slang_backend.cpp revision c383a500aa59423264811be3874461bf8adbfea0
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 239ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "llvm/Target/TargetMachine.h" 249ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "llvm/Target/TargetOptions.h" 259ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "llvm/Target/TargetRegistry.h" 269ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "llvm/Target/SubtargetFeature.h" 27462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 289ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "llvm/CodeGen/RegAllocRegistry.h" 299ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "llvm/CodeGen/SchedulerRegistry.h" 30462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 319ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "llvm/Assembly/PrintModulePass.h" 329ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "llvm/Bitcode/ReaderWriter.h" 33462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 349ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "clang/AST/Decl.h" 359ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "clang/AST/DeclGroup.h" 369ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "clang/AST/ASTContext.h" 37462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 389ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "clang/Basic/TargetInfo.h" 399ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "clang/Basic/Diagnostic.h" 409ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "clang/Basic/TargetOptions.h" 41462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 423a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang#include "clang/Frontend/CodeGenOptions.h" 439ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "clang/Frontend/FrontendDiagnostic.h" 44462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 459ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "clang/CodeGen/ModuleBuilder.h" 46462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 476315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr#include "slang.h" 486315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr 499ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liaousing namespace slang; 50462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 513a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Changvoid Backend::CreateFunctionPasses() { 523a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang if (!mPerFunctionPasses) { 533a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang mPerFunctionPasses = new llvm::FunctionPassManager(mpModule); 543a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang mPerFunctionPasses->add(new llvm::TargetData(*mpTargetData)); 553a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang 563a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang llvm::createStandardFunctionPasses(mPerFunctionPasses, 573a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang mCodeGenOpts.OptimizationLevel); 583a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang } 593a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang return; 603a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang} 613a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang 623a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Changvoid Backend::CreateModulePasses() { 633a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang if (!mPerModulePasses) { 643a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang mPerModulePasses = new llvm::PassManager(); 653a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang mPerModulePasses->add(new llvm::TargetData(*mpTargetData)); 663a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang 673a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang llvm::createStandardModulePasses(mPerModulePasses, 683a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang mCodeGenOpts.OptimizationLevel, 693a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang mCodeGenOpts.OptimizeSize, 703a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang mCodeGenOpts.UnitAtATime, 713a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang mCodeGenOpts.UnrollLoops, 723a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang /* SimplifyLibCalls = */true, 733a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang /* HaveExceptions = */false, 743a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang /* InliningPass = */NULL); 753a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang } 763a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang return; 773a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang} 783a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang 79462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liaobool Backend::CreateCodeGenPasses() { 803a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang if ((mOT != Slang::OT_Assembly) && (mOT != Slang::OT_Object)) 819ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return true; 82462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 839ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Now we add passes for code emitting 849ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (mCodeGenPasses) { 85462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao return true; 869ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } else { 879ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mCodeGenPasses = new llvm::FunctionPassManager(mpModule); 889ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mCodeGenPasses->add(new llvm::TargetData(*mpTargetData)); 899ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 909ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 919ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Create the TargetMachine for generating code. 929ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao std::string Triple = mpModule->getTargetTriple(); 939ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 949ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao std::string Error; 959ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao const llvm::Target* TargetInfo = 969ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::TargetRegistry::lookupTarget(Triple, Error); 976315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr if (TargetInfo == NULL) { 989ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mDiags.Report(clang::diag::err_fe_unable_to_create_target) << Error; 999ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return false; 1009ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 1019ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1029ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::NoFramePointerElim = mCodeGenOpts.DisableFPElim; 1039ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1049ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Use hardware FPU. 1059ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // 1069ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // FIXME: Need to detect the CPU capability and decide whether to use softfp. 1079ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // To use softfp, change following 2 lines to 1089ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // 1099ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // llvm::FloatABIType = llvm::FloatABI::Soft; 1109ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // llvm::UseSoftFloat = true; 1119ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::FloatABIType = llvm::FloatABI::Hard; 1129ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::UseSoftFloat = false; 1139ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1149ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // BCC needs all unknown symbols resolved at compilation time. So we don't 1159ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // need any relocation model. 1169ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::TargetMachine::setRelocationModel(llvm::Reloc::Static); 1179ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1189ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1199ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // The target with pointer size greater than 32 (e.g. x86_64 architecture) may 1209ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // need large data address model 1219ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (mpTargetData->getPointerSizeInBits() > 32) 1229ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::TargetMachine::setCodeModel(llvm::CodeModel::Medium); 1239ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao else 1249ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // This is set for the linker (specify how large of the virtual addresses we 1259ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // can access for all unknown symbols.) 1269ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1279ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::TargetMachine::setCodeModel(llvm::CodeModel::Small); 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 mpTargetData(NULL), 1886315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mGen(NULL), 1896315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mPerFunctionPasses(NULL), 1906315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mPerModulePasses(NULL), 1916315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mCodeGenPasses(NULL), 1926315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mLLVMContext(llvm::getGlobalContext()), 1936315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mDiags(Diags), 1946315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mpModule(NULL), 1956315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mPragmas(Pragmas) { 1966315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr FormattedOutStream.setStream(*mpOS, 1976315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr llvm::formatted_raw_ostream::PRESERVE_STREAM); 1989ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mGen = CreateLLVMCodeGen(mDiags, "", mCodeGenOpts, mLLVMContext); 1999ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 200462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 201462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2029ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liaovoid Backend::Initialize(clang::ASTContext &Ctx) { 2039ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mGen->Initialize(Ctx); 204462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2059ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mpModule = mGen->GetModule(); 2069ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mpTargetData = new llvm::TargetData(Slang::TargetDescription); 207462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2089ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 209462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 210462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2119ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liaovoid Backend::HandleTopLevelDecl(clang::DeclGroupRef D) { 2129ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mGen->HandleTopLevelDecl(D); 2139ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 214462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 215462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2169ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liaovoid Backend::HandleTranslationUnit(clang::ASTContext &Ctx) { 2179ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mGen->HandleTranslationUnit(Ctx); 218462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2199ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Here, we complete a translation unit (whole translation unit is now in LLVM 2209ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // IR). Now, interact with LLVM backend to generate actual machine code (asm 2219ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // or machine code, whatever.) 222462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2239ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Silently ignore if we weren't initialized for some reason. 2249ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (!mpModule || !mpTargetData) 2259ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 226462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2279ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::Module *M = mGen->ReleaseModule(); 2289ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (!M) { 2299ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // The module has been released by IR gen on failures, do not double free. 2309ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mpModule = NULL; 2319ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 2329ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 2339ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 2349ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao assert(mpModule == M && "Unexpected module change during LLVM IR generation"); 2359ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 2369ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Insert #pragma information into metadata section of module 2379ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (!mPragmas.empty()) { 2389ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::NamedMDNode *PragmaMetadata = 2399ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mpModule->getOrInsertNamedMetadata(Slang::PragmaMetadataName); 2409ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao for (PragmaList::const_iterator I = mPragmas.begin(), E = mPragmas.end(); 2419ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I != E; 2429ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I++) { 2439ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::SmallVector<llvm::Value*, 2> Pragma; 2449ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Name goes first 2459ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao Pragma.push_back(llvm::MDString::get(mLLVMContext, I->first)); 2469ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // And then value 2479ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao Pragma.push_back(llvm::MDString::get(mLLVMContext, I->second)); 2489ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Create MDNode and insert into PragmaMetadata 2499ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao PragmaMetadata->addOperand( 2509ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::MDNode::get(mLLVMContext, Pragma.data(), Pragma.size())); 251462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao } 2529ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 253462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2549ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao HandleTranslationUnitEx(Ctx); 255462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2569ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Create passes for optimization and code emission 257462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2589ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Create and run per-function passes 2599ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao CreateFunctionPasses(); 2609ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (mPerFunctionPasses) { 2619ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mPerFunctionPasses->doInitialization(); 262462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2639ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao for (llvm::Module::iterator I = mpModule->begin(), E = mpModule->end(); 2649ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I != E; 2659ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I++) 2669ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (!I->isDeclaration()) 2679ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mPerFunctionPasses->run(*I); 268462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2699ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mPerFunctionPasses->doFinalization(); 2709ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 271462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2729ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Create and run module passes 2739ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao CreateModulePasses(); 2749ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (mPerModulePasses) 2759ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mPerModulePasses->run(*mpModule); 2769ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 2773a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang switch (mOT) { 2783a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang case Slang::OT_Assembly: 2793a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang case Slang::OT_Object: { 2806315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr if (!CreateCodeGenPasses()) 2819ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 282462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2839ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mCodeGenPasses->doInitialization(); 284462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2859ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao for (llvm::Module::iterator I = mpModule->begin(), E = mpModule->end(); 2869ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I != E; 2879ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I++) 2886315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr if (!I->isDeclaration()) 2899ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mCodeGenPasses->run(*I); 2909ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 2919ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mCodeGenPasses->doFinalization(); 2929ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao break; 2939ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 2943a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang case Slang::OT_LLVMAssembly: { 2959ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::PassManager *LLEmitPM = new llvm::PassManager(); 2969ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao LLEmitPM->add(llvm::createPrintModulePass(&FormattedOutStream)); 2979ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao LLEmitPM->run(*mpModule); 2989ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao break; 299462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao } 3003a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang case Slang::OT_Bitcode: { 3019ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::PassManager *BCEmitPM = new llvm::PassManager(); 3029ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao BCEmitPM->add(llvm::createBitcodeWriterPass(FormattedOutStream)); 3039ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao BCEmitPM->run(*mpModule); 3049ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao break; 3059ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 3063a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang case Slang::OT_Nothing: { 3079ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 3089ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 3099ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao default: { 3109ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao assert(false && "Unknown output type"); 3119ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 3129ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 313462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 3149ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao FormattedOutStream.flush(); 3159ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 3169ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 317462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 318462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 3199ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liaovoid Backend::HandleTagDeclDefinition(clang::TagDecl *D) { 3209ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mGen->HandleTagDeclDefinition(D); 3219ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 322462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 323462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 3249ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liaovoid Backend::CompleteTentativeDefinition(clang::VarDecl *D) { 3259ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mGen->CompleteTentativeDefinition(D); 3269ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 327462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 328462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 329462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei LiaoBackend::~Backend() { 3309ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao delete mpModule; 3319ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao delete mpTargetData; 3329ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao delete mGen; 3339ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao delete mPerFunctionPasses; 3349ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao delete mPerModulePasses; 3359ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao delete mCodeGenPasses; 3369ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 337462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 338