mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-10-20 03:50:05 +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.
872 lines
30 KiB
C++
872 lines
30 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_split_block.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(TransformationSplitBlockTest, NotApplicable) {
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// The SPIR-V in this test came from the following fragment shader, with
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// local store elimination applied to get some OpPhi instructions.
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//
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// void main() {
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// int x;
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// int i;
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// for (i = 0; i < 100; i++) {
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// x += i;
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// }
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// }
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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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OpName %4 "main"
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OpName %8 "i"
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OpName %19 "x"
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OpDecorate %8 RelaxedPrecision
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OpDecorate %19 RelaxedPrecision
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OpDecorate %22 RelaxedPrecision
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OpDecorate %25 RelaxedPrecision
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OpDecorate %26 RelaxedPrecision
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OpDecorate %27 RelaxedPrecision
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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 = OpConstant %6 0
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%16 = OpConstant %6 100
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%17 = OpTypeBool
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%24 = OpConstant %6 1
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%28 = OpUndef %6
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%8 = OpVariable %7 Function
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%19 = OpVariable %7 Function
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OpStore %8 %9
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OpBranch %10
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%10 = OpLabel
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%27 = OpPhi %6 %28 %5 %22 %13
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%26 = OpPhi %6 %9 %5 %25 %13
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OpLoopMerge %12 %13 None
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OpBranch %14
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%14 = OpLabel
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%18 = OpSLessThan %17 %26 %16
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OpBranchConditional %18 %11 %12
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%11 = OpLabel
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%22 = OpIAdd %6 %27 %26
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OpStore %19 %22
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OpBranch %13
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%13 = OpLabel
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%25 = OpIAdd %6 %26 %24
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OpStore %8 %25
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OpBranch %10
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%12 = 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_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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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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// No split before OpVariable
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ASSERT_FALSE(TransformationSplitBlock(
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MakeInstructionDescriptor(8, SpvOpVariable, 0), 100)
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.IsApplicable(context.get(), transformation_context));
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ASSERT_FALSE(TransformationSplitBlock(
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MakeInstructionDescriptor(8, SpvOpVariable, 1), 100)
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.IsApplicable(context.get(), transformation_context));
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// No split before OpLabel
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ASSERT_FALSE(TransformationSplitBlock(
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MakeInstructionDescriptor(14, SpvOpLabel, 0), 100)
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.IsApplicable(context.get(), transformation_context));
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// No split if base instruction is outside a function
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ASSERT_FALSE(
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TransformationSplitBlock(MakeInstructionDescriptor(1, SpvOpLabel, 0), 100)
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.IsApplicable(context.get(), transformation_context));
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ASSERT_FALSE(TransformationSplitBlock(
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MakeInstructionDescriptor(1, SpvOpExecutionMode, 0), 100)
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.IsApplicable(context.get(), transformation_context));
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// No split if block is loop header
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ASSERT_FALSE(
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TransformationSplitBlock(MakeInstructionDescriptor(27, SpvOpPhi, 0), 100)
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.IsApplicable(context.get(), transformation_context));
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ASSERT_FALSE(
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TransformationSplitBlock(MakeInstructionDescriptor(27, SpvOpPhi, 1), 100)
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.IsApplicable(context.get(), transformation_context));
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// No split if base instruction does not exist
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ASSERT_FALSE(
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TransformationSplitBlock(MakeInstructionDescriptor(88, SpvOpIAdd, 0), 100)
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.IsApplicable(context.get(), transformation_context));
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ASSERT_FALSE(TransformationSplitBlock(
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MakeInstructionDescriptor(88, SpvOpIMul, 22), 100)
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.IsApplicable(context.get(), transformation_context));
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// No split if too many instructions with the desired opcode are skipped
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ASSERT_FALSE(
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TransformationSplitBlock(
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MakeInstructionDescriptor(18, SpvOpBranchConditional, 1), 100)
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.IsApplicable(context.get(), transformation_context));
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// No split if id in use
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ASSERT_FALSE(TransformationSplitBlock(
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MakeInstructionDescriptor(18, SpvOpSLessThan, 0), 27)
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.IsApplicable(context.get(), transformation_context));
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ASSERT_FALSE(TransformationSplitBlock(
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MakeInstructionDescriptor(18, SpvOpSLessThan, 0), 14)
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.IsApplicable(context.get(), transformation_context));
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}
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TEST(TransformationSplitBlockTest, SplitBlockSeveralTimes) {
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// The SPIR-V in this test came from the following fragment shader:
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//
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// void main() {
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// int a;
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// int b;
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// a = 1;
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// b = a;
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// a = b;
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// b = 2;
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// b++;
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// }
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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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OpName %4 "main"
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OpName %8 "a"
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OpName %10 "b"
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OpDecorate %8 RelaxedPrecision
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OpDecorate %10 RelaxedPrecision
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OpDecorate %11 RelaxedPrecision
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OpDecorate %12 RelaxedPrecision
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OpDecorate %14 RelaxedPrecision
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OpDecorate %15 RelaxedPrecision
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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 = OpConstant %6 1
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%13 = OpConstant %6 2
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%8 = OpVariable %7 Function
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%10 = OpVariable %7 Function
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OpStore %8 %9
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%11 = OpLoad %6 %8
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OpStore %10 %11
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%12 = OpLoad %6 %10
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OpStore %8 %12
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OpStore %10 %13
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%14 = OpLoad %6 %10
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%15 = OpIAdd %6 %14 %9
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OpStore %10 %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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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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auto split_1 = TransformationSplitBlock(
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MakeInstructionDescriptor(5, SpvOpStore, 0), 100);
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ASSERT_TRUE(split_1.IsApplicable(context.get(), transformation_context));
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split_1.Apply(context.get(), &transformation_context);
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ASSERT_TRUE(IsValid(env, context.get()));
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std::string after_split_1 = 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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OpName %4 "main"
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OpName %8 "a"
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OpName %10 "b"
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OpDecorate %8 RelaxedPrecision
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OpDecorate %10 RelaxedPrecision
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OpDecorate %11 RelaxedPrecision
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OpDecorate %12 RelaxedPrecision
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OpDecorate %14 RelaxedPrecision
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OpDecorate %15 RelaxedPrecision
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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 = OpConstant %6 1
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%13 = OpConstant %6 2
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%8 = OpVariable %7 Function
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%10 = OpVariable %7 Function
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OpBranch %100
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%100 = OpLabel
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OpStore %8 %9
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%11 = OpLoad %6 %8
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OpStore %10 %11
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%12 = OpLoad %6 %10
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OpStore %8 %12
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OpStore %10 %13
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%14 = OpLoad %6 %10
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%15 = OpIAdd %6 %14 %9
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OpStore %10 %15
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OpReturn
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OpFunctionEnd
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)";
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ASSERT_TRUE(IsEqual(env, after_split_1, context.get()));
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auto split_2 = TransformationSplitBlock(
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MakeInstructionDescriptor(11, SpvOpStore, 0), 101);
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ASSERT_TRUE(split_2.IsApplicable(context.get(), transformation_context));
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split_2.Apply(context.get(), &transformation_context);
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ASSERT_TRUE(IsValid(env, context.get()));
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std::string after_split_2 = 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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OpName %4 "main"
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OpName %8 "a"
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OpName %10 "b"
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OpDecorate %8 RelaxedPrecision
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OpDecorate %10 RelaxedPrecision
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OpDecorate %11 RelaxedPrecision
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OpDecorate %12 RelaxedPrecision
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OpDecorate %14 RelaxedPrecision
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OpDecorate %15 RelaxedPrecision
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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 = OpConstant %6 1
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%13 = OpConstant %6 2
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%8 = OpVariable %7 Function
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%10 = OpVariable %7 Function
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OpBranch %100
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%100 = OpLabel
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OpStore %8 %9
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%11 = OpLoad %6 %8
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OpBranch %101
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%101 = OpLabel
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OpStore %10 %11
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%12 = OpLoad %6 %10
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OpStore %8 %12
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OpStore %10 %13
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%14 = OpLoad %6 %10
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%15 = OpIAdd %6 %14 %9
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OpStore %10 %15
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OpReturn
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OpFunctionEnd
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)";
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ASSERT_TRUE(IsEqual(env, after_split_2, context.get()));
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auto split_3 = TransformationSplitBlock(
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MakeInstructionDescriptor(14, SpvOpLoad, 0), 102);
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ASSERT_TRUE(split_3.IsApplicable(context.get(), transformation_context));
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split_3.Apply(context.get(), &transformation_context);
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ASSERT_TRUE(IsValid(env, context.get()));
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std::string after_split_3 = 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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OpName %4 "main"
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OpName %8 "a"
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OpName %10 "b"
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OpDecorate %8 RelaxedPrecision
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OpDecorate %10 RelaxedPrecision
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OpDecorate %11 RelaxedPrecision
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OpDecorate %12 RelaxedPrecision
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OpDecorate %14 RelaxedPrecision
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OpDecorate %15 RelaxedPrecision
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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 = OpConstant %6 1
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%13 = OpConstant %6 2
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%8 = OpVariable %7 Function
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%10 = OpVariable %7 Function
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OpBranch %100
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%100 = OpLabel
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OpStore %8 %9
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%11 = OpLoad %6 %8
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OpBranch %101
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%101 = OpLabel
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OpStore %10 %11
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%12 = OpLoad %6 %10
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OpStore %8 %12
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OpStore %10 %13
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OpBranch %102
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%102 = OpLabel
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%14 = OpLoad %6 %10
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%15 = OpIAdd %6 %14 %9
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OpStore %10 %15
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OpReturn
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OpFunctionEnd
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)";
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ASSERT_TRUE(IsEqual(env, after_split_3, context.get()));
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}
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TEST(TransformationSplitBlockTest, SplitBlockBeforeSelectBranch) {
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// The SPIR-V in this test came from the following fragment shader:
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//
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// void main() {
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// int x, y;
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// x = 2;
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// if (x < y) {
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// y = 3;
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// } else {
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// y = 4;
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// }
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// }
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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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OpName %4 "main"
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OpName %8 "x"
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OpName %11 "y"
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OpDecorate %8 RelaxedPrecision
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OpDecorate %10 RelaxedPrecision
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OpDecorate %11 RelaxedPrecision
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OpDecorate %12 RelaxedPrecision
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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 = OpConstant %6 2
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%13 = OpTypeBool
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%17 = OpConstant %6 3
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%19 = OpConstant %6 4
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%8 = OpVariable %7 Function
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%11 = OpVariable %7 Function
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OpStore %8 %9
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%10 = OpLoad %6 %8
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%12 = OpLoad %6 %11
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%14 = OpSLessThan %13 %10 %12
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OpSelectionMerge %16 None
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OpBranchConditional %14 %15 %18
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%15 = OpLabel
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OpStore %11 %17
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OpBranch %16
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%18 = OpLabel
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OpStore %11 %19
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OpBranch %16
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%16 = 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_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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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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// Illegal to split between the merge and the conditional branch.
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ASSERT_FALSE(
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TransformationSplitBlock(
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MakeInstructionDescriptor(14, SpvOpBranchConditional, 0), 100)
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.IsApplicable(context.get(), transformation_context));
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ASSERT_FALSE(
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TransformationSplitBlock(
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MakeInstructionDescriptor(12, SpvOpBranchConditional, 0), 100)
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.IsApplicable(context.get(), transformation_context));
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auto split = TransformationSplitBlock(
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MakeInstructionDescriptor(14, SpvOpSelectionMerge, 0), 100);
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ASSERT_TRUE(split.IsApplicable(context.get(), transformation_context));
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split.Apply(context.get(), &transformation_context);
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ASSERT_TRUE(IsValid(env, context.get()));
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std::string after_split = 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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OpName %4 "main"
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OpName %8 "x"
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OpName %11 "y"
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OpDecorate %8 RelaxedPrecision
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OpDecorate %10 RelaxedPrecision
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OpDecorate %11 RelaxedPrecision
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OpDecorate %12 RelaxedPrecision
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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 = OpConstant %6 2
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%13 = OpTypeBool
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%17 = OpConstant %6 3
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%19 = OpConstant %6 4
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%8 = OpVariable %7 Function
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%11 = OpVariable %7 Function
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OpStore %8 %9
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%10 = OpLoad %6 %8
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%12 = OpLoad %6 %11
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%14 = OpSLessThan %13 %10 %12
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OpBranch %100
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%100 = OpLabel
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OpSelectionMerge %16 None
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OpBranchConditional %14 %15 %18
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%15 = OpLabel
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OpStore %11 %17
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OpBranch %16
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%18 = OpLabel
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OpStore %11 %19
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OpBranch %16
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%16 = OpLabel
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OpReturn
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OpFunctionEnd
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)";
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ASSERT_TRUE(IsEqual(env, after_split, context.get()));
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}
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TEST(TransformationSplitBlockTest, SplitBlockBeforeSwitchBranch) {
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// The SPIR-V in this test came from the following fragment shader:
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//
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// void main() {
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// int x, y;
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// switch (y) {
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// case 1:
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// x = 2;
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// case 2:
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// break;
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// case 3:
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// x = 4;
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// default:
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// x = 6;
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|
// }
|
|
// }
|
|
|
|
std::string shader = R"(
|
|
OpCapability Shader
|
|
%1 = OpExtInstImport "GLSL.std.450"
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %4 "main"
|
|
OpExecutionMode %4 OriginUpperLeft
|
|
OpSource ESSL 310
|
|
OpName %4 "main"
|
|
OpName %8 "y"
|
|
OpName %15 "x"
|
|
OpDecorate %8 RelaxedPrecision
|
|
OpDecorate %9 RelaxedPrecision
|
|
OpDecorate %15 RelaxedPrecision
|
|
%2 = OpTypeVoid
|
|
%3 = OpTypeFunction %2
|
|
%6 = OpTypeInt 32 1
|
|
%7 = OpTypePointer Function %6
|
|
%16 = OpConstant %6 2
|
|
%18 = OpConstant %6 4
|
|
%19 = OpConstant %6 6
|
|
%4 = OpFunction %2 None %3
|
|
%5 = OpLabel
|
|
%8 = OpVariable %7 Function
|
|
%15 = OpVariable %7 Function
|
|
%9 = OpLoad %6 %8
|
|
OpSelectionMerge %14 None
|
|
OpSwitch %9 %13 1 %10 2 %11 3 %12
|
|
%13 = OpLabel
|
|
OpStore %15 %19
|
|
OpBranch %14
|
|
%10 = OpLabel
|
|
OpStore %15 %16
|
|
OpBranch %11
|
|
%11 = OpLabel
|
|
OpBranch %14
|
|
%12 = OpLabel
|
|
OpStore %15 %18
|
|
OpBranch %13
|
|
%14 = OpLabel
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
const auto env = SPV_ENV_UNIVERSAL_1_3;
|
|
const auto consumer = nullptr;
|
|
const auto context = BuildModule(env, consumer, shader, kFuzzAssembleOption);
|
|
|
|
FactManager fact_manager;
|
|
spvtools::ValidatorOptions validator_options;
|
|
TransformationContext transformation_context(&fact_manager,
|
|
validator_options);
|
|
|
|
// Illegal to split between the merge and the conditional branch.
|
|
ASSERT_FALSE(TransformationSplitBlock(
|
|
MakeInstructionDescriptor(9, SpvOpSwitch, 0), 100)
|
|
.IsApplicable(context.get(), transformation_context));
|
|
ASSERT_FALSE(TransformationSplitBlock(
|
|
MakeInstructionDescriptor(15, SpvOpSwitch, 0), 100)
|
|
.IsApplicable(context.get(), transformation_context));
|
|
|
|
auto split = TransformationSplitBlock(
|
|
MakeInstructionDescriptor(9, SpvOpSelectionMerge, 0), 100);
|
|
ASSERT_TRUE(split.IsApplicable(context.get(), transformation_context));
|
|
split.Apply(context.get(), &transformation_context);
|
|
ASSERT_TRUE(IsValid(env, context.get()));
|
|
|
|
std::string after_split = R"(
|
|
OpCapability Shader
|
|
%1 = OpExtInstImport "GLSL.std.450"
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %4 "main"
|
|
OpExecutionMode %4 OriginUpperLeft
|
|
OpSource ESSL 310
|
|
OpName %4 "main"
|
|
OpName %8 "y"
|
|
OpName %15 "x"
|
|
OpDecorate %8 RelaxedPrecision
|
|
OpDecorate %9 RelaxedPrecision
|
|
OpDecorate %15 RelaxedPrecision
|
|
%2 = OpTypeVoid
|
|
%3 = OpTypeFunction %2
|
|
%6 = OpTypeInt 32 1
|
|
%7 = OpTypePointer Function %6
|
|
%16 = OpConstant %6 2
|
|
%18 = OpConstant %6 4
|
|
%19 = OpConstant %6 6
|
|
%4 = OpFunction %2 None %3
|
|
%5 = OpLabel
|
|
%8 = OpVariable %7 Function
|
|
%15 = OpVariable %7 Function
|
|
%9 = OpLoad %6 %8
|
|
OpBranch %100
|
|
%100 = OpLabel
|
|
OpSelectionMerge %14 None
|
|
OpSwitch %9 %13 1 %10 2 %11 3 %12
|
|
%13 = OpLabel
|
|
OpStore %15 %19
|
|
OpBranch %14
|
|
%10 = OpLabel
|
|
OpStore %15 %16
|
|
OpBranch %11
|
|
%11 = OpLabel
|
|
OpBranch %14
|
|
%12 = OpLabel
|
|
OpStore %15 %18
|
|
OpBranch %13
|
|
%14 = OpLabel
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
ASSERT_TRUE(IsEqual(env, after_split, context.get()));
|
|
}
|
|
|
|
TEST(TransformationSplitBlockTest, NoSplitDuringOpPhis) {
|
|
// The SPIR-V in this test came from the following fragment shader, with
|
|
// local store elimination applied to get some OpPhi instructions.
|
|
//
|
|
// void main() {
|
|
// int x;
|
|
// int i;
|
|
// for (i = 0; i < 100; i++) {
|
|
// x += i;
|
|
// }
|
|
// }
|
|
|
|
std::string shader = R"(
|
|
OpCapability Shader
|
|
%1 = OpExtInstImport "GLSL.std.450"
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %4 "main"
|
|
OpExecutionMode %4 OriginUpperLeft
|
|
OpSource ESSL 310
|
|
OpName %4 "main"
|
|
OpName %8 "i"
|
|
OpName %19 "x"
|
|
OpDecorate %8 RelaxedPrecision
|
|
OpDecorate %19 RelaxedPrecision
|
|
OpDecorate %22 RelaxedPrecision
|
|
OpDecorate %25 RelaxedPrecision
|
|
OpDecorate %26 RelaxedPrecision
|
|
OpDecorate %27 RelaxedPrecision
|
|
%2 = OpTypeVoid
|
|
%3 = OpTypeFunction %2
|
|
%6 = OpTypeInt 32 1
|
|
%7 = OpTypePointer Function %6
|
|
%9 = OpConstant %6 0
|
|
%16 = OpConstant %6 100
|
|
%17 = OpTypeBool
|
|
%24 = OpConstant %6 1
|
|
%28 = OpUndef %6
|
|
%4 = OpFunction %2 None %3
|
|
%5 = OpLabel
|
|
%8 = OpVariable %7 Function
|
|
%19 = OpVariable %7 Function
|
|
OpStore %8 %9
|
|
OpBranch %10
|
|
%10 = OpLabel
|
|
%27 = OpPhi %6 %28 %5 %22 %13
|
|
%26 = OpPhi %6 %9 %5 %25 %13
|
|
OpBranch %50
|
|
%50 = OpLabel
|
|
OpLoopMerge %12 %13 None
|
|
OpBranch %14
|
|
%14 = OpLabel
|
|
%18 = OpSLessThan %17 %26 %16
|
|
OpBranchConditional %18 %11 %12
|
|
%11 = OpLabel
|
|
%22 = OpIAdd %6 %27 %26
|
|
OpStore %19 %22
|
|
OpBranch %13
|
|
%13 = OpLabel
|
|
%25 = OpIAdd %6 %26 %24
|
|
OpStore %8 %25
|
|
OpBranch %50
|
|
%12 = OpLabel
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
const auto env = SPV_ENV_UNIVERSAL_1_3;
|
|
const auto consumer = nullptr;
|
|
const auto context = BuildModule(env, consumer, shader, kFuzzAssembleOption);
|
|
|
|
FactManager fact_manager;
|
|
spvtools::ValidatorOptions validator_options;
|
|
TransformationContext transformation_context(&fact_manager,
|
|
validator_options);
|
|
|
|
// We cannot split before OpPhi instructions, since the number of incoming
|
|
// blocks may not appropriately match after splitting.
|
|
ASSERT_FALSE(
|
|
TransformationSplitBlock(MakeInstructionDescriptor(26, SpvOpPhi, 0), 100)
|
|
.IsApplicable(context.get(), transformation_context));
|
|
ASSERT_FALSE(
|
|
TransformationSplitBlock(MakeInstructionDescriptor(27, SpvOpPhi, 0), 100)
|
|
.IsApplicable(context.get(), transformation_context));
|
|
ASSERT_FALSE(
|
|
TransformationSplitBlock(MakeInstructionDescriptor(27, SpvOpPhi, 1), 100)
|
|
.IsApplicable(context.get(), transformation_context));
|
|
}
|
|
|
|
TEST(TransformationSplitBlockTest, SplitOpPhiWithSinglePredecessor) {
|
|
std::string shader = R"(
|
|
OpCapability Shader
|
|
%1 = OpExtInstImport "GLSL.std.450"
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %4 "main"
|
|
OpExecutionMode %4 OriginUpperLeft
|
|
OpSource ESSL 310
|
|
OpName %4 "main"
|
|
OpName %8 "x"
|
|
OpName %10 "y"
|
|
OpDecorate %8 RelaxedPrecision
|
|
OpDecorate %10 RelaxedPrecision
|
|
OpDecorate %11 RelaxedPrecision
|
|
%2 = OpTypeVoid
|
|
%3 = OpTypeFunction %2
|
|
%6 = OpTypeInt 32 1
|
|
%7 = OpTypePointer Function %6
|
|
%9 = OpConstant %6 1
|
|
%4 = OpFunction %2 None %3
|
|
%5 = OpLabel
|
|
%8 = OpVariable %7 Function
|
|
%10 = OpVariable %7 Function
|
|
OpStore %8 %9
|
|
%11 = OpLoad %6 %8
|
|
OpBranch %20
|
|
%20 = OpLabel
|
|
%21 = OpPhi %6 %11 %5
|
|
OpStore %10 %21
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
const auto env = SPV_ENV_UNIVERSAL_1_3;
|
|
const auto consumer = nullptr;
|
|
const auto context = BuildModule(env, consumer, shader, kFuzzAssembleOption);
|
|
|
|
FactManager fact_manager;
|
|
spvtools::ValidatorOptions validator_options;
|
|
TransformationContext transformation_context(&fact_manager,
|
|
validator_options);
|
|
|
|
ASSERT_TRUE(
|
|
TransformationSplitBlock(MakeInstructionDescriptor(21, SpvOpPhi, 0), 100)
|
|
.IsApplicable(context.get(), transformation_context));
|
|
// An equivalent transformation to the above, just described with respect to a
|
|
// different base instruction.
|
|
auto split =
|
|
TransformationSplitBlock(MakeInstructionDescriptor(20, SpvOpPhi, 0), 100);
|
|
ASSERT_TRUE(split.IsApplicable(context.get(), transformation_context));
|
|
split.Apply(context.get(), &transformation_context);
|
|
ASSERT_TRUE(IsValid(env, context.get()));
|
|
|
|
std::string after_split = R"(
|
|
OpCapability Shader
|
|
%1 = OpExtInstImport "GLSL.std.450"
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %4 "main"
|
|
OpExecutionMode %4 OriginUpperLeft
|
|
OpSource ESSL 310
|
|
OpName %4 "main"
|
|
OpName %8 "x"
|
|
OpName %10 "y"
|
|
OpDecorate %8 RelaxedPrecision
|
|
OpDecorate %10 RelaxedPrecision
|
|
OpDecorate %11 RelaxedPrecision
|
|
%2 = OpTypeVoid
|
|
%3 = OpTypeFunction %2
|
|
%6 = OpTypeInt 32 1
|
|
%7 = OpTypePointer Function %6
|
|
%9 = OpConstant %6 1
|
|
%4 = OpFunction %2 None %3
|
|
%5 = OpLabel
|
|
%8 = OpVariable %7 Function
|
|
%10 = OpVariable %7 Function
|
|
OpStore %8 %9
|
|
%11 = OpLoad %6 %8
|
|
OpBranch %20
|
|
%20 = OpLabel
|
|
OpBranch %100
|
|
%100 = OpLabel
|
|
%21 = OpPhi %6 %11 %20
|
|
OpStore %10 %21
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
ASSERT_TRUE(IsEqual(env, after_split, context.get()));
|
|
}
|
|
|
|
TEST(TransformationSplitBlockTest, DeadBlockShouldSplitToTwoDeadBlocks) {
|
|
// This checks that if a block B is marked as dead, it should split into a
|
|
// pair of dead blocks.
|
|
std::string shader = R"(
|
|
OpCapability Shader
|
|
%1 = OpExtInstImport "GLSL.std.450"
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %4 "main"
|
|
OpExecutionMode %4 OriginUpperLeft
|
|
OpSource ESSL 310
|
|
OpName %4 "main"
|
|
%2 = OpTypeVoid
|
|
%3 = OpTypeFunction %2
|
|
%6 = OpTypeBool
|
|
%7 = OpConstantFalse %6
|
|
%4 = OpFunction %2 None %3
|
|
%5 = OpLabel
|
|
OpSelectionMerge %9 None
|
|
OpBranchConditional %7 %8 %9
|
|
%8 = OpLabel
|
|
OpBranch %9
|
|
%9 = OpLabel
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
const auto env = SPV_ENV_UNIVERSAL_1_3;
|
|
const auto consumer = nullptr;
|
|
const auto context = BuildModule(env, consumer, shader, kFuzzAssembleOption);
|
|
|
|
FactManager fact_manager;
|
|
spvtools::ValidatorOptions validator_options;
|
|
TransformationContext transformation_context(&fact_manager,
|
|
validator_options);
|
|
|
|
// Record the fact that block 8 is dead.
|
|
transformation_context.GetFactManager()->AddFactBlockIsDead(8);
|
|
|
|
auto split = TransformationSplitBlock(
|
|
MakeInstructionDescriptor(8, SpvOpBranch, 0), 100);
|
|
ASSERT_TRUE(split.IsApplicable(context.get(), transformation_context));
|
|
split.Apply(context.get(), &transformation_context);
|
|
ASSERT_TRUE(IsValid(env, context.get()));
|
|
|
|
ASSERT_TRUE(transformation_context.GetFactManager()->BlockIsDead(8));
|
|
ASSERT_TRUE(transformation_context.GetFactManager()->BlockIsDead(100));
|
|
|
|
std::string after_split = R"(
|
|
OpCapability Shader
|
|
%1 = OpExtInstImport "GLSL.std.450"
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %4 "main"
|
|
OpExecutionMode %4 OriginUpperLeft
|
|
OpSource ESSL 310
|
|
OpName %4 "main"
|
|
%2 = OpTypeVoid
|
|
%3 = OpTypeFunction %2
|
|
%6 = OpTypeBool
|
|
%7 = OpConstantFalse %6
|
|
%4 = OpFunction %2 None %3
|
|
%5 = OpLabel
|
|
OpSelectionMerge %9 None
|
|
OpBranchConditional %7 %8 %9
|
|
%8 = OpLabel
|
|
OpBranch %100
|
|
%100 = OpLabel
|
|
OpBranch %9
|
|
%9 = OpLabel
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
ASSERT_TRUE(IsEqual(env, after_split, context.get()));
|
|
}
|
|
|
|
} // namespace
|
|
} // namespace fuzz
|
|
} // namespace spvtools
|