mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-10-20 03:50:05 +00:00
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.
347 lines
12 KiB
C++
347 lines
12 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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#include "source/fuzz/transformation_adjust_branch_weights.h"
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#include "source/fuzz/instruction_descriptor.h"
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#include "test/fuzz/fuzz_test_util.h"
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namespace spvtools {
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namespace fuzz {
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namespace {
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TEST(TransformationAdjustBranchWeightsTest, IsApplicableTest) {
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std::string shader = R"(
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OpCapability Shader
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%1 = OpExtInstImport "GLSL.std.450"
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OpMemoryModel Logical GLSL450
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OpEntryPoint Fragment %4 "main" %51 %27
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OpExecutionMode %4 OriginUpperLeft
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OpSource ESSL 310
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OpName %4 "main"
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OpName %25 "buf"
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OpMemberName %25 0 "value"
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OpName %27 ""
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OpName %51 "color"
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OpMemberDecorate %25 0 Offset 0
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OpDecorate %25 Block
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OpDecorate %27 DescriptorSet 0
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OpDecorate %27 Binding 0
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OpDecorate %51 Location 0
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%2 = OpTypeVoid
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%3 = OpTypeFunction %2
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%6 = OpTypeFloat 32
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%7 = OpTypeVector %6 4
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%150 = OpTypeVector %6 2
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%10 = OpConstant %6 0.300000012
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%11 = OpConstant %6 0.400000006
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%12 = OpConstant %6 0.5
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%13 = OpConstant %6 1
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%14 = OpConstantComposite %7 %10 %11 %12 %13
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%15 = OpTypeInt 32 1
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%18 = OpConstant %15 0
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%25 = OpTypeStruct %6
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%26 = OpTypePointer Uniform %25
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%27 = OpVariable %26 Uniform
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%28 = OpTypePointer Uniform %6
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%32 = OpTypeBool
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%103 = OpConstantTrue %32
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%34 = OpConstant %6 0.100000001
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%48 = OpConstant %15 1
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%50 = OpTypePointer Output %7
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%51 = OpVariable %50 Output
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%100 = OpTypePointer Function %6
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%101 = OpVariable %100 Function
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%102 = OpVariable %100 Function
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OpBranch %19
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%19 = OpLabel
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%60 = OpPhi %7 %14 %5 %58 %20
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%59 = OpPhi %15 %18 %5 %49 %20
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%29 = OpAccessChain %28 %27 %18
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%30 = OpLoad %6 %29
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%31 = OpConvertFToS %15 %30
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%33 = OpSLessThan %32 %59 %31
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OpLoopMerge %21 %20 None
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OpBranchConditional %33 %20 %21 1 2
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%20 = OpLabel
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%39 = OpCompositeExtract %6 %60 0
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%40 = OpFAdd %6 %39 %34
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%55 = OpCompositeInsert %7 %40 %60 0
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%44 = OpCompositeExtract %6 %60 1
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%45 = OpFSub %6 %44 %34
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%58 = OpCompositeInsert %7 %45 %55 1
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%49 = OpIAdd %15 %59 %48
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OpBranch %19
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%21 = OpLabel
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OpStore %51 %60
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OpSelectionMerge %105 None
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OpBranchConditional %103 %104 %105
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%104 = OpLabel
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OpBranch %105
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%105 = OpLabel
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OpReturn
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OpFunctionEnd
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)";
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const auto env = SPV_ENV_UNIVERSAL_1_5;
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const auto consumer = nullptr;
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const auto context = BuildModule(env, consumer, shader, kFuzzAssembleOption);
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ASSERT_TRUE(IsValid(env, context.get()));
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spvtools::ValidatorOptions validator_options;
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TransformationContext transformation_context(
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MakeUnique<FactManager>(context.get()), validator_options);
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// Tests OpBranchConditional instruction with weigths.
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auto instruction_descriptor =
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MakeInstructionDescriptor(33, SpvOpBranchConditional, 0);
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auto transformation =
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TransformationAdjustBranchWeights(instruction_descriptor, {0, 1});
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ASSERT_TRUE(
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transformation.IsApplicable(context.get(), transformation_context));
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// Tests the two branch weights equal to 0.
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instruction_descriptor =
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MakeInstructionDescriptor(33, SpvOpBranchConditional, 0);
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transformation =
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TransformationAdjustBranchWeights(instruction_descriptor, {0, 0});
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#ifndef NDEBUG
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ASSERT_DEATH(
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transformation.IsApplicable(context.get(), transformation_context),
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"At least one weight must be non-zero");
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#endif
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// Tests 32-bit unsigned integer overflow.
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instruction_descriptor =
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MakeInstructionDescriptor(33, SpvOpBranchConditional, 0);
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transformation = TransformationAdjustBranchWeights(instruction_descriptor,
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{UINT32_MAX, 0});
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ASSERT_TRUE(
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transformation.IsApplicable(context.get(), transformation_context));
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instruction_descriptor =
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MakeInstructionDescriptor(33, SpvOpBranchConditional, 0);
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transformation = TransformationAdjustBranchWeights(instruction_descriptor,
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{1, UINT32_MAX});
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#ifndef NDEBUG
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ASSERT_DEATH(
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transformation.IsApplicable(context.get(), transformation_context),
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"The sum of the two weights must not be greater than UINT32_MAX");
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#endif
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// Tests OpBranchConditional instruction with no weights.
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instruction_descriptor =
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MakeInstructionDescriptor(21, SpvOpBranchConditional, 0);
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transformation =
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TransformationAdjustBranchWeights(instruction_descriptor, {0, 1});
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ASSERT_TRUE(
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transformation.IsApplicable(context.get(), transformation_context));
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// Tests non-OpBranchConditional instructions.
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instruction_descriptor = MakeInstructionDescriptor(2, SpvOpTypeVoid, 0);
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transformation =
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TransformationAdjustBranchWeights(instruction_descriptor, {5, 6});
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ASSERT_FALSE(
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transformation.IsApplicable(context.get(), transformation_context));
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instruction_descriptor = MakeInstructionDescriptor(20, SpvOpLabel, 0);
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transformation =
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TransformationAdjustBranchWeights(instruction_descriptor, {1, 2});
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ASSERT_FALSE(
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transformation.IsApplicable(context.get(), transformation_context));
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instruction_descriptor = MakeInstructionDescriptor(49, SpvOpIAdd, 0);
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transformation =
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TransformationAdjustBranchWeights(instruction_descriptor, {1, 2});
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ASSERT_FALSE(
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transformation.IsApplicable(context.get(), transformation_context));
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}
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TEST(TransformationAdjustBranchWeightsTest, ApplyTest) {
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std::string shader = R"(
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OpCapability Shader
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%1 = OpExtInstImport "GLSL.std.450"
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OpMemoryModel Logical GLSL450
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OpEntryPoint Fragment %4 "main" %51 %27
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OpExecutionMode %4 OriginUpperLeft
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OpSource ESSL 310
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OpName %4 "main"
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OpName %25 "buf"
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OpMemberName %25 0 "value"
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OpName %27 ""
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OpName %51 "color"
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OpMemberDecorate %25 0 Offset 0
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OpDecorate %25 Block
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OpDecorate %27 DescriptorSet 0
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OpDecorate %27 Binding 0
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OpDecorate %51 Location 0
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%2 = OpTypeVoid
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%3 = OpTypeFunction %2
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%6 = OpTypeFloat 32
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%7 = OpTypeVector %6 4
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%150 = OpTypeVector %6 2
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%10 = OpConstant %6 0.300000012
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%11 = OpConstant %6 0.400000006
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%12 = OpConstant %6 0.5
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%13 = OpConstant %6 1
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%14 = OpConstantComposite %7 %10 %11 %12 %13
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%15 = OpTypeInt 32 1
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%18 = OpConstant %15 0
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%25 = OpTypeStruct %6
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%26 = OpTypePointer Uniform %25
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%27 = OpVariable %26 Uniform
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%28 = OpTypePointer Uniform %6
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%32 = OpTypeBool
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%103 = OpConstantTrue %32
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%34 = OpConstant %6 0.100000001
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%48 = OpConstant %15 1
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%50 = OpTypePointer Output %7
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%51 = OpVariable %50 Output
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%100 = OpTypePointer Function %6
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%101 = OpVariable %100 Function
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%102 = OpVariable %100 Function
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OpBranch %19
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%19 = OpLabel
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%60 = OpPhi %7 %14 %5 %58 %20
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%59 = OpPhi %15 %18 %5 %49 %20
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%29 = OpAccessChain %28 %27 %18
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%30 = OpLoad %6 %29
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%31 = OpConvertFToS %15 %30
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%33 = OpSLessThan %32 %59 %31
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OpLoopMerge %21 %20 None
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OpBranchConditional %33 %20 %21 1 2
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%20 = OpLabel
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%39 = OpCompositeExtract %6 %60 0
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%40 = OpFAdd %6 %39 %34
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%55 = OpCompositeInsert %7 %40 %60 0
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%44 = OpCompositeExtract %6 %60 1
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%45 = OpFSub %6 %44 %34
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%58 = OpCompositeInsert %7 %45 %55 1
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%49 = OpIAdd %15 %59 %48
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OpBranch %19
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%21 = OpLabel
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OpStore %51 %60
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OpSelectionMerge %105 None
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OpBranchConditional %103 %104 %105
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%104 = OpLabel
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OpBranch %105
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%105 = OpLabel
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OpReturn
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OpFunctionEnd
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)";
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const auto env = SPV_ENV_UNIVERSAL_1_5;
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const auto consumer = nullptr;
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const auto context = BuildModule(env, consumer, shader, kFuzzAssembleOption);
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ASSERT_TRUE(IsValid(env, context.get()));
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spvtools::ValidatorOptions validator_options;
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TransformationContext transformation_context(
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MakeUnique<FactManager>(context.get()), validator_options);
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auto instruction_descriptor =
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MakeInstructionDescriptor(33, SpvOpBranchConditional, 0);
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auto transformation =
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TransformationAdjustBranchWeights(instruction_descriptor, {5, 6});
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ApplyAndCheckFreshIds(transformation, context.get(), &transformation_context);
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instruction_descriptor =
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MakeInstructionDescriptor(21, SpvOpBranchConditional, 0);
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transformation =
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TransformationAdjustBranchWeights(instruction_descriptor, {7, 8});
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ApplyAndCheckFreshIds(transformation, context.get(), &transformation_context);
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std::string variant_shader = R"(
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OpCapability Shader
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%1 = OpExtInstImport "GLSL.std.450"
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OpMemoryModel Logical GLSL450
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OpEntryPoint Fragment %4 "main" %51 %27
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OpExecutionMode %4 OriginUpperLeft
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OpSource ESSL 310
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OpName %4 "main"
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OpName %25 "buf"
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OpMemberName %25 0 "value"
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OpName %27 ""
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OpName %51 "color"
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OpMemberDecorate %25 0 Offset 0
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OpDecorate %25 Block
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OpDecorate %27 DescriptorSet 0
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OpDecorate %27 Binding 0
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OpDecorate %51 Location 0
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%2 = OpTypeVoid
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%3 = OpTypeFunction %2
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%6 = OpTypeFloat 32
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%7 = OpTypeVector %6 4
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%150 = OpTypeVector %6 2
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%10 = OpConstant %6 0.300000012
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%11 = OpConstant %6 0.400000006
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%12 = OpConstant %6 0.5
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%13 = OpConstant %6 1
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%14 = OpConstantComposite %7 %10 %11 %12 %13
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%15 = OpTypeInt 32 1
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%18 = OpConstant %15 0
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%25 = OpTypeStruct %6
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%26 = OpTypePointer Uniform %25
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%27 = OpVariable %26 Uniform
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%28 = OpTypePointer Uniform %6
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%32 = OpTypeBool
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%103 = OpConstantTrue %32
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%34 = OpConstant %6 0.100000001
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%48 = OpConstant %15 1
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%50 = OpTypePointer Output %7
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%51 = OpVariable %50 Output
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%100 = OpTypePointer Function %6
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%101 = OpVariable %100 Function
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%102 = OpVariable %100 Function
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OpBranch %19
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%19 = OpLabel
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%60 = OpPhi %7 %14 %5 %58 %20
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%59 = OpPhi %15 %18 %5 %49 %20
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%29 = OpAccessChain %28 %27 %18
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%30 = OpLoad %6 %29
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%31 = OpConvertFToS %15 %30
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%33 = OpSLessThan %32 %59 %31
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OpLoopMerge %21 %20 None
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OpBranchConditional %33 %20 %21 5 6
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%20 = OpLabel
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%39 = OpCompositeExtract %6 %60 0
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%40 = OpFAdd %6 %39 %34
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%55 = OpCompositeInsert %7 %40 %60 0
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%44 = OpCompositeExtract %6 %60 1
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%45 = OpFSub %6 %44 %34
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%58 = OpCompositeInsert %7 %45 %55 1
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%49 = OpIAdd %15 %59 %48
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OpBranch %19
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%21 = OpLabel
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OpStore %51 %60
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OpSelectionMerge %105 None
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OpBranchConditional %103 %104 %105 7 8
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%104 = OpLabel
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OpBranch %105
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%105 = OpLabel
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OpReturn
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OpFunctionEnd
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)";
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ASSERT_TRUE(IsEqual(env, variant_shader, context.get()));
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}
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} // namespace
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} // namespace fuzz
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} // namespace spvtools
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