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https://github.com/KhronosGroup/SPIRV-Tools
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698b56a8f0
This transformation can introduce an instruction that uses OpCopyObject to make a copy of some other result id. This change introduces the transformation, but does not yet introduce a fuzzer pass to actually apply it.
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 fresh_id, uint32_t object,
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uint32_t insert_after_id, uint32_t offset);
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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_.insert_after_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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