPILER_NODE_H_ | 5 #ifndef V8_COMPILER_NODE_H_ |
6 #define V8_COMPILER_NODE_H_ | 6 #define V8_COMPILER_NODE_H_ |
7 | 7 |
8 #include "src/compiler/opcodes.h" | 8 #include "src/compiler/opcodes.h" |
9 #include "src/compiler/operator.h" | 9 #include "src/compiler/operator.h" |
10 #include "src/types-inl.h" | 10 #include "src/types-inl.h" |
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139 Node* node_; | 139 Node* node_; |
140 }; | 140 }; |
141 | 141 |
142 Uses uses() { return Uses(this); } | 142 Uses uses() { return Uses(this); } |
143 | 143 |
144 // Returns true if {owner} is the user of {this} node. | 144 // Returns true if {owner} is the user of {this} node. |
145 bool OwnedBy(Node* owner) const { | 145 bool OwnedBy(Node* owner) const { |
146 return first_use_ && first_use_->from == owner && !first_use_->next; | 146 return first_use_ && first_use_->from == owner && !first_use_->next; |
147 } | 147 } |
148 | 148 |
| 149 // Returns true if {owner1} and {owner2} are the only users of {this} node. |
| 150 bool OwnedBy(Node const* owner1, Node const* owner2) const; |
| 151 |
149 private: | 152 private: |
150 struct Use final : public ZoneObject { | 153 struct Use final : public ZoneObject { |
151 Node* from; | 154 Node* from; |
152 Use* next; | 155 Use* next; |
153 Use* prev; | 156 Use* prev; |
154 int input_index; | 157 int input_index; |
155 }; | 158 }; |
156 | 159 |
157 class Input final { | 160 class Input final { |
158 public: | 161 public: |
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476 | 479 |
477 void Node::ReplaceInput(int index, Node* new_to) { | 480 void Node::ReplaceInput(int index, Node* new_to) { |
478 GetInputRecordPtr(index)->Update(new_to); | 481 GetInputRecordPtr(index)->Update(new_to); |
479 } | 482 } |
480 | 483 |
481 } // namespace compiler | 484 } // namespace compiler |
482 } // namespace internal | 485 } // namespace internal |
483 } // namespace v8 | 486 } // namespace v8 |
484 | 487 |
485 #endif // V8_COMPILER_NODE_H_ | 488 #endif // V8_COMPILER_NODE_H_ |
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