1 /** 2 * Copyright (c) 2021-2022 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef COMPILER_OPTIMIZER_ANALYSIS_IF_CONVERSION_H_ 17 #define COMPILER_OPTIMIZER_ANALYSIS_IF_CONVERSION_H_ 18 19 #include "optimizer/ir/graph.h" 20 #include "utils/arena_containers.h" 21 22 namespace panda::compiler { 23 class BasicBlock; 24 class Graph; 25 26 class IfConversion : public Optimization { 27 public: Optimization(graph)28 explicit IfConversion(Graph *graph, uint32_t limit = 2) : Optimization(graph), limit_(limit) {} 29 30 NO_MOVE_SEMANTIC(IfConversion); 31 NO_COPY_SEMANTIC(IfConversion); 32 ~IfConversion() override = default; 33 34 bool RunImpl() override; 35 IsEnable()36 bool IsEnable() const override 37 { 38 return options.IsCompilerIfConversion(); 39 } 40 GetPassName()41 const char *GetPassName() const override 42 { 43 return "IfConversion"; 44 } 45 46 void InvalidateAnalyses() override; 47 48 private: 49 uint32_t limit_; 50 bool TryTriangle(BasicBlock *bb); 51 bool TryDiamond(BasicBlock *bb); 52 static bool IsConvertable(BasicBlock *bb, uint32_t *inst_count); 53 static bool IsPhisAllowed(BasicBlock *bb, BasicBlock *pred1, BasicBlock *pred2, uint32_t *phi_count); 54 }; 55 } // namespace panda::compiler 56 57 #endif // COMPILER_OPTIMIZER_ANALYSIS_IF_CONVERSION_H_ 58