1 // Copyright (c) 2019 Google LLC 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef SOURCE_FUZZ_TRANSFORMATION_SET_MEMORY_OPERANDS_MASK_H_ 16 #define SOURCE_FUZZ_TRANSFORMATION_SET_MEMORY_OPERANDS_MASK_H_ 17 18 #include "source/fuzz/protobufs/spirvfuzz_protobufs.h" 19 #include "source/fuzz/transformation.h" 20 #include "source/fuzz/transformation_context.h" 21 #include "source/opt/ir_context.h" 22 23 namespace spvtools { 24 namespace fuzz { 25 26 class TransformationSetMemoryOperandsMask : public Transformation { 27 public: 28 explicit TransformationSetMemoryOperandsMask( 29 protobufs::TransformationSetMemoryOperandsMask message); 30 31 TransformationSetMemoryOperandsMask( 32 const protobufs::InstructionDescriptor& memory_access_instruction, 33 uint32_t memory_operands_mask, uint32_t memory_operands_mask_index); 34 35 // - |message_.memory_access_instruction| must describe a memory access 36 // instruction. 37 // - |message_.memory_operands_mask_index| must be suitable for this memory 38 // access instruction, e.g. it must be 0 in the case of OpLoad, and may be 39 // 1 in the case of OpCopyMemory if the SPIR-V version is 1.4 or higher. 40 // - |message_.memory_operands_mask| must be identical to the original memory 41 // operands mask, except that Volatile may be added, and Nontemporal may be 42 // toggled. 43 bool IsApplicable( 44 opt::IRContext* ir_context, 45 const TransformationContext& transformation_context) const override; 46 47 // Replaces the operands mask identified by 48 // |message_.memory_operands_mask_index| in the instruction described by 49 // |message_.memory_access_instruction| with |message_.memory_operands_mask|, 50 // creating an input operand for the mask if no such operand was present. 51 void Apply(opt::IRContext* ir_context, 52 TransformationContext* transformation_context) const override; 53 54 std::unordered_set<uint32_t> GetFreshIds() const override; 55 56 protobufs::Transformation ToMessage() const override; 57 58 // Helper function that determines whether |instruction| is a memory 59 // instruction (e.g. OpLoad). 60 static bool IsMemoryAccess(const opt::Instruction& instruction); 61 62 // Does the version of SPIR-V being used support multiple memory operand 63 // masks on relevant memory access instructions? 64 static bool MultipleMemoryOperandMasksAreSupported( 65 opt::IRContext* ir_context); 66 67 // Helper function to get the input operand index associated with mask number 68 // |mask_index|. This is a bit tricky if there are multiple masks, because the 69 // index associated with the second mask depends on whether the first mask 70 // includes any flags such as Aligned that have corresponding operands. 71 static uint32_t GetInOperandIndexForMask(const opt::Instruction& instruction, 72 uint32_t mask_index); 73 74 private: 75 protobufs::TransformationSetMemoryOperandsMask message_; 76 }; 77 78 } // namespace fuzz 79 } // namespace spvtools 80 81 #endif // SOURCE_FUZZ_TRANSFORMATION_SET_MEMORY_OPERANDS_MASK_H_ 82