2020-09-15 22:36:23 +00:00
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// Copyright (c) 2020 André Perez Maselco
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef SOURCE_FUZZ_TRANSFORMATION_ADD_BIT_INSTRUCTION_SYNONYM_H_
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#define SOURCE_FUZZ_TRANSFORMATION_ADD_BIT_INSTRUCTION_SYNONYM_H_
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#include "source/fuzz/protobufs/spirvfuzz_protobufs.h"
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#include "source/fuzz/transformation.h"
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#include "source/fuzz/transformation_context.h"
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#include "source/opt/ir_context.h"
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namespace spvtools {
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namespace fuzz {
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// clang-format off
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// SPIR-V code to help understand the transformation.
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//
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// ----------------------------------------------------------------------------------------------------------------
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// | Reference shader | Variant shader |
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// ----------------------------------------------------------------------------------------------------------------
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// | OpCapability Shader | OpCapability Shader |
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// | OpCapability Int8 | OpCapability Int8 |
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// | %1 = OpExtInstImport "GLSL.std.450" | %1 = OpExtInstImport "GLSL.std.450" |
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// | OpMemoryModel Logical GLSL450 | OpMemoryModel Logical GLSL450 |
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// | OpEntryPoint Vertex %7 "main" | OpEntryPoint Vertex %7 "main" |
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// | | |
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// | ; Types | ; Types |
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// | %2 = OpTypeInt 8 0 | %2 = OpTypeInt 8 0 |
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// | %3 = OpTypeVoid | %3 = OpTypeVoid |
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// | %4 = OpTypeFunction %3 | %4 = OpTypeFunction %3 |
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// | | |
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// | ; Constants | ; Constants |
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// | %5 = OpConstant %2 0 | %5 = OpConstant %2 0 |
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// | %6 = OpConstant %2 1 | %6 = OpConstant %2 1 |
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// | | %10 = OpConstant %2 2 |
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// | ; main function | %11 = OpConstant %2 3 |
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// | %7 = OpFunction %3 None %4 | %12 = OpConstant %2 4 |
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// | %8 = OpLabel | %13 = OpConstant %2 5 |
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// | %9 = OpBitwiseOr %2 %5 %6 ; bit instruction | %14 = OpConstant %2 6 |
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// | OpReturn | %15 = OpConstant %2 7 |
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// | OpFunctionEnd | |
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// | | ; main function |
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// | | %7 = OpFunction %3 None %4 |
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// | | %8 = OpLabel |
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// | | |
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// | | %16 = OpBitFieldUExtract %2 %5 %5 %6 ; extracts bit 0 from %5 |
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// | | %17 = OpBitFieldUExtract %2 %6 %5 %6 ; extracts bit 0 from %6 |
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// | | %18 = OpBitwiseOr %2 %16 %17 |
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// | | |
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// | | %19 = OpBitFieldUExtract %2 %5 %6 %6 ; extracts bit 1 from %5 |
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// | | %20 = OpBitFieldUExtract %2 %6 %6 %6 ; extracts bit 1 from %6 |
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// | | %21 = OpBitwiseOr %2 %19 %20 |
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// | | |
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// | | %22 = OpBitFieldUExtract %2 %5 %10 %6 ; extracts bit 2 from %5 |
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// | | %23 = OpBitFieldUExtract %2 %6 %10 %6 ; extracts bit 2 from %6 |
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// | | %24 = OpBitwiseOr %2 %22 %23 |
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// | | |
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// | | %25 = OpBitFieldUExtract %2 %5 %11 %6 ; extracts bit 3 from %5 |
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// | | %26 = OpBitFieldUExtract %2 %6 %11 %6 ; extracts bit 3 from %6 |
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// | | %27 = OpBitwiseOr %2 %25 %26 |
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// | | |
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// | | %28 = OpBitFieldUExtract %2 %5 %12 %6 ; extracts bit 4 from %5 |
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// | | %29 = OpBitFieldUExtract %2 %6 %12 %6 ; extracts bit 4 from %6 |
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// | | %30 = OpBitwiseOr %2 %28 %29 |
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// | | |
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// | | %31 = OpBitFieldUExtract %2 %5 %13 %6 ; extracts bit 5 from %5 |
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// | | %32 = OpBitFieldUExtract %2 %6 %13 %6 ; extracts bit 5 from %6 |
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// | | %33 = OpBitwiseOr %2 %31 %32 |
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// | | |
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// | | %34 = OpBitFieldUExtract %2 %5 %14 %6 ; extracts bit 6 from %5 |
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// | | %35 = OpBitFieldUExtract %2 %6 %14 %6 ; extracts bit 6 from %6 |
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// | | %36 = OpBitwiseOr %2 %34 %35 |
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// | | |
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// | | %37 = OpBitFieldUExtract %2 %5 %15 %6 ; extracts bit 7 from %5 |
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// | | %38 = OpBitFieldUExtract %2 %6 %15 %6 ; extracts bit 7 from %6 |
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// | | %39 = OpBitwiseOr %2 %37 %38 |
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// | | |
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// | | %40 = OpBitFieldInsert %2 %18 %21 %6 %6 ; inserts bit 1 |
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// | | %41 = OpBitFieldInsert %2 %40 %24 %10 %6 ; inserts bit 2 |
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// | | %42 = OpBitFieldInsert %2 %41 %27 %11 %6 ; inserts bit 3 |
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// | | %43 = OpBitFieldInsert %2 %42 %30 %12 %6 ; inserts bit 4 |
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// | | %44 = OpBitFieldInsert %2 %43 %33 %13 %6 ; inserts bit 5 |
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// | | %45 = OpBitFieldInsert %2 %44 %36 %14 %6 ; inserts bit 6 |
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// | | %46 = OpBitFieldInsert %2 %45 %39 %15 %6 ; inserts bit 7 |
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// | | %9 = OpBitwiseOr %2 %5 %6 ; bit instruction |
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// | | OpReturn |
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// | | OpFunctionEnd |
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// ----------------------------------------------------------------------------------------------------------------
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//
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// After the transformation, %9 and %46 will be synonymous.
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// clang-format on
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class TransformationAddBitInstructionSynonym : public Transformation {
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public:
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explicit TransformationAddBitInstructionSynonym(
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2021-03-23 13:31:44 +00:00
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protobufs::TransformationAddBitInstructionSynonym message);
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2020-09-15 22:36:23 +00:00
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TransformationAddBitInstructionSynonym(
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const uint32_t instruction_result_id,
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const std::vector<uint32_t>& fresh_ids);
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// - |message_.instruction_result_id| must be a bit instruction.
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// - |message_.fresh_ids| must be fresh ids needed to apply the
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// transformation.
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bool IsApplicable(
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opt::IRContext* ir_context,
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const TransformationContext& transformation_context) const override;
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// Adds a bit instruction synonym.
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void Apply(opt::IRContext* ir_context,
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TransformationContext* transformation_context) const override;
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2020-09-29 21:12:49 +00:00
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std::unordered_set<uint32_t> GetFreshIds() const override;
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2020-09-15 22:36:23 +00:00
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protobufs::Transformation ToMessage() const override;
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// Returns the number of fresh ids required to apply the transformation.
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static uint32_t GetRequiredFreshIdCount(opt::IRContext* ir_context,
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opt::Instruction* bit_instruction);
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2021-06-09 18:56:56 +00:00
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// Returns true if:
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// - A |bit_instruction| is one of OpBitwiseOr, OpBitwiseAnd, OpBitwiseXor or
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// OpNot.
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// - |bit_instruction|'s operands are scalars.
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// - The operands have the same signedness.
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static bool IsInstructionSupported(opt::IRContext* ir_context,
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opt::Instruction* instruction);
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2020-09-15 22:36:23 +00:00
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private:
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protobufs::TransformationAddBitInstructionSynonym message_;
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2020-09-26 09:42:46 +00:00
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// Adds OpBitwise* or OpNot synonym.
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void AddOpBitwiseOrOpNotSynonym(opt::IRContext* ir_context,
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TransformationContext* transformation_context,
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opt::Instruction* bitwise_instruction) const;
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2020-09-15 22:36:23 +00:00
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};
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} // namespace fuzz
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} // namespace spvtools
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#endif // SOURCE_FUZZ_TRANSFORMATION_ADD_BIT_INSTRUCTION_SYNONYM_H_
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