| // Copyright (c) 2018 Google LLC |
| // |
| // 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 <memory> |
| #include <string> |
| |
| #include "gmock/gmock.h" |
| #include "gtest/gtest.h" |
| #include "source/opt/build_module.h" |
| #include "source/opt/ir_context.h" |
| |
| namespace spvtools { |
| namespace opt { |
| namespace { |
| |
| using CommonDominatorsTest = ::testing::Test; |
| |
| const std::string text = R"( |
| OpCapability Shader |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %func "func" |
| %void = OpTypeVoid |
| %bool = OpTypeBool |
| %true = OpConstantTrue %bool |
| %functy = OpTypeFunction %void |
| %func = OpFunction %void None %functy |
| %1 = OpLabel |
| OpBranch %2 |
| %2 = OpLabel |
| OpLoopMerge %3 %4 None |
| OpBranch %5 |
| %5 = OpLabel |
| OpBranchConditional %true %3 %4 |
| %4 = OpLabel |
| OpBranch %2 |
| %3 = OpLabel |
| OpSelectionMerge %6 None |
| OpBranchConditional %true %7 %8 |
| %7 = OpLabel |
| OpBranch %6 |
| %8 = OpLabel |
| OpBranch %9 |
| %9 = OpLabel |
| OpBranch %6 |
| %6 = OpLabel |
| OpBranch %10 |
| %11 = OpLabel |
| OpBranch %10 |
| %10 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| BasicBlock* GetBlock(uint32_t id, std::unique_ptr<IRContext>& context) { |
| return context->get_instr_block(context->get_def_use_mgr()->GetDef(id)); |
| } |
| |
| TEST(CommonDominatorsTest, SameBlock) { |
| std::unique_ptr<IRContext> context = |
| BuildModule(SPV_ENV_UNIVERSAL_1_2, nullptr, text, |
| SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS); |
| EXPECT_NE(nullptr, context); |
| |
| DominatorAnalysis* analysis = |
| context->GetDominatorAnalysis(&*context->module()->begin()); |
| |
| for (auto& block : *context->module()->begin()) { |
| EXPECT_EQ(&block, analysis->CommonDominator(&block, &block)); |
| } |
| } |
| |
| TEST(CommonDominatorsTest, ParentAndChild) { |
| std::unique_ptr<IRContext> context = |
| BuildModule(SPV_ENV_UNIVERSAL_1_2, nullptr, text, |
| SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS); |
| EXPECT_NE(nullptr, context); |
| |
| DominatorAnalysis* analysis = |
| context->GetDominatorAnalysis(&*context->module()->begin()); |
| |
| EXPECT_EQ( |
| GetBlock(1u, context), |
| analysis->CommonDominator(GetBlock(1u, context), GetBlock(2u, context))); |
| EXPECT_EQ( |
| GetBlock(2u, context), |
| analysis->CommonDominator(GetBlock(2u, context), GetBlock(5u, context))); |
| EXPECT_EQ( |
| GetBlock(1u, context), |
| analysis->CommonDominator(GetBlock(1u, context), GetBlock(5u, context))); |
| } |
| |
| TEST(CommonDominatorsTest, BranchSplit) { |
| std::unique_ptr<IRContext> context = |
| BuildModule(SPV_ENV_UNIVERSAL_1_2, nullptr, text, |
| SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS); |
| EXPECT_NE(nullptr, context); |
| |
| DominatorAnalysis* analysis = |
| context->GetDominatorAnalysis(&*context->module()->begin()); |
| |
| EXPECT_EQ( |
| GetBlock(3u, context), |
| analysis->CommonDominator(GetBlock(7u, context), GetBlock(8u, context))); |
| EXPECT_EQ( |
| GetBlock(3u, context), |
| analysis->CommonDominator(GetBlock(7u, context), GetBlock(9u, context))); |
| } |
| |
| TEST(CommonDominatorsTest, LoopContinueAndMerge) { |
| std::unique_ptr<IRContext> context = |
| BuildModule(SPV_ENV_UNIVERSAL_1_2, nullptr, text, |
| SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS); |
| EXPECT_NE(nullptr, context); |
| |
| DominatorAnalysis* analysis = |
| context->GetDominatorAnalysis(&*context->module()->begin()); |
| |
| EXPECT_EQ( |
| GetBlock(5u, context), |
| analysis->CommonDominator(GetBlock(3u, context), GetBlock(4u, context))); |
| } |
| |
| TEST(CommonDominatorsTest, NoCommonDominator) { |
| std::unique_ptr<IRContext> context = |
| BuildModule(SPV_ENV_UNIVERSAL_1_2, nullptr, text, |
| SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS); |
| EXPECT_NE(nullptr, context); |
| |
| DominatorAnalysis* analysis = |
| context->GetDominatorAnalysis(&*context->module()->begin()); |
| |
| EXPECT_EQ(nullptr, analysis->CommonDominator(GetBlock(10u, context), |
| GetBlock(11u, context))); |
| EXPECT_EQ(nullptr, analysis->CommonDominator(GetBlock(11u, context), |
| GetBlock(6u, context))); |
| } |
| |
| } // namespace |
| } // namespace opt |
| } // namespace spvtools |