1 // Copyright (c) 2024 Google LLC 2 // 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 #ifndef LIBSPIRV_OPT_MODIFY_MAXIMAL_RECONVERGENCE_H_ 16 #define LIBSPIRV_OPT_MODIFY_MAXIMAL_RECONVERGENCE_H_ 17 18 #include "pass.h" 19 20 namespace spvtools { 21 namespace opt { 22 23 // Modifies entry points to either add or remove MaximallyReconvergesKHR 24 // 25 // This pass will either add or remove MaximallyReconvergesKHR to all entry 26 // points in the module. When adding the execution mode, it does not attempt to 27 // determine whether any ray tracing invocation repack instructions might be 28 // executed because it is a runtime restriction. That is left to the user. 29 class ModifyMaximalReconvergence : public Pass { 30 public: name()31 const char* name() const override { return "modify-maximal-reconvergence"; } 32 Status Process() override; 33 Pass()34 explicit ModifyMaximalReconvergence(bool add = true) : Pass(), add_(add) {} 35 GetPreservedAnalyses()36 IRContext::Analysis GetPreservedAnalyses() override { 37 return IRContext::kAnalysisDefUse | 38 IRContext::kAnalysisInstrToBlockMapping | 39 IRContext::kAnalysisDecorations | IRContext::kAnalysisCombinators | 40 IRContext::kAnalysisCFG | IRContext::kAnalysisNameMap | 41 IRContext::kAnalysisConstants | IRContext::kAnalysisTypes; 42 } 43 44 private: 45 bool AddMaximalReconvergence(); 46 bool RemoveMaximalReconvergence(); 47 48 bool add_; 49 }; 50 } // namespace opt 51 } // namespace spvtools 52 53 #endif // LIBSPIRV_OPT_MODIFY_MAXIMAL_RECONVERGENCE_H_ 54