1 // Copyright (c) 2017 The Khronos Group Inc. 2 // Copyright (c) 2017 Valve Corporation 3 // Copyright (c) 2017 LunarG Inc. 4 // 5 // Licensed under the Apache License, Version 2.0 (the "License"); 6 // you may not use this file except in compliance with the License. 7 // You may obtain a copy of the License at 8 // 9 // http://www.apache.org/licenses/LICENSE-2.0 10 // 11 // Unless required by applicable law or agreed to in writing, software 12 // distributed under the License is distributed on an "AS IS" BASIS, 13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 // See the License for the specific language governing permissions and 15 // limitations under the License. 16 17 #include "source/opt/pass.h" 18 19 #include "source/opt/iterator.h" 20 21 namespace spvtools { 22 namespace opt { 23 24 namespace { 25 26 const uint32_t kTypePointerTypeIdInIdx = 1; 27 28 } // namespace 29 Pass()30Pass::Pass() : consumer_(nullptr), context_(nullptr), already_run_(false) {} 31 Run(IRContext * ctx)32Pass::Status Pass::Run(IRContext* ctx) { 33 if (already_run_) { 34 return Status::Failure; 35 } 36 already_run_ = true; 37 38 context_ = ctx; 39 Pass::Status status = Process(); 40 context_ = nullptr; 41 42 if (status == Status::SuccessWithChange) { 43 ctx->InvalidateAnalysesExceptFor(GetPreservedAnalyses()); 44 } 45 assert(ctx->IsConsistent()); 46 return status; 47 } 48 GetPointeeTypeId(const Instruction * ptrInst) const49uint32_t Pass::GetPointeeTypeId(const Instruction* ptrInst) const { 50 const uint32_t ptrTypeId = ptrInst->type_id(); 51 const Instruction* ptrTypeInst = get_def_use_mgr()->GetDef(ptrTypeId); 52 return ptrTypeInst->GetSingleWordInOperand(kTypePointerTypeIdInIdx); 53 } 54 55 } // namespace opt 56 } // namespace spvtools 57