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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.
62 lines
2.3 KiB
C++
62 lines
2.3 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_SPLIT_BLOCK_H_
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#define SOURCE_FUZZ_TRANSFORMATION_SPLIT_BLOCK_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 TransformationSplitBlock : public Transformation {
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public:
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explicit TransformationSplitBlock(
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const protobufs::TransformationSplitBlock& message);
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TransformationSplitBlock(uint32_t base_instruction_id, uint32_t offset,
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uint32_t fresh_id);
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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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// - Splitting 'blk' at 'inst', so that all instructions from 'inst' onwards
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// appear in a new block that 'blk' directly jumps to must be valid.
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// - |message_.fresh_id| must not be used by the module.
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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 block with label |message_.fresh_id| is inserted right after 'blk'
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// in program order.
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// - All instructions of 'blk' from 'inst' onwards are moved into the new
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// block.
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// - 'blk' is made to jump unconditionally to the new block.
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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::TransformationSplitBlock 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_SPLIT_BLOCK_H_
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