mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-10-19 19:40:13 +00:00
3d4a0dd48f
This change ensures that global and local variables donated from other modules are always initialized at their declaration in the module being transformed. This is to help limit issues related to undefined behaviour that might arise due to accessing uninitialized memory. The change also introduces some helper functions in fuzzer_util to make it easier to find the pointee types of pointer types.
290 lines
11 KiB
C++
290 lines
11 KiB
C++
// Copyright (c) 2019 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_global_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(TransformationAddGlobalVariableTest, 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 = OpTypeFloat 32
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%40 = OpConstant %6 0
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%7 = OpTypeInt 32 1
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%8 = OpTypeVector %6 2
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%41 = OpConstantComposite %8 %40 %40
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%9 = OpTypePointer Function %6
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%10 = OpTypePointer Private %6
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%20 = OpTypePointer Uniform %6
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%11 = OpTypePointer Function %7
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%12 = OpTypePointer Private %7
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%13 = OpTypePointer Private %8
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%14 = OpVariable %10 Private
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%15 = OpVariable %20 Uniform
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%16 = OpConstant %7 1
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%17 = OpTypePointer Private %10
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%18 = OpTypeBool
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%19 = OpTypePointer Private %18
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%21 = OpConstantTrue %18
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%22 = OpConstantFalse %18
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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_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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ASSERT_TRUE(IsValid(env, context.get()));
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FactManager fact_manager;
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// Id already in use
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ASSERT_FALSE(TransformationAddGlobalVariable(4, 10, 0, true)
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.IsApplicable(context.get(), fact_manager));
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// %1 is not a type
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ASSERT_FALSE(TransformationAddGlobalVariable(100, 1, 0, false)
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.IsApplicable(context.get(), fact_manager));
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// %7 is not a pointer type
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ASSERT_FALSE(TransformationAddGlobalVariable(100, 7, 0, true)
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.IsApplicable(context.get(), fact_manager));
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// %9 does not have Private storage class
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ASSERT_FALSE(TransformationAddGlobalVariable(100, 9, 0, false)
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.IsApplicable(context.get(), fact_manager));
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// %15 does not have Private storage class
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ASSERT_FALSE(TransformationAddGlobalVariable(100, 15, 0, true)
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.IsApplicable(context.get(), fact_manager));
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// %10 is a pointer to float, while %16 is an int constant
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ASSERT_FALSE(TransformationAddGlobalVariable(100, 10, 16, false)
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.IsApplicable(context.get(), fact_manager));
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// %10 is a Private pointer to float, while %15 is a variable with type
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// Uniform float pointer
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ASSERT_FALSE(TransformationAddGlobalVariable(100, 10, 15, true)
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.IsApplicable(context.get(), fact_manager));
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// %12 is a Private pointer to int, while %10 is a variable with type
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// Private float pointer
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ASSERT_FALSE(TransformationAddGlobalVariable(100, 12, 10, false)
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.IsApplicable(context.get(), fact_manager));
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// %10 is pointer-to-float, and %14 has type pointer-to-float; that's not OK
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// since the initializer's type should be the *pointee* type.
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ASSERT_FALSE(TransformationAddGlobalVariable(104, 10, 14, true)
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.IsApplicable(context.get(), fact_manager));
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// This would work in principle, but logical addressing does not allow
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// a pointer to a pointer.
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ASSERT_FALSE(TransformationAddGlobalVariable(104, 17, 14, false)
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.IsApplicable(context.get(), fact_manager));
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TransformationAddGlobalVariable transformations[] = {
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// %100 = OpVariable %12 Private
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TransformationAddGlobalVariable(100, 12, 16, true),
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// %101 = OpVariable %10 Private
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TransformationAddGlobalVariable(101, 10, 40, false),
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// %102 = OpVariable %13 Private
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TransformationAddGlobalVariable(102, 13, 41, true),
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// %103 = OpVariable %12 Private %16
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TransformationAddGlobalVariable(103, 12, 16, false),
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// %104 = OpVariable %19 Private %21
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TransformationAddGlobalVariable(104, 19, 21, true),
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// %105 = OpVariable %19 Private %22
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TransformationAddGlobalVariable(105, 19, 22, false)};
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for (auto& transformation : transformations) {
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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_TRUE(fact_manager.PointeeValueIsIrrelevant(100));
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ASSERT_TRUE(fact_manager.PointeeValueIsIrrelevant(102));
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ASSERT_TRUE(fact_manager.PointeeValueIsIrrelevant(104));
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ASSERT_FALSE(fact_manager.PointeeValueIsIrrelevant(101));
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ASSERT_FALSE(fact_manager.PointeeValueIsIrrelevant(103));
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ASSERT_FALSE(fact_manager.PointeeValueIsIrrelevant(105));
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ASSERT_TRUE(IsValid(env, context.get()));
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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 = OpTypeFloat 32
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%40 = OpConstant %6 0
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%7 = OpTypeInt 32 1
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%8 = OpTypeVector %6 2
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%41 = OpConstantComposite %8 %40 %40
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%9 = OpTypePointer Function %6
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%10 = OpTypePointer Private %6
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%20 = OpTypePointer Uniform %6
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%11 = OpTypePointer Function %7
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%12 = OpTypePointer Private %7
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%13 = OpTypePointer Private %8
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%14 = OpVariable %10 Private
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%15 = OpVariable %20 Uniform
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%16 = OpConstant %7 1
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%17 = OpTypePointer Private %10
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%18 = OpTypeBool
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%19 = OpTypePointer Private %18
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%21 = OpConstantTrue %18
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%22 = OpConstantFalse %18
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%100 = OpVariable %12 Private %16
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%101 = OpVariable %10 Private %40
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%102 = OpVariable %13 Private %41
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%103 = OpVariable %12 Private %16
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%104 = OpVariable %19 Private %21
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%105 = OpVariable %19 Private %22
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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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ASSERT_TRUE(IsEqual(env, after_transformation, context.get()));
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}
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TEST(TransformationAddGlobalVariableTest, TestEntryPointInterfaceEnlargement) {
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// This checks that when global variables are added to a SPIR-V 1.4+ module,
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// they are also added to entry points of that module.
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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 "m1"
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OpEntryPoint Vertex %5 "m2"
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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 = OpTypeFloat 32
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%7 = OpTypeInt 32 1
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%8 = OpTypeVector %6 2
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%9 = OpTypePointer Function %6
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%10 = OpTypePointer Private %6
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%20 = OpTypePointer Uniform %6
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%11 = OpTypePointer Function %7
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%12 = OpTypePointer Private %7
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%13 = OpTypePointer Private %8
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%14 = OpVariable %10 Private
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%15 = OpVariable %20 Uniform
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%16 = OpConstant %7 1
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%17 = OpTypePointer Private %10
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%18 = OpTypeBool
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%19 = OpTypePointer Private %18
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%21 = OpConstantTrue %18
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%4 = OpFunction %2 None %3
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%30 = OpLabel
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OpReturn
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OpFunctionEnd
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%5 = OpFunction %2 None %3
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%31 = 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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TransformationAddGlobalVariable transformations[] = {
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// %100 = OpVariable %12 Private
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TransformationAddGlobalVariable(100, 12, 16, true),
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// %101 = OpVariable %12 Private %16
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TransformationAddGlobalVariable(101, 12, 16, false),
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// %102 = OpVariable %19 Private %21
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TransformationAddGlobalVariable(102, 19, 21, true)};
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for (auto& transformation : transformations) {
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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_TRUE(fact_manager.PointeeValueIsIrrelevant(100));
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ASSERT_TRUE(fact_manager.PointeeValueIsIrrelevant(102));
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ASSERT_FALSE(fact_manager.PointeeValueIsIrrelevant(101));
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ASSERT_TRUE(IsValid(env, context.get()));
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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 "m1" %100 %101 %102
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OpEntryPoint Vertex %5 "m2" %100 %101 %102
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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 = OpTypeFloat 32
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%7 = OpTypeInt 32 1
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%8 = OpTypeVector %6 2
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%9 = OpTypePointer Function %6
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%10 = OpTypePointer Private %6
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%20 = OpTypePointer Uniform %6
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%11 = OpTypePointer Function %7
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%12 = OpTypePointer Private %7
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%13 = OpTypePointer Private %8
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%14 = OpVariable %10 Private
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%15 = OpVariable %20 Uniform
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%16 = OpConstant %7 1
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%17 = OpTypePointer Private %10
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%18 = OpTypeBool
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%19 = OpTypePointer Private %18
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%21 = OpConstantTrue %18
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%100 = OpVariable %12 Private %16
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%101 = OpVariable %12 Private %16
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%102 = OpVariable %19 Private %21
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%4 = OpFunction %2 None %3
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%30 = OpLabel
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OpReturn
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OpFunctionEnd
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%5 = OpFunction %2 None %3
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%31 = OpLabel
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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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