mirror of
https://github.com/KhronosGroup/SPIRV-Tools
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fcb22ecf0f
Adds a virtual method, GetFreshIds(), to Transformation. Every transformation uses this to indicate which ids in its protobuf message are fresh ids. This means that when replaying a sequence of transformations the replayer can obtain a smallest id that is not in use by the module already and that will not be used by any transformation by necessity. Ids greater than or equal to this id can be used as overflow ids. Fixes #3851.
144 lines
11 KiB
C++
144 lines
11 KiB
C++
// 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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const protobufs::TransformationAddBitInstructionSynonym& message);
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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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std::unordered_set<uint32_t> GetFreshIds() const override;
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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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private:
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protobufs::TransformationAddBitInstructionSynonym message_;
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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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};
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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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