57 lines
1.6 KiB
C++
57 lines
1.6 KiB
C++
// Copyright (c) 2017 The Khronos Group Inc.
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// Copyright (c) 2017 Valve Corporation
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// Copyright (c) 2017 LunarG Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "source/opt/pass.h"
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#include "source/opt/iterator.h"
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namespace spvtools {
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namespace opt {
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namespace {
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const uint32_t kTypePointerTypeIdInIdx = 1;
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} // namespace
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Pass::Pass() : consumer_(nullptr), context_(nullptr), already_run_(false) {}
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Pass::Status Pass::Run(IRContext* ctx) {
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if (already_run_) {
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return Status::Failure;
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}
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already_run_ = true;
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context_ = ctx;
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Pass::Status status = Process();
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context_ = nullptr;
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if (status == Status::SuccessWithChange) {
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ctx->InvalidateAnalysesExceptFor(GetPreservedAnalyses());
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}
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assert(ctx->IsConsistent());
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return status;
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}
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uint32_t Pass::GetPointeeTypeId(const Instruction* ptrInst) const {
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const uint32_t ptrTypeId = ptrInst->type_id();
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const Instruction* ptrTypeInst = get_def_use_mgr()->GetDef(ptrTypeId);
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return ptrTypeInst->GetSingleWordInOperand(kTypePointerTypeIdInIdx);
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}
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} // namespace opt
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} // namespace spvtools
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