constant_folding.h revision 69ba7b7112c2277ac225615b37e6df74c055740d
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_CONSTANT_FOLDING_H_ 18#define ART_COMPILER_OPTIMIZING_CONSTANT_FOLDING_H_ 19 20#include "nodes.h" 21#include "optimization.h" 22 23namespace art { 24 25/** 26 * Optimization pass performing a simple constant-expression 27 * evaluation on the SSA form. 28 * 29 * This class is named art::HConstantFolding to avoid name 30 * clashes with the art::ConstantPropagation class defined in 31 * compiler/dex/post_opt_passes.h. 32 */ 33class HConstantFolding : public HOptimization { 34 public: 35 explicit HConstantFolding(HGraph* graph, const char* name = kConstantFoldingPassName) 36 : HOptimization(graph, name) {} 37 38 void Run() OVERRIDE; 39 40 static constexpr const char* kConstantFoldingPassName = "constant_folding"; 41 42 private: 43 DISALLOW_COPY_AND_ASSIGN(HConstantFolding); 44}; 45 46} // namespace art 47 48#endif // ART_COMPILER_OPTIMIZING_CONSTANT_FOLDING_H_ 49