| // Copyright (c) 2020 Google LLC | |
| // | |
| // 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. | |
| #include "source/fuzz/transformation_add_loop_preheader.h" | |
| #include "gtest/gtest.h" | |
| #include "source/fuzz/fuzzer_util.h" | |
| #include "test/fuzz/fuzz_test_util.h" | |
| namespace spvtools { | |
| namespace fuzz { | |
| namespace { | |
| TEST(TransformationAddLoopPreheaderTest, SimpleTest) { | |
| std::string shader = R"( | |
| OpCapability Shader | |
| %1 = OpExtInstImport "GLSL.std.450" | |
| OpMemoryModel Logical GLSL450 | |
| OpEntryPoint Fragment %4 "main" | |
| OpExecutionMode %4 OriginUpperLeft | |
| OpSource ESSL 310 | |
| OpName %4 "main" | |
| %2 = OpTypeVoid | |
| %3 = OpTypeFunction %2 | |
| %6 = OpTypeBool | |
| %7 = OpConstantFalse %6 | |
| %4 = OpFunction %2 None %3 | |
| %5 = OpLabel | |
| OpSelectionMerge %10 None | |
| OpBranchConditional %7 %8 %9 | |
| %8 = OpLabel | |
| OpBranch %10 | |
| %9 = OpLabel | |
| OpBranch %10 | |
| %10 = OpLabel | |
| OpLoopMerge %12 %11 None | |
| OpBranch %11 | |
| %11 = OpLabel | |
| OpBranchConditional %7 %10 %12 | |
| %12 = OpLabel | |
| OpLoopMerge %14 %13 None | |
| OpBranch %13 | |
| %13 = OpLabel | |
| OpBranchConditional %7 %14 %12 | |
| %15 = OpLabel | |
| OpLoopMerge %17 %16 None | |
| OpBranch %16 | |
| %16 = OpLabel | |
| OpBranchConditional %7 %15 %17 | |
| %17 = OpLabel | |
| OpBranch %14 | |
| %14 = OpLabel | |
| OpReturn | |
| OpFunctionEnd | |
| )"; | |
| const auto env = SPV_ENV_UNIVERSAL_1_5; | |
| const auto consumer = nullptr; | |
| const auto context = BuildModule(env, consumer, shader, kFuzzAssembleOption); | |
| spvtools::ValidatorOptions validator_options; | |
| TransformationContext transformation_context( | |
| MakeUnique<FactManager>(context.get()), validator_options); | |
| ASSERT_TRUE(fuzzerutil::IsValidAndWellFormed(context.get(), validator_options, | |
| kConsoleMessageConsumer)); | |
| // %9 is not a loop header | |
| ASSERT_FALSE(TransformationAddLoopPreheader(9, 15, {}).IsApplicable( | |
| context.get(), transformation_context)); | |
| // The id %12 is not fresh | |
| ASSERT_FALSE(TransformationAddLoopPreheader(10, 12, {}) | |
| .IsApplicable(context.get(), transformation_context)); | |
| // Loop header %15 is not reachable (the only predecessor is the back-edge | |
| // block) | |
| ASSERT_FALSE(TransformationAddLoopPreheader(15, 100, {}) | |
| .IsApplicable(context.get(), transformation_context)); | |
| auto transformation1 = TransformationAddLoopPreheader(10, 20, {}); | |
| ASSERT_TRUE( | |
| transformation1.IsApplicable(context.get(), transformation_context)); | |
| ApplyAndCheckFreshIds(transformation1, context.get(), | |
| &transformation_context); | |
| auto transformation2 = TransformationAddLoopPreheader(12, 21, {}); | |
| ASSERT_TRUE( | |
| transformation2.IsApplicable(context.get(), transformation_context)); | |
| ApplyAndCheckFreshIds(transformation2, context.get(), | |
| &transformation_context); | |
| ASSERT_TRUE(fuzzerutil::IsValidAndWellFormed(context.get(), validator_options, | |
| kConsoleMessageConsumer)); | |
| std::string after_transformations = R"( | |
| OpCapability Shader | |
| %1 = OpExtInstImport "GLSL.std.450" | |
| OpMemoryModel Logical GLSL450 | |
| OpEntryPoint Fragment %4 "main" | |
| OpExecutionMode %4 OriginUpperLeft | |
| OpSource ESSL 310 | |
| OpName %4 "main" | |
| %2 = OpTypeVoid | |
| %3 = OpTypeFunction %2 | |
| %6 = OpTypeBool | |
| %7 = OpConstantFalse %6 | |
| %4 = OpFunction %2 None %3 | |
| %5 = OpLabel | |
| OpSelectionMerge %20 None | |
| OpBranchConditional %7 %8 %9 | |
| %8 = OpLabel | |
| OpBranch %20 | |
| %9 = OpLabel | |
| OpBranch %20 | |
| %20 = OpLabel | |
| OpBranch %10 | |
| %10 = OpLabel | |
| OpLoopMerge %21 %11 None | |
| OpBranch %11 | |
| %11 = OpLabel | |
| OpBranchConditional %7 %10 %21 | |
| %21 = OpLabel | |
| OpBranch %12 | |
| %12 = OpLabel | |
| OpLoopMerge %14 %13 None | |
| OpBranch %13 | |
| %13 = OpLabel | |
| OpBranchConditional %7 %14 %12 | |
| %15 = OpLabel | |
| OpLoopMerge %17 %16 None | |
| OpBranch %16 | |
| %16 = OpLabel | |
| OpBranchConditional %7 %15 %17 | |
| %17 = OpLabel | |
| OpBranch %14 | |
| %14 = OpLabel | |
| OpReturn | |
| OpFunctionEnd | |
| )"; | |
| ASSERT_TRUE(IsEqual(env, after_transformations, context.get())); | |
| } | |
| TEST(TransformationAddLoopPreheaderTest, OpPhi) { | |
| std::string shader = R"( | |
| OpCapability Shader | |
| %1 = OpExtInstImport "GLSL.std.450" | |
| OpMemoryModel Logical GLSL450 | |
| OpEntryPoint Fragment %4 "main" | |
| OpExecutionMode %4 OriginUpperLeft | |
| OpSource ESSL 310 | |
| OpName %4 "main" | |
| %2 = OpTypeVoid | |
| %3 = OpTypeFunction %2 | |
| %6 = OpTypeBool | |
| %7 = OpConstantFalse %6 | |
| %4 = OpFunction %2 None %3 | |
| %5 = OpLabel | |
| %20 = OpCopyObject %6 %7 | |
| OpBranch %8 | |
| %8 = OpLabel | |
| %31 = OpPhi %6 %20 %5 %21 %9 | |
| OpLoopMerge %10 %9 None | |
| OpBranch %9 | |
| %9 = OpLabel | |
| %21 = OpCopyObject %6 %7 | |
| OpBranchConditional %7 %8 %10 | |
| %10 = OpLabel | |
| OpSelectionMerge %13 None | |
| OpBranchConditional %7 %11 %12 | |
| %11 = OpLabel | |
| %22 = OpCopyObject %6 %7 | |
| OpBranch %13 | |
| %12 = OpLabel | |
| %23 = OpCopyObject %6 %7 | |
| OpBranch %13 | |
| %13 = OpLabel | |
| %32 = OpPhi %6 %22 %11 %23 %12 %24 %14 | |
| %33 = OpPhi %6 %7 %11 %7 %12 %24 %14 | |
| OpLoopMerge %15 %14 None | |
| OpBranch %14 | |
| %14 = OpLabel | |
| %24 = OpCopyObject %6 %7 | |
| OpBranchConditional %7 %13 %15 | |
| %15 = OpLabel | |
| OpReturn | |
| OpFunctionEnd | |
| )"; | |
| const auto env = SPV_ENV_UNIVERSAL_1_5; | |
| const auto consumer = nullptr; | |
| const auto context = BuildModule(env, consumer, shader, kFuzzAssembleOption); | |
| spvtools::ValidatorOptions validator_options; | |
| TransformationContext transformation_context( | |
| MakeUnique<FactManager>(context.get()), validator_options); | |
| ASSERT_TRUE(fuzzerutil::IsValidAndWellFormed(context.get(), validator_options, | |
| kConsoleMessageConsumer)); | |
| auto transformation1 = TransformationAddLoopPreheader(8, 40, {}); | |
| ASSERT_TRUE( | |
| transformation1.IsApplicable(context.get(), transformation_context)); | |
| ApplyAndCheckFreshIds(transformation1, context.get(), | |
| &transformation_context); | |
| // Not enough ids for the OpPhi instructions are given | |
| ASSERT_FALSE(TransformationAddLoopPreheader(13, 41, {}) | |
| .IsApplicable(context.get(), transformation_context)); | |
| // Not enough ids for the OpPhi instructions are given | |
| ASSERT_FALSE(TransformationAddLoopPreheader(13, 41, {42}) | |
| .IsApplicable(context.get(), transformation_context)); | |
| // One of the ids is not fresh | |
| ASSERT_FALSE(TransformationAddLoopPreheader(13, 41, {31, 42}) | |
| .IsApplicable(context.get(), transformation_context)); | |
| // One of the ids is repeated | |
| ASSERT_FALSE(TransformationAddLoopPreheader(13, 41, {41, 42}) | |
| .IsApplicable(context.get(), transformation_context)); | |
| auto transformation2 = TransformationAddLoopPreheader(13, 41, {42, 43}); | |
| ASSERT_TRUE( | |
| transformation2.IsApplicable(context.get(), transformation_context)); | |
| ApplyAndCheckFreshIds(transformation2, context.get(), | |
| &transformation_context); | |
| ASSERT_TRUE(fuzzerutil::IsValidAndWellFormed(context.get(), validator_options, | |
| kConsoleMessageConsumer)); | |
| std::string after_transformations = R"( | |
| OpCapability Shader | |
| %1 = OpExtInstImport "GLSL.std.450" | |
| OpMemoryModel Logical GLSL450 | |
| OpEntryPoint Fragment %4 "main" | |
| OpExecutionMode %4 OriginUpperLeft | |
| OpSource ESSL 310 | |
| OpName %4 "main" | |
| %2 = OpTypeVoid | |
| %3 = OpTypeFunction %2 | |
| %6 = OpTypeBool | |
| %7 = OpConstantFalse %6 | |
| %4 = OpFunction %2 None %3 | |
| %5 = OpLabel | |
| %20 = OpCopyObject %6 %7 | |
| OpBranch %40 | |
| %40 = OpLabel | |
| OpBranch %8 | |
| %8 = OpLabel | |
| %31 = OpPhi %6 %20 %40 %21 %9 | |
| OpLoopMerge %10 %9 None | |
| OpBranch %9 | |
| %9 = OpLabel | |
| %21 = OpCopyObject %6 %7 | |
| OpBranchConditional %7 %8 %10 | |
| %10 = OpLabel | |
| OpSelectionMerge %41 None | |
| OpBranchConditional %7 %11 %12 | |
| %11 = OpLabel | |
| %22 = OpCopyObject %6 %7 | |
| OpBranch %41 | |
| %12 = OpLabel | |
| %23 = OpCopyObject %6 %7 | |
| OpBranch %41 | |
| %41 = OpLabel | |
| %42 = OpPhi %6 %22 %11 %23 %12 | |
| %43 = OpPhi %6 %7 %11 %7 %12 | |
| OpBranch %13 | |
| %13 = OpLabel | |
| %32 = OpPhi %6 %42 %41 %24 %14 | |
| %33 = OpPhi %6 %43 %41 %24 %14 | |
| OpLoopMerge %15 %14 None | |
| OpBranch %14 | |
| %14 = OpLabel | |
| %24 = OpCopyObject %6 %7 | |
| OpBranchConditional %7 %13 %15 | |
| %15 = OpLabel | |
| OpReturn | |
| OpFunctionEnd | |
| )"; | |
| ASSERT_TRUE(IsEqual(env, after_transformations, context.get())); | |
| } | |
| } // namespace | |
| } // namespace fuzz | |
| } // namespace spvtools |