// Copyright (c) 2020 André Perez Maselco // // 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_ADD_BIT_INSTRUCTION_SYNONYM_H_ #define SOURCE_FUZZ_TRANSFORMATION_ADD_BIT_INSTRUCTION_SYNONYM_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 { // clang-format off // SPIR-V code to help understand the transformation. // // ---------------------------------------------------------------------------------------------------------------- // | Reference shader | Variant shader | // ---------------------------------------------------------------------------------------------------------------- // | OpCapability Shader | OpCapability Shader | // | OpCapability Int8 | OpCapability Int8 | // | %1 = OpExtInstImport "GLSL.std.450" | %1 = OpExtInstImport "GLSL.std.450" | // | OpMemoryModel Logical GLSL450 | OpMemoryModel Logical GLSL450 | // | OpEntryPoint Vertex %7 "main" | OpEntryPoint Vertex %7 "main" | // | | | // | ; Types | ; Types | // | %2 = OpTypeInt 8 0 | %2 = OpTypeInt 8 0 | // | %3 = OpTypeVoid | %3 = OpTypeVoid | // | %4 = OpTypeFunction %3 | %4 = OpTypeFunction %3 | // | | | // | ; Constants | ; Constants | // | %5 = OpConstant %2 0 | %5 = OpConstant %2 0 | // | %6 = OpConstant %2 1 | %6 = OpConstant %2 1 | // | | %10 = OpConstant %2 2 | // | ; main function | %11 = OpConstant %2 3 | // | %7 = OpFunction %3 None %4 | %12 = OpConstant %2 4 | // | %8 = OpLabel | %13 = OpConstant %2 5 | // | %9 = OpBitwiseOr %2 %5 %6 ; bit instruction | %14 = OpConstant %2 6 | // | OpReturn | %15 = OpConstant %2 7 | // | OpFunctionEnd | | // | | ; main function | // | | %7 = OpFunction %3 None %4 | // | | %8 = OpLabel | // | | | // | | %16 = OpBitFieldUExtract %2 %5 %5 %6 ; extracts bit 0 from %5 | // | | %17 = OpBitFieldUExtract %2 %6 %5 %6 ; extracts bit 0 from %6 | // | | %18 = OpBitwiseOr %2 %16 %17 | // | | | // | | %19 = OpBitFieldUExtract %2 %5 %6 %6 ; extracts bit 1 from %5 | // | | %20 = OpBitFieldUExtract %2 %6 %6 %6 ; extracts bit 1 from %6 | // | | %21 = OpBitwiseOr %2 %19 %20 | // | | | // | | %22 = OpBitFieldUExtract %2 %5 %10 %6 ; extracts bit 2 from %5 | // | | %23 = OpBitFieldUExtract %2 %6 %10 %6 ; extracts bit 2 from %6 | // | | %24 = OpBitwiseOr %2 %22 %23 | // | | | // | | %25 = OpBitFieldUExtract %2 %5 %11 %6 ; extracts bit 3 from %5 | // | | %26 = OpBitFieldUExtract %2 %6 %11 %6 ; extracts bit 3 from %6 | // | | %27 = OpBitwiseOr %2 %25 %26 | // | | | // | | %28 = OpBitFieldUExtract %2 %5 %12 %6 ; extracts bit 4 from %5 | // | | %29 = OpBitFieldUExtract %2 %6 %12 %6 ; extracts bit 4 from %6 | // | | %30 = OpBitwiseOr %2 %28 %29 | // | | | // | | %31 = OpBitFieldUExtract %2 %5 %13 %6 ; extracts bit 5 from %5 | // | | %32 = OpBitFieldUExtract %2 %6 %13 %6 ; extracts bit 5 from %6 | // | | %33 = OpBitwiseOr %2 %31 %32 | // | | | // | | %34 = OpBitFieldUExtract %2 %5 %14 %6 ; extracts bit 6 from %5 | // | | %35 = OpBitFieldUExtract %2 %6 %14 %6 ; extracts bit 6 from %6 | // | | %36 = OpBitwiseOr %2 %34 %35 | // | | | // | | %37 = OpBitFieldUExtract %2 %5 %15 %6 ; extracts bit 7 from %5 | // | | %38 = OpBitFieldUExtract %2 %6 %15 %6 ; extracts bit 7 from %6 | // | | %39 = OpBitwiseOr %2 %37 %38 | // | | | // | | %40 = OpBitFieldInsert %2 %18 %21 %6 %6 ; inserts bit 1 | // | | %41 = OpBitFieldInsert %2 %40 %24 %10 %6 ; inserts bit 2 | // | | %42 = OpBitFieldInsert %2 %41 %27 %11 %6 ; inserts bit 3 | // | | %43 = OpBitFieldInsert %2 %42 %30 %12 %6 ; inserts bit 4 | // | | %44 = OpBitFieldInsert %2 %43 %33 %13 %6 ; inserts bit 5 | // | | %45 = OpBitFieldInsert %2 %44 %36 %14 %6 ; inserts bit 6 | // | | %46 = OpBitFieldInsert %2 %45 %39 %15 %6 ; inserts bit 7 | // | | %9 = OpBitwiseOr %2 %5 %6 ; bit instruction | // | | OpReturn | // | | OpFunctionEnd | // ---------------------------------------------------------------------------------------------------------------- // // After the transformation, %9 and %46 will be synonymous. // clang-format on class TransformationAddBitInstructionSynonym : public Transformation { public: explicit TransformationAddBitInstructionSynonym( protobufs::TransformationAddBitInstructionSynonym message); TransformationAddBitInstructionSynonym( const uint32_t instruction_result_id, const std::vector& fresh_ids); // - |message_.instruction_result_id| must be a bit instruction. // - |message_.fresh_ids| must be fresh ids needed to apply the // transformation. bool IsApplicable( opt::IRContext* ir_context, const TransformationContext& transformation_context) const override; // Adds a bit instruction synonym. void Apply(opt::IRContext* ir_context, TransformationContext* transformation_context) const override; std::unordered_set GetFreshIds() const override; protobufs::Transformation ToMessage() const override; // Returns the number of fresh ids required to apply the transformation. static uint32_t GetRequiredFreshIdCount(opt::IRContext* ir_context, opt::Instruction* bit_instruction); // Returns true if: // - A |bit_instruction| is one of OpBitwiseOr, OpBitwiseAnd, OpBitwiseXor or // OpNot. // - |bit_instruction|'s operands are scalars. // - The operands have the same signedness. static bool IsInstructionSupported(opt::IRContext* ir_context, opt::Instruction* instruction); private: protobufs::TransformationAddBitInstructionSynonym message_; // Adds OpBitwise* or OpNot synonym. void AddOpBitwiseOrOpNotSynonym(opt::IRContext* ir_context, TransformationContext* transformation_context, opt::Instruction* bitwise_instruction) const; }; } // namespace fuzz } // namespace spvtools #endif // SOURCE_FUZZ_TRANSFORMATION_ADD_BIT_INSTRUCTION_SYNONYM_H_