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// 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_TRANSFORMATION_COMPOSITE_INSERT_H_
#define SOURCE_FUZZ_TRANSFORMATION_COMPOSITE_INSERT_H_
#include "source/fuzz/protobufs/spirvfuzz_protobufs.h"
#include "source/fuzz/transformation.h"
#include "source/fuzz/transformation_context.h"
#include "source/opt/ir_context.h"
namespace spvtools {
namespace fuzz {
class TransformationCompositeInsert : public Transformation {
public:
explicit TransformationCompositeInsert(
protobufs::TransformationCompositeInsert message);
TransformationCompositeInsert(
const protobufs::InstructionDescriptor& instruction_to_insert_before,
uint32_t fresh_id, uint32_t composite_id, uint32_t object_id,
const std::vector<uint32_t>& index);
// - |message_.fresh_id| must be fresh.
// - |message_.composite_id| must refer to an existing composite value.
// - |message_.index| must refer to a correct index in the composite.
// - The type id of the object and the type id of the component of the
// composite at index |message_.index| must be the same.
// - |message_.instruction_to_insert_before| must refer to a defined
// instruction.
// - It must be possible to insert OpCompositeInsert before
// |instruction_to_insert_before|.
bool IsApplicable(
opt::IRContext* ir_context,
const TransformationContext& transformation_context) const override;
// Adds an instruction OpCompositeInsert before
// |instruction_to_insert_before|, which creates a new composite from
// |composite_id| by inserting |object_id| at the specified |index|.
// Synonyms are created between those components which are identical in the
// original and the modified composite and between the inserted object and its
// copy in the modified composite.
void Apply(opt::IRContext* ir_context,
TransformationContext* transformation_context) const override;
std::unordered_set<uint32_t> GetFreshIds() const override;
protobufs::Transformation ToMessage() const override;
// Checks if |instruction| is a instruction of a composite type supported by
// this transformation.
static bool IsCompositeInstructionSupported(opt::IRContext* ir_context,
opt::Instruction* instruction);
private:
// Helper method for adding data synonym facts when applying the
// transformation to |ir_context| and |transformation_context|.
void AddDataSynonymFacts(opt::IRContext* ir_context,
TransformationContext* transformation_context) const;
protobufs::TransformationCompositeInsert message_;
};
} // namespace fuzz
} // namespace spvtools
#endif // SOURCE_FUZZ_TRANSFORMATION_COMPOSITE_INSERT_H_