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https://github.com/KhronosGroup/SPIRV-Tools
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96354f5047
This change adds a transformation and associated fuzzer pass for merging adjacent blocks in a module, re-using block merging code from the optimizer.
55 lines
1.9 KiB
C++
55 lines
1.9 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_MERGE_BLOCKS_H_
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#define SOURCE_FUZZ_TRANSFORMATION_MERGE_BLOCKS_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 TransformationMergeBlocks : public Transformation {
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public:
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explicit TransformationMergeBlocks(
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const protobufs::TransformationMergeBlocks& message);
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TransformationMergeBlocks(uint32_t block_id);
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// - |message_.block_id| must be the id of a block, b
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// - b must have a single predecessor, a
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// - b must be the sole successor of a
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// - Replacing a with the merge of a and b (and removing b) must lead to a
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// valid module
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bool IsApplicable(opt::IRContext* context,
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const FactManager& fact_manager) const override;
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// The contents of b are merged into a, and a's terminator is replaced with
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// the terminator of b. Block b is removed from the module.
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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::TransformationMergeBlocks 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_MERGE_BLOCKS_H_
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