mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-10-19 11:30:15 +00:00
fe10239f92
This change adds fuzzer passes that sprinkle loads and stores into a module at random, with stores restricted to occur in either dead blocks, or to use pointers for which it is known that the pointee value does not influence the module's overall behaviour. The change also generalises the VariableValueIsArbitrary fact to PointeeValueIsIrrelevant, to allow stores through access chains or object copies of variables whose values are known to be irrelevant. The change includes some other minor refactorings.
207 lines
7.5 KiB
C++
207 lines
7.5 KiB
C++
// Copyright (c) 2020 Google LLC
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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_add_local_variable.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(TransformationAddLocalVariableTest, 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 = OpTypeStruct %6 %6
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%8 = OpTypePointer Function %7
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%10 = OpConstant %6 1
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%11 = OpConstant %6 2
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%12 = OpConstantComposite %7 %10 %11
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%13 = OpTypeFloat 32
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%14 = OpTypeInt 32 0
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%15 = OpConstant %14 3
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%16 = OpTypeArray %13 %15
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%17 = OpTypeBool
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%18 = OpTypeStruct %16 %7 %17
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%19 = OpTypePointer Function %18
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%21 = OpConstant %13 1
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%22 = OpConstant %13 2
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%23 = OpConstant %13 4
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%24 = OpConstantComposite %16 %21 %22 %23
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%25 = OpConstant %6 5
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%26 = OpConstant %6 6
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%27 = OpConstantComposite %7 %25 %26
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%28 = OpConstantFalse %17
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%29 = OpConstantComposite %18 %24 %27 %28
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%30 = OpTypeVector %13 2
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%31 = OpTypePointer Function %30
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%33 = OpConstantComposite %30 %21 %21
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%34 = OpTypeVector %17 3
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%35 = OpTypePointer Function %34
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%37 = OpConstantTrue %17
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%38 = OpConstantComposite %34 %37 %28 %28
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%39 = OpTypeVector %13 4
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%40 = OpTypeMatrix %39 3
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%41 = OpTypePointer Function %40
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%43 = OpConstantComposite %39 %21 %22 %23 %21
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%44 = OpConstantComposite %39 %22 %23 %21 %22
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%45 = OpConstantComposite %39 %23 %21 %22 %23
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%46 = OpConstantComposite %40 %43 %44 %45
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%50 = OpTypePointer Function %14
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%51 = OpConstantNull %14
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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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)";
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const auto env = SPV_ENV_UNIVERSAL_1_4;
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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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FactManager fact_manager;
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// A few cases of inapplicable transformations:
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// Id 4 is already in use
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ASSERT_FALSE(TransformationAddLocalVariable(4, 50, 4, 51, true)
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.IsApplicable(context.get(), fact_manager));
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// Type mismatch between initializer and pointer
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ASSERT_FALSE(TransformationAddLocalVariable(105, 46, 4, 51, true)
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.IsApplicable(context.get(), fact_manager));
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// Id 5 is not a function
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ASSERT_FALSE(TransformationAddLocalVariable(105, 50, 5, 51, true)
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.IsApplicable(context.get(), fact_manager));
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// %105 = OpVariable %50 Function %51
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{
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TransformationAddLocalVariable transformation(105, 50, 4, 51, true);
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ASSERT_TRUE(transformation.IsApplicable(context.get(), fact_manager));
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transformation.Apply(context.get(), &fact_manager);
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}
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// %104 = OpVariable %41 Function %46
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{
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TransformationAddLocalVariable transformation(104, 41, 4, 46, false);
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ASSERT_TRUE(transformation.IsApplicable(context.get(), fact_manager));
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transformation.Apply(context.get(), &fact_manager);
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}
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// %103 = OpVariable %35 Function %38
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{
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TransformationAddLocalVariable transformation(103, 35, 4, 38, true);
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ASSERT_TRUE(transformation.IsApplicable(context.get(), fact_manager));
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transformation.Apply(context.get(), &fact_manager);
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}
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// %102 = OpVariable %31 Function %33
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{
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TransformationAddLocalVariable transformation(102, 31, 4, 33, false);
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ASSERT_TRUE(transformation.IsApplicable(context.get(), fact_manager));
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transformation.Apply(context.get(), &fact_manager);
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}
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// %101 = OpVariable %19 Function %29
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{
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TransformationAddLocalVariable transformation(101, 19, 4, 29, true);
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ASSERT_TRUE(transformation.IsApplicable(context.get(), fact_manager));
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transformation.Apply(context.get(), &fact_manager);
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}
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// %100 = OpVariable %8 Function %12
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{
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TransformationAddLocalVariable transformation(100, 8, 4, 12, false);
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ASSERT_TRUE(transformation.IsApplicable(context.get(), fact_manager));
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transformation.Apply(context.get(), &fact_manager);
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}
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ASSERT_FALSE(fact_manager.PointeeValueIsIrrelevant(100));
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ASSERT_TRUE(fact_manager.PointeeValueIsIrrelevant(101));
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ASSERT_FALSE(fact_manager.PointeeValueIsIrrelevant(102));
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ASSERT_TRUE(fact_manager.PointeeValueIsIrrelevant(103));
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ASSERT_FALSE(fact_manager.PointeeValueIsIrrelevant(104));
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ASSERT_TRUE(fact_manager.PointeeValueIsIrrelevant(105));
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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 = OpTypeStruct %6 %6
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%8 = OpTypePointer Function %7
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%10 = OpConstant %6 1
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%11 = OpConstant %6 2
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%12 = OpConstantComposite %7 %10 %11
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%13 = OpTypeFloat 32
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%14 = OpTypeInt 32 0
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%15 = OpConstant %14 3
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%16 = OpTypeArray %13 %15
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%17 = OpTypeBool
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%18 = OpTypeStruct %16 %7 %17
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%19 = OpTypePointer Function %18
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%21 = OpConstant %13 1
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%22 = OpConstant %13 2
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%23 = OpConstant %13 4
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%24 = OpConstantComposite %16 %21 %22 %23
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%25 = OpConstant %6 5
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%26 = OpConstant %6 6
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%27 = OpConstantComposite %7 %25 %26
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%28 = OpConstantFalse %17
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%29 = OpConstantComposite %18 %24 %27 %28
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%30 = OpTypeVector %13 2
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%31 = OpTypePointer Function %30
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%33 = OpConstantComposite %30 %21 %21
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%34 = OpTypeVector %17 3
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%35 = OpTypePointer Function %34
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%37 = OpConstantTrue %17
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%38 = OpConstantComposite %34 %37 %28 %28
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%39 = OpTypeVector %13 4
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%40 = OpTypeMatrix %39 3
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%41 = OpTypePointer Function %40
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%43 = OpConstantComposite %39 %21 %22 %23 %21
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%44 = OpConstantComposite %39 %22 %23 %21 %22
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%45 = OpConstantComposite %39 %23 %21 %22 %23
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%46 = OpConstantComposite %40 %43 %44 %45
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%50 = OpTypePointer Function %14
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%51 = OpConstantNull %14
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%100 = OpVariable %8 Function %12
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%101 = OpVariable %19 Function %29
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%102 = OpVariable %31 Function %33
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%103 = OpVariable %35 Function %38
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%104 = OpVariable %41 Function %46
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%105 = OpVariable %50 Function %51
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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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