| // Copyright 2011 the V8 project authors. All rights reserved. |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following |
| // disclaimer in the documentation and/or other materials provided |
| // with the distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #ifndef V8_LITHIUM_H_ |
| #define V8_LITHIUM_H_ |
| |
| #include "lithium-allocator.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| class LGapNode; |
| |
| class LGapResolver BASE_EMBEDDED { |
| public: |
| LGapResolver(const ZoneList<LMoveOperands>* moves, LOperand* marker_operand); |
| const ZoneList<LMoveOperands>* ResolveInReverseOrder(); |
| |
| private: |
| LGapNode* LookupNode(LOperand* operand); |
| bool CanReach(LGapNode* a, LGapNode* b, int visited_id); |
| bool CanReach(LGapNode* a, LGapNode* b); |
| void RegisterMove(LMoveOperands move); |
| void AddResultMove(LOperand* from, LOperand* to); |
| void AddResultMove(LGapNode* from, LGapNode* to); |
| void ResolveCycle(LGapNode* start); |
| |
| ZoneList<LGapNode*> nodes_; |
| ZoneList<LGapNode*> identified_cycles_; |
| ZoneList<LMoveOperands> result_; |
| LOperand* marker_operand_; |
| int next_visited_id_; |
| int bailout_after_ast_id_; |
| }; |
| |
| |
| } } // namespace v8::internal |
| |
| #endif // V8_LITHIUM_H_ |