| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /** |
| * @author Intel, Pavel A. Ozhdikhin |
| * |
| */ |
| |
| #ifndef _ESCAPEANALYSIS_H_ |
| #define _ESCAPEANALYSIS_H_ |
| |
| #include "open/types.h" |
| #include "Stl.h" |
| #include "optpass.h" |
| |
| namespace Jitrino { |
| |
| class IRManager; |
| class ControlFlowGraph; |
| class Inst; |
| |
| |
| //DEFINE_OPTPASS(EscapeAnalysisPass) |
| |
| // |
| // Simple escape analyzer |
| // |
| class EscapeAnalyzer { |
| public: |
| EscapeAnalyzer(IRManager& irm) : irManager(irm) {}; |
| // |
| // Performs escape analysis and returns the number of instructions |
| // that do not escape. |
| // |
| U_32 doAnalysis(); |
| U_32 doAggressiveAnalysis(); |
| private: |
| IRManager& irManager; |
| }; |
| |
| // |
| // Def-use chains |
| // |
| class DefUseLink; |
| |
| class DefUseLink { |
| public: |
| Inst* getUseInst() {return useInst;} |
| U_32 getSrcIndex() {return srcIndex;} |
| DefUseLink* getNext() {return next;} |
| private: |
| DefUseLink(Inst* use,U_32 index,DefUseLink* n) |
| : useInst(use), srcIndex(index), next(n) |
| { |
| } |
| Inst* useInst; |
| U_32 srcIndex; |
| DefUseLink* next; |
| friend class DefUseBuilder; |
| }; |
| |
| class DefUseBuilder { |
| public: |
| DefUseBuilder(MemoryManager& mm) : memoryManager(mm), defUseTable(mm) {} |
| |
| void initialize(ControlFlowGraph& fg); |
| |
| DefUseLink* getDefUseLinks(Inst* defInst) { |
| return defUseTable[defInst]; |
| } |
| |
| void addUses(Inst* useInst); |
| void addDefUse(Inst* defInst,Inst* srcInst,U_32 srcIndex); |
| |
| DefUseLink* getDefUse(Inst* defInst,Inst* srcInst,U_32 srcIndex); |
| |
| void removeDef(Inst* defInst); |
| void removeDefUse(Inst* defInst,Inst* srcInst,U_32 srcIndex); |
| private: |
| MemoryManager& memoryManager; |
| StlHashMap<Inst*,DefUseLink*> defUseTable; |
| }; |
| |
| } //namespace Jitrino |
| |
| #endif // _ESCAPEANALYSIS_H_ |