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https://github.com/KhronosGroup/SPIRV-Tools
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92a71657fc
Swaps an instruction with the next instruction in the block. Fixes #3457.
166 lines
6.1 KiB
C++
166 lines
6.1 KiB
C++
// Copyright (c) 2020 Vasyl Teliman
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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_move_instruction_down.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(TransformationMoveInstructionDownTest, 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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%9 = OpConstant %6 0
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%16 = OpTypeBool
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%17 = OpConstantFalse %16
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%20 = OpUndef %6
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%13 = OpTypePointer Function %6
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%12 = OpVariable %13 Function
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%10 = OpIAdd %6 %9 %9
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%11 = OpISub %6 %9 %10
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OpStore %12 %10
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%14 = OpLoad %6 %12
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%15 = OpIMul %6 %9 %14
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OpSelectionMerge %19 None
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OpBranchConditional %17 %18 %19
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%18 = OpLabel
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OpBranch %19
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%19 = OpLabel
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%22 = OpIAdd %6 %15 %15
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%21 = OpIAdd %6 %15 %15
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OpReturn
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OpFunctionEnd
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)";
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const auto env = SPV_ENV_UNIVERSAL_1_3;
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const auto consumer = nullptr;
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const auto context = BuildModule(env, consumer, shader, kFuzzAssembleOption);
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ASSERT_TRUE(IsValid(env, context.get()));
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FactManager fact_manager;
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spvtools::ValidatorOptions validator_options;
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TransformationContext transformation_context(&fact_manager,
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validator_options);
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// Instruction descriptor is invalid.
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ASSERT_FALSE(TransformationMoveInstructionDown(
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MakeInstructionDescriptor(30, SpvOpNop, 0))
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.IsApplicable(context.get(), transformation_context));
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// Opcode is not supported.
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ASSERT_FALSE(TransformationMoveInstructionDown(
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MakeInstructionDescriptor(5, SpvOpLabel, 0))
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.IsApplicable(context.get(), transformation_context));
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ASSERT_FALSE(TransformationMoveInstructionDown(
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MakeInstructionDescriptor(12, SpvOpVariable, 0))
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.IsApplicable(context.get(), transformation_context));
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ASSERT_FALSE(TransformationMoveInstructionDown(
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MakeInstructionDescriptor(11, SpvOpStore, 0))
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.IsApplicable(context.get(), transformation_context));
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ASSERT_FALSE(TransformationMoveInstructionDown(
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MakeInstructionDescriptor(14, SpvOpLoad, 0))
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.IsApplicable(context.get(), transformation_context));
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// Can't move the last instruction in the block.
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ASSERT_FALSE(TransformationMoveInstructionDown(
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MakeInstructionDescriptor(15, SpvOpBranchConditional, 0))
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.IsApplicable(context.get(), transformation_context));
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// Can't move the instruction if the next instruction is the last one in the
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// block.
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ASSERT_FALSE(TransformationMoveInstructionDown(
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MakeInstructionDescriptor(21, SpvOpIAdd, 0))
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.IsApplicable(context.get(), transformation_context));
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// Can't insert instruction's opcode after its successor.
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ASSERT_FALSE(TransformationMoveInstructionDown(
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MakeInstructionDescriptor(15, SpvOpIMul, 0))
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.IsApplicable(context.get(), transformation_context));
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// Instruction's successor depends on the instruction.
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ASSERT_FALSE(TransformationMoveInstructionDown(
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MakeInstructionDescriptor(10, SpvOpIAdd, 0))
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.IsApplicable(context.get(), transformation_context));
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{
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TransformationMoveInstructionDown transformation(
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MakeInstructionDescriptor(11, SpvOpISub, 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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TransformationMoveInstructionDown transformation(
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MakeInstructionDescriptor(22, SpvOpIAdd, 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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%9 = OpConstant %6 0
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%16 = OpTypeBool
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%17 = OpConstantFalse %16
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%20 = OpUndef %6
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%13 = OpTypePointer Function %6
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%12 = OpVariable %13 Function
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%10 = OpIAdd %6 %9 %9
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OpStore %12 %10
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%11 = OpISub %6 %9 %10
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%14 = OpLoad %6 %12
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%15 = OpIMul %6 %9 %14
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OpSelectionMerge %19 None
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OpBranchConditional %17 %18 %19
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%18 = OpLabel
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OpBranch %19
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%19 = OpLabel
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%21 = OpIAdd %6 %15 %15
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%22 = OpIAdd %6 %15 %15
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OpReturn
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OpFunctionEnd
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)";
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ASSERT_TRUE(IsEqual(env, after_transformation, context.get()));
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}
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} // namespace
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} // namespace fuzz
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} // namespace spvtools
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