| // Copyright (c) 2020 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_REPLACE_ADD_SUB_MUL_WITH_CARRYING_EXTENDED_H_ |
| #define SOURCE_FUZZ_TRANSFORMATION_REPLACE_ADD_SUB_MUL_WITH_CARRYING_EXTENDED_H_ |
| |
| #include "source/fuzz/protobufs/spirvfuzz_protobufs.h" |
| #include "source/fuzz/transformation.h" |
| #include "source/fuzz/transformation_context.h" |
| #include "source/opt/ir_context.h" |
| |
| namespace spvtools { |
| namespace fuzz { |
| |
| class TransformationReplaceAddSubMulWithCarryingExtended |
| : public Transformation { |
| public: |
| explicit TransformationReplaceAddSubMulWithCarryingExtended( |
| protobufs::TransformationReplaceAddSubMulWithCarryingExtended message); |
| |
| explicit TransformationReplaceAddSubMulWithCarryingExtended( |
| uint32_t struct_fresh_id, uint32_t result_id); |
| |
| // - |message_.struct_fresh_id| must be fresh. |
| // - |message_.result_id| must refer to an OpIAdd or OpISub or OpIMul |
| // instruction. In this instruction the result type id and the type ids of |
| // the operands must be the same. |
| // - The type of struct holding the intermediate result must exists in the |
| // module. |
| // - For OpIAdd, OpISub both operands must be unsigned. |
| bool IsApplicable( |
| opt::IRContext* ir_context, |
| const TransformationContext& transformation_context) const override; |
| |
| // A transformation that replaces instructions OpIAdd, OpISub, OpIMul with |
| // pairs of instructions. The first one (OpIAddCarry, OpISubBorrow, |
| // OpUMulExtended, OpSMulExtended) computes the result into a struct. The |
| // second one extracts the appropriate component from the struct to yield the |
| // original result. |
| void Apply(opt::IRContext* ir_context, |
| TransformationContext* transformation_context) const override; |
| |
| std::unordered_set<uint32_t> GetFreshIds() const override; |
| |
| protobufs::Transformation ToMessage() const override; |
| |
| // Checks if an OpIAdd, OpISub or OpIMul instruction can be used by the |
| // transformation. |
| bool static IsInstructionSuitable(opt::IRContext* ir_context, |
| const opt::Instruction& instruction); |
| |
| private: |
| protobufs::TransformationReplaceAddSubMulWithCarryingExtended message_; |
| }; |
| |
| } // namespace fuzz |
| } // namespace spvtools |
| |
| #endif // SOURCE_FUZZ_TRANSFORMATION_REPLACE_ADD_SUB_MUL_WITH_CARRYING_EXTENDED_H_ |