mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-10-18 19:20:05 +00:00
8d4261bc44
Some transformations (e.g. TransformationAddFunction) rely on running the validator to decide whether the transformation is applicable. A recent change allowed spirv-fuzz to take validator options, to cater for the case where a module should be considered valid under particular conditions. However, validation during the checking of transformations had no access to these validator options. This change introduced TransformationContext, which currently consists of a fact manager and a set of validator options, but could in the future have other fields corresponding to other objects that it is useful to have access to when applying transformations. Now, instead of checking and applying transformations in the context of a FactManager, a TransformationContext is used. This gives access to the fact manager as before, and also access to the validator options when they are needed.
465 lines
18 KiB
C++
465 lines
18 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_function_call.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(TransformationFunctionCallTest, 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 = OpTypePointer Function %6
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%8 = OpTypeFunction %6 %7
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%12 = OpTypeFloat 32
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%13 = OpTypePointer Function %12
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%14 = OpTypeFunction %6 %7 %13
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%27 = OpConstant %6 1
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%50 = OpConstant %12 1
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%57 = OpTypeBool
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%58 = OpConstantFalse %57
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%204 = OpUndef %6
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%61 = OpVariable %7 Function
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%62 = OpVariable %7 Function
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%65 = OpVariable %13 Function
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%66 = OpVariable %7 Function
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%68 = OpVariable %13 Function
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%71 = OpVariable %7 Function
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%72 = OpVariable %13 Function
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%73 = OpVariable %7 Function
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%75 = OpVariable %13 Function
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%78 = OpVariable %7 Function
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%98 = OpAccessChain %7 %71
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%99 = OpCopyObject %7 %71
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OpSelectionMerge %60 None
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OpBranchConditional %58 %59 %60
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%59 = OpLabel
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OpBranch %60
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%60 = OpLabel
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OpReturn
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OpFunctionEnd
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%10 = OpFunction %6 None %8
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%9 = OpFunctionParameter %7
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%11 = OpLabel
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%26 = OpLoad %6 %9
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%28 = OpIAdd %6 %26 %27
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OpSelectionMerge %97 None
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OpBranchConditional %58 %96 %97
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%96 = OpLabel
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OpBranch %97
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%97 = OpLabel
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OpReturnValue %28
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OpFunctionEnd
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%17 = OpFunction %6 None %14
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%15 = OpFunctionParameter %7
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%16 = OpFunctionParameter %13
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%18 = OpLabel
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%31 = OpVariable %7 Function
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%32 = OpLoad %6 %15
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OpStore %31 %32
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%33 = OpFunctionCall %6 %10 %31
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OpReturnValue %33
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OpFunctionEnd
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%21 = OpFunction %6 None %14
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%19 = OpFunctionParameter %7
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%20 = OpFunctionParameter %13
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%22 = OpLabel
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%36 = OpLoad %6 %19
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%37 = OpLoad %12 %20
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%38 = OpConvertFToS %6 %37
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%39 = OpIAdd %6 %36 %38
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OpReturnValue %39
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OpFunctionEnd
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%24 = OpFunction %6 None %8
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%23 = OpFunctionParameter %7
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%25 = OpLabel
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%44 = OpVariable %7 Function
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%46 = OpVariable %13 Function
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%51 = OpVariable %7 Function
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%52 = OpVariable %13 Function
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%42 = OpLoad %6 %23
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%43 = OpConvertSToF %12 %42
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%45 = OpLoad %6 %23
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OpStore %44 %45
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OpStore %46 %43
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%47 = OpFunctionCall %6 %17 %44 %46
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%48 = OpLoad %6 %23
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%49 = OpIAdd %6 %48 %27
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OpStore %51 %49
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OpStore %52 %50
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%53 = OpFunctionCall %6 %17 %51 %52
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%54 = OpIAdd %6 %47 %53
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OpReturnValue %54
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OpFunctionEnd
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%200 = OpFunction %6 None %14
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%201 = OpFunctionParameter %7
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%202 = OpFunctionParameter %13
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%203 = OpLabel
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OpSelectionMerge %206 None
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OpBranchConditional %58 %205 %206
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%205 = OpLabel
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OpBranch %206
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%206 = OpLabel
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OpReturnValue %204
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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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spvtools::ValidatorOptions validator_options;
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TransformationContext transformation_context(&fact_manager,
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validator_options);
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transformation_context.GetFactManager()->AddFactBlockIsDead(59);
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transformation_context.GetFactManager()->AddFactBlockIsDead(11);
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transformation_context.GetFactManager()->AddFactBlockIsDead(18);
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transformation_context.GetFactManager()->AddFactBlockIsDead(25);
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transformation_context.GetFactManager()->AddFactBlockIsDead(96);
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transformation_context.GetFactManager()->AddFactBlockIsDead(205);
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transformation_context.GetFactManager()->AddFactFunctionIsLivesafe(21);
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transformation_context.GetFactManager()->AddFactFunctionIsLivesafe(200);
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transformation_context.GetFactManager()->AddFactValueOfPointeeIsIrrelevant(
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71);
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transformation_context.GetFactManager()->AddFactValueOfPointeeIsIrrelevant(
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72);
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transformation_context.GetFactManager()->AddFactValueOfPointeeIsIrrelevant(
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19);
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transformation_context.GetFactManager()->AddFactValueOfPointeeIsIrrelevant(
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20);
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transformation_context.GetFactManager()->AddFactValueOfPointeeIsIrrelevant(
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23);
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transformation_context.GetFactManager()->AddFactValueOfPointeeIsIrrelevant(
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44);
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transformation_context.GetFactManager()->AddFactValueOfPointeeIsIrrelevant(
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46);
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transformation_context.GetFactManager()->AddFactValueOfPointeeIsIrrelevant(
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51);
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transformation_context.GetFactManager()->AddFactValueOfPointeeIsIrrelevant(
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52);
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// Livesafe functions with argument types: 21(7, 13), 200(7, 13)
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// Non-livesafe functions with argument types: 4(), 10(7), 17(7, 13), 24(7)
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// Call graph edges:
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// 17 -> 10
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// 24 -> 17
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// Bad transformations
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// Too many arguments
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ASSERT_FALSE(
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TransformationFunctionCall(100, 21, {71, 72, 71},
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MakeInstructionDescriptor(59, SpvOpBranch, 0))
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.IsApplicable(context.get(), transformation_context));
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// Too few arguments
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ASSERT_FALSE(TransformationFunctionCall(
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100, 21, {71}, MakeInstructionDescriptor(59, SpvOpBranch, 0))
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.IsApplicable(context.get(), transformation_context));
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// Arguments are the wrong way around (types do not match)
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ASSERT_FALSE(
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TransformationFunctionCall(100, 21, {72, 71},
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MakeInstructionDescriptor(59, SpvOpBranch, 0))
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.IsApplicable(context.get(), transformation_context));
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// 21 is not an appropriate argument
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ASSERT_FALSE(
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TransformationFunctionCall(100, 21, {21, 72},
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MakeInstructionDescriptor(59, SpvOpBranch, 0))
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.IsApplicable(context.get(), transformation_context));
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// 300 does not exist
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ASSERT_FALSE(
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TransformationFunctionCall(100, 21, {300, 72},
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MakeInstructionDescriptor(59, SpvOpBranch, 0))
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.IsApplicable(context.get(), transformation_context));
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// 71 is not a function
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ASSERT_FALSE(
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TransformationFunctionCall(100, 71, {71, 72},
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MakeInstructionDescriptor(59, SpvOpBranch, 0))
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.IsApplicable(context.get(), transformation_context));
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// 500 does not exist
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ASSERT_FALSE(
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TransformationFunctionCall(100, 500, {71, 72},
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MakeInstructionDescriptor(59, SpvOpBranch, 0))
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.IsApplicable(context.get(), transformation_context));
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// Id is not fresh
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ASSERT_FALSE(
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TransformationFunctionCall(21, 21, {71, 72},
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MakeInstructionDescriptor(59, SpvOpBranch, 0))
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.IsApplicable(context.get(), transformation_context));
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// Access chain as pointer parameter
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ASSERT_FALSE(
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TransformationFunctionCall(100, 21, {98, 72},
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MakeInstructionDescriptor(59, SpvOpBranch, 0))
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.IsApplicable(context.get(), transformation_context));
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// Copied object as pointer parameter
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ASSERT_FALSE(
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TransformationFunctionCall(100, 21, {99, 72},
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MakeInstructionDescriptor(59, SpvOpBranch, 0))
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.IsApplicable(context.get(), transformation_context));
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// Non-livesafe called from original live block
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ASSERT_FALSE(
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TransformationFunctionCall(
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100, 10, {71}, MakeInstructionDescriptor(99, SpvOpSelectionMerge, 0))
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.IsApplicable(context.get(), transformation_context));
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// Non-livesafe called from livesafe function
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ASSERT_FALSE(
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TransformationFunctionCall(
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100, 10, {19}, MakeInstructionDescriptor(38, SpvOpConvertFToS, 0))
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.IsApplicable(context.get(), transformation_context));
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// Livesafe function called with pointer to non-arbitrary local variable
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ASSERT_FALSE(
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TransformationFunctionCall(
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100, 21, {61, 72}, MakeInstructionDescriptor(38, SpvOpConvertFToS, 0))
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.IsApplicable(context.get(), transformation_context));
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// Direct recursion
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ASSERT_FALSE(TransformationFunctionCall(
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100, 4, {}, MakeInstructionDescriptor(59, SpvOpBranch, 0))
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.IsApplicable(context.get(), transformation_context));
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// Indirect recursion
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ASSERT_FALSE(TransformationFunctionCall(
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100, 24, {9}, MakeInstructionDescriptor(96, SpvOpBranch, 0))
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.IsApplicable(context.get(), transformation_context));
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// Parameter 23 is not available at the call site
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ASSERT_FALSE(
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TransformationFunctionCall(104, 10, {23},
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MakeInstructionDescriptor(205, SpvOpBranch, 0))
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.IsApplicable(context.get(), transformation_context));
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// Good transformations
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{
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// Livesafe called from dead block: fine
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TransformationFunctionCall transformation(
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100, 21, {71, 72}, MakeInstructionDescriptor(59, SpvOpBranch, 0));
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ASSERT_TRUE(
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transformation.IsApplicable(context.get(), transformation_context));
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transformation.Apply(context.get(), &transformation_context);
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ASSERT_TRUE(IsValid(env, context.get()));
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}
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{
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// Livesafe called from original live block: fine
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TransformationFunctionCall transformation(
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101, 21, {71, 72}, MakeInstructionDescriptor(98, SpvOpAccessChain, 0));
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ASSERT_TRUE(
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transformation.IsApplicable(context.get(), transformation_context));
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transformation.Apply(context.get(), &transformation_context);
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ASSERT_TRUE(IsValid(env, context.get()));
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}
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{
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// Livesafe called from livesafe function: fine
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TransformationFunctionCall transformation(
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102, 200, {19, 20}, MakeInstructionDescriptor(36, SpvOpLoad, 0));
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ASSERT_TRUE(
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transformation.IsApplicable(context.get(), transformation_context));
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transformation.Apply(context.get(), &transformation_context);
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ASSERT_TRUE(IsValid(env, context.get()));
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}
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{
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// Dead called from dead block in injected function: fine
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TransformationFunctionCall transformation(
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103, 10, {23}, MakeInstructionDescriptor(45, SpvOpLoad, 0));
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ASSERT_TRUE(
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transformation.IsApplicable(context.get(), transformation_context));
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transformation.Apply(context.get(), &transformation_context);
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ASSERT_TRUE(IsValid(env, context.get()));
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}
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{
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// Non-livesafe called from dead block in livesafe function: OK
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TransformationFunctionCall transformation(
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104, 10, {201}, MakeInstructionDescriptor(205, SpvOpBranch, 0));
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ASSERT_TRUE(
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transformation.IsApplicable(context.get(), transformation_context));
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transformation.Apply(context.get(), &transformation_context);
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ASSERT_TRUE(IsValid(env, context.get()));
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}
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{
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// Livesafe called from dead block with non-arbitrary parameter
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TransformationFunctionCall transformation(
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105, 21, {62, 65}, MakeInstructionDescriptor(59, SpvOpBranch, 0));
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ASSERT_TRUE(
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transformation.IsApplicable(context.get(), transformation_context));
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transformation.Apply(context.get(), &transformation_context);
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ASSERT_TRUE(IsValid(env, context.get()));
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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 = OpTypePointer Function %6
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%8 = OpTypeFunction %6 %7
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%12 = OpTypeFloat 32
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%13 = OpTypePointer Function %12
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%14 = OpTypeFunction %6 %7 %13
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%27 = OpConstant %6 1
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%50 = OpConstant %12 1
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%57 = OpTypeBool
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%58 = OpConstantFalse %57
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%204 = OpUndef %6
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%61 = OpVariable %7 Function
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%62 = OpVariable %7 Function
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%65 = OpVariable %13 Function
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%66 = OpVariable %7 Function
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%68 = OpVariable %13 Function
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%71 = OpVariable %7 Function
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%72 = OpVariable %13 Function
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%73 = OpVariable %7 Function
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%75 = OpVariable %13 Function
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%78 = OpVariable %7 Function
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%101 = OpFunctionCall %6 %21 %71 %72
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%98 = OpAccessChain %7 %71
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%99 = OpCopyObject %7 %71
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OpSelectionMerge %60 None
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OpBranchConditional %58 %59 %60
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%59 = OpLabel
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%100 = OpFunctionCall %6 %21 %71 %72
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%105 = OpFunctionCall %6 %21 %62 %65
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OpBranch %60
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%60 = OpLabel
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OpReturn
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OpFunctionEnd
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%10 = OpFunction %6 None %8
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%9 = OpFunctionParameter %7
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%11 = OpLabel
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%26 = OpLoad %6 %9
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%28 = OpIAdd %6 %26 %27
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OpSelectionMerge %97 None
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OpBranchConditional %58 %96 %97
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%96 = OpLabel
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OpBranch %97
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%97 = OpLabel
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OpReturnValue %28
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OpFunctionEnd
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%17 = OpFunction %6 None %14
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%15 = OpFunctionParameter %7
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%16 = OpFunctionParameter %13
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%18 = OpLabel
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%31 = OpVariable %7 Function
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%32 = OpLoad %6 %15
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OpStore %31 %32
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%33 = OpFunctionCall %6 %10 %31
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OpReturnValue %33
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OpFunctionEnd
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%21 = OpFunction %6 None %14
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%19 = OpFunctionParameter %7
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%20 = OpFunctionParameter %13
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%22 = OpLabel
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%102 = OpFunctionCall %6 %200 %19 %20
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%36 = OpLoad %6 %19
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%37 = OpLoad %12 %20
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%38 = OpConvertFToS %6 %37
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%39 = OpIAdd %6 %36 %38
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OpReturnValue %39
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OpFunctionEnd
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%24 = OpFunction %6 None %8
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%23 = OpFunctionParameter %7
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%25 = OpLabel
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%44 = OpVariable %7 Function
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%46 = OpVariable %13 Function
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%51 = OpVariable %7 Function
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%52 = OpVariable %13 Function
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%42 = OpLoad %6 %23
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%43 = OpConvertSToF %12 %42
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%103 = OpFunctionCall %6 %10 %23
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%45 = OpLoad %6 %23
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OpStore %44 %45
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OpStore %46 %43
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%47 = OpFunctionCall %6 %17 %44 %46
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%48 = OpLoad %6 %23
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%49 = OpIAdd %6 %48 %27
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OpStore %51 %49
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OpStore %52 %50
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%53 = OpFunctionCall %6 %17 %51 %52
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%54 = OpIAdd %6 %47 %53
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OpReturnValue %54
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OpFunctionEnd
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%200 = OpFunction %6 None %14
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%201 = OpFunctionParameter %7
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%202 = OpFunctionParameter %13
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%203 = OpLabel
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OpSelectionMerge %206 None
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OpBranchConditional %58 %205 %206
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%205 = OpLabel
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%104 = OpFunctionCall %6 %10 %201
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OpBranch %206
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%206 = OpLabel
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OpReturnValue %204
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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(TransformationFunctionCallTest, DoNotInvokeEntryPoint) {
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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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%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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%10 = OpFunction %2 None %3
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%11 = 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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spvtools::ValidatorOptions validator_options;
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TransformationContext transformation_context(&fact_manager,
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validator_options);
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transformation_context.GetFactManager()->AddFactBlockIsDead(11);
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// 4 is an entry point, so it is not legal for it to be the target of a call.
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ASSERT_FALSE(TransformationFunctionCall(
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100, 4, {}, MakeInstructionDescriptor(11, SpvOpReturn, 0))
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.IsApplicable(context.get(), transformation_context));
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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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