1 // Copyright 2021 The Tint Authors. 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 SRC_TRANSFORM_REMOVE_PHONIES_H_ 16 #define SRC_TRANSFORM_REMOVE_PHONIES_H_ 17 18 #include <string> 19 #include <unordered_map> 20 21 #include "src/transform/transform.h" 22 23 namespace tint { 24 namespace transform { 25 26 /// RemovePhonies is a Transform that removes all phony-assignment statements, 27 /// while preserving function call expressions in the RHS of the assignment that 28 /// may have side-effects. 29 class RemovePhonies : public Castable<RemovePhonies, Transform> { 30 public: 31 /// Constructor 32 RemovePhonies(); 33 34 /// Destructor 35 ~RemovePhonies() override; 36 37 protected: 38 /// Runs the transform using the CloneContext built for transforming a 39 /// program. Run() is responsible for calling Clone() on the CloneContext. 40 /// @param ctx the CloneContext primed with the input program and 41 /// ProgramBuilder 42 /// @param inputs optional extra transform-specific input data 43 /// @param outputs optional extra transform-specific output data 44 void Run(CloneContext& ctx, const DataMap& inputs, DataMap& outputs) override; 45 }; 46 47 } // namespace transform 48 } // namespace tint 49 50 #endif // SRC_TRANSFORM_REMOVE_PHONIES_H_ 51