mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-11-30 15:00:06 +00:00
323 lines
12 KiB
C++
323 lines
12 KiB
C++
// Copyright (c) 2020 Vasyl Teliman
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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_mutate_pointer.h"
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#include "gtest/gtest.h"
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#include "source/fuzz/fuzzer_util.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(TransformationMutatePointerTest, BasicTest) {
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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"
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OpExecutionMode %4 OriginUpperLeft
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OpSource ESSL 310
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%2 = OpTypeVoid
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%3 = OpTypeFunction %2
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%6 = OpTypeInt 32 1
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%7 = OpTypeFloat 32
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%34 = OpConstant %7 0
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%36 = OpConstant %6 0
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%14 = OpTypeVector %7 3
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%35 = OpConstantComposite %14 %34 %34 %34
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%15 = OpTypeMatrix %14 2
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%8 = OpConstant %6 5
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%9 = OpTypeArray %7 %8
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%37 = OpConstantComposite %9 %34 %34 %34 %34 %34
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%11 = OpTypeStruct
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%38 = OpConstantComposite %11
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%39 = OpConstantComposite %15 %35 %35
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%31 = OpTypePointer Function %14
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%10 = OpTypeStruct %7 %6 %9 %11 %15 %14
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%40 = OpConstantComposite %10 %34 %36 %37 %38 %39 %35
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%13 = OpTypePointer Function %10
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%16 = OpTypePointer Private %10
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%17 = OpTypePointer Workgroup %10
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%18 = OpTypeStruct %16
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%19 = OpTypePointer Private %18
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%20 = OpVariable %16 Private
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%21 = OpVariable %17 Workgroup
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%22 = OpVariable %19 Private
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%23 = OpTypePointer Output %6
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%24 = OpVariable %23 Output
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%27 = OpTypeFunction %2 %13
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%32 = OpUndef %16
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%33 = OpConstantNull %16
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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OpReturn
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OpFunctionEnd
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%28 = OpFunction %2 None %27
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%29 = OpFunctionParameter %13
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%30 = OpLabel
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%25 = OpVariable %13 Function
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%26 = OpAccessChain %31 %25 %8
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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_3;
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const auto consumer = nullptr;
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const auto context = BuildModule(env, consumer, shader, kFuzzAssembleOption);
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spvtools::ValidatorOptions validator_options;
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ASSERT_TRUE(fuzzerutil::IsValidAndWellFormed(context.get(), validator_options,
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kConsoleMessageConsumer));
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TransformationContext transformation_context(
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MakeUnique<FactManager>(context.get()), validator_options);
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transformation_context.GetFactManager()->AddFactIdIsIrrelevant(35);
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transformation_context.GetFactManager()->AddFactIdIsIrrelevant(39);
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const auto insert_before = MakeInstructionDescriptor(26, SpvOpReturn, 0);
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// 20 is not a fresh id.
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ASSERT_FALSE(TransformationMutatePointer(20, 20, insert_before)
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.IsApplicable(context.get(), transformation_context));
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// |insert_before| instruction descriptor is invalid.
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ASSERT_FALSE(TransformationMutatePointer(
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20, 70, MakeInstructionDescriptor(26, SpvOpStore, 0))
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.IsApplicable(context.get(), transformation_context));
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// Can't insert OpLoad before OpVariable.
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ASSERT_FALSE(TransformationMutatePointer(
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20, 70, MakeInstructionDescriptor(26, SpvOpVariable, 0))
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.IsApplicable(context.get(), transformation_context));
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// |pointer_id| doesn't exist in the module.
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ASSERT_FALSE(TransformationMutatePointer(70, 70, insert_before)
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.IsApplicable(context.get(), transformation_context));
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// |pointer_id| doesn't have a type id.
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ASSERT_FALSE(TransformationMutatePointer(11, 70, insert_before)
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.IsApplicable(context.get(), transformation_context));
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// |pointer_id| is a result id of OpUndef.
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ASSERT_FALSE(TransformationMutatePointer(32, 70, insert_before)
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.IsApplicable(context.get(), transformation_context));
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// |pointer_id| is a result id of OpConstantNull.
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ASSERT_FALSE(TransformationMutatePointer(33, 70, insert_before)
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.IsApplicable(context.get(), transformation_context));
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// |pointer_id| is not a pointer instruction.
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ASSERT_FALSE(TransformationMutatePointer(8, 70, insert_before)
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.IsApplicable(context.get(), transformation_context));
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// |pointer_id| has invalid storage class
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ASSERT_FALSE(TransformationMutatePointer(24, 70, insert_before)
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.IsApplicable(context.get(), transformation_context));
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// |pointer_id|'s pointee contains non-scalar and non-composite constituents.
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ASSERT_FALSE(TransformationMutatePointer(22, 70, insert_before)
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.IsApplicable(context.get(), transformation_context));
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// There is no irrelevant zero constant to insert into the |pointer_id|.
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ASSERT_FALSE(TransformationMutatePointer(20, 70, insert_before)
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.IsApplicable(context.get(), transformation_context));
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// |pointer_id| is not available before |insert_before|.
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ASSERT_FALSE(TransformationMutatePointer(
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26, 70, MakeInstructionDescriptor(26, SpvOpAccessChain, 0))
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.IsApplicable(context.get(), transformation_context));
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transformation_context.GetFactManager()->AddFactIdIsIrrelevant(40);
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uint32_t fresh_id = 70;
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uint32_t pointer_ids[] = {
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20, // Mutate Private variable.
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21, // Mutate Workgroup variable.
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25, // Mutate Function variable.
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29, // Mutate function parameter.
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26, // Mutate OpAccessChain.
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};
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for (auto pointer_id : pointer_ids) {
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TransformationMutatePointer transformation(pointer_id, fresh_id++,
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insert_before);
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ASSERT_TRUE(
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transformation.IsApplicable(context.get(), transformation_context));
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ApplyAndCheckFreshIds(transformation, context.get(),
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&transformation_context);
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ASSERT_TRUE(fuzzerutil::IsValidAndWellFormed(
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context.get(), validator_options, kConsoleMessageConsumer));
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}
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std::string after_transformation = 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"
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OpExecutionMode %4 OriginUpperLeft
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OpSource ESSL 310
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%2 = OpTypeVoid
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%3 = OpTypeFunction %2
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%6 = OpTypeInt 32 1
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%7 = OpTypeFloat 32
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%34 = OpConstant %7 0
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%36 = OpConstant %6 0
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%14 = OpTypeVector %7 3
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%35 = OpConstantComposite %14 %34 %34 %34
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%15 = OpTypeMatrix %14 2
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%8 = OpConstant %6 5
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%9 = OpTypeArray %7 %8
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%37 = OpConstantComposite %9 %34 %34 %34 %34 %34
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%11 = OpTypeStruct
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%38 = OpConstantComposite %11
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%39 = OpConstantComposite %15 %35 %35
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%31 = OpTypePointer Function %14
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%10 = OpTypeStruct %7 %6 %9 %11 %15 %14
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%40 = OpConstantComposite %10 %34 %36 %37 %38 %39 %35
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%13 = OpTypePointer Function %10
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%16 = OpTypePointer Private %10
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%17 = OpTypePointer Workgroup %10
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%18 = OpTypeStruct %16
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%19 = OpTypePointer Private %18
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%20 = OpVariable %16 Private
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%21 = OpVariable %17 Workgroup
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%22 = OpVariable %19 Private
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%23 = OpTypePointer Output %6
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%24 = OpVariable %23 Output
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%27 = OpTypeFunction %2 %13
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%32 = OpUndef %16
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%33 = OpConstantNull %16
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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OpReturn
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OpFunctionEnd
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%28 = OpFunction %2 None %27
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%29 = OpFunctionParameter %13
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%30 = OpLabel
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%25 = OpVariable %13 Function
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%26 = OpAccessChain %31 %25 %8
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; modified Private variable
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%70 = OpLoad %10 %20
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OpStore %20 %40
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OpStore %20 %70
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; modified Workgroup variable
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%71 = OpLoad %10 %21
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OpStore %21 %40
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OpStore %21 %71
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; modified Function variable
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%72 = OpLoad %10 %25
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OpStore %25 %40
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OpStore %25 %72
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; modified function parameter
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%73 = OpLoad %10 %29
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OpStore %29 %40
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OpStore %29 %73
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; modified OpAccessChain
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%74 = OpLoad %14 %26
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OpStore %26 %35
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OpStore %26 %74
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OpReturn
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OpFunctionEnd
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)";
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ASSERT_TRUE(IsEqual(env, after_transformation, context.get()));
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}
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TEST(TransformationMutatePointerTest, HandlesUnreachableBlocks) {
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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"
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OpExecutionMode %4 OriginUpperLeft
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OpSource ESSL 310
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%2 = OpTypeVoid
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%3 = OpTypeFunction %2
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%6 = OpTypeInt 32 1
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%7 = OpConstant %6 0
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%8 = OpTypePointer Function %6
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%11 = OpTypePointer Private %6
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%12 = OpVariable %11 Private
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%9 = OpVariable %8 Function
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OpReturn
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%10 = 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_3;
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const auto consumer = nullptr;
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const auto context = BuildModule(env, consumer, shader, kFuzzAssembleOption);
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spvtools::ValidatorOptions validator_options;
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ASSERT_TRUE(fuzzerutil::IsValidAndWellFormed(context.get(), validator_options,
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kConsoleMessageConsumer));
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TransformationContext transformation_context(
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MakeUnique<FactManager>(context.get()), validator_options);
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transformation_context.GetFactManager()->AddFactIdIsIrrelevant(7);
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ASSERT_FALSE(
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context->GetDominatorAnalysis(context->GetFunction(4))->IsReachable(10));
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const auto insert_before = MakeInstructionDescriptor(10, SpvOpReturn, 0);
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// Can mutate a global variable in an unreachable block.
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TransformationMutatePointer transformation(12, 50, insert_before);
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ASSERT_TRUE(
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transformation.IsApplicable(context.get(), transformation_context));
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ApplyAndCheckFreshIds(transformation, context.get(), &transformation_context);
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ASSERT_TRUE(fuzzerutil::IsValidAndWellFormed(context.get(), validator_options,
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kConsoleMessageConsumer));
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std::string after_transformation = 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"
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OpExecutionMode %4 OriginUpperLeft
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OpSource ESSL 310
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%2 = OpTypeVoid
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%3 = OpTypeFunction %2
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%6 = OpTypeInt 32 1
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%7 = OpConstant %6 0
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%8 = OpTypePointer Function %6
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%11 = OpTypePointer Private %6
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%12 = OpVariable %11 Private
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%9 = OpVariable %8 Function
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OpReturn
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%10 = OpLabel
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%50 = OpLoad %6 %12
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OpStore %12 %7
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OpStore %12 %50
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OpReturn
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OpFunctionEnd
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)";
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ASSERT_TRUE(IsEqual(env, after_transformation, 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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