mirror of
https://github.com/KhronosGroup/SPIRV-Tools
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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.
290 lines
10 KiB
C++
290 lines
10 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_load.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(TransformationLoadTest, 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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%8 = OpTypeStruct %6 %7
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%9 = OpTypePointer Function %8
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%10 = OpTypeFunction %6 %9
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%14 = OpConstant %6 0
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%15 = OpTypePointer Function %6
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%51 = OpTypePointer Private %6
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%21 = OpConstant %6 2
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%23 = OpConstant %6 1
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%24 = OpConstant %7 1
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%25 = OpTypePointer Function %7
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%50 = OpTypePointer Private %7
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%34 = OpTypeBool
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%35 = OpConstantFalse %34
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%60 = OpConstantNull %50
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%61 = OpUndef %51
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%52 = OpVariable %50 Private
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%53 = OpVariable %51 Private
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%20 = OpVariable %9 Function
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%27 = OpVariable %9 Function ; irrelevant
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%22 = OpAccessChain %15 %20 %14
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%44 = OpCopyObject %9 %20
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%26 = OpAccessChain %25 %20 %23
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%29 = OpFunctionCall %6 %12 %27
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%30 = OpAccessChain %15 %20 %14
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%45 = OpCopyObject %15 %30
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%33 = OpAccessChain %15 %20 %14
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OpSelectionMerge %37 None
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OpBranchConditional %35 %36 %37
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%36 = OpLabel
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%38 = OpAccessChain %15 %20 %14
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%40 = OpAccessChain %15 %20 %14
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%43 = OpAccessChain %15 %20 %14
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OpBranch %37
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%37 = OpLabel
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OpReturn
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OpFunctionEnd
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%12 = OpFunction %6 None %10
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%11 = OpFunctionParameter %9 ; irrelevant
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%13 = OpLabel
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%46 = OpCopyObject %9 %11 ; irrelevant
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%16 = OpAccessChain %15 %11 %14 ; irrelevant
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OpReturnValue %21
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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()->AddFactValueOfPointeeIsIrrelevant(
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27);
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transformation_context.GetFactManager()->AddFactValueOfPointeeIsIrrelevant(
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11);
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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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16);
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transformation_context.GetFactManager()->AddFactValueOfPointeeIsIrrelevant(
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52);
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transformation_context.GetFactManager()->AddFactBlockIsDead(36);
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// Variables with pointee types:
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// 52 - ptr_to(7)
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// 53 - ptr_to(6)
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// 20 - ptr_to(8)
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// 27 - ptr_to(8) - irrelevant
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// Access chains with pointee type:
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// 22 - ptr_to(6)
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// 26 - ptr_to(6)
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// 30 - ptr_to(6)
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// 33 - ptr_to(6)
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// 38 - ptr_to(6)
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// 40 - ptr_to(6)
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// 43 - ptr_to(6)
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// 16 - ptr_to(6) - irrelevant
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// Copied object with pointee type:
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// 44 - ptr_to(8)
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// 45 - ptr_to(6)
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// 46 - ptr_to(8) - irrelevant
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// Function parameters with pointee type:
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// 11 - ptr_to(8) - irrelevant
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// Pointers that cannot be used:
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// 60 - null
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// 61 - undefined
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// Bad: id is not fresh
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ASSERT_FALSE(TransformationLoad(
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33, 33, MakeInstructionDescriptor(38, SpvOpAccessChain, 0))
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.IsApplicable(context.get(), transformation_context));
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// Bad: attempt to load from 11 from outside its function
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ASSERT_FALSE(TransformationLoad(
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100, 11, MakeInstructionDescriptor(38, SpvOpAccessChain, 0))
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.IsApplicable(context.get(), transformation_context));
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// Bad: pointer is not available
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ASSERT_FALSE(TransformationLoad(
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100, 33, MakeInstructionDescriptor(45, SpvOpCopyObject, 0))
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.IsApplicable(context.get(), transformation_context));
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// Bad: attempt to insert before OpVariable
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ASSERT_FALSE(TransformationLoad(
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100, 27, MakeInstructionDescriptor(27, SpvOpVariable, 0))
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.IsApplicable(context.get(), transformation_context));
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// Bad: pointer id does not exist
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ASSERT_FALSE(
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TransformationLoad(100, 1000,
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MakeInstructionDescriptor(38, SpvOpAccessChain, 0))
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.IsApplicable(context.get(), transformation_context));
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// Bad: pointer id exists but does not have a type
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ASSERT_FALSE(TransformationLoad(
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100, 5, MakeInstructionDescriptor(38, SpvOpAccessChain, 0))
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.IsApplicable(context.get(), transformation_context));
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// Bad: pointer id exists and has a type, but is not a pointer
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ASSERT_FALSE(TransformationLoad(
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100, 24, MakeInstructionDescriptor(38, SpvOpAccessChain, 0))
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.IsApplicable(context.get(), transformation_context));
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// Bad: attempt to load from null pointer
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ASSERT_FALSE(TransformationLoad(
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100, 60, MakeInstructionDescriptor(38, SpvOpAccessChain, 0))
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.IsApplicable(context.get(), transformation_context));
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// Bad: attempt to load from undefined pointer
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ASSERT_FALSE(TransformationLoad(
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100, 61, MakeInstructionDescriptor(38, SpvOpAccessChain, 0))
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.IsApplicable(context.get(), transformation_context));
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// Bad: %40 is not available at the program point
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ASSERT_FALSE(
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TransformationLoad(100, 40, MakeInstructionDescriptor(37, SpvOpReturn, 0))
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.IsApplicable(context.get(), transformation_context));
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// Bad: The described instruction does not exist
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ASSERT_FALSE(TransformationLoad(
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100, 33, MakeInstructionDescriptor(1000, SpvOpReturn, 0))
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.IsApplicable(context.get(), transformation_context));
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{
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TransformationLoad transformation(
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100, 33, MakeInstructionDescriptor(38, 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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TransformationLoad transformation(
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101, 46, MakeInstructionDescriptor(16, SpvOpReturnValue, 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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TransformationLoad transformation(
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102, 16, MakeInstructionDescriptor(16, SpvOpReturnValue, 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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TransformationLoad transformation(
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103, 40, MakeInstructionDescriptor(43, 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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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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%8 = OpTypeStruct %6 %7
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%9 = OpTypePointer Function %8
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%10 = OpTypeFunction %6 %9
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%14 = OpConstant %6 0
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%15 = OpTypePointer Function %6
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%51 = OpTypePointer Private %6
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%21 = OpConstant %6 2
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%23 = OpConstant %6 1
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%24 = OpConstant %7 1
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%25 = OpTypePointer Function %7
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%50 = OpTypePointer Private %7
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%34 = OpTypeBool
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%35 = OpConstantFalse %34
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%60 = OpConstantNull %50
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%61 = OpUndef %51
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%52 = OpVariable %50 Private
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%53 = OpVariable %51 Private
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%20 = OpVariable %9 Function
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%27 = OpVariable %9 Function ; irrelevant
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%22 = OpAccessChain %15 %20 %14
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%44 = OpCopyObject %9 %20
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%26 = OpAccessChain %25 %20 %23
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%29 = OpFunctionCall %6 %12 %27
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%30 = OpAccessChain %15 %20 %14
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%45 = OpCopyObject %15 %30
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%33 = OpAccessChain %15 %20 %14
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OpSelectionMerge %37 None
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OpBranchConditional %35 %36 %37
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%36 = OpLabel
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%100 = OpLoad %6 %33
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%38 = OpAccessChain %15 %20 %14
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%40 = OpAccessChain %15 %20 %14
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%103 = OpLoad %6 %40
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%43 = OpAccessChain %15 %20 %14
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OpBranch %37
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%37 = OpLabel
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OpReturn
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OpFunctionEnd
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%12 = OpFunction %6 None %10
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%11 = OpFunctionParameter %9 ; irrelevant
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%13 = OpLabel
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%46 = OpCopyObject %9 %11 ; irrelevant
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%16 = OpAccessChain %15 %11 %14 ; irrelevant
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%101 = OpLoad %8 %46
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%102 = OpLoad %6 %16
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OpReturnValue %21
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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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