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* Add
FullOptimization.h allowing users to fully optimize LLVM mod…
…ules (pull #869)
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llvm/src/main/resources/org/bytedeco/llvm/include/FullOptimization.h
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| /* | ||
| * Copyright (C) 2020 Yu Kobayashi | ||
| * | ||
| * Licensed either under the Apache License, Version 2.0, or (at your option) | ||
| * under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation (subject to the "Classpath" exception), | ||
| * either version 2, or any later version (collectively, 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 | ||
| * http://www.gnu.org/licenses/ | ||
| * http://www.gnu.org/software/classpath/license.html | ||
| * | ||
| * or as provided in the LICENSE.txt file that accompanied this code. | ||
| * 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. | ||
| */ | ||
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| #ifndef FULL_OPTIMIZATION_H | ||
| #define FULL_OPTIMIZATION_H | ||
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| #include "llvm/ExecutionEngine/ExecutionEngine.h" | ||
| #include "llvm/Target/TargetMachine.h" | ||
| #include "llvm/Transforms/IPO.h" | ||
| #include "llvm/Transforms/IPO/PassManagerBuilder.h" | ||
| #include "llvm/IR/Verifier.h" | ||
| #include "llvm/IR/LegacyPassManager.h" | ||
| #include "llvm/CodeGen/TargetPassConfig.h" | ||
| #include "llvm/Support/TargetRegistry.h" | ||
| #include "llvm/Analysis/TargetLibraryInfo.h" | ||
| #include "llvm/Analysis/TargetTransformInfo.h" | ||
| #include "llvm/MC/SubtargetFeature.h" | ||
| #include "llvm/Pass.h" | ||
| #include "llvm-c/Transforms/PassManagerBuilder.h" | ||
| #include "llvm-c/Types.h" | ||
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| using namespace llvm; | ||
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| /** | ||
| * This function does the standard LLVM optimization. | ||
| * This function is based on main() of llvm/tools/opt/opt.cpp. | ||
| * Use LLVMGetHostCPUName() for the cpu argument. | ||
| */ | ||
| void optimizeModule( | ||
| LLVMModuleRef moduleRef, | ||
| const char* cpu, | ||
| unsigned optLevel, | ||
| unsigned sizeLevel | ||
| ) { | ||
| Module *module = unwrap(moduleRef); | ||
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| std::string error; | ||
| EngineBuilder engineBuilder; | ||
| TargetMachine *machine = engineBuilder | ||
| .setMCPU(cpu) | ||
| .setErrorStr(&error) | ||
| .selectTarget(); | ||
| if (machine == nullptr) { | ||
| throw std::runtime_error(error); | ||
| } | ||
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| module->setTargetTriple(machine->getTargetTriple().str()); | ||
| module->setDataLayout(machine->createDataLayout()); | ||
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| legacy::PassManager passes; | ||
| passes.add(new TargetLibraryInfoWrapperPass(machine->getTargetTriple())); | ||
| passes.add(createTargetTransformInfoWrapperPass(machine->getTargetIRAnalysis())); | ||
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| legacy::FunctionPassManager fnPasses(module); | ||
| fnPasses.add(createTargetTransformInfoWrapperPass(machine->getTargetIRAnalysis())); | ||
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| // AddOptimizationPasses | ||
| PassManagerBuilder builder1; | ||
| builder1.OptLevel = optLevel; | ||
| builder1.SizeLevel = sizeLevel; | ||
| builder1.Inliner = createFunctionInliningPass(optLevel, sizeLevel, false); | ||
| builder1.LoopVectorize = optLevel > 1 && sizeLevel < 2; | ||
| builder1.SLPVectorize = optLevel > 1 && sizeLevel < 2; | ||
| machine->adjustPassManager(builder1); | ||
| builder1.populateFunctionPassManager(fnPasses); | ||
| builder1.populateModulePassManager(passes); | ||
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| // AddStandardLinkPasses | ||
| PassManagerBuilder builder2; | ||
| builder2.VerifyInput = true; | ||
| builder2.Inliner = createFunctionInliningPass(); | ||
| builder2.populateLTOPassManager(passes); | ||
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| fnPasses.doInitialization(); | ||
| for (Function &func : *module) { | ||
| fnPasses.run(func); | ||
| } | ||
| fnPasses.doFinalization(); | ||
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| passes.add(createVerifierPass()); | ||
| passes.run(*module); | ||
| } | ||
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| /** | ||
| * This function is similar to LLVMCreateJITCompilerForModule() but does CPU specific optimization. | ||
| * Use LLVMGetHostCPUName() for the cpu argument. | ||
| */ | ||
| void createOptimizedJITCompilerForModule( | ||
| LLVMExecutionEngineRef *outJIT, | ||
| LLVMModuleRef moduleRef, | ||
| const char* cpu, | ||
| unsigned optLevel | ||
| ) { | ||
| std::string error; | ||
| EngineBuilder engineBuilder(std::unique_ptr<Module>(unwrap(moduleRef))); | ||
| ExecutionEngine *ee = engineBuilder | ||
| .setEngineKind(EngineKind::JIT) | ||
| .setMCPU(cpu) | ||
| .setOptLevel(static_cast<CodeGenOpt::Level>(optLevel)) | ||
| .setErrorStr(&error) | ||
| .create(); | ||
| if (ee == nullptr) { | ||
| throw std::runtime_error(error); | ||
| } | ||
| ee->finalizeObject(); | ||
| *outJIT = wrap(ee); | ||
| } | ||
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| #endif |