| // Copyright (c) 2019 Google LLC |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #ifndef SOURCE_FUZZ_TRANSFORMATION_SPLIT_BLOCK_H_ |
| #define SOURCE_FUZZ_TRANSFORMATION_SPLIT_BLOCK_H_ |
| |
| #include "source/fuzz/fact_manager.h" |
| #include "source/fuzz/protobufs/spirvfuzz_protobufs.h" |
| #include "source/opt/ir_context.h" |
| |
| namespace spvtools { |
| namespace fuzz { |
| namespace transformation { |
| |
| // - |result_id| must be the result id of an instruction 'base' in some |
| // block 'blk'. |
| // - 'blk' must contain an instruction 'inst' located |offset| instructions |
| // after 'inst' (if |offset| = 0 then 'inst' = 'base'). |
| // - Splitting 'blk' at 'inst', so that all instructions from 'inst' onwards |
| // appear in a new block that 'blk' directly jumps to must be valid. |
| // - |fresh_id| must not be used by the module. |
| bool IsApplicable(const protobufs::TransformationSplitBlock& message, |
| opt::IRContext* context, const FactManager& fact_manager); |
| |
| // - A new block with label |fresh_id| is inserted right after 'blk' in |
| // program order. |
| // - All instructions of 'blk' from 'inst' onwards are moved into the new |
| // block. |
| // - 'blk' is made to jump unconditionally to the new block. |
| void Apply(const protobufs::TransformationSplitBlock& message, |
| opt::IRContext* context, FactManager* fact_manager); |
| |
| // Creates a protobuf message representing a block-splitting transformation. |
| protobufs::TransformationSplitBlock MakeTransformationSplitBlock( |
| uint32_t result_id, uint32_t offset, uint32_t fresh_id); |
| |
| } // namespace transformation |
| } // namespace fuzz |
| } // namespace spvtools |
| |
| #endif // SOURCE_FUZZ_TRANSFORMATION_SPLIT_BLOCK_H_ |