mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-12-27 10:20:14 +00:00
c0833ce620
Subclasses of FuzzerPass no longer needlessly override the default destructor of FuzzerPass.
72 lines
3.0 KiB
C++
72 lines
3.0 KiB
C++
// Copyright (c) 2020 Google LLC
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#ifndef SOURCE_FUZZ_FUZZER_PASS_ADD_OPPHI_SYNONYMS_H_
|
|
#define SOURCE_FUZZ_FUZZER_PASS_ADD_OPPHI_SYNONYMS_H_
|
|
|
|
#include "source/fuzz/fuzzer_pass.h"
|
|
|
|
namespace spvtools {
|
|
namespace fuzz {
|
|
|
|
// A fuzzer pass to add OpPhi instructions which can take the values of ids that
|
|
// have been marked as synonymous. This instruction will itself be marked as
|
|
// synonymous with the others.
|
|
class FuzzerPassAddOpPhiSynonyms : public FuzzerPass {
|
|
public:
|
|
FuzzerPassAddOpPhiSynonyms(
|
|
opt::IRContext* ir_context, TransformationContext* transformation_context,
|
|
FuzzerContext* fuzzer_context,
|
|
protobufs::TransformationSequence* transformations);
|
|
|
|
void Apply() override;
|
|
|
|
// Computes the equivalence classes for the non-pointer and non-irrelevant ids
|
|
// in the module, where two ids are considered equivalent iff they have been
|
|
// declared synonymous and they have the same type.
|
|
std::vector<std::set<uint32_t>> GetIdEquivalenceClasses();
|
|
|
|
// Returns true iff |equivalence_class| contains at least
|
|
// |distinct_ids_required| ids so that all of these ids are available at the
|
|
// end of at least one predecessor of the block with label |block_id|.
|
|
// Assumes that the block has at least one predecessor.
|
|
bool EquivalenceClassIsSuitableForBlock(
|
|
const std::set<uint32_t>& equivalence_class, uint32_t block_id,
|
|
uint32_t distinct_ids_required);
|
|
|
|
// Returns a vector with the ids that are available to use at the end of the
|
|
// block with id |pred_id|, selected among the given |ids|. Assumes that
|
|
// |pred_id| is the label of a block and all ids in |ids| exist in the module.
|
|
std::vector<uint32_t> GetSuitableIds(const std::set<uint32_t>& ids,
|
|
uint32_t pred_id);
|
|
|
|
private:
|
|
// Randomly chooses one of the equivalence classes in |candidates|, so that it
|
|
// satisfies all of the following conditions:
|
|
// - For each of the predecessors of the |block_id| block, there is at least
|
|
// one id in the chosen equivalence class that is available at the end of
|
|
// it.
|
|
// - There are at least |distinct_ids_required| ids available at the end of
|
|
// some predecessor.
|
|
// Returns nullptr if no equivalence class in |candidates| satisfies the
|
|
// requirements.
|
|
std::set<uint32_t>* MaybeFindSuitableEquivalenceClassRandomly(
|
|
const std::vector<std::set<uint32_t>*>& candidates, uint32_t block_id,
|
|
uint32_t distinct_ids_required);
|
|
};
|
|
} // namespace fuzz
|
|
} // namespace spvtools
|
|
|
|
#endif // SOURCE_FUZZ_FUZZER_PASS_ADD_OPPHI_SYNONYMS_H_
|