mirror of
https://github.com/KhronosGroup/SPIRV-Tools
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69 lines
2.5 KiB
C++
69 lines
2.5 KiB
C++
// Copyright (c) 2020 Vasyl Teliman
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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/fuzz/fuzzer_pass_propagate_instructions_down.h"
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#include "source/fuzz/fuzzer_context.h"
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#include "source/fuzz/transformation_propagate_instruction_down.h"
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namespace spvtools {
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namespace fuzz {
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FuzzerPassPropagateInstructionsDown::FuzzerPassPropagateInstructionsDown(
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opt::IRContext* ir_context, TransformationContext* transformation_context,
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FuzzerContext* fuzzer_context,
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protobufs::TransformationSequence* transformations)
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: FuzzerPass(ir_context, transformation_context, fuzzer_context,
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transformations) {}
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FuzzerPassPropagateInstructionsDown::~FuzzerPassPropagateInstructionsDown() =
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default;
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void FuzzerPassPropagateInstructionsDown::Apply() {
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for (const auto& function : *GetIRContext()->module()) {
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std::vector<const opt::BasicBlock*> reachable_blocks;
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for (const auto& block : function) {
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if (GetIRContext()->GetDominatorAnalysis(&function)->IsReachable(
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&block)) {
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reachable_blocks.push_back(&block);
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}
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}
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for (const auto* block : reachable_blocks) {
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if (!GetFuzzerContext()->ChoosePercentage(
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GetFuzzerContext()->GetChanceOfPropagatingInstructionsDown())) {
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continue;
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}
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if (TransformationPropagateInstructionDown::IsApplicableToBlock(
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GetIRContext(), block->id())) {
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// Record fresh ids for every successor of the |block| that we can
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// propagate an instruction into.
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std::map<uint32_t, uint32_t> fresh_ids;
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for (auto id :
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TransformationPropagateInstructionDown::GetAcceptableSuccessors(
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GetIRContext(), block->id())) {
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fresh_ids[id] = GetFuzzerContext()->GetFreshId();
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}
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ApplyTransformation(TransformationPropagateInstructionDown(
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block->id(), GetFuzzerContext()->GetFreshId(), fresh_ids));
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}
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}
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}
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}
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} // namespace fuzz
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} // namespace spvtools
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