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      1 /*
      2  * Copyright (C) 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef ART_COMPILER_OPTIMIZING_OPTIMIZATION_H_
     18 #define ART_COMPILER_OPTIMIZING_OPTIMIZATION_H_
     19 
     20 #include "base/arena_object.h"
     21 #include "nodes.h"
     22 #include "optimizing_compiler_stats.h"
     23 
     24 namespace art {
     25 
     26 /**
     27  * Abstraction to implement an optimization pass.
     28  */
     29 class HOptimization : public ArenaObject<kArenaAllocOptimization> {
     30  public:
     31   HOptimization(HGraph* graph,
     32                 const char* pass_name,
     33                 OptimizingCompilerStats* stats = nullptr)
     34       : graph_(graph),
     35         stats_(stats),
     36         pass_name_(pass_name) {}
     37 
     38   virtual ~HOptimization() {}
     39 
     40   // Return the name of the pass.
     41   const char* GetPassName() const { return pass_name_; }
     42 
     43   // Perform the analysis itself.
     44   virtual void Run() = 0;
     45 
     46  protected:
     47   void MaybeRecordStat(MethodCompilationStat compilation_stat, size_t count = 1) const;
     48 
     49   HGraph* const graph_;
     50   // Used to record stats about the optimization.
     51   OptimizingCompilerStats* const stats_;
     52 
     53  private:
     54   // Optimization pass name.
     55   const char* pass_name_;
     56 
     57   DISALLOW_COPY_AND_ASSIGN(HOptimization);
     58 };
     59 
     60 }  // namespace art
     61 
     62 #endif  // ART_COMPILER_OPTIMIZING_OPTIMIZATION_H_
     63