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// Copyright (c) 2020 Vasyl Teliman
//
// 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_wrap_region_in_selection.h"
#include "gtest/gtest.h"
#include "source/fuzz/fuzzer_util.h"
#include "source/fuzz/instruction_descriptor.h"
#include "test/fuzz/fuzz_test_util.h"
namespace spvtools {
namespace fuzz {
namespace {
TEST(TransformationWrapRegionInSelectionTest, BasicTest) {
std::string shader = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %4 "main"
OpExecutionMode %4 OriginUpperLeft
OpSource ESSL 310
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%7 = OpTypeBool
%8 = OpConstantTrue %7
%4 = OpFunction %2 None %3
%5 = OpLabel
OpBranch %6
%6 = OpLabel
OpSelectionMerge %12 None
OpBranchConditional %8 %11 %12
%11 = OpLabel
OpReturn
%12 = OpLabel
OpSelectionMerge %15 None
OpBranchConditional %8 %13 %14
%13 = OpLabel
OpBranch %15
%14 = OpLabel
OpBranch %15
%15 = OpLabel
OpBranch %16
%16 = OpLabel
OpReturn
OpFunctionEnd
%9 = OpFunction %2 None %3
%10 = OpLabel
OpBranch %20
%20 = OpLabel
OpLoopMerge %23 %22 None
OpBranch %21
%21 = OpLabel
OpBranchConditional %8 %24 %23
%24 = OpLabel
OpBranch %22
; continue target
%22 = OpLabel
OpLoopMerge %25 %28 None
OpBranchConditional %8 %27 %25
%27 = OpLabel
OpBranch %28
%28 = OpLabel
OpBranch %22
%25 = OpLabel
OpBranch %20
; merge block
%23 = OpLabel
OpBranch %26
%26 = OpLabel
OpReturn
OpFunctionEnd
)";
const auto env = SPV_ENV_UNIVERSAL_1_3;
const auto consumer = nullptr;
const auto context = BuildModule(env, consumer, shader, kFuzzAssembleOption);
spvtools::ValidatorOptions validator_options;
ASSERT_TRUE(fuzzerutil::IsValidAndWellFormed(context.get(), validator_options,
kConsoleMessageConsumer));
TransformationContext transformation_context(
MakeUnique<FactManager>(context.get()), validator_options);
// Boolean constant does not exist.
ASSERT_FALSE(TransformationWrapRegionInSelection(5, 6, false)
.IsApplicable(context.get(), transformation_context));
// Irrelevant constant does not exist.
ASSERT_FALSE(TransformationWrapRegionInSelection(5, 6, true)
.IsApplicable(context.get(), transformation_context));
transformation_context.GetFactManager()->AddFactIdIsIrrelevant(8);
// Block ids are invalid.
ASSERT_FALSE(TransformationWrapRegionInSelection(100, 6, true)
.IsApplicable(context.get(), transformation_context));
ASSERT_FALSE(TransformationWrapRegionInSelection(5, 100, true)
.IsApplicable(context.get(), transformation_context));
// Blocks are from different functions.
ASSERT_FALSE(TransformationWrapRegionInSelection(5, 10, true)
.IsApplicable(context.get(), transformation_context));
// Header block candidate does not dominate merge block candidate.
ASSERT_FALSE(TransformationWrapRegionInSelection(13, 16, true)
.IsApplicable(context.get(), transformation_context));
// Header block candidate does not *strictly* dominate merge block candidate.
ASSERT_FALSE(TransformationWrapRegionInSelection(5, 5, true)
.IsApplicable(context.get(), transformation_context));
// Merge block candidate does not postdominate header block candidate.
ASSERT_FALSE(TransformationWrapRegionInSelection(5, 16, true)
.IsApplicable(context.get(), transformation_context));
// Header block candidate is already a header block of some other construct.
ASSERT_FALSE(TransformationWrapRegionInSelection(12, 16, true)
.IsApplicable(context.get(), transformation_context));
// Header block's terminator is not an OpBranch.
ASSERT_FALSE(TransformationWrapRegionInSelection(21, 24, true)
.IsApplicable(context.get(), transformation_context));
// Merge block candidate is already a merge block of some other construct.
ASSERT_FALSE(TransformationWrapRegionInSelection(5, 15, true)
.IsApplicable(context.get(), transformation_context));
// Header block candidate and merge block candidate are in different
// constructs.
ASSERT_FALSE(TransformationWrapRegionInSelection(10, 21, true)
.IsApplicable(context.get(), transformation_context));
ASSERT_FALSE(TransformationWrapRegionInSelection(24, 25, true)
.IsApplicable(context.get(), transformation_context));
ASSERT_FALSE(TransformationWrapRegionInSelection(24, 22, true)
.IsApplicable(context.get(), transformation_context));
ASSERT_FALSE(TransformationWrapRegionInSelection(24, 27, true)
.IsApplicable(context.get(), transformation_context));
{
// Header block candidate can be a merge block of some existing construct.
TransformationWrapRegionInSelection transformation(15, 16, true);
ASSERT_TRUE(
transformation.IsApplicable(context.get(), transformation_context));
ApplyAndCheckFreshIds(transformation, context.get(),
&transformation_context);
ASSERT_TRUE(fuzzerutil::IsValidAndWellFormed(
context.get(), validator_options, kConsoleMessageConsumer));
}
{
// Merge block candidate can be a header block of some existing construct.
TransformationWrapRegionInSelection transformation(5, 6, true);
ASSERT_TRUE(
transformation.IsApplicable(context.get(), transformation_context));
ApplyAndCheckFreshIds(transformation, context.get(),
&transformation_context);
ASSERT_TRUE(fuzzerutil::IsValidAndWellFormed(
context.get(), validator_options, kConsoleMessageConsumer));
}
{
// Wrap a loop construct.
TransformationWrapRegionInSelection transformation(10, 26, true);
ASSERT_TRUE(
transformation.IsApplicable(context.get(), transformation_context));
ApplyAndCheckFreshIds(transformation, context.get(),
&transformation_context);
ASSERT_TRUE(fuzzerutil::IsValidAndWellFormed(
context.get(), validator_options, kConsoleMessageConsumer));
}
std::string after_transformation = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %4 "main"
OpExecutionMode %4 OriginUpperLeft
OpSource ESSL 310
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%7 = OpTypeBool
%8 = OpConstantTrue %7
%4 = OpFunction %2 None %3
%5 = OpLabel
OpSelectionMerge %6 None
OpBranchConditional %8 %6 %6
%6 = OpLabel
OpSelectionMerge %12 None
OpBranchConditional %8 %11 %12
%11 = OpLabel
OpReturn
%12 = OpLabel
OpSelectionMerge %15 None
OpBranchConditional %8 %13 %14
%13 = OpLabel
OpBranch %15
%14 = OpLabel
OpBranch %15
%15 = OpLabel
OpSelectionMerge %16 None
OpBranchConditional %8 %16 %16
%16 = OpLabel
OpReturn
OpFunctionEnd
%9 = OpFunction %2 None %3
%10 = OpLabel
OpSelectionMerge %26 None
OpBranchConditional %8 %20 %20
%20 = OpLabel
OpLoopMerge %23 %22 None
OpBranch %21
%21 = OpLabel
OpBranchConditional %8 %24 %23
%24 = OpLabel
OpBranch %22
; continue target
%22 = OpLabel
OpLoopMerge %25 %28 None
OpBranchConditional %8 %27 %25
%27 = OpLabel
OpBranch %28
%28 = OpLabel
OpBranch %22
%25 = OpLabel
OpBranch %20
; merge block
%23 = OpLabel
OpBranch %26
%26 = OpLabel
OpReturn
OpFunctionEnd
)";
ASSERT_TRUE(IsEqual(env, after_transformation, context.get()));
}
} // namespace
} // namespace fuzz
} // namespace spvtools
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