mirror of
https://github.com/KhronosGroup/SPIRV-Tools
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82 lines
3.3 KiB
C++
82 lines
3.3 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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#ifndef SOURCE_FUZZ_FACT_MANAGER_IRRELEVANT_VALUE_FACTS_H_
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#define SOURCE_FUZZ_FACT_MANAGER_IRRELEVANT_VALUE_FACTS_H_
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#include <unordered_set>
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#include "source/fuzz/protobufs/spirvfuzz_protobufs.h"
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#include "source/opt/ir_context.h"
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namespace spvtools {
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namespace fuzz {
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namespace fact_manager {
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// Forward reference to the DataSynonymAndIdEquationFacts class.
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class DataSynonymAndIdEquationFacts;
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// Forward reference to the DeadBlockFacts class.
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class DeadBlockFacts;
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// The purpose of this class is to group the fields and data used to represent
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// facts about various irrelevant values in the module.
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class IrrelevantValueFacts {
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public:
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explicit IrrelevantValueFacts(opt::IRContext* ir_context);
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// See method in FactManager which delegates to this method. Returns true if
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// |fact.pointer_id()| is a result id of pointer type in the |ir_context_| and
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// |fact.pointer_id()| does not participate in DataSynonym facts. Returns
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// false otherwise. |data_synonym_and_id_equation_facts| and |context| are
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// passed for consistency checks.
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bool MaybeAddFact(
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const protobufs::FactPointeeValueIsIrrelevant& fact,
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const DataSynonymAndIdEquationFacts& data_synonym_and_id_equation_facts);
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// See method in FactManager which delegates to this method. Returns true if
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// |fact.result_id()| is a result id of non-pointer type in the |ir_context_|
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// and |fact.result_id()| does not participate in DataSynonym facts. Returns
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// false otherwise. |data_synonym_and_id_equation_facts| and |context| are
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// passed for consistency checks.
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bool MaybeAddFact(
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const protobufs::FactIdIsIrrelevant& fact,
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const DataSynonymAndIdEquationFacts& data_synonym_and_id_equation_facts);
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// See method in FactManager which delegates to this method.
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bool PointeeValueIsIrrelevant(uint32_t pointer_id) const;
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// See method in FactManager which delegates to this method.
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// |dead_block_facts| and |context| are passed to check whether |result_id| is
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// declared inside a dead block, in which case it is irrelevant.
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bool IdIsIrrelevant(uint32_t result_id,
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const DeadBlockFacts& dead_block_facts) const;
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// See method in FactManager which delegates to this method.
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// |dead_block_facts| and |context| are passed to also add all the ids
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// declared in dead blocks to the set of irrelevant ids.
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std::unordered_set<uint32_t> GetIrrelevantIds(
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const DeadBlockFacts& dead_block_facts) const;
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private:
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std::unordered_set<uint32_t> pointers_to_irrelevant_pointees_ids_;
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std::unordered_set<uint32_t> irrelevant_ids_;
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opt::IRContext* ir_context_;
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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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#endif // SOURCE_FUZZ_FACT_MANAGER_IRRELEVANT_VALUE_FACTS_H_
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