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53 lines
2.1 KiB
C++
53 lines
2.1 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/opt/ir_context.h"
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namespace spvtools {
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namespace fuzz {
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namespace transformation {
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// - |result_id| must be the result id of an instruction 'base' in some
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// block 'blk'.
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// - 'blk' must contain an instruction 'inst' located |offset| instructions
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// after 'inst' (if |offset| = 0 then 'inst' = '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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// - |fresh_id| must not be used by the module.
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bool IsApplicable(const protobufs::TransformationSplitBlock& message,
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opt::IRContext* context, const FactManager& fact_manager);
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// - A new block with label |fresh_id| is inserted right after 'blk' in
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// 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(const protobufs::TransformationSplitBlock& message,
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opt::IRContext* context, FactManager* fact_manager);
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// Creates a protobuf message representing a block-splitting transformation.
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protobufs::TransformationSplitBlock MakeTransformationSplitBlock(
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uint32_t result_id, uint32_t offset, uint32_t fresh_id);
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} // namespace transformation
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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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