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https://github.com/KhronosGroup/SPIRV-Tools
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80 lines
3.1 KiB
C
80 lines
3.1 KiB
C
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// 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_FUZZER_PASS_CONSTRUCT_COMPOSITES_H_
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#define SOURCE_FUZZ_FUZZER_PASS_CONSTRUCT_COMPOSITES_H_
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#include "source/fuzz/fuzzer_pass.h"
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#include <map>
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#include <vector>
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namespace spvtools {
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namespace fuzz {
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// A fuzzer pass for constructing composite objects from smaller objects.
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class FuzzerPassConstructComposites : public FuzzerPass {
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public:
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FuzzerPassConstructComposites(
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opt::IRContext* ir_context, FactManager* fact_manager,
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FuzzerContext* fuzzer_context,
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protobufs::TransformationSequence* transformations);
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~FuzzerPassConstructComposites();
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void Apply() override;
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private:
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// Used to map a type id to relevant instructions whose result type matches
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// the type id.
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typedef std::map<uint32_t, std::vector<opt::Instruction*>>
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TypeIdToInstructions;
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// Considers all instructions that are available at |inst| - instructions
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// whose results could be packed into a composite - and updates
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// |type_id_to_available_instructions| so that each such instruction is
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// associated with its the id of its result type.
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void RecordAvailableInstruction(
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opt::Instruction* inst,
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TypeIdToInstructions* type_id_to_available_instructions);
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// Attempts to find suitable instruction result ids from the values of
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// |type_id_to_available_instructions| that would allow a composite of type
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// |array_type| to be constructed. Returns said ids if they can be found.
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// Returns |nullptr| otherwise.
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std::unique_ptr<std::vector<uint32_t>> TryConstructingArrayComposite(
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const opt::analysis::Array& array_type,
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const TypeIdToInstructions& type_id_to_available_instructions);
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// Similar to TryConstructingArrayComposite, but for matrices.
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std::unique_ptr<std::vector<uint32_t>> TryConstructingMatrixComposite(
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const opt::analysis::Matrix& matrix_type,
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const TypeIdToInstructions& type_id_to_available_instructions);
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// Similar to TryConstructingArrayComposite, but for structs.
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std::unique_ptr<std::vector<uint32_t>> TryConstructingStructComposite(
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const opt::analysis::Struct& struct_type,
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const TypeIdToInstructions& type_id_to_available_instructions);
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// Similar to TryConstructingArrayComposite, but for vectors.
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std::unique_ptr<std::vector<uint32_t>> TryConstructingVectorComposite(
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const opt::analysis::Vector& vector_type,
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const TypeIdToInstructions& type_id_to_available_instructions);
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};
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} // namespace fuzz
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} // namespace spvtools
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#endif // SOURCE_FUZZ_FUZZER_PASS_CONSTRUCT_COMPOSITES_H_
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