slang_backend.cpp revision 41ebf534161bb67f6207a070c1f6a895dc853408
1c383a500aa59423264811be3874461bf8adbfea0Zonr Chang/* 2c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * Copyright 2010, The Android Open Source Project 3c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * 4c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * Licensed under the Apache License, Version 2.0 (the "License"); 5c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * you may not use this file except in compliance with the License. 6c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * You may obtain a copy of the License at 7c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * 8c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * http://www.apache.org/licenses/LICENSE-2.0 9c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * 10c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * Unless required by applicable law or agreed to in writing, software 11c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * distributed under the License is distributed on an "AS IS" BASIS, 12c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * See the License for the specific language governing permissions and 14c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * limitations under the License. 15c383a500aa59423264811be3874461bf8adbfea0Zonr Chang */ 16c383a500aa59423264811be3874461bf8adbfea0Zonr Chang 176315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr#include "slang_backend.h" 18462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 199ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "llvm/Module.h" 209ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "llvm/Metadata.h" 219ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "llvm/LLVMContext.h" 22462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2341ebf534161bb67f6207a070c1f6a895dc853408Zonr Chang#include "llvm/Target/TargetData.h" 249ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "llvm/Target/TargetMachine.h" 259ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "llvm/Target/TargetOptions.h" 269ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "llvm/Target/TargetRegistry.h" 279ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "llvm/Target/SubtargetFeature.h" 28462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 299ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "llvm/CodeGen/RegAllocRegistry.h" 309ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "llvm/CodeGen/SchedulerRegistry.h" 31462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 329ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "llvm/Assembly/PrintModulePass.h" 339ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "llvm/Bitcode/ReaderWriter.h" 34462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 359ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "clang/AST/Decl.h" 369ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "clang/AST/DeclGroup.h" 379ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "clang/AST/ASTContext.h" 38462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 399ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "clang/Basic/TargetInfo.h" 409ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "clang/Basic/Diagnostic.h" 419ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "clang/Basic/TargetOptions.h" 42462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 433a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang#include "clang/Frontend/CodeGenOptions.h" 449ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "clang/Frontend/FrontendDiagnostic.h" 45462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 469ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "clang/CodeGen/ModuleBuilder.h" 47462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 486315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr#include "slang.h" 496315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr 509ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liaousing namespace slang; 51462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 523a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Changvoid Backend::CreateFunctionPasses() { 533a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang if (!mPerFunctionPasses) { 543a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang mPerFunctionPasses = new llvm::FunctionPassManager(mpModule); 5541ebf534161bb67f6207a070c1f6a895dc853408Zonr Chang mPerFunctionPasses->add(new llvm::TargetData(mpModule)); 563a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang 573a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang llvm::createStandardFunctionPasses(mPerFunctionPasses, 583a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang mCodeGenOpts.OptimizationLevel); 593a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang } 603a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang return; 613a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang} 623a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang 633a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Changvoid Backend::CreateModulePasses() { 643a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang if (!mPerModulePasses) { 653a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang mPerModulePasses = new llvm::PassManager(); 6641ebf534161bb67f6207a070c1f6a895dc853408Zonr Chang mPerModulePasses->add(new llvm::TargetData(mpModule)); 673a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang 683a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang llvm::createStandardModulePasses(mPerModulePasses, 693a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang mCodeGenOpts.OptimizationLevel, 703a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang mCodeGenOpts.OptimizeSize, 713a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang mCodeGenOpts.UnitAtATime, 723a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang mCodeGenOpts.UnrollLoops, 733a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang /* SimplifyLibCalls = */true, 743a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang /* HaveExceptions = */false, 753a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang /* InliningPass = */NULL); 763a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang } 773a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang return; 783a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang} 793a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang 80462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liaobool Backend::CreateCodeGenPasses() { 813a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang if ((mOT != Slang::OT_Assembly) && (mOT != Slang::OT_Object)) 829ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return true; 83462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 849ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Now we add passes for code emitting 859ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (mCodeGenPasses) { 86462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao return true; 879ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } else { 889ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mCodeGenPasses = new llvm::FunctionPassManager(mpModule); 8941ebf534161bb67f6207a070c1f6a895dc853408Zonr Chang mCodeGenPasses->add(new llvm::TargetData(mpModule)); 909ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 919ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 929ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Create the TargetMachine for generating code. 939ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao std::string Triple = mpModule->getTargetTriple(); 949ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 959ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao std::string Error; 969ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao const llvm::Target* TargetInfo = 979ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::TargetRegistry::lookupTarget(Triple, Error); 986315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr if (TargetInfo == NULL) { 999ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mDiags.Report(clang::diag::err_fe_unable_to_create_target) << Error; 1009ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return false; 1019ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 1029ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1039ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::NoFramePointerElim = mCodeGenOpts.DisableFPElim; 1049ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1059ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Use hardware FPU. 1069ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // 1079ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // FIXME: Need to detect the CPU capability and decide whether to use softfp. 1089ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // To use softfp, change following 2 lines to 1099ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // 1109ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // llvm::FloatABIType = llvm::FloatABI::Soft; 1119ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // llvm::UseSoftFloat = true; 1129ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::FloatABIType = llvm::FloatABI::Hard; 1139ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::UseSoftFloat = false; 1149ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1159ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // BCC needs all unknown symbols resolved at compilation time. So we don't 1169ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // need any relocation model. 1179ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::TargetMachine::setRelocationModel(llvm::Reloc::Static); 1189ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1199ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 12041ebf534161bb67f6207a070c1f6a895dc853408Zonr Chang // This is set for the linker (specify how large of the virtual addresses we 12141ebf534161bb67f6207a070c1f6a895dc853408Zonr Chang // can access for all unknown symbols.) 12241ebf534161bb67f6207a070c1f6a895dc853408Zonr Chang if (mpModule->getPointerSize() == llvm::Module::Pointer32) 1239ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::TargetMachine::setCodeModel(llvm::CodeModel::Small); 12441ebf534161bb67f6207a070c1f6a895dc853408Zonr Chang else 12541ebf534161bb67f6207a070c1f6a895dc853408Zonr Chang // The target may have pointer size greater than 32 (e.g. x86_64 12641ebf534161bb67f6207a070c1f6a895dc853408Zonr Chang // architecture) may need large data address model 12741ebf534161bb67f6207a070c1f6a895dc853408Zonr Chang llvm::TargetMachine::setCodeModel(llvm::CodeModel::Medium); 1289ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1299ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Setup feature string 1309ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao std::string FeaturesStr; 1319ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (mTargetOpts.CPU.size() || mTargetOpts.Features.size()) { 1329ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::SubtargetFeatures Features; 1339ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1349ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao Features.setCPU(mTargetOpts.CPU); 1359ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1369ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao for (std::vector<std::string>::const_iterator 1379ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I = mTargetOpts.Features.begin(), E = mTargetOpts.Features.end(); 1389ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I != E; 1399ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I++) 1409ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao Features.AddFeature(*I); 1419ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1429ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao FeaturesStr = Features.getString(); 1439ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 1449ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::TargetMachine *TM = 1459ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao TargetInfo->createTargetMachine(Triple, FeaturesStr); 1469ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1479ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Register scheduler 1489ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::RegisterScheduler::setDefault(llvm::createDefaultScheduler); 1499ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1509ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Register allocation policy: 1519ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // createFastRegisterAllocator: fast but bad quality 1529ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // createLinearScanRegisterAllocator: not so fast but good quality 1539ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::RegisterRegAlloc::setDefault((mCodeGenOpts.OptimizationLevel == 0) ? 1549ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::createFastRegisterAllocator : 1559ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::createLinearScanRegisterAllocator); 1569ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1579ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::CodeGenOpt::Level OptLevel = llvm::CodeGenOpt::Default; 1589ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (mCodeGenOpts.OptimizationLevel == 0) 1599ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao OptLevel = llvm::CodeGenOpt::None; 1609ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao else if (mCodeGenOpts.OptimizationLevel == 3) 1619ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao OptLevel = llvm::CodeGenOpt::Aggressive; 1629ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1639ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::TargetMachine::CodeGenFileType CGFT = 1646315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr llvm::TargetMachine::CGFT_AssemblyFile; 1653a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang if (mOT == Slang::OT_Object) 1669ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao CGFT = llvm::TargetMachine::CGFT_ObjectFile; 1679ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (TM->addPassesToEmitFile(*mCodeGenPasses, FormattedOutStream, 1689ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao CGFT, OptLevel)) { 1699ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mDiags.Report(clang::diag::err_fe_unable_to_interface_with_target); 1709ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return false; 1719ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 1729ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1739ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return true; 174462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 175462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 1769ef2f785e0cc490af678dfd685995dec787321ffShih-wei LiaoBackend::Backend(clang::Diagnostic &Diags, 1779ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao const clang::CodeGenOptions &CodeGenOpts, 1789ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao const clang::TargetOptions &TargetOpts, 1799ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao const PragmaList &Pragmas, 1809ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::raw_ostream *OS, 1813a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang Slang::OutputType OT) 1826315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr : ASTConsumer(), 1836315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mCodeGenOpts(CodeGenOpts), 1846315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mTargetOpts(TargetOpts), 1856315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mpOS(OS), 1863a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang mOT(OT), 1876315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mGen(NULL), 1886315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mPerFunctionPasses(NULL), 1896315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mPerModulePasses(NULL), 1906315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mCodeGenPasses(NULL), 1916315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mLLVMContext(llvm::getGlobalContext()), 1926315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mDiags(Diags), 1936315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mpModule(NULL), 1946315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mPragmas(Pragmas) { 1956315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr FormattedOutStream.setStream(*mpOS, 1966315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr llvm::formatted_raw_ostream::PRESERVE_STREAM); 1979ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mGen = CreateLLVMCodeGen(mDiags, "", mCodeGenOpts, mLLVMContext); 1989ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 199462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 200462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2019ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liaovoid Backend::Initialize(clang::ASTContext &Ctx) { 2029ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mGen->Initialize(Ctx); 203462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2049ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mpModule = mGen->GetModule(); 205462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2069ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 207462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 208462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2099ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liaovoid Backend::HandleTopLevelDecl(clang::DeclGroupRef D) { 2109ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mGen->HandleTopLevelDecl(D); 2119ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 212462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 213462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2149ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liaovoid Backend::HandleTranslationUnit(clang::ASTContext &Ctx) { 2159ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mGen->HandleTranslationUnit(Ctx); 216462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2179ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Here, we complete a translation unit (whole translation unit is now in LLVM 2189ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // IR). Now, interact with LLVM backend to generate actual machine code (asm 2199ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // or machine code, whatever.) 220462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2219ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Silently ignore if we weren't initialized for some reason. 22241ebf534161bb67f6207a070c1f6a895dc853408Zonr Chang if (!mpModule) 2239ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 224462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2259ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::Module *M = mGen->ReleaseModule(); 2269ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (!M) { 2279ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // The module has been released by IR gen on failures, do not double free. 2289ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mpModule = NULL; 2299ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 2309ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 2319ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 2329ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao assert(mpModule == M && "Unexpected module change during LLVM IR generation"); 2339ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 2349ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Insert #pragma information into metadata section of module 2359ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (!mPragmas.empty()) { 2369ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::NamedMDNode *PragmaMetadata = 2379ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mpModule->getOrInsertNamedMetadata(Slang::PragmaMetadataName); 2389ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao for (PragmaList::const_iterator I = mPragmas.begin(), E = mPragmas.end(); 2399ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I != E; 2409ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I++) { 2419ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::SmallVector<llvm::Value*, 2> Pragma; 2429ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Name goes first 2439ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao Pragma.push_back(llvm::MDString::get(mLLVMContext, I->first)); 2449ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // And then value 2459ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao Pragma.push_back(llvm::MDString::get(mLLVMContext, I->second)); 2469ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Create MDNode and insert into PragmaMetadata 2479ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao PragmaMetadata->addOperand( 2489ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::MDNode::get(mLLVMContext, Pragma.data(), Pragma.size())); 249462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao } 2509ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 251462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2529ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao HandleTranslationUnitEx(Ctx); 253462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2549ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Create passes for optimization and code emission 255462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2569ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Create and run per-function passes 2579ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao CreateFunctionPasses(); 2589ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (mPerFunctionPasses) { 2599ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mPerFunctionPasses->doInitialization(); 260462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2619ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao for (llvm::Module::iterator I = mpModule->begin(), E = mpModule->end(); 2629ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I != E; 2639ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I++) 2649ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (!I->isDeclaration()) 2659ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mPerFunctionPasses->run(*I); 266462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2679ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mPerFunctionPasses->doFinalization(); 2689ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 269462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2709ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Create and run module passes 2719ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao CreateModulePasses(); 2729ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (mPerModulePasses) 2739ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mPerModulePasses->run(*mpModule); 2749ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 2753a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang switch (mOT) { 2763a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang case Slang::OT_Assembly: 2773a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang case Slang::OT_Object: { 2786315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr if (!CreateCodeGenPasses()) 2799ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 280462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2819ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mCodeGenPasses->doInitialization(); 282462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2839ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao for (llvm::Module::iterator I = mpModule->begin(), E = mpModule->end(); 2849ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I != E; 2859ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I++) 2866315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr if (!I->isDeclaration()) 2879ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mCodeGenPasses->run(*I); 2889ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 2899ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mCodeGenPasses->doFinalization(); 2909ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao break; 2919ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 2923a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang case Slang::OT_LLVMAssembly: { 2939ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::PassManager *LLEmitPM = new llvm::PassManager(); 2949ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao LLEmitPM->add(llvm::createPrintModulePass(&FormattedOutStream)); 2959ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao LLEmitPM->run(*mpModule); 2969ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao break; 297462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao } 2983a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang case Slang::OT_Bitcode: { 2999ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::PassManager *BCEmitPM = new llvm::PassManager(); 3009ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao BCEmitPM->add(llvm::createBitcodeWriterPass(FormattedOutStream)); 3019ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao BCEmitPM->run(*mpModule); 3029ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao break; 3039ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 3043a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang case Slang::OT_Nothing: { 3059ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 3069ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 3079ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao default: { 3089ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao assert(false && "Unknown output type"); 3099ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 3109ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 311462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 3129ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao FormattedOutStream.flush(); 3139ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 3149ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 315462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 316462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 3179ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liaovoid Backend::HandleTagDeclDefinition(clang::TagDecl *D) { 3189ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mGen->HandleTagDeclDefinition(D); 3199ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 320462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 321462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 3229ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liaovoid Backend::CompleteTentativeDefinition(clang::VarDecl *D) { 3239ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mGen->CompleteTentativeDefinition(D); 3249ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 325462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 326462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 327462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei LiaoBackend::~Backend() { 3289ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao delete mpModule; 3299ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao delete mGen; 3309ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao delete mPerFunctionPasses; 3319ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao delete mPerModulePasses; 3329ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao delete mCodeGenPasses; 3339ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 334462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 335