SPIRV-Tools/test/fuzz/transformation_move_instruction_down_test.cpp
Alastair Donaldson fcb22ecf0f
spirv-fuzz: Report fresh ids in transformations (#3856)
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.
2020-09-29 22:12:49 +01:00

708 lines
23 KiB
C++

// Copyright (c) 2020 Vasyl Teliman
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "source/fuzz/transformation_move_instruction_down.h"
#include "source/fuzz/instruction_descriptor.h"
#include "test/fuzz/fuzz_test_util.h"
namespace spvtools {
namespace fuzz {
namespace {
TEST(TransformationMoveInstructionDownTest, BasicTest) {
std::string shader = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %4 "main"
OpExecutionMode %4 OriginUpperLeft
OpSource ESSL 310
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%6 = OpTypeInt 32 1
%9 = OpConstant %6 0
%16 = OpTypeBool
%17 = OpConstantFalse %16
%20 = OpUndef %6
%13 = OpTypePointer Function %6
%4 = OpFunction %2 None %3
%5 = OpLabel
%12 = OpVariable %13 Function
%10 = OpIAdd %6 %9 %9
%11 = OpISub %6 %9 %10
OpStore %12 %10
%14 = OpLoad %6 %12
%15 = OpIMul %6 %9 %14
OpSelectionMerge %19 None
OpBranchConditional %17 %18 %19
%18 = OpLabel
OpBranch %19
%19 = OpLabel
%42 = OpFunctionCall %2 %40
%22 = OpIAdd %6 %15 %15
%21 = OpIAdd %6 %15 %15
OpReturn
OpFunctionEnd
%40 = OpFunction %2 None %3
%41 = OpLabel
OpReturn
OpFunctionEnd
)";
const auto env = SPV_ENV_UNIVERSAL_1_3;
const auto consumer = nullptr;
const auto context = BuildModule(env, consumer, shader, kFuzzAssembleOption);
ASSERT_TRUE(IsValid(env, context.get()));
spvtools::ValidatorOptions validator_options;
TransformationContext transformation_context(
MakeUnique<FactManager>(context.get()), validator_options);
// Instruction descriptor is invalid.
ASSERT_FALSE(TransformationMoveInstructionDown(
MakeInstructionDescriptor(30, SpvOpNop, 0))
.IsApplicable(context.get(), transformation_context));
// Opcode is not supported.
ASSERT_FALSE(TransformationMoveInstructionDown(
MakeInstructionDescriptor(5, SpvOpLabel, 0))
.IsApplicable(context.get(), transformation_context));
ASSERT_FALSE(TransformationMoveInstructionDown(
MakeInstructionDescriptor(12, SpvOpVariable, 0))
.IsApplicable(context.get(), transformation_context));
ASSERT_FALSE(TransformationMoveInstructionDown(
MakeInstructionDescriptor(42, SpvOpFunctionCall, 0))
.IsApplicable(context.get(), transformation_context));
// Can't move the last instruction in the block.
ASSERT_FALSE(TransformationMoveInstructionDown(
MakeInstructionDescriptor(15, SpvOpBranchConditional, 0))
.IsApplicable(context.get(), transformation_context));
// Can't move the instruction if the next instruction is the last one in the
// block.
ASSERT_FALSE(TransformationMoveInstructionDown(
MakeInstructionDescriptor(21, SpvOpIAdd, 0))
.IsApplicable(context.get(), transformation_context));
// Can't insert instruction's opcode after its successor.
ASSERT_FALSE(TransformationMoveInstructionDown(
MakeInstructionDescriptor(15, SpvOpIMul, 0))
.IsApplicable(context.get(), transformation_context));
// Instruction's successor depends on the instruction.
ASSERT_FALSE(TransformationMoveInstructionDown(
MakeInstructionDescriptor(10, SpvOpIAdd, 0))
.IsApplicable(context.get(), transformation_context));
{
TransformationMoveInstructionDown transformation(
MakeInstructionDescriptor(11, SpvOpISub, 0));
ASSERT_TRUE(
transformation.IsApplicable(context.get(), transformation_context));
ApplyAndCheckFreshIds(transformation, context.get(),
&transformation_context);
ASSERT_TRUE(IsValid(env, context.get()));
}
{
TransformationMoveInstructionDown transformation(
MakeInstructionDescriptor(22, SpvOpIAdd, 0));
ASSERT_TRUE(
transformation.IsApplicable(context.get(), transformation_context));
ApplyAndCheckFreshIds(transformation, context.get(),
&transformation_context);
ASSERT_TRUE(IsValid(env, context.get()));
}
std::string after_transformation = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %4 "main"
OpExecutionMode %4 OriginUpperLeft
OpSource ESSL 310
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%6 = OpTypeInt 32 1
%9 = OpConstant %6 0
%16 = OpTypeBool
%17 = OpConstantFalse %16
%20 = OpUndef %6
%13 = OpTypePointer Function %6
%4 = OpFunction %2 None %3
%5 = OpLabel
%12 = OpVariable %13 Function
%10 = OpIAdd %6 %9 %9
OpStore %12 %10
%11 = OpISub %6 %9 %10
%14 = OpLoad %6 %12
%15 = OpIMul %6 %9 %14
OpSelectionMerge %19 None
OpBranchConditional %17 %18 %19
%18 = OpLabel
OpBranch %19
%19 = OpLabel
%42 = OpFunctionCall %2 %40
%21 = OpIAdd %6 %15 %15
%22 = OpIAdd %6 %15 %15
OpReturn
OpFunctionEnd
%40 = OpFunction %2 None %3
%41 = OpLabel
OpReturn
OpFunctionEnd
)";
ASSERT_TRUE(IsEqual(env, after_transformation, context.get()));
}
TEST(TransformationMoveInstructionDownTest, HandlesUnsupportedInstructions) {
std::string shader = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %4 "main"
OpExecutionMode %4 LocalSize 16 1 1
OpSource ESSL 320
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%6 = OpTypeInt 32 0
%7 = OpConstant %6 2
%20 = OpTypePointer Function %6
%4 = OpFunction %2 None %3
%5 = OpLabel
%21 = OpVariable %20 Function %7
; can swap simple and not supported instructions
%8 = OpCopyObject %6 %7
%9 = OpFunctionCall %2 %12
; cannot swap memory and not supported instruction
%22 = OpLoad %6 %21
%23 = OpFunctionCall %2 %12
; cannot swap barrier and not supported instruction
OpMemoryBarrier %7 %7
%24 = OpFunctionCall %2 %12
OpReturn
OpFunctionEnd
%12 = OpFunction %2 None %3
%13 = OpLabel
OpReturn
OpFunctionEnd
)";
const auto env = SPV_ENV_UNIVERSAL_1_3;
const auto consumer = nullptr;
const auto context = BuildModule(env, consumer, shader, kFuzzAssembleOption);
ASSERT_TRUE(IsValid(env, context.get()));
spvtools::ValidatorOptions validator_options;
TransformationContext transformation_context(
MakeUnique<FactManager>(context.get()), validator_options);
// Swap memory instruction with an unsupported one.
ASSERT_FALSE(TransformationMoveInstructionDown(
MakeInstructionDescriptor(22, SpvOpLoad, 0))
.IsApplicable(context.get(), transformation_context));
// Swap memory barrier with an unsupported one.
ASSERT_FALSE(TransformationMoveInstructionDown(
MakeInstructionDescriptor(23, SpvOpMemoryBarrier, 0))
.IsApplicable(context.get(), transformation_context));
// Swap simple instruction with an unsupported one.
TransformationMoveInstructionDown transformation(
MakeInstructionDescriptor(8, SpvOpCopyObject, 0));
ASSERT_TRUE(
transformation.IsApplicable(context.get(), transformation_context));
ApplyAndCheckFreshIds(transformation, context.get(), &transformation_context);
ASSERT_TRUE(IsValid(env, context.get()));
std::string after_transformation = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %4 "main"
OpExecutionMode %4 LocalSize 16 1 1
OpSource ESSL 320
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%6 = OpTypeInt 32 0
%7 = OpConstant %6 2
%20 = OpTypePointer Function %6
%4 = OpFunction %2 None %3
%5 = OpLabel
%21 = OpVariable %20 Function %7
; can swap simple and not supported instructions
%9 = OpFunctionCall %2 %12
%8 = OpCopyObject %6 %7
; cannot swap memory and not supported instruction
%22 = OpLoad %6 %21
%23 = OpFunctionCall %2 %12
; cannot swap barrier and not supported instruction
OpMemoryBarrier %7 %7
%24 = OpFunctionCall %2 %12
OpReturn
OpFunctionEnd
%12 = OpFunction %2 None %3
%13 = OpLabel
OpReturn
OpFunctionEnd
)";
ASSERT_TRUE(IsEqual(env, after_transformation, context.get()));
}
TEST(TransformationMoveInstructionDownTest, HandlesBarrierInstructions) {
std::string shader = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %4 "main"
OpExecutionMode %4 LocalSize 16 1 1
OpSource ESSL 320
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%6 = OpTypeInt 32 0
%7 = OpConstant %6 2
%20 = OpTypePointer Function %6
%4 = OpFunction %2 None %3
%5 = OpLabel
%21 = OpVariable %20 Function %7
; cannot swap two barrier instructions
OpMemoryBarrier %7 %7
OpMemoryBarrier %7 %7
; cannot swap barrier and memory instructions
OpMemoryBarrier %7 %7
%22 = OpLoad %6 %21
OpMemoryBarrier %7 %7
; can swap barrier and simple instructions
%23 = OpCopyObject %6 %7
OpMemoryBarrier %7 %7
OpReturn
OpFunctionEnd
%12 = OpFunction %2 None %3
%13 = OpLabel
OpReturn
OpFunctionEnd
)";
const auto env = SPV_ENV_UNIVERSAL_1_3;
const auto consumer = nullptr;
const auto context = BuildModule(env, consumer, shader, kFuzzAssembleOption);
ASSERT_TRUE(IsValid(env, context.get()));
spvtools::ValidatorOptions validator_options;
TransformationContext transformation_context(
MakeUnique<FactManager>(context.get()), validator_options);
// Swap two barrier instructions.
ASSERT_FALSE(TransformationMoveInstructionDown(
MakeInstructionDescriptor(21, SpvOpMemoryBarrier, 0))
.IsApplicable(context.get(), transformation_context));
// Swap barrier and memory instructions.
ASSERT_FALSE(TransformationMoveInstructionDown(
MakeInstructionDescriptor(21, SpvOpMemoryBarrier, 2))
.IsApplicable(context.get(), transformation_context));
ASSERT_FALSE(TransformationMoveInstructionDown(
MakeInstructionDescriptor(22, SpvOpLoad, 0))
.IsApplicable(context.get(), transformation_context));
// Swap barrier and simple instructions.
{
TransformationMoveInstructionDown transformation(
MakeInstructionDescriptor(23, SpvOpCopyObject, 0));
ASSERT_TRUE(
transformation.IsApplicable(context.get(), transformation_context));
ApplyAndCheckFreshIds(transformation, context.get(),
&transformation_context);
ASSERT_TRUE(IsValid(env, context.get()));
}
{
TransformationMoveInstructionDown transformation(
MakeInstructionDescriptor(22, SpvOpMemoryBarrier, 1));
ASSERT_TRUE(
transformation.IsApplicable(context.get(), transformation_context));
ApplyAndCheckFreshIds(transformation, context.get(),
&transformation_context);
ASSERT_TRUE(IsValid(env, context.get()));
}
ASSERT_TRUE(IsEqual(env, shader, context.get()));
}
TEST(TransformationMoveInstructionDownTest, HandlesSimpleInstructions) {
std::string shader = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %4 "main"
OpExecutionMode %4 LocalSize 16 1 1
OpSource ESSL 320
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%6 = OpTypeInt 32 0
%7 = OpConstant %6 2
%20 = OpTypePointer Function %6
%4 = OpFunction %2 None %3
%5 = OpLabel
%21 = OpVariable %20 Function %7
; can swap simple and barrier instructions
%40 = OpCopyObject %6 %7
OpMemoryBarrier %7 %7
; can swap simple and memory instructions
%41 = OpCopyObject %6 %7
%22 = OpLoad %6 %21
; can swap two simple instructions
%23 = OpCopyObject %6 %7
%42 = OpCopyObject %6 %7
OpReturn
OpFunctionEnd
%12 = OpFunction %2 None %3
%13 = OpLabel
OpReturn
OpFunctionEnd
)";
const auto env = SPV_ENV_UNIVERSAL_1_3;
const auto consumer = nullptr;
const auto context = BuildModule(env, consumer, shader, kFuzzAssembleOption);
ASSERT_TRUE(IsValid(env, context.get()));
spvtools::ValidatorOptions validator_options;
TransformationContext transformation_context(
MakeUnique<FactManager>(context.get()), validator_options);
// Swap simple and barrier instructions.
{
TransformationMoveInstructionDown transformation(
MakeInstructionDescriptor(40, SpvOpCopyObject, 0));
ASSERT_TRUE(
transformation.IsApplicable(context.get(), transformation_context));
ApplyAndCheckFreshIds(transformation, context.get(),
&transformation_context);
ASSERT_TRUE(IsValid(env, context.get()));
}
{
TransformationMoveInstructionDown transformation(
MakeInstructionDescriptor(21, SpvOpMemoryBarrier, 0));
ASSERT_TRUE(
transformation.IsApplicable(context.get(), transformation_context));
ApplyAndCheckFreshIds(transformation, context.get(),
&transformation_context);
ASSERT_TRUE(IsValid(env, context.get()));
}
// Swap simple and memory instructions.
{
TransformationMoveInstructionDown transformation(
MakeInstructionDescriptor(41, SpvOpCopyObject, 0));
ASSERT_TRUE(
transformation.IsApplicable(context.get(), transformation_context));
ApplyAndCheckFreshIds(transformation, context.get(),
&transformation_context);
ASSERT_TRUE(IsValid(env, context.get()));
}
{
TransformationMoveInstructionDown transformation(
MakeInstructionDescriptor(22, SpvOpLoad, 0));
ASSERT_TRUE(
transformation.IsApplicable(context.get(), transformation_context));
ApplyAndCheckFreshIds(transformation, context.get(),
&transformation_context);
ASSERT_TRUE(IsValid(env, context.get()));
}
// Swap two simple instructions.
{
TransformationMoveInstructionDown transformation(
MakeInstructionDescriptor(23, SpvOpCopyObject, 0));
ASSERT_TRUE(
transformation.IsApplicable(context.get(), transformation_context));
ApplyAndCheckFreshIds(transformation, context.get(),
&transformation_context);
ASSERT_TRUE(IsValid(env, context.get()));
}
std::string after_transformation = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %4 "main"
OpExecutionMode %4 LocalSize 16 1 1
OpSource ESSL 320
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%6 = OpTypeInt 32 0
%7 = OpConstant %6 2
%20 = OpTypePointer Function %6
%4 = OpFunction %2 None %3
%5 = OpLabel
%21 = OpVariable %20 Function %7
; can swap simple and barrier instructions
%40 = OpCopyObject %6 %7
OpMemoryBarrier %7 %7
; can swap simple and memory instructions
%41 = OpCopyObject %6 %7
%22 = OpLoad %6 %21
; can swap two simple instructions
%42 = OpCopyObject %6 %7
%23 = OpCopyObject %6 %7
OpReturn
OpFunctionEnd
%12 = OpFunction %2 None %3
%13 = OpLabel
OpReturn
OpFunctionEnd
)";
ASSERT_TRUE(IsEqual(env, after_transformation, context.get()));
}
TEST(TransformationMoveInstructionDownTest, HandlesMemoryInstructions) {
std::string shader = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %4 "main"
OpExecutionMode %4 LocalSize 16 1 1
OpSource ESSL 320
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%6 = OpTypeInt 32 0
%7 = OpConstant %6 2
%20 = OpTypePointer Function %6
%4 = OpFunction %2 None %3
%5 = OpLabel
%21 = OpVariable %20 Function %7
%22 = OpVariable %20 Function %7
; swap R and R instructions
%23 = OpLoad %6 %21
%24 = OpLoad %6 %22
; swap R and RW instructions
; can't swap
%25 = OpLoad %6 %21
OpCopyMemory %21 %22
; can swap
%26 = OpLoad %6 %21
OpCopyMemory %22 %21
%27 = OpLoad %6 %22
OpCopyMemory %21 %22
%28 = OpLoad %6 %22
OpCopyMemory %22 %21
; swap R and W instructions
; can't swap
%29 = OpLoad %6 %21
OpStore %21 %7
; can swap
%30 = OpLoad %6 %22
OpStore %21 %7
%31 = OpLoad %6 %21
OpStore %22 %7
%32 = OpLoad %6 %22
OpStore %22 %7
; swap RW and RW instructions
; can't swap
OpCopyMemory %21 %21
OpCopyMemory %21 %21
OpCopyMemory %21 %22
OpCopyMemory %21 %21
OpCopyMemory %21 %21
OpCopyMemory %21 %22
; can swap
OpCopyMemory %22 %21
OpCopyMemory %21 %22
OpCopyMemory %22 %21
OpCopyMemory %22 %21
OpCopyMemory %21 %22
OpCopyMemory %21 %22
; swap RW and W instructions
; can't swap
OpCopyMemory %21 %21
OpStore %21 %7
OpStore %21 %7
OpCopyMemory %21 %21
; can swap
OpCopyMemory %22 %21
OpStore %21 %7
OpCopyMemory %21 %22
OpStore %21 %7
OpCopyMemory %21 %21
OpStore %22 %7
; swap W and W instructions
; can't swap
OpStore %21 %7
OpStore %21 %7
; can swap
OpStore %22 %7
OpStore %21 %7
OpStore %22 %7
OpStore %22 %7
OpReturn
OpFunctionEnd
)";
const auto env = SPV_ENV_UNIVERSAL_1_3;
const auto consumer = nullptr;
const auto context = BuildModule(env, consumer, shader, kFuzzAssembleOption);
ASSERT_TRUE(IsValid(env, context.get()));
spvtools::ValidatorOptions validator_options;
TransformationContext transformation_context(
MakeUnique<FactManager>(context.get()), validator_options);
transformation_context.GetFactManager()->AddFactValueOfPointeeIsIrrelevant(
22);
// Invalid swaps.
protobufs::InstructionDescriptor invalid_swaps[] = {
// R and RW
MakeInstructionDescriptor(25, SpvOpLoad, 0),
// R and W
MakeInstructionDescriptor(29, SpvOpLoad, 0),
// RW and RW
MakeInstructionDescriptor(32, SpvOpCopyMemory, 0),
MakeInstructionDescriptor(32, SpvOpCopyMemory, 2),
MakeInstructionDescriptor(32, SpvOpCopyMemory, 4),
// RW and W
MakeInstructionDescriptor(32, SpvOpCopyMemory, 12),
MakeInstructionDescriptor(32, SpvOpStore, 1),
// W and W
MakeInstructionDescriptor(32, SpvOpStore, 6),
};
for (const auto& descriptor : invalid_swaps) {
ASSERT_FALSE(TransformationMoveInstructionDown(descriptor)
.IsApplicable(context.get(), transformation_context));
}
// Valid swaps.
protobufs::InstructionDescriptor valid_swaps[] = {
// R and R
MakeInstructionDescriptor(23, SpvOpLoad, 0),
MakeInstructionDescriptor(24, SpvOpLoad, 0),
// R and RW
MakeInstructionDescriptor(26, SpvOpLoad, 0),
MakeInstructionDescriptor(25, SpvOpCopyMemory, 1),
MakeInstructionDescriptor(27, SpvOpLoad, 0),
MakeInstructionDescriptor(26, SpvOpCopyMemory, 1),
MakeInstructionDescriptor(28, SpvOpLoad, 0),
MakeInstructionDescriptor(27, SpvOpCopyMemory, 1),
// R and W
MakeInstructionDescriptor(30, SpvOpLoad, 0),
MakeInstructionDescriptor(29, SpvOpStore, 1),
MakeInstructionDescriptor(31, SpvOpLoad, 0),
MakeInstructionDescriptor(30, SpvOpStore, 1),
MakeInstructionDescriptor(32, SpvOpLoad, 0),
MakeInstructionDescriptor(31, SpvOpStore, 1),
// RW and RW
MakeInstructionDescriptor(32, SpvOpCopyMemory, 6),
MakeInstructionDescriptor(32, SpvOpCopyMemory, 6),
MakeInstructionDescriptor(32, SpvOpCopyMemory, 8),
MakeInstructionDescriptor(32, SpvOpCopyMemory, 8),
MakeInstructionDescriptor(32, SpvOpCopyMemory, 10),
MakeInstructionDescriptor(32, SpvOpCopyMemory, 10),
// RW and W
MakeInstructionDescriptor(32, SpvOpCopyMemory, 14),
MakeInstructionDescriptor(32, SpvOpStore, 3),
MakeInstructionDescriptor(32, SpvOpCopyMemory, 15),
MakeInstructionDescriptor(32, SpvOpStore, 4),
MakeInstructionDescriptor(32, SpvOpCopyMemory, 16),
MakeInstructionDescriptor(32, SpvOpStore, 5),
// W and W
MakeInstructionDescriptor(32, SpvOpStore, 8),
MakeInstructionDescriptor(32, SpvOpStore, 8),
MakeInstructionDescriptor(32, SpvOpStore, 10),
MakeInstructionDescriptor(32, SpvOpStore, 10),
};
for (const auto& descriptor : valid_swaps) {
TransformationMoveInstructionDown transformation(descriptor);
ASSERT_TRUE(
transformation.IsApplicable(context.get(), transformation_context));
ApplyAndCheckFreshIds(transformation, context.get(),
&transformation_context);
ASSERT_TRUE(IsValid(env, context.get()));
}
ASSERT_TRUE(IsEqual(env, shader, context.get()));
}
} // namespace
} // namespace fuzz
} // namespace spvtools