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https://github.com/KhronosGroup/SPIRV-Tools
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5910bb8e94
Adds a fuzzer pass and transformation to create a composite (array, matrix, struct or vector) from available constituent components, and inform the fact manager that each component of the new composite is synonymous with the id that was used to construct it. This allows the "replace id with synonym" pass to then replace uses of said ids with uses of elements extracted from the composite. Fixes #2858.
69 lines
2.7 KiB
C++
69 lines
2.7 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_TRANSFORMATION_COPY_OBJECT_H_
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#define SOURCE_FUZZ_TRANSFORMATION_COPY_OBJECT_H_
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#include "source/fuzz/fact_manager.h"
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#include "source/fuzz/protobufs/spirvfuzz_protobufs.h"
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#include "source/fuzz/transformation.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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class TransformationCopyObject : public Transformation {
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public:
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explicit TransformationCopyObject(
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const protobufs::TransformationCopyObject& message);
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TransformationCopyObject(uint32_t object, uint32_t base_instruction_id,
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uint32_t offset, uint32_t fresh_id);
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// - |message_.fresh_id| must not be used by the module.
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// - |message_.object| must be a result id that is a legitimate operand for
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// OpCopyObject. In particular, it must be the id of an instruction that
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// has a result type
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// - |message_.object| must not be the target of any decoration.
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// TODO(afd): consider copying decorations along with objects.
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// - |message_.base_instruction_id| must be the result id of an instruction
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// 'base' in some block 'blk'.
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// - 'blk' must contain an instruction 'inst' located |message_.offset|
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// instructions after 'base' (if |message_.offset| = 0 then 'inst' =
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// 'base').
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// - It must be legal to insert an OpCopyObject instruction directly
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// before 'inst'.
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// - |message_.object| must be available directly before 'inst'.
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bool IsApplicable(opt::IRContext* context,
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const FactManager& fact_manager) const override;
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// - A new instruction,
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// %|message_.fresh_id| = OpCopyObject %ty %|message_.object|
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// is added directly before the instruction at |message_.insert_after_id| +
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// |message_|.offset, where %ty is the type of |message_.object|.
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// - The fact that |message_.fresh_id| and |message_.object| are synonyms
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// is added to the fact manager.
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void Apply(opt::IRContext* context, FactManager* fact_manager) const override;
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protobufs::Transformation ToMessage() const override;
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private:
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protobufs::TransformationCopyObject message_;
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};
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} // namespace fuzz
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} // namespace spvtools
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#endif // SOURCE_FUZZ_TRANSFORMATION_COPY_OBJECT_H_
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