1 // Copyright (c) 2019 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 SOURCE_REDUCE_REDUCTION_OPPORTUNITY_FINDER_H_ 16 #define SOURCE_REDUCE_REDUCTION_OPPORTUNITY_FINDER_H_ 17 18 #include <vector> 19 20 #include "source/opt/ir_context.h" 21 #include "source/reduce/reduction_opportunity.h" 22 23 namespace spvtools { 24 namespace reduce { 25 26 // Abstract class for finding opportunities for reducing a SPIR-V module. 27 class ReductionOpportunityFinder { 28 public: 29 ReductionOpportunityFinder() = default; 30 31 virtual ~ReductionOpportunityFinder() = default; 32 33 // Finds and returns the reduction opportunities relevant to this pass that 34 // could be applied to SPIR-V module |context|. 35 // 36 // If |target_function| is non-zero then the available opportunities will be 37 // restricted to only those opportunities that modify the function with result 38 // id |target_function|. 39 virtual std::vector<std::unique_ptr<ReductionOpportunity>> 40 GetAvailableOpportunities(opt::IRContext* context, 41 uint32_t target_function) const = 0; 42 43 // Provides a name for the finder. 44 virtual std::string GetName() const = 0; 45 46 protected: 47 // Requires that |target_function| is zero or the id of a function in 48 // |ir_context|. If |target_function| is zero, returns all the functions in 49 // |ir_context|. Otherwise, returns the function with id |target_function|. 50 // This allows fuzzer passes to restrict attention to a single function. 51 static std::vector<opt::Function*> GetTargetFunctions( 52 opt::IRContext* ir_context, uint32_t target_function); 53 }; 54 55 } // namespace reduce 56 } // namespace spvtools 57 58 #endif // SOURCE_REDUCE_REDUCTION_OPPORTUNITY_FINDER_H_ 59