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_PREPARE_FOR_REGISTER_ALLOCATION_H_ 18 #define ART_COMPILER_OPTIMIZING_PREPARE_FOR_REGISTER_ALLOCATION_H_ 19 20 #include "base/macros.h" 21 #include "optimization.h" 22 23 namespace art HIDDEN { 24 25 class CompilerOptions; 26 class OptimizingCompilerStats; 27 28 /** 29 * A simplification pass over the graph before doing register allocation. 30 * For example it changes uses of null checks and bounds checks to the original 31 * objects, to avoid creating a live range for these checks. 32 */ 33 class PrepareForRegisterAllocation final : public HOptimization { 34 public: 35 PrepareForRegisterAllocation(HGraph* graph, 36 const CompilerOptions& compiler_options, 37 OptimizingCompilerStats* stats = nullptr) HOptimization(graph,kPrepareForRegisterAllocationPassName,stats)38 : HOptimization(graph, kPrepareForRegisterAllocationPassName, stats), 39 compiler_options_(compiler_options) {} 40 41 bool Run() override; 42 43 static constexpr const char* kPrepareForRegisterAllocationPassName = 44 "prepare_for_register_allocation"; 45 46 private: 47 const CompilerOptions& compiler_options_; 48 49 DISALLOW_COPY_AND_ASSIGN(PrepareForRegisterAllocation); 50 }; 51 52 } // namespace art 53 54 #endif // ART_COMPILER_OPTIMIZING_PREPARE_FOR_REGISTER_ALLOCATION_H_ 55