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https://github.com/KhronosGroup/SPIRV-Tools
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3daabd3212
A transformation that replaces the use of an irrelevant id with another id of the same type. The related fuzzer pass, for every use of an irrelevant id, checks whether the id can be replaced in that use by another id of the same type and randomly decides whether to replace it. Fixes #3503.
57 lines
1.8 KiB
C++
57 lines
1.8 KiB
C++
// Copyright (c) 2019 Google LLC
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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/fact_manager/irrelevant_value_facts.h"
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#include "source/fuzz/data_descriptor.h"
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#include "source/fuzz/fuzzer_util.h"
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namespace spvtools {
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namespace fuzz {
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namespace fact_manager {
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void IrrelevantValueFacts::AddFact(
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const protobufs::FactPointeeValueIsIrrelevant& fact) {
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// TODO(https://github.com/KhronosGroup/SPIRV-Tools/issues/3550)
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// Assert that the id does not participate in DataSynonym facts and is a
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// pointer.
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pointers_to_irrelevant_pointees_ids_.insert(fact.pointer_id());
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}
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void IrrelevantValueFacts::AddFact(const protobufs::FactIdIsIrrelevant& fact) {
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// TODO(https://github.com/KhronosGroup/SPIRV-Tools/issues/3550)
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// Assert that the id does not participate in DataSynonym facts and is not a
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// pointer.
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irrelevant_ids_.insert(fact.result_id());
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}
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bool IrrelevantValueFacts::PointeeValueIsIrrelevant(uint32_t pointer_id) const {
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return pointers_to_irrelevant_pointees_ids_.count(pointer_id) != 0;
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}
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bool IrrelevantValueFacts::IdIsIrrelevant(uint32_t pointer_id) const {
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return irrelevant_ids_.count(pointer_id) != 0;
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}
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const std::unordered_set<uint32_t>& IrrelevantValueFacts::GetIrrelevantIds()
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const {
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return irrelevant_ids_;
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}
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} // namespace fact_manager
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} // namespace fuzz
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} // namespace spvtools
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