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// Copyright (c) 2019 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_CONSTRUCT_COMPOSITES_H_
#define SOURCE_FUZZ_FUZZER_PASS_CONSTRUCT_COMPOSITES_H_
#include <unordered_map>
#include <vector>
#include "source/fuzz/fuzzer_pass.h"
namespace spvtools {
namespace fuzz {
// A fuzzer pass for constructing composite objects from smaller objects.
class FuzzerPassConstructComposites : public FuzzerPass {
public:
FuzzerPassConstructComposites(
opt::IRContext* ir_context, TransformationContext* transformation_context,
FuzzerContext* fuzzer_context,
protobufs::TransformationSequence* transformations,
bool ignore_inapplicable_transformations);
void Apply() override;
private:
// Used to map a type id to the ids of relevant instructions of the type.
using TypeIdToInstructions =
std::unordered_map<uint32_t, std::vector<uint32_t>>;
// Requires that |array_type_instruction| has opcode OpTypeArray.
// Attempts to find suitable instruction result ids from the values of
// |type_id_to_available_instructions| that would allow a composite of type
// |array_type_instruction| to be constructed. Returns said ids if they can
// be found and an empty vector otherwise.
std::vector<uint32_t> FindComponentsToConstructArray(
const opt::Instruction& array_type_instruction,
const TypeIdToInstructions& type_id_to_available_instructions);
// Similar to FindComponentsToConstructArray, but for matrices.
std::vector<uint32_t> FindComponentsToConstructMatrix(
const opt::Instruction& matrix_type_instruction,
const TypeIdToInstructions& type_id_to_available_instructions);
// Similar to FindComponentsToConstructArray, but for structs.
std::vector<uint32_t> FindComponentsToConstructStruct(
const opt::Instruction& struct_type_instruction,
const TypeIdToInstructions& type_id_to_available_instructions);
// Similar to FindComponentsToConstructArray, but for vectors.
std::vector<uint32_t> FindComponentsToConstructVector(
const opt::Instruction& vector_type_instruction,
const TypeIdToInstructions& type_id_to_available_instructions);
};
} // namespace fuzz
} // namespace spvtools
#endif // SOURCE_FUZZ_FUZZER_PASS_CONSTRUCT_COMPOSITES_H_
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