mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-10-18 19:20:05 +00:00
fcb22ecf0f
Adds a virtual method, GetFreshIds(), to Transformation. Every transformation uses this to indicate which ids in its protobuf message are fresh ids. This means that when replaying a sequence of transformations the replayer can obtain a smallest id that is not in use by the module already and that will not be used by any transformation by necessity. Ids greater than or equal to this id can be used as overflow ids. Fixes #3851.
423 lines
16 KiB
C++
423 lines
16 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_store.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(TransformationStoreTest, 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" %92 %52 %53
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OpExecutionMode %4 OriginUpperLeft
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OpSource ESSL 310
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OpDecorate %92 BuiltIn FragCoord
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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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%80 = OpConstantComposite %8 %21 %24
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%90 = OpTypeVector %7 4
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%91 = OpTypePointer Input %90
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%92 = OpVariable %91 Input
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%93 = OpConstantComposite %90 %24 %24 %24 %24
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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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%81 = OpCopyObject %9 %27 ; irrelevant
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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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%82 = OpCopyObject %9 %27 ; irrelevant
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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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%95 = OpCopyObject %8 %80
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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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spvtools::ValidatorOptions validator_options;
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TransformationContext transformation_context(
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MakeUnique<FactManager>(context.get()), 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()->AddFactValueOfPointeeIsIrrelevant(
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81);
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transformation_context.GetFactManager()->AddFactValueOfPointeeIsIrrelevant(
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82);
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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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// 92 - ptr_to(90) - read only
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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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// 81 - ptr_to(8) - irrelevant
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// 82 - 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: attempt to store to 11 from outside its function
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ASSERT_FALSE(TransformationStore(
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11, 80, 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(TransformationStore(
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81, 80, 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(TransformationStore(
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52, 24, 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(TransformationStore(
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1000, 24, 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(TransformationStore(
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5, 24, 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(TransformationStore(
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24, 24, MakeInstructionDescriptor(38, SpvOpAccessChain, 0))
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.IsApplicable(context.get(), transformation_context));
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// Bad: attempt to store to a null pointer
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ASSERT_FALSE(TransformationStore(
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60, 24, MakeInstructionDescriptor(38, SpvOpAccessChain, 0))
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.IsApplicable(context.get(), transformation_context));
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// Bad: attempt to store to an undefined pointer
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ASSERT_FALSE(TransformationStore(
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61, 21, MakeInstructionDescriptor(38, SpvOpAccessChain, 0))
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.IsApplicable(context.get(), transformation_context));
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// Bad: %82 is not available at the program point
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ASSERT_FALSE(
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TransformationStore(82, 80, MakeInstructionDescriptor(37, SpvOpReturn, 0))
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.IsApplicable(context.get(), transformation_context));
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// Bad: value id does not exist
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ASSERT_FALSE(TransformationStore(
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27, 1000, MakeInstructionDescriptor(38, SpvOpAccessChain, 0))
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.IsApplicable(context.get(), transformation_context));
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// Bad: value id exists but does not have a type
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ASSERT_FALSE(TransformationStore(
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27, 15, MakeInstructionDescriptor(38, SpvOpAccessChain, 0))
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.IsApplicable(context.get(), transformation_context));
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// Bad: value id exists but has the wrong type
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ASSERT_FALSE(TransformationStore(
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27, 14, MakeInstructionDescriptor(38, SpvOpAccessChain, 0))
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.IsApplicable(context.get(), transformation_context));
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// Bad: attempt to store to read-only variable
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ASSERT_FALSE(TransformationStore(
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92, 93, MakeInstructionDescriptor(40, SpvOpAccessChain, 0))
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.IsApplicable(context.get(), transformation_context));
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// Bad: value is not available
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ASSERT_FALSE(TransformationStore(
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27, 95, MakeInstructionDescriptor(40, SpvOpAccessChain, 0))
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.IsApplicable(context.get(), transformation_context));
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// Bad: variable being stored to does not have an irrelevant pointee value,
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// and the store is not in a dead block.
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ASSERT_FALSE(TransformationStore(
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20, 95, MakeInstructionDescriptor(45, SpvOpCopyObject, 0))
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.IsApplicable(context.get(), transformation_context));
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// The described instruction does not exist.
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ASSERT_FALSE(TransformationStore(
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27, 80, MakeInstructionDescriptor(1000, SpvOpAccessChain, 0))
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.IsApplicable(context.get(), transformation_context));
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{
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// Store to irrelevant variable from dead block.
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TransformationStore transformation(
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27, 80, MakeInstructionDescriptor(38, SpvOpAccessChain, 0));
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ASSERT_TRUE(
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transformation.IsApplicable(context.get(), transformation_context));
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ApplyAndCheckFreshIds(transformation, context.get(),
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&transformation_context);
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ASSERT_TRUE(IsValid(env, context.get()));
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}
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{
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// Store to irrelevant variable from live block.
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TransformationStore transformation(
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11, 95, MakeInstructionDescriptor(95, SpvOpReturnValue, 0));
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ASSERT_TRUE(
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transformation.IsApplicable(context.get(), transformation_context));
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ApplyAndCheckFreshIds(transformation, context.get(),
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&transformation_context);
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ASSERT_TRUE(IsValid(env, context.get()));
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}
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{
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// Store to irrelevant variable from live block.
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TransformationStore transformation(
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46, 80, MakeInstructionDescriptor(95, SpvOpReturnValue, 0));
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ASSERT_TRUE(
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transformation.IsApplicable(context.get(), transformation_context));
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ApplyAndCheckFreshIds(transformation, context.get(),
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&transformation_context);
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ASSERT_TRUE(IsValid(env, context.get()));
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}
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{
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// Store to irrelevant variable from live block.
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TransformationStore transformation(
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16, 21, MakeInstructionDescriptor(95, SpvOpReturnValue, 0));
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ASSERT_TRUE(
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transformation.IsApplicable(context.get(), transformation_context));
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ApplyAndCheckFreshIds(transformation, context.get(),
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&transformation_context);
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ASSERT_TRUE(IsValid(env, context.get()));
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}
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{
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// Store to non-irrelevant variable from dead block.
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TransformationStore transformation(
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53, 21, MakeInstructionDescriptor(38, SpvOpAccessChain, 0));
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ASSERT_TRUE(
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transformation.IsApplicable(context.get(), transformation_context));
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ApplyAndCheckFreshIds(transformation, context.get(),
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&transformation_context);
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ASSERT_TRUE(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" %92 %52 %53
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OpExecutionMode %4 OriginUpperLeft
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OpSource ESSL 310
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OpDecorate %92 BuiltIn FragCoord
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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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%80 = OpConstantComposite %8 %21 %24
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%90 = OpTypeVector %7 4
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%91 = OpTypePointer Input %90
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%92 = OpVariable %91 Input
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%93 = OpConstantComposite %90 %24 %24 %24 %24
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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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%81 = OpCopyObject %9 %27 ; irrelevant
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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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OpStore %27 %80
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OpStore %53 %21
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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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%82 = OpCopyObject %9 %27 ; irrelevant
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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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%95 = OpCopyObject %8 %80
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OpStore %11 %95
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OpStore %46 %80
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OpStore %16 %21
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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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TEST(TransformationStoreTest, DoNotAllowStoresToReadOnlyMemory) {
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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 320
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OpMemberDecorate %10 0 Offset 0
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OpMemberDecorate %10 1 Offset 4
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OpDecorate %10 Block
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OpMemberDecorate %23 0 Offset 0
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OpDecorate %23 Block
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OpDecorate %25 DescriptorSet 0
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OpDecorate %25 Binding 0
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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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%9 = OpTypeFloat 32
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%10 = OpTypeStruct %6 %9
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%11 = OpTypePointer PushConstant %10
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%12 = OpVariable %11 PushConstant
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%13 = OpConstant %6 0
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%14 = OpTypePointer PushConstant %6
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%17 = OpConstant %6 1
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%18 = OpTypePointer PushConstant %9
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%23 = OpTypeStruct %9
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%24 = OpTypePointer UniformConstant %23
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%25 = OpVariable %24 UniformConstant
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%26 = OpTypePointer UniformConstant %9
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%50 = OpConstant %9 0
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%15 = OpAccessChain %14 %12 %13
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%19 = OpAccessChain %18 %12 %17
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%27 = OpAccessChain %26 %25 %13
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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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spvtools::ValidatorOptions validator_options;
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TransformationContext transformation_context(
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MakeUnique<FactManager>(context.get()), validator_options);
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transformation_context.GetFactManager()->AddFactBlockIsDead(5);
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ASSERT_FALSE(
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TransformationStore(15, 13, MakeInstructionDescriptor(27, SpvOpReturn, 0))
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.IsApplicable(context.get(), transformation_context));
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ASSERT_FALSE(
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TransformationStore(19, 50, MakeInstructionDescriptor(27, SpvOpReturn, 0))
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.IsApplicable(context.get(), transformation_context));
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ASSERT_FALSE(
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TransformationStore(27, 50, MakeInstructionDescriptor(27, 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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