| // Copyright (c) 2019 Google LLC. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #ifndef SOURCE_OPT_LEGALIZE_VECTOR_SHUFFLE_PASS_H_ |
| #define SOURCE_OPT_LEGALIZE_VECTOR_SHUFFLE_PASS_H_ |
| |
| #include "source/opt/ir_context.h" |
| #include "source/opt/module.h" |
| #include "source/opt/pass.h" |
| |
| namespace spvtools { |
| namespace opt { |
| |
| // Converts any usages of 0xFFFFFFFF for the literals in OpVectorShuffle to a |
| // literal 0. This is needed because using OxFFFFFFFF is forbidden by the WebGPU |
| // spec. 0xFFFFFFFF in the main spec indicates that the result for this |
| // component has no source, thus is undefined. Since this is undefined |
| // behaviour we are free to use 0. |
| class LegalizeVectorShufflePass : public Pass { |
| public: |
| const char* name() const override { return "legalize-vector-shuffle"; } |
| Status Process() override; |
| |
| IRContext::Analysis GetPreservedAnalyses() override { |
| return IRContext::kAnalysisInstrToBlockMapping | |
| IRContext::kAnalysisDecorations | IRContext::kAnalysisCombinators | |
| IRContext::kAnalysisCFG | IRContext::kAnalysisDominatorAnalysis | |
| IRContext::kAnalysisLoopAnalysis | IRContext::kAnalysisNameMap | |
| IRContext::kAnalysisScalarEvolution | |
| IRContext::kAnalysisRegisterPressure | |
| IRContext::kAnalysisValueNumberTable | |
| IRContext::kAnalysisStructuredCFG | |
| IRContext::kAnalysisBuiltinVarId | |
| IRContext::kAnalysisIdToFuncMapping | IRContext::kAnalysisTypes | |
| IRContext::kAnalysisDefUse | IRContext::kAnalysisConstants; |
| } |
| }; |
| |
| } // namespace opt |
| } // namespace spvtools |
| |
| #endif // SOURCE_OPT_LEGALIZE_VECTOR_SHUFFLE_PASS_H_ |