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- // 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
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