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 #include "source/reduce/remove_function_reduction_opportunity_finder.h" 16 17 #include "source/reduce/remove_function_reduction_opportunity.h" 18 19 namespace spvtools { 20 namespace reduce { 21 22 std::vector<std::unique_ptr<ReductionOpportunity>> GetAvailableOpportunities(opt::IRContext * context,uint32_t target_function) const23RemoveFunctionReductionOpportunityFinder::GetAvailableOpportunities( 24 opt::IRContext* context, uint32_t target_function) const { 25 if (target_function) { 26 // If we are targeting a specific function then we are only interested in 27 // opportunities that simplify the internals of that function; removing 28 // whole functions does not fit the bill. 29 return {}; 30 } 31 32 std::vector<std::unique_ptr<ReductionOpportunity>> result; 33 // Consider each function. 34 for (auto& function : *context->module()) { 35 if (context->get_def_use_mgr()->NumUses(function.result_id()) > 0) { 36 // If the function is referenced, ignore it. 37 continue; 38 } 39 result.push_back( 40 MakeUnique<RemoveFunctionReductionOpportunity>(context, &function)); 41 } 42 return result; 43 } 44 GetName() const45std::string RemoveFunctionReductionOpportunityFinder::GetName() const { 46 return "RemoveFunctionReductionOpportunityFinder"; 47 } 48 49 } // namespace reduce 50 } // namespace spvtools 51