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https://github.com/KhronosGroup/SPIRV-Tools
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Some transformations (e.g. TransformationAddFunction) rely on running the validator to decide whether the transformation is applicable. A recent change allowed spirv-fuzz to take validator options, to cater for the case where a module should be considered valid under particular conditions. However, validation during the checking of transformations had no access to these validator options. This change introduced TransformationContext, which currently consists of a fact manager and a set of validator options, but could in the future have other fields corresponding to other objects that it is useful to have access to when applying transformations. Now, instead of checking and applying transformations in the context of a FactManager, a TransformationContext is used. This gives access to the fact manager as before, and also access to the validator options when they are needed.
80 lines
3.1 KiB
C++
80 lines
3.1 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_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, TransformationContext* transformation_context,
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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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