| // 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_EQUATION_INSTRUCTION_H_ |
| #define SOURCE_FUZZ_TRANSFORMATION_EQUATION_INSTRUCTION_H_ |
| |
| #include <vector> |
| |
| #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 TransformationEquationInstruction : public Transformation { |
| public: |
| explicit TransformationEquationInstruction( |
| protobufs::TransformationEquationInstruction message); |
| |
| TransformationEquationInstruction( |
| uint32_t fresh_id, SpvOp opcode, |
| const std::vector<uint32_t>& in_operand_id, |
| const protobufs::InstructionDescriptor& instruction_to_insert_before); |
| |
| // - |message_.fresh_id| must be fresh. |
| // - |message_.instruction_to_insert_before| must identify an instruction |
| // before which an equation instruction can legitimately be inserted. |
| // - Each id in |message_.in_operand_id| must exist, not be an OpUndef, and |
| // be available before |message_.instruction_to_insert_before|. |
| // - |message_.opcode| must be an opcode for which we know how to handle |
| // equations, the types of the ids in |message_.in_operand_id| must be |
| // suitable for use with this opcode, and the module must contain an |
| // appropriate result type id. |
| bool IsApplicable( |
| opt::IRContext* ir_context, |
| const TransformationContext& transformation_context) const override; |
| |
| // Adds an instruction to the module, right before |
| // |message_.instruction_to_insert_before|, of the form: |
| // |
| // |message_.fresh_id| = |message_.opcode| %type |message_.in_operand_ids| |
| // |
| // where %type is a type id that already exists in the module and that is |
| // compatible with the opcode and input operands. |
| // |
| // The fact manager is also updated to inform it of this equation fact. |
| void Apply(opt::IRContext* ir_context, |
| TransformationContext* transformation_context) const override; |
| |
| std::unordered_set<uint32_t> GetFreshIds() const override; |
| |
| protobufs::Transformation ToMessage() const override; |
| |
| private: |
| // Returns type id for the equation instruction. Returns 0 if result type does |
| // not exist. |
| uint32_t MaybeGetResultTypeId(opt::IRContext* ir_context) const; |
| |
| protobufs::TransformationEquationInstruction message_; |
| }; |
| |
| } // namespace fuzz |
| } // namespace spvtools |
| |
| #endif // SOURCE_FUZZ_TRANSFORMATION_EQUATION_INSTRUCTION_H_ |