15f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===--- CodeGenModule.cpp - Emit LLVM Code from ASTs for a Module --------===// 25f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 35f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// The LLVM Compiler Infrastructure 45f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 50bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// This file is distributed under the University of Illinois Open Source 60bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// License. See LICENSE.TXT for details. 75f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 85f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 95f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// This coordinates the per-module state used while generating code. 115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "CodeGenModule.h" 15bd3606426d389370616126af969904ec493cb105Chris Lattner#include "CGDebugInfo.h" 165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "CodeGenFunction.h" 173d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman#include "CodeGenTBAA.h" 180dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar#include "CGCall.h" 196c0aa5ff6e6253db0f993053599e2a52b5b93b2dPeter Collingbourne#include "CGCUDARuntime.h" 204c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall#include "CGCXXABI.h" 21af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar#include "CGObjCRuntime.h" 228c25fc584ce27d59df9923f153e8a132dde58d04Peter Collingbourne#include "CGOpenCLRuntime.h" 2382d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov#include "TargetInfo.h" 2406057cef0bcd7804e80f3ce2bbe352178396c715Chandler Carruth#include "clang/Frontend/CodeGenOptions.h" 255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/AST/ASTContext.h" 26687cc4a850b59116efee061018f0d8df50728b82Ken Dyck#include "clang/AST/CharUnits.h" 27c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar#include "clang/AST/DeclObjC.h" 2821ef7ae45c8b91f23cf5eab2263421bb398a644bChris Lattner#include "clang/AST/DeclCXX.h" 29af896897f7485176f43d40c4adced7efb0fb2b06Douglas Gregor#include "clang/AST/DeclTemplate.h" 3014110477887e3dc168ffc6c191e72d705051f99ePeter Collingbourne#include "clang/AST/Mangle.h" 311a5e0d7f18485e4fb958f96dcddff3e4486a4069Anders Carlsson#include "clang/AST/RecordLayout.h" 32a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola#include "clang/AST/RecursiveASTVisitor.h" 33bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola#include "clang/Basic/Builtins.h" 342c8569d5f43f7de1fb993e84c95ea571dd9ac55eChris Lattner#include "clang/Basic/Diagnostic.h" 358bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman#include "clang/Basic/SourceManager.h" 365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Basic/TargetInfo.h" 37e9b7d8ace8674585818990cff585daae7745bd88Steve Naroff#include "clang/Basic/ConvertUTF.h" 38ec9426ca6039279bcc99bc2c625bb2abe4f0353dNate Begeman#include "llvm/CallingConv.h" 39bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner#include "llvm/Module.h" 405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "llvm/Intrinsics.h" 41d5b8902c0329d80a216803b58dc3b689349a0c11Chris Lattner#include "llvm/LLVMContext.h" 4219b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl#include "llvm/ADT/APSInt.h" 436374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall#include "llvm/ADT/Triple.h" 44c4850c2aa4c281a352e228aafc51fb1e30dcad02Rafael Espindola#include "llvm/Target/Mangler.h" 4520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov#include "llvm/Target/TargetData.h" 466ba728d9687b2617793f5afd410650a8d6c71080Gabor Greif#include "llvm/Support/CallSite.h" 4778f7ece00e2ddfb64d4ed72a7be770b5b9b805e3Chris Lattner#include "llvm/Support/ErrorHandling.h" 485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerusing namespace clang; 495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerusing namespace CodeGen; 505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5177f68bb90af93b95045fb994e7cd68137adcc132Julien Lerougestatic const char AnnotationSection[] = "llvm.metadata"; 5277f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge 53f16aa103d3afd42fbca2ab346f191bf745cec092John McCallstatic CGCXXABI &createCXXABI(CodeGenModule &CGM) { 54bcfd1f55bfbb3e5944cd5e03d07b343e280838c4Douglas Gregor switch (CGM.getContext().getTargetInfo().getCXXABI()) { 55f16aa103d3afd42fbca2ab346f191bf745cec092John McCall case CXXABI_ARM: return *CreateARMCXXABI(CGM); 56f16aa103d3afd42fbca2ab346f191bf745cec092John McCall case CXXABI_Itanium: return *CreateItaniumCXXABI(CGM); 57f16aa103d3afd42fbca2ab346f191bf745cec092John McCall case CXXABI_Microsoft: return *CreateMicrosoftCXXABI(CGM); 58f16aa103d3afd42fbca2ab346f191bf745cec092John McCall } 59f16aa103d3afd42fbca2ab346f191bf745cec092John McCall 60f16aa103d3afd42fbca2ab346f191bf745cec092John McCall llvm_unreachable("invalid C++ ABI kind"); 61f16aa103d3afd42fbca2ab346f191bf745cec092John McCall} 62f16aa103d3afd42fbca2ab346f191bf745cec092John McCall 635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 642811ccf48d6d898c42cc4cfad37abedb36236d20Chandler CarruthCodeGenModule::CodeGenModule(ASTContext &C, const CodeGenOptions &CGO, 65468ec6c0266e48fccb26ce50d5b915c645bb3c7bJohn McCall llvm::Module &M, const llvm::TargetData &TD, 66d6471f7c1921c7802804ce3ff6fe9768310f72b9David Blaikie DiagnosticsEngine &diags) 674e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie : Context(C), LangOpts(C.getLangOpts()), CodeGenOpts(CGO), TheModule(M), 68468ec6c0266e48fccb26ce50d5b915c645bb3c7bJohn McCall TheTargetData(TD), TheTargetCodeGenInfo(0), Diags(diags), 69f16aa103d3afd42fbca2ab346f191bf745cec092John McCall ABI(createCXXABI(*this)), 70de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall Types(*this), 713d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman TBAA(0), 726c0aa5ff6e6253db0f993053599e2a52b5b93b2dPeter Collingbourne VTables(*this), ObjCRuntime(0), OpenCLRuntime(0), CUDARuntime(0), 73b49bd27b334a6c4e3bf9d810a7d5b022578f1194Dan Gohman DebugInfo(0), ARCData(0), NoObjCARCExceptionsMetadata(0), 74b49bd27b334a6c4e3bf9d810a7d5b022578f1194Dan Gohman RRData(0), CFConstantStringClassRef(0), 756c0aa5ff6e6253db0f993053599e2a52b5b93b2dPeter Collingbourne ConstantStringClassRef(0), NSConstantStringType(0), 76673431a2986f750b4d8fadb57abf3f00db27bbbdDaniel Dunbar VMContext(M.getContext()), 77673431a2986f750b4d8fadb57abf3f00db27bbbdDaniel Dunbar NSConcreteGlobalBlock(0), NSConcreteStackBlock(0), 78d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall BlockObjectAssign(0), BlockObjectDispose(0), 79d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall BlockDescriptorType(0), GenericBlockLiteralType(0) { 808b418685e9e4f02f4eb2a76e1ec063e07552b68dChris Lattner 818b418685e9e4f02f4eb2a76e1ec063e07552b68dChris Lattner // Initialize the type cache. 828b418685e9e4f02f4eb2a76e1ec063e07552b68dChris Lattner llvm::LLVMContext &LLVMContext = M.getContext(); 838b418685e9e4f02f4eb2a76e1ec063e07552b68dChris Lattner VoidTy = llvm::Type::getVoidTy(LLVMContext); 848b418685e9e4f02f4eb2a76e1ec063e07552b68dChris Lattner Int8Ty = llvm::Type::getInt8Ty(LLVMContext); 858b418685e9e4f02f4eb2a76e1ec063e07552b68dChris Lattner Int16Ty = llvm::Type::getInt16Ty(LLVMContext); 868b418685e9e4f02f4eb2a76e1ec063e07552b68dChris Lattner Int32Ty = llvm::Type::getInt32Ty(LLVMContext); 878b418685e9e4f02f4eb2a76e1ec063e07552b68dChris Lattner Int64Ty = llvm::Type::getInt64Ty(LLVMContext); 888b418685e9e4f02f4eb2a76e1ec063e07552b68dChris Lattner FloatTy = llvm::Type::getFloatTy(LLVMContext); 898b418685e9e4f02f4eb2a76e1ec063e07552b68dChris Lattner DoubleTy = llvm::Type::getDoubleTy(LLVMContext); 908b418685e9e4f02f4eb2a76e1ec063e07552b68dChris Lattner PointerWidthInBits = C.getTargetInfo().getPointerWidth(0); 918b418685e9e4f02f4eb2a76e1ec063e07552b68dChris Lattner PointerAlignInBytes = 928b418685e9e4f02f4eb2a76e1ec063e07552b68dChris Lattner C.toCharUnitsFromBits(C.getTargetInfo().getPointerAlign(0)).getQuantity(); 938b418685e9e4f02f4eb2a76e1ec063e07552b68dChris Lattner IntTy = llvm::IntegerType::get(LLVMContext, C.getTargetInfo().getIntWidth()); 948b418685e9e4f02f4eb2a76e1ec063e07552b68dChris Lattner IntPtrTy = llvm::IntegerType::get(LLVMContext, PointerWidthInBits); 958b418685e9e4f02f4eb2a76e1ec063e07552b68dChris Lattner Int8PtrTy = Int8Ty->getPointerTo(0); 968b418685e9e4f02f4eb2a76e1ec063e07552b68dChris Lattner Int8PtrPtrTy = Int8PtrTy->getPointerTo(0); 978b418685e9e4f02f4eb2a76e1ec063e07552b68dChris Lattner 984e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (LangOpts.ObjC1) 998c25fc584ce27d59df9923f153e8a132dde58d04Peter Collingbourne createObjCRuntime(); 1004e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (LangOpts.OpenCL) 1018c25fc584ce27d59df9923f153e8a132dde58d04Peter Collingbourne createOpenCLRuntime(); 1024e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (LangOpts.CUDA) 1036c0aa5ff6e6253db0f993053599e2a52b5b93b2dPeter Collingbourne createCUDARuntime(); 104e8b9f5b8ea60983c4a74cb8b63879616b914b65aSanjiv Gupta 1053d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman // Enable TBAA unless it's suppressed. 1063d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman if (!CodeGenOpts.RelaxedAliasing && CodeGenOpts.OptimizationLevel > 0) 1074e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie TBAA = new CodeGenTBAA(Context, VMContext, getLangOpts(), 1080b5c4fc2ae3b503c2b1f354bf52b718aa50a6aeeDan Gohman ABI.getMangleContext()); 1093d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman 110e8ba8d78a258ec992d3521eebdae8324db777b14Nick Lewycky // If debug info or coverage generation is enabled, create the CGDebugInfo 111e8ba8d78a258ec992d3521eebdae8324db777b14Nick Lewycky // object. 112e8ba8d78a258ec992d3521eebdae8324db777b14Nick Lewycky if (CodeGenOpts.DebugInfo || CodeGenOpts.EmitGcovArcs || 113e8ba8d78a258ec992d3521eebdae8324db777b14Nick Lewycky CodeGenOpts.EmitGcovNotes) 114e8ba8d78a258ec992d3521eebdae8324db777b14Nick Lewycky DebugInfo = new CGDebugInfo(*this); 115d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall 116d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall Block.GlobalUniqueCount = 0; 1175936e33bf74dd6bf126ceee0f6169a2593d03a69John McCall 1184e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (C.getLangOpts().ObjCAutoRefCount) 119f85e193739c953358c865005855253af4f68a497John McCall ARCData = new ARCEntrypoints(); 120f85e193739c953358c865005855253af4f68a497John McCall RRData = new RREntrypoints(); 1212b94fe35edf951a14ecd32b21f7ebcc2e3754c67Chris Lattner} 1222b94fe35edf951a14ecd32b21f7ebcc2e3754c67Chris Lattner 1232b94fe35edf951a14ecd32b21f7ebcc2e3754c67Chris LattnerCodeGenModule::~CodeGenModule() { 124e926523105dd2604ccd5c101605dea43c5269965Peter Collingbourne delete ObjCRuntime; 1258c25fc584ce27d59df9923f153e8a132dde58d04Peter Collingbourne delete OpenCLRuntime; 1266c0aa5ff6e6253db0f993053599e2a52b5b93b2dPeter Collingbourne delete CUDARuntime; 1270628b724ff68105dc88af00a39f859447f22981eTed Kremenek delete TheTargetCodeGenInfo; 128f16aa103d3afd42fbca2ab346f191bf745cec092John McCall delete &ABI; 1294376c85fb0ac9e7fd779d246efc77e1169179138Dan Gohman delete TBAA; 130815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenek delete DebugInfo; 131f85e193739c953358c865005855253af4f68a497John McCall delete ARCData; 132f85e193739c953358c865005855253af4f68a497John McCall delete RRData; 133815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenek} 134815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenek 1350d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnallvoid CodeGenModule::createObjCRuntime() { 1364e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!LangOpts.NeXTRuntime) 137e926523105dd2604ccd5c101605dea43c5269965Peter Collingbourne ObjCRuntime = CreateGNUObjCRuntime(*this); 1380d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall else 139e926523105dd2604ccd5c101605dea43c5269965Peter Collingbourne ObjCRuntime = CreateMacObjCRuntime(*this); 1400d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall} 1410d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall 1428c25fc584ce27d59df9923f153e8a132dde58d04Peter Collingbournevoid CodeGenModule::createOpenCLRuntime() { 1438c25fc584ce27d59df9923f153e8a132dde58d04Peter Collingbourne OpenCLRuntime = new CGOpenCLRuntime(*this); 1448c25fc584ce27d59df9923f153e8a132dde58d04Peter Collingbourne} 1458c25fc584ce27d59df9923f153e8a132dde58d04Peter Collingbourne 1466c0aa5ff6e6253db0f993053599e2a52b5b93b2dPeter Collingbournevoid CodeGenModule::createCUDARuntime() { 1476c0aa5ff6e6253db0f993053599e2a52b5b93b2dPeter Collingbourne CUDARuntime = CreateNVCUDARuntime(*this); 1486c0aa5ff6e6253db0f993053599e2a52b5b93b2dPeter Collingbourne} 1496c0aa5ff6e6253db0f993053599e2a52b5b93b2dPeter Collingbourne 150815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenekvoid CodeGenModule::Release() { 15182227ff4eb665bbf41720ebdc0dc9215a86ba838Chris Lattner EmitDeferred(); 1526c6bda3b0b1d8adaac2ba3f4da7056e9f1eef52eEli Friedman EmitCXXGlobalInitFunc(); 153efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar EmitCXXGlobalDtorFunc(); 154e926523105dd2604ccd5c101605dea43c5269965Peter Collingbourne if (ObjCRuntime) 155e926523105dd2604ccd5c101605dea43c5269965Peter Collingbourne if (llvm::Function *ObjCInitFunction = ObjCRuntime->ModuleInitFunction()) 156208ff5e8a073de2a5d15cbe03cab8a4c0d935e28Daniel Dunbar AddGlobalCtor(ObjCInitFunction); 1576bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar EmitCtorList(GlobalCtors, "llvm.global_ctors"); 1586bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar EmitCtorList(GlobalDtors, "llvm.global_dtors"); 15977f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge EmitGlobalAnnotations(); 1600269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar EmitLLVMUsed(); 161744016dde06fcffd50931e94a98c850f8b12cd87John McCall 162b25938303de0976b9f189363d43033e5788e3d36John McCall SimplifyPersonality(); 163b25938303de0976b9f189363d43033e5788e3d36John McCall 164744016dde06fcffd50931e94a98c850f8b12cd87John McCall if (getCodeGenOpts().EmitDeclMetadata) 165744016dde06fcffd50931e94a98c850f8b12cd87John McCall EmitDeclMetadata(); 1665ea4f44e34449a78d6b38aa47c14b527839d7aacNick Lewycky 1675ea4f44e34449a78d6b38aa47c14b527839d7aacNick Lewycky if (getCodeGenOpts().EmitGcovArcs || getCodeGenOpts().EmitGcovNotes) 1683dc05418538c719fea48b906bfa4febe5296e126Nick Lewycky EmitCoverageFile(); 169f391dbe39dca85f2a2c6ea558811dacc571c223eDevang Patel 170f391dbe39dca85f2a2c6ea558811dacc571c223eDevang Patel if (DebugInfo) 171f391dbe39dca85f2a2c6ea558811dacc571c223eDevang Patel DebugInfo->finalize(); 172f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar} 173f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar 174e80d56771736c85fd8365c394a6731923b17e91dDevang Patelvoid CodeGenModule::UpdateCompletedType(const TagDecl *TD) { 175e80d56771736c85fd8365c394a6731923b17e91dDevang Patel // Make sure that this type is translated. 176e80d56771736c85fd8365c394a6731923b17e91dDevang Patel Types.UpdateCompletedType(TD); 177e80d56771736c85fd8365c394a6731923b17e91dDevang Patel} 178e80d56771736c85fd8365c394a6731923b17e91dDevang Patel 1793d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohmanllvm::MDNode *CodeGenModule::getTBAAInfo(QualType QTy) { 1803d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman if (!TBAA) 1813d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman return 0; 1823d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman return TBAA->getTBAAInfo(QTy); 1833d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman} 1843d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman 1858cb4a070d491ddd671b049110cc8d0accb08b905Kostya Serebryanyllvm::MDNode *CodeGenModule::getTBAAInfoForVTablePtr() { 1868cb4a070d491ddd671b049110cc8d0accb08b905Kostya Serebryany if (!TBAA) 1878cb4a070d491ddd671b049110cc8d0accb08b905Kostya Serebryany return 0; 1888cb4a070d491ddd671b049110cc8d0accb08b905Kostya Serebryany return TBAA->getTBAAInfoForVTablePtr(); 1898cb4a070d491ddd671b049110cc8d0accb08b905Kostya Serebryany} 1908cb4a070d491ddd671b049110cc8d0accb08b905Kostya Serebryany 1913d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohmanvoid CodeGenModule::DecorateInstruction(llvm::Instruction *Inst, 1923d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman llvm::MDNode *TBAAInfo) { 1933d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman Inst->setMetadata(llvm::LLVMContext::MD_tbaa, TBAAInfo); 1943d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman} 1953d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman 1966374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCallbool CodeGenModule::isTargetDarwin() const { 197bcfd1f55bfbb3e5944cd5e03d07b343e280838c4Douglas Gregor return getContext().getTargetInfo().getTriple().isOSDarwin(); 1986374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall} 1996374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 2000f30a12ce7b3d4d86c9ca9072f587da77c8eef34Chandler Carruthvoid CodeGenModule::Error(SourceLocation loc, StringRef error) { 2010f30a12ce7b3d4d86c9ca9072f587da77c8eef34Chandler Carruth unsigned diagID = getDiags().getCustomDiagID(DiagnosticsEngine::Error, error); 20232096695c76033a6b0b1747c439f7378a11e8312John McCall getDiags().Report(Context.getFullLoc(loc), diagID); 20332096695c76033a6b0b1747c439f7378a11e8312John McCall} 20432096695c76033a6b0b1747c439f7378a11e8312John McCall 205488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar/// ErrorUnsupported - Print out an error that codegen doesn't support the 2062c8569d5f43f7de1fb993e84c95ea571dd9ac55eChris Lattner/// specified stmt yet. 20790df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbarvoid CodeGenModule::ErrorUnsupported(const Stmt *S, const char *Type, 20890df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar bool OmitOnError) { 20990df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar if (OmitOnError && getDiags().hasErrorOccurred()) 21090df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar return; 211d6471f7c1921c7802804ce3ff6fe9768310f72b9David Blaikie unsigned DiagID = getDiags().getCustomDiagID(DiagnosticsEngine::Error, 21256b8001b42bd603ef593e3cb278d8b9b9ba26ca9Daniel Dunbar "cannot compile this %0 yet"); 2132c8569d5f43f7de1fb993e84c95ea571dd9ac55eChris Lattner std::string Msg = Type; 2140a14eee528a901c16f0e288fbc10a3abc1660d87Chris Lattner getDiags().Report(Context.getFullLoc(S->getLocStart()), DiagID) 2150a14eee528a901c16f0e288fbc10a3abc1660d87Chris Lattner << Msg << S->getSourceRange(); 2162c8569d5f43f7de1fb993e84c95ea571dd9ac55eChris Lattner} 21758c3f9ec11cbe852a518bf2f83af46f938b7b852Chris Lattner 218488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar/// ErrorUnsupported - Print out an error that codegen doesn't support the 219c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner/// specified decl yet. 22090df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbarvoid CodeGenModule::ErrorUnsupported(const Decl *D, const char *Type, 22190df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar bool OmitOnError) { 22290df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar if (OmitOnError && getDiags().hasErrorOccurred()) 22390df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar return; 224d6471f7c1921c7802804ce3ff6fe9768310f72b9David Blaikie unsigned DiagID = getDiags().getCustomDiagID(DiagnosticsEngine::Error, 22556b8001b42bd603ef593e3cb278d8b9b9ba26ca9Daniel Dunbar "cannot compile this %0 yet"); 226c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner std::string Msg = Type; 2270a14eee528a901c16f0e288fbc10a3abc1660d87Chris Lattner getDiags().Report(Context.getFullLoc(D->getLocation()), DiagID) << Msg; 228c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner} 229c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner 230bc8d40d85f3fa1e34569834916f18fecaa635152John McCallllvm::ConstantInt *CodeGenModule::getSize(CharUnits size) { 231bc8d40d85f3fa1e34569834916f18fecaa635152John McCall return llvm::ConstantInt::get(SizeTy, size.getQuantity()); 232bc8d40d85f3fa1e34569834916f18fecaa635152John McCall} 233bc8d40d85f3fa1e34569834916f18fecaa635152John McCall 2341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpvoid CodeGenModule::setGlobalVisibility(llvm::GlobalValue *GV, 2350ffeaad72cb335b926b064379be4c9886bbff004Anders Carlsson const NamedDecl *D) const { 23604d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar // Internal definitions always have default visibility. 237df102fcb978588d5edbc661fb5da0b6922f9ab1cChris Lattner if (GV->hasLocalLinkage()) { 2387e714cd931fa3a90bfd728318a92485aa3e95748Daniel Dunbar GV->setVisibility(llvm::GlobalValue::DefaultVisibility); 2396ab187a49a42de6d351248d8a6e0206e39743a0cDaniel Dunbar return; 2407e714cd931fa3a90bfd728318a92485aa3e95748Daniel Dunbar } 2416ab187a49a42de6d351248d8a6e0206e39743a0cDaniel Dunbar 242af14603ca61757cf4361b583b45639a04c57e651John McCall // Set visibility for definitions. 243af14603ca61757cf4361b583b45639a04c57e651John McCall NamedDecl::LinkageInfo LV = D->getLinkageAndVisibility(); 244c7c9058f4977ef4584d68718e23f34504b150ef4Fariborz Jahanian if (LV.visibilityExplicit() || !GV->hasAvailableExternallyLinkage()) 245c7c9058f4977ef4584d68718e23f34504b150ef4Fariborz Jahanian GV->setVisibility(GetLLVMVisibility(LV.visibility())); 2467cd2e93125e2f3b6ca01b24ed0c3fd7e94683fd9Fariborz Jahanian} 2477cd2e93125e2f3b6ca01b24ed0c3fd7e94683fd9Fariborz Jahanian 248cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall/// Set the symbol visibility of type information (vtable and RTTI) 249cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall/// associated with the given type. 250cbfe50224b19119e759802bd0c1463269dffd09eJohn McCallvoid CodeGenModule::setTypeVisibility(llvm::GlobalValue *GV, 251cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall const CXXRecordDecl *RD, 252fa2e99f72f9bfe2270ea8caf76d0eef11c45259fAnders Carlsson TypeVisibilityKind TVK) const { 2530ffeaad72cb335b926b064379be4c9886bbff004Anders Carlsson setGlobalVisibility(GV, RD); 254cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall 255279b5eb6910d64a293e9c0e2887a05c65d8737d7John McCall if (!CodeGenOpts.HiddenWeakVTables) 256279b5eb6910d64a293e9c0e2887a05c65d8737d7John McCall return; 257279b5eb6910d64a293e9c0e2887a05c65d8737d7John McCall 2589a86a137b0872bad25161fb3408a71d919638757Anders Carlsson // We never want to drop the visibility for RTTI names. 2599a86a137b0872bad25161fb3408a71d919638757Anders Carlsson if (TVK == TVK_ForRTTIName) 2609a86a137b0872bad25161fb3408a71d919638757Anders Carlsson return; 2619a86a137b0872bad25161fb3408a71d919638757Anders Carlsson 262cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall // We want to drop the visibility to hidden for weak type symbols. 263cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall // This isn't possible if there might be unresolved references 264cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall // elsewhere that rely on this symbol being visible. 265cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall 2667a536907da776bdc47a704e7cafd641e8150e653John McCall // This should be kept roughly in sync with setThunkVisibility 2677a536907da776bdc47a704e7cafd641e8150e653John McCall // in CGVTables.cpp. 2687a536907da776bdc47a704e7cafd641e8150e653John McCall 269cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall // Preconditions. 270f502d93b0ea970bfbd897e657f8d940a20984de2Anders Carlsson if (GV->getLinkage() != llvm::GlobalVariable::LinkOnceODRLinkage || 271cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall GV->getVisibility() != llvm::GlobalVariable::DefaultVisibility) 272cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall return; 273cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall 274cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall // Don't override an explicit visibility attribute. 2754421d2b341d041df44013769f23c306308bbab83Douglas Gregor if (RD->getExplicitVisibility()) 276cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall return; 277cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall 278cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall switch (RD->getTemplateSpecializationKind()) { 279cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall // We have to disable the optimization if this is an EI definition 280cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall // because there might be EI declarations in other shared objects. 281cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall case TSK_ExplicitInstantiationDefinition: 282cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall case TSK_ExplicitInstantiationDeclaration: 283cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall return; 284cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall 2857a536907da776bdc47a704e7cafd641e8150e653John McCall // Every use of a non-template class's type information has to emit it. 286cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall case TSK_Undeclared: 287cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall break; 288cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall 2897a536907da776bdc47a704e7cafd641e8150e653John McCall // In theory, implicit instantiations can ignore the possibility of 2907a536907da776bdc47a704e7cafd641e8150e653John McCall // an explicit instantiation declaration because there necessarily 2917a536907da776bdc47a704e7cafd641e8150e653John McCall // must be an EI definition somewhere with default visibility. In 2927a536907da776bdc47a704e7cafd641e8150e653John McCall // practice, it's possible to have an explicit instantiation for 2937a536907da776bdc47a704e7cafd641e8150e653John McCall // an arbitrary template class, and linkers aren't necessarily able 2947a536907da776bdc47a704e7cafd641e8150e653John McCall // to deal with mixed-visibility symbols. 2957a536907da776bdc47a704e7cafd641e8150e653John McCall case TSK_ExplicitSpecialization: 296cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall case TSK_ImplicitInstantiation: 297279b5eb6910d64a293e9c0e2887a05c65d8737d7John McCall if (!CodeGenOpts.HiddenWeakTemplateVTables) 2987a536907da776bdc47a704e7cafd641e8150e653John McCall return; 299cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall break; 300cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall } 301cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall 302cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall // If there's a key function, there may be translation units 303cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall // that don't have the key function's definition. But ignore 304cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall // this if we're emitting RTTI under -fno-rtti. 3054e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!(TVK != TVK_ForRTTI) || LangOpts.RTTI) { 306cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall if (Context.getKeyFunction(RD)) 307cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall return; 308fa2e99f72f9bfe2270ea8caf76d0eef11c45259fAnders Carlsson } 309cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall 310cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall // Otherwise, drop the visibility to hidden. 311cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall GV->setVisibility(llvm::GlobalValue::HiddenVisibility); 312b1c65ff108de47a89585ad37874bd6cb232664cdRafael Espindola GV->setUnnamedAddr(true); 313cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall} 314cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall 3155f9e272e632e951b1efe824cd16acb4d96077930Chris LattnerStringRef CodeGenModule::getMangledName(GlobalDecl GD) { 316793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson const NamedDecl *ND = cast<NamedDecl>(GD.getDecl()); 317793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson 3185f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef &Str = MangledDeclNames[GD.getCanonicalDecl()]; 319793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson if (!Str.empty()) 320793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson return Str; 321793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson 3224c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall if (!getCXXABI().getMangleContext().shouldMangleDeclName(ND)) { 323793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson IdentifierInfo *II = ND->getIdentifier(); 324793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson assert(II && "Attempt to mangle unnamed decl."); 325793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson 326793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson Str = II->getName(); 327793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson return Str; 328793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson } 329793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson 330f7ccbad5d9949e7ddd1cbef43d482553b811e026Dylan Noblesmith SmallString<256> Buffer; 331c4850c2aa4c281a352e228aafc51fb1e30dcad02Rafael Espindola llvm::raw_svector_ostream Out(Buffer); 332793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson if (const CXXConstructorDecl *D = dyn_cast<CXXConstructorDecl>(ND)) 333c4850c2aa4c281a352e228aafc51fb1e30dcad02Rafael Espindola getCXXABI().getMangleContext().mangleCXXCtor(D, GD.getCtorType(), Out); 334793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson else if (const CXXDestructorDecl *D = dyn_cast<CXXDestructorDecl>(ND)) 335c4850c2aa4c281a352e228aafc51fb1e30dcad02Rafael Espindola getCXXABI().getMangleContext().mangleCXXDtor(D, GD.getDtorType(), Out); 336793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson else if (const BlockDecl *BD = dyn_cast<BlockDecl>(ND)) 337c4850c2aa4c281a352e228aafc51fb1e30dcad02Rafael Espindola getCXXABI().getMangleContext().mangleBlock(BD, Out); 338793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson else 339c4850c2aa4c281a352e228aafc51fb1e30dcad02Rafael Espindola getCXXABI().getMangleContext().mangleName(ND, Out); 340793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson 341793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson // Allocate space for the mangled name. 342c4850c2aa4c281a352e228aafc51fb1e30dcad02Rafael Espindola Out.flush(); 343793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson size_t Length = Buffer.size(); 344793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson char *Name = MangledNamesAllocator.Allocate<char>(Length); 345793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson std::copy(Buffer.begin(), Buffer.end(), Name); 346793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson 3475f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner Str = StringRef(Name, Length); 348793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson 349793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson return Str; 350793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson} 351793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson 35214110477887e3dc168ffc6c191e72d705051f99ePeter Collingbournevoid CodeGenModule::getBlockMangledName(GlobalDecl GD, MangleBuffer &Buffer, 35314110477887e3dc168ffc6c191e72d705051f99ePeter Collingbourne const BlockDecl *BD) { 35414110477887e3dc168ffc6c191e72d705051f99ePeter Collingbourne MangleContext &MangleCtx = getCXXABI().getMangleContext(); 35514110477887e3dc168ffc6c191e72d705051f99ePeter Collingbourne const Decl *D = GD.getDecl(); 356c4850c2aa4c281a352e228aafc51fb1e30dcad02Rafael Espindola llvm::raw_svector_ostream Out(Buffer.getBuffer()); 35714110477887e3dc168ffc6c191e72d705051f99ePeter Collingbourne if (D == 0) 358c4850c2aa4c281a352e228aafc51fb1e30dcad02Rafael Espindola MangleCtx.mangleGlobalBlock(BD, Out); 35914110477887e3dc168ffc6c191e72d705051f99ePeter Collingbourne else if (const CXXConstructorDecl *CD = dyn_cast<CXXConstructorDecl>(D)) 360c4850c2aa4c281a352e228aafc51fb1e30dcad02Rafael Espindola MangleCtx.mangleCtorBlock(CD, GD.getCtorType(), BD, Out); 36114110477887e3dc168ffc6c191e72d705051f99ePeter Collingbourne else if (const CXXDestructorDecl *DD = dyn_cast<CXXDestructorDecl>(D)) 362c4850c2aa4c281a352e228aafc51fb1e30dcad02Rafael Espindola MangleCtx.mangleDtorBlock(DD, GD.getDtorType(), BD, Out); 36314110477887e3dc168ffc6c191e72d705051f99ePeter Collingbourne else 364c4850c2aa4c281a352e228aafc51fb1e30dcad02Rafael Espindola MangleCtx.mangleBlock(cast<DeclContext>(D), BD, Out); 3659a8822bb154b792cdb18fe4cfb34480ca0ec7661Anders Carlsson} 3669a8822bb154b792cdb18fe4cfb34480ca0ec7661Anders Carlsson 3675f9e272e632e951b1efe824cd16acb4d96077930Chris Lattnerllvm::GlobalValue *CodeGenModule::GetGlobalValue(StringRef Name) { 368f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall return getModule().getNamedValue(Name); 3695f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor} 3705f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor 3716d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner/// AddGlobalCtor - Add a function to the list that will be called before 3726d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner/// main() runs. 3736bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbarvoid CodeGenModule::AddGlobalCtor(llvm::Function * Ctor, int Priority) { 37449988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // FIXME: Type coercion of void()* types. 3756bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar GlobalCtors.push_back(std::make_pair(Ctor, Priority)); 3766d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner} 3776d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner 3786bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar/// AddGlobalDtor - Add a function to the list that will be called 3796bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar/// when the module is unloaded. 3806bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbarvoid CodeGenModule::AddGlobalDtor(llvm::Function * Dtor, int Priority) { 38149988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // FIXME: Type coercion of void()* types. 3826bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar GlobalDtors.push_back(std::make_pair(Dtor, Priority)); 3836bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar} 3846bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar 3856bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbarvoid CodeGenModule::EmitCtorList(const CtorList &Fns, const char *GlobalName) { 3866bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar // Ctor function type is void()*. 3870774cb84719f2aea3016493a2bbd9a02aa3e0541John McCall llvm::FunctionType* CtorFTy = llvm::FunctionType::get(VoidTy, false); 38896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::Type *CtorPFTy = llvm::PointerType::getUnqual(CtorFTy); 3896bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar 3906bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar // Get the type of a ctor entry, { i32, void ()* }. 391c5cbb909e8a27deb8f1a2b6b7bf56a96051af81aChris Lattner llvm::StructType *CtorStructTy = 3928b418685e9e4f02f4eb2a76e1ec063e07552b68dChris Lattner llvm::StructType::get(Int32Ty, llvm::PointerType::getUnqual(CtorFTy), NULL); 3936bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar 3946bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar // Construct the constructor and destructor arrays. 3950b2397132efe74ee11c1b371dd9033820c54240fChris Lattner SmallVector<llvm::Constant*, 8> Ctors; 3966bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar for (CtorList::const_iterator I = Fns.begin(), E = Fns.end(); I != E; ++I) { 3970b2397132efe74ee11c1b371dd9033820c54240fChris Lattner llvm::Constant *S[] = { 3980b2397132efe74ee11c1b371dd9033820c54240fChris Lattner llvm::ConstantInt::get(Int32Ty, I->second, false), 3990b2397132efe74ee11c1b371dd9033820c54240fChris Lattner llvm::ConstantExpr::getBitCast(I->first, CtorPFTy) 4000b2397132efe74ee11c1b371dd9033820c54240fChris Lattner }; 40108e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Ctors.push_back(llvm::ConstantStruct::get(CtorStructTy, S)); 4026bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar } 4036bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar 4046bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar if (!Ctors.empty()) { 40596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *AT = llvm::ArrayType::get(CtorStructTy, Ctors.size()); 4061c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, AT, false, 407572cf09ae8a78af1c56d40b016ec4cf1837163acChris Lattner llvm::GlobalValue::AppendingLinkage, 4087db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::ConstantArray::get(AT, Ctors), 4091c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson GlobalName); 4106d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner } 4116d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner} 4126d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner 413d46f98573ba104eda102dd3224b2dca69f1c6336John McCallllvm::GlobalValue::LinkageTypes 414d46f98573ba104eda102dd3224b2dca69f1c6336John McCallCodeGenModule::getFunctionLinkage(const FunctionDecl *D) { 41590e99a84ddd020e8fda79643748243725a2ed071Argyrios Kyrtzidis GVALinkage Linkage = getContext().GetGVALinkageForFunction(D); 4167c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 417f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner if (Linkage == GVA_Internal) 418d46f98573ba104eda102dd3224b2dca69f1c6336John McCall return llvm::Function::InternalLinkage; 419f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner 420f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner if (D->hasAttr<DLLExportAttr>()) 421d46f98573ba104eda102dd3224b2dca69f1c6336John McCall return llvm::Function::DLLExportLinkage; 422f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner 423f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner if (D->hasAttr<WeakAttr>()) 424d46f98573ba104eda102dd3224b2dca69f1c6336John McCall return llvm::Function::WeakAnyLinkage; 425f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner 426f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner // In C99 mode, 'inline' functions are guaranteed to have a strong 427f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner // definition somewhere else, so we can use available_externally linkage. 428f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner if (Linkage == GVA_C99Inline) 429fd0f89d3d7e4220327abdec1cb115474d70219dcFariborz Jahanian return llvm::Function::AvailableExternallyLinkage; 4305584d91c938384b57563edbca5c2d4f1c66ff02aJohn McCall 4315584d91c938384b57563edbca5c2d4f1c66ff02aJohn McCall // Note that Apple's kernel linker doesn't support symbol 4325584d91c938384b57563edbca5c2d4f1c66ff02aJohn McCall // coalescing, so we need to avoid linkonce and weak linkages there. 4335584d91c938384b57563edbca5c2d4f1c66ff02aJohn McCall // Normally, this means we just map to internal, but for explicit 4345584d91c938384b57563edbca5c2d4f1c66ff02aJohn McCall // instantiations we'll map to external. 4355584d91c938384b57563edbca5c2d4f1c66ff02aJohn McCall 436f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner // In C++, the compiler has to emit a definition in every translation unit 437f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner // that references the function. We should use linkonce_odr because 438f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner // a) if all references in this translation unit are optimized away, we 439f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner // don't need to codegen it. b) if the function persists, it needs to be 440f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner // merged with other definitions. c) C++ has the ODR, so we know the 441f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner // definition is dependable. 442f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner if (Linkage == GVA_CXXInline || Linkage == GVA_TemplateInstantiation) 4434e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return !Context.getLangOpts().AppleKext 444142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian ? llvm::Function::LinkOnceODRLinkage 445142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian : llvm::Function::InternalLinkage; 446f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner 447f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner // An explicit instantiation of a template has weak linkage, since 448f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner // explicit instantiations can occur in multiple translation units 449f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner // and must all be equivalent. However, we are not allowed to 450f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner // throw away these explicit instantiations. 451f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner if (Linkage == GVA_ExplicitTemplateInstantiation) 4524e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return !Context.getLangOpts().AppleKext 453142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian ? llvm::Function::WeakODRLinkage 4545584d91c938384b57563edbca5c2d4f1c66ff02aJohn McCall : llvm::Function::ExternalLinkage; 455f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner 456f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner // Otherwise, we have strong external linkage. 457f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner assert(Linkage == GVA_StrongExternal); 458f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner return llvm::Function::ExternalLinkage; 459d46f98573ba104eda102dd3224b2dca69f1c6336John McCall} 460d4cbda6292b321c2e7dce7f039d92918fee99b3aNuno Lopes 461d46f98573ba104eda102dd3224b2dca69f1c6336John McCall 462d46f98573ba104eda102dd3224b2dca69f1c6336John McCall/// SetFunctionDefinitionAttributes - Set attributes for a global. 463d46f98573ba104eda102dd3224b2dca69f1c6336John McCall/// 464d46f98573ba104eda102dd3224b2dca69f1c6336John McCall/// FIXME: This is currently only done for aliases and functions, but not for 465d46f98573ba104eda102dd3224b2dca69f1c6336John McCall/// variables (these details are set in EmitGlobalVarDefinition for variables). 466d46f98573ba104eda102dd3224b2dca69f1c6336John McCallvoid CodeGenModule::SetFunctionDefinitionAttributes(const FunctionDecl *D, 467d46f98573ba104eda102dd3224b2dca69f1c6336John McCall llvm::GlobalValue *GV) { 4687c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar SetCommonAttributes(D, GV); 469d4cbda6292b321c2e7dce7f039d92918fee99b3aNuno Lopes} 470d4cbda6292b321c2e7dce7f039d92918fee99b3aNuno Lopes 4717dbd8197040313d796282d4af06eccdf8a17319cDaniel Dunbarvoid CodeGenModule::SetLLVMFunctionAttributes(const Decl *D, 4721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const CGFunctionInfo &Info, 4737dbd8197040313d796282d4af06eccdf8a17319cDaniel Dunbar llvm::Function *F) { 474ca6408c3176783f0b29da4679a08512aa05f0c73Daniel Dunbar unsigned CallingConv; 475761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patel AttributeListType AttributeList; 476ca6408c3176783f0b29da4679a08512aa05f0c73Daniel Dunbar ConstructAttributeList(Info, D, AttributeList, CallingConv); 477761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patel F->setAttributes(llvm::AttrListPtr::get(AttributeList.begin(), 478ca6408c3176783f0b29da4679a08512aa05f0c73Daniel Dunbar AttributeList.size())); 479ca6408c3176783f0b29da4679a08512aa05f0c73Daniel Dunbar F->setCallingConv(static_cast<llvm::CallingConv::ID>(CallingConv)); 480f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar} 481f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar 482d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall/// Determines whether the language options require us to model 483d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall/// unwind exceptions. We treat -fexceptions as mandating this 484d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall/// except under the fragile ObjC ABI with only ObjC exceptions 485d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall/// enabled. This means, for example, that C with -fexceptions 486d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall/// enables this. 4874e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikiestatic bool hasUnwindExceptions(const LangOptions &LangOpts) { 488d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall // If exceptions are completely disabled, obviously this is false. 4894e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!LangOpts.Exceptions) return false; 490d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall 491d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall // If C++ exceptions are enabled, this is true. 4924e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (LangOpts.CXXExceptions) return true; 493d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall 494d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall // If ObjC exceptions are enabled, this depends on the ABI. 4954e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (LangOpts.ObjCExceptions) { 4964e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!LangOpts.ObjCNonFragileABI) return false; 497d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall } 498d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall 499d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall return true; 500d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall} 501d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall 5027c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbarvoid CodeGenModule::SetLLVMFunctionAttributesForDefinition(const Decl *D, 5037c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar llvm::Function *F) { 504abca5a1b3e74e644e297c7590b46ab73a6bb476aRafael Espindola if (CodeGenOpts.UnwindTables) 505abca5a1b3e74e644e297c7590b46ab73a6bb476aRafael Espindola F->setHasUWTable(); 506abca5a1b3e74e644e297c7590b46ab73a6bb476aRafael Espindola 5074e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!hasUnwindExceptions(LangOpts)) 5081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump F->addFnAttr(llvm::Attribute::NoUnwind); 509af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar 5102873aee1774a2ae731d6cc5c5ee05ba82780dc98Eli Friedman if (D->hasAttr<NakedAttr>()) { 5112873aee1774a2ae731d6cc5c5ee05ba82780dc98Eli Friedman // Naked implies noinline: we should not be inlining such functions. 512dd0cb22bd62e1e835327f478a2dbf0b8fa439713Daniel Dunbar F->addFnAttr(llvm::Attribute::Naked); 5132873aee1774a2ae731d6cc5c5ee05ba82780dc98Eli Friedman F->addFnAttr(llvm::Attribute::NoInline); 5142873aee1774a2ae731d6cc5c5ee05ba82780dc98Eli Friedman } 515dd0cb22bd62e1e835327f478a2dbf0b8fa439713Daniel Dunbar 5161feade8e520be483293dbf55eb57a51720899589Mike Stump if (D->hasAttr<NoInlineAttr>()) 51781ebbde0fb30a40df0f5e913d8a1f71c383d271aAnders Carlsson F->addFnAttr(llvm::Attribute::NoInline); 518f55314dce992fd60816ba337ad151a2fb7c42239Mike Stump 5192873aee1774a2ae731d6cc5c5ee05ba82780dc98Eli Friedman // (noinline wins over always_inline, and we can't specify both in IR) 5202873aee1774a2ae731d6cc5c5ee05ba82780dc98Eli Friedman if (D->hasAttr<AlwaysInlineAttr>() && 5212873aee1774a2ae731d6cc5c5ee05ba82780dc98Eli Friedman !F->hasFnAttr(llvm::Attribute::NoInline)) 5222873aee1774a2ae731d6cc5c5ee05ba82780dc98Eli Friedman F->addFnAttr(llvm::Attribute::AlwaysInline); 5232873aee1774a2ae731d6cc5c5ee05ba82780dc98Eli Friedman 524c5f657fe308f22243f674fc1dfbe24915944d8bfRafael Espindola if (isa<CXXConstructorDecl>(D) || isa<CXXDestructorDecl>(D)) 525c5f657fe308f22243f674fc1dfbe24915944d8bfRafael Espindola F->setUnnamedAddr(true); 526c5f657fe308f22243f674fc1dfbe24915944d8bfRafael Espindola 5274e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (LangOpts.getStackProtector() == LangOptions::SSPOn) 528fd015353a3c4f528216276f25df5b4d464d7a0cdAnders Carlsson F->addFnAttr(llvm::Attribute::StackProtect); 5294e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie else if (LangOpts.getStackProtector() == LangOptions::SSPReq) 530fd015353a3c4f528216276f25df5b4d464d7a0cdAnders Carlsson F->addFnAttr(llvm::Attribute::StackProtectReq); 531fd015353a3c4f528216276f25df5b4d464d7a0cdAnders Carlsson 5324e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (LangOpts.AddressSanitizer) { 53389651eaf4170168cac2f34f2738e3d58fc38bbf1Alexander Potapenko // When AddressSanitizer is enabled, set AddressSafety attribute 53489651eaf4170168cac2f34f2738e3d58fc38bbf1Alexander Potapenko // unless __attribute__((no_address_safety_analysis)) is used. 53589651eaf4170168cac2f34f2738e3d58fc38bbf1Alexander Potapenko if (!D->hasAttr<NoAddressSafetyAnalysisAttr>()) 53689651eaf4170168cac2f34f2738e3d58fc38bbf1Alexander Potapenko F->addFnAttr(llvm::Attribute::AddressSafety); 53789651eaf4170168cac2f34f2738e3d58fc38bbf1Alexander Potapenko } 53889651eaf4170168cac2f34f2738e3d58fc38bbf1Alexander Potapenko 539cf807c4dfdb23e8fa3f400e0b24ef5b79db7a530Sean Hunt unsigned alignment = D->getMaxAlignment() / Context.getCharWidth(); 540cf807c4dfdb23e8fa3f400e0b24ef5b79db7a530Sean Hunt if (alignment) 541cf807c4dfdb23e8fa3f400e0b24ef5b79db7a530Sean Hunt F->setAlignment(alignment); 542cf807c4dfdb23e8fa3f400e0b24ef5b79db7a530Sean Hunt 543fb51ddfafcd5f8536d0312b3daa3c0b74b90ab5bMike Stump // C++ ABI requires 2-byte alignment for member functions. 544bd6dbd19781cefd5b5ff9750c8bf86e6c341a68cMike Stump if (F->getAlignment() < 2 && isa<CXXMethodDecl>(D)) 545bd6dbd19781cefd5b5ff9750c8bf86e6c341a68cMike Stump F->setAlignment(2); 546f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar} 547f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar 5481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpvoid CodeGenModule::SetCommonAttributes(const Decl *D, 5497c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar llvm::GlobalValue *GV) { 550934176f27552141b5ad113cb3603ffb14906c570Anders Carlsson if (const NamedDecl *ND = dyn_cast<NamedDecl>(D)) 551934176f27552141b5ad113cb3603ffb14906c570Anders Carlsson setGlobalVisibility(GV, ND); 5521fb0caaa7bef765b85972274e3b434af2572c141John McCall else 5531fb0caaa7bef765b85972274e3b434af2572c141John McCall GV->setVisibility(llvm::GlobalValue::DefaultVisibility); 5547c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 55540b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (D->hasAttr<UsedAttr>()) 5567c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar AddUsedGlobal(GV); 5577c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 55840b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (const SectionAttr *SA = D->getAttr<SectionAttr>()) 5597c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar GV->setSection(SA->getName()); 56082d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 56182d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov getTargetCodeGenInfo().SetTargetAttributes(D, GV, *this); 5627c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar} 5637c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 5640e4f40e1bbc4dce16bbb9870300a435419f1b3d5Daniel Dunbarvoid CodeGenModule::SetInternalFunctionAttributes(const Decl *D, 5650e4f40e1bbc4dce16bbb9870300a435419f1b3d5Daniel Dunbar llvm::Function *F, 5660e4f40e1bbc4dce16bbb9870300a435419f1b3d5Daniel Dunbar const CGFunctionInfo &FI) { 5670e4f40e1bbc4dce16bbb9870300a435419f1b3d5Daniel Dunbar SetLLVMFunctionAttributes(D, FI, F); 5680e4f40e1bbc4dce16bbb9870300a435419f1b3d5Daniel Dunbar SetLLVMFunctionAttributesForDefinition(D, F); 5697c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 5707c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar F->setLinkage(llvm::Function::InternalLinkage); 5717c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 5720e4f40e1bbc4dce16bbb9870300a435419f1b3d5Daniel Dunbar SetCommonAttributes(D, F); 573f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar} 574f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar 575b2bcf1c176b200b36f371e189ce22f93c86cdf45Anders Carlssonvoid CodeGenModule::SetFunctionAttributes(GlobalDecl GD, 576c6c14d1cd68afcd90d097715296377f15be45210Eli Friedman llvm::Function *F, 577c6c14d1cd68afcd90d097715296377f15be45210Eli Friedman bool IsIncompleteFunction) { 5780ac2cf4d28e1ed92508b27a3d9e28fc8db2a390bPeter Collingbourne if (unsigned IID = F->getIntrinsicID()) { 5790ac2cf4d28e1ed92508b27a3d9e28fc8db2a390bPeter Collingbourne // If this is an intrinsic function, set the function's attributes 5800ac2cf4d28e1ed92508b27a3d9e28fc8db2a390bPeter Collingbourne // to the intrinsic's attributes. 5810ac2cf4d28e1ed92508b27a3d9e28fc8db2a390bPeter Collingbourne F->setAttributes(llvm::Intrinsic::getAttributes((llvm::Intrinsic::ID)IID)); 5820ac2cf4d28e1ed92508b27a3d9e28fc8db2a390bPeter Collingbourne return; 5830ac2cf4d28e1ed92508b27a3d9e28fc8db2a390bPeter Collingbourne } 5840ac2cf4d28e1ed92508b27a3d9e28fc8db2a390bPeter Collingbourne 585b2bcf1c176b200b36f371e189ce22f93c86cdf45Anders Carlsson const FunctionDecl *FD = cast<FunctionDecl>(GD.getDecl()); 586b2bcf1c176b200b36f371e189ce22f93c86cdf45Anders Carlsson 587c6c14d1cd68afcd90d097715296377f15be45210Eli Friedman if (!IsIncompleteFunction) 588de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall SetLLVMFunctionAttributes(FD, getTypes().arrangeGlobalDeclaration(GD), F); 5891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5907c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // Only a few attributes are set on declarations; these may later be 5917c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // overridden by a definition. 5921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 59340b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (FD->hasAttr<DLLImportAttr>()) { 5947c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar F->setLinkage(llvm::Function::DLLImportLinkage); 5951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } else if (FD->hasAttr<WeakAttr>() || 5960a0d2b179085a52c10402feebeb6db8b4d96a140Douglas Gregor FD->isWeakImported()) { 5977c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // "extern_weak" is overloaded in LLVM; we probably should have 5981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // separate linkage types for this. 5997c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar F->setLinkage(llvm::Function::ExternalWeakLinkage); 6007c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar } else { 6011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump F->setLinkage(llvm::Function::ExternalLinkage); 602af14603ca61757cf4361b583b45639a04c57e651John McCall 603af14603ca61757cf4361b583b45639a04c57e651John McCall NamedDecl::LinkageInfo LV = FD->getLinkageAndVisibility(); 604af14603ca61757cf4361b583b45639a04c57e651John McCall if (LV.linkage() == ExternalLinkage && LV.visibilityExplicit()) { 605af14603ca61757cf4361b583b45639a04c57e651John McCall F->setVisibility(GetLLVMVisibility(LV.visibility())); 606af14603ca61757cf4361b583b45639a04c57e651John McCall } 6077c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar } 6087c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 60940b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (const SectionAttr *SA = FD->getAttr<SectionAttr>()) 6107c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar F->setSection(SA->getName()); 611219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar} 612219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 6130269871c9cba493f76237175ab60313406f3bafaDaniel Dunbarvoid CodeGenModule::AddUsedGlobal(llvm::GlobalValue *GV) { 6141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert(!GV->isDeclaration() && 6150269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar "Only globals with definition can force usage."); 61635f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner LLVMUsed.push_back(GV); 6170269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar} 6180269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar 6190269871c9cba493f76237175ab60313406f3bafaDaniel Dunbarvoid CodeGenModule::EmitLLVMUsed() { 6200269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar // Don't create llvm.used if there is no need. 621ad64e024bd18cf25dcfa44e049004371838decd8Chris Lattner if (LLVMUsed.empty()) 6220269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar return; 6230269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar 62435f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner // Convert LLVMUsed to what ConstantArray needs. 6250b2397132efe74ee11c1b371dd9033820c54240fChris Lattner SmallVector<llvm::Constant*, 8> UsedArray; 62635f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner UsedArray.resize(LLVMUsed.size()); 62735f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner for (unsigned i = 0, e = LLVMUsed.size(); i != e; ++i) { 6281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump UsedArray[i] = 6291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::ConstantExpr::getBitCast(cast<llvm::Constant>(&*LLVMUsed[i]), 6300b2397132efe74ee11c1b371dd9033820c54240fChris Lattner Int8PtrTy); 63135f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner } 6321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 633c38e9affd4519ea199af22419c8c794973cc4b23Fariborz Jahanian if (UsedArray.empty()) 634c38e9affd4519ea199af22419c8c794973cc4b23Fariborz Jahanian return; 6350b2397132efe74ee11c1b371dd9033820c54240fChris Lattner llvm::ArrayType *ATy = llvm::ArrayType::get(Int8PtrTy, UsedArray.size()); 6361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalVariable *GV = 6381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump new llvm::GlobalVariable(getModule(), ATy, false, 6390269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar llvm::GlobalValue::AppendingLinkage, 6407db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::ConstantArray::get(ATy, UsedArray), 6411c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson "llvm.used"); 6420269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar 6430269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar GV->setSection("llvm.metadata"); 6440269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar} 6450269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar 6460269871c9cba493f76237175ab60313406f3bafaDaniel Dunbarvoid CodeGenModule::EmitDeferred() { 64767b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Emit code for any potentially referenced deferred decls. Since a 64867b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // previously unused static decl may become used during the generation of code 649dce67a70a86db8758c926a76fdd980f5369d5746Nick Lewycky // for a static function, iterate until no changes are made. 650bbf58bb1b8dd8c5e0f07547a6c20ffd55385fcf6Rafael Espindola 651046c294a43024874ff35656c6e785b64e72f1f36Anders Carlsson while (!DeferredDeclsToEmit.empty() || !DeferredVTables.empty()) { 652046c294a43024874ff35656c6e785b64e72f1f36Anders Carlsson if (!DeferredVTables.empty()) { 653046c294a43024874ff35656c6e785b64e72f1f36Anders Carlsson const CXXRecordDecl *RD = DeferredVTables.back(); 654046c294a43024874ff35656c6e785b64e72f1f36Anders Carlsson DeferredVTables.pop_back(); 655046c294a43024874ff35656c6e785b64e72f1f36Anders Carlsson getVTables().GenerateClassData(getVTableLinkage(RD), RD); 656bbf58bb1b8dd8c5e0f07547a6c20ffd55385fcf6Rafael Espindola continue; 657bbf58bb1b8dd8c5e0f07547a6c20ffd55385fcf6Rafael Espindola } 658bbf58bb1b8dd8c5e0f07547a6c20ffd55385fcf6Rafael Espindola 6592a131fbca2a51085dc083b8c56a2d4ced3cf1413Anders Carlsson GlobalDecl D = DeferredDeclsToEmit.back(); 66067b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDeclsToEmit.pop_back(); 66167b00520c8f5b48fad722b790d87fea6be764efeChris Lattner 662c76702cc80c1ef8a94d82b62ddcb4ed4f67d5b8cJohn McCall // Check to see if we've already emitted this. This is necessary 663c76702cc80c1ef8a94d82b62ddcb4ed4f67d5b8cJohn McCall // for a couple of reasons: first, decls can end up in the 664c76702cc80c1ef8a94d82b62ddcb4ed4f67d5b8cJohn McCall // deferred-decls queue multiple times, and second, decls can end 665c76702cc80c1ef8a94d82b62ddcb4ed4f67d5b8cJohn McCall // up with definitions in unusual ways (e.g. by an extern inline 666c76702cc80c1ef8a94d82b62ddcb4ed4f67d5b8cJohn McCall // function acquiring a strong function redefinition). Just 667c76702cc80c1ef8a94d82b62ddcb4ed4f67d5b8cJohn McCall // ignore these cases. 668c76702cc80c1ef8a94d82b62ddcb4ed4f67d5b8cJohn McCall // 669c76702cc80c1ef8a94d82b62ddcb4ed4f67d5b8cJohn McCall // TODO: That said, looking this up multiple times is very wasteful. 6705f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef Name = getMangledName(D); 671f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall llvm::GlobalValue *CGRef = GetGlobalValue(Name); 67267b00520c8f5b48fad722b790d87fea6be764efeChris Lattner assert(CGRef && "Deferred decl wasn't referenced?"); 6731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 67467b00520c8f5b48fad722b790d87fea6be764efeChris Lattner if (!CGRef->isDeclaration()) 67567b00520c8f5b48fad722b790d87fea6be764efeChris Lattner continue; 6761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 677c76702cc80c1ef8a94d82b62ddcb4ed4f67d5b8cJohn McCall // GlobalAlias::isDeclaration() defers to the aliasee, but for our 678c76702cc80c1ef8a94d82b62ddcb4ed4f67d5b8cJohn McCall // purposes an alias counts as a definition. 679c76702cc80c1ef8a94d82b62ddcb4ed4f67d5b8cJohn McCall if (isa<llvm::GlobalAlias>(CGRef)) 680c76702cc80c1ef8a94d82b62ddcb4ed4f67d5b8cJohn McCall continue; 681c76702cc80c1ef8a94d82b62ddcb4ed4f67d5b8cJohn McCall 68267b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Otherwise, emit the definition and move on to the next one. 68367b00520c8f5b48fad722b790d87fea6be764efeChris Lattner EmitGlobalDefinition(D); 68467b00520c8f5b48fad722b790d87fea6be764efeChris Lattner } 6855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 6865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 68777f68bb90af93b95045fb994e7cd68137adcc132Julien Lerougevoid CodeGenModule::EmitGlobalAnnotations() { 68877f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge if (Annotations.empty()) 68977f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge return; 69077f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge 69177f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge // Create a new global variable for the ConstantStruct in the Module. 69277f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge llvm::Constant *Array = llvm::ConstantArray::get(llvm::ArrayType::get( 69377f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge Annotations[0]->getType(), Annotations.size()), Annotations); 69477f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge llvm::GlobalValue *gv = new llvm::GlobalVariable(getModule(), 69577f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge Array->getType(), false, llvm::GlobalValue::AppendingLinkage, Array, 69677f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge "llvm.global.annotations"); 69777f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge gv->setSection(AnnotationSection); 69877f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge} 69977f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge 70077f68bb90af93b95045fb994e7cd68137adcc132Julien Lerougellvm::Constant *CodeGenModule::EmitAnnotationString(llvm::StringRef Str) { 70177f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge llvm::StringMap<llvm::Constant*>::iterator i = AnnotationStrings.find(Str); 70277f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge if (i != AnnotationStrings.end()) 70377f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge return i->second; 70477f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge 70577f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge // Not found yet, create a new global. 70694010695f7fce626e41ef045b60def9c912e9ce8Chris Lattner llvm::Constant *s = llvm::ConstantDataArray::getString(getLLVMContext(), Str); 70777f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge llvm::GlobalValue *gv = new llvm::GlobalVariable(getModule(), s->getType(), 70877f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge true, llvm::GlobalValue::PrivateLinkage, s, ".str"); 70977f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge gv->setSection(AnnotationSection); 71077f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge gv->setUnnamedAddr(true); 71177f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge AnnotationStrings[Str] = gv; 71277f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge return gv; 71377f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge} 71477f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge 71577f68bb90af93b95045fb994e7cd68137adcc132Julien Lerougellvm::Constant *CodeGenModule::EmitAnnotationUnit(SourceLocation Loc) { 71677f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge SourceManager &SM = getContext().getSourceManager(); 71777f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge PresumedLoc PLoc = SM.getPresumedLoc(Loc); 71877f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge if (PLoc.isValid()) 71977f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge return EmitAnnotationString(PLoc.getFilename()); 72077f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge return EmitAnnotationString(SM.getBufferName(Loc)); 72177f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge} 72277f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge 72377f68bb90af93b95045fb994e7cd68137adcc132Julien Lerougellvm::Constant *CodeGenModule::EmitAnnotationLineNo(SourceLocation L) { 72477f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge SourceManager &SM = getContext().getSourceManager(); 72577f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge PresumedLoc PLoc = SM.getPresumedLoc(L); 72677f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge unsigned LineNo = PLoc.isValid() ? PLoc.getLine() : 72777f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge SM.getExpansionLineNumber(L); 72877f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge return llvm::ConstantInt::get(Int32Ty, LineNo); 72977f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge} 73077f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge 7311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpllvm::Constant *CodeGenModule::EmitAnnotateAttr(llvm::GlobalValue *GV, 7328bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman const AnnotateAttr *AA, 73377f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge SourceLocation L) { 73477f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge // Get the globals for file name, annotation, and the line number. 73577f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge llvm::Constant *AnnoGV = EmitAnnotationString(AA->getAnnotation()), 73677f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge *UnitGV = EmitAnnotationUnit(L), 73777f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge *LineNoCst = EmitAnnotationLineNo(L); 7388bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman 73957d5cee133495bc21d1abdbce45ab05a79274a23Daniel Dunbar // Create the ConstantStruct for the global annotation. 7408bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::Constant *Fields[4] = { 74177f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge llvm::ConstantExpr::getBitCast(GV, Int8PtrTy), 74277f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge llvm::ConstantExpr::getBitCast(AnnoGV, Int8PtrTy), 74377f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge llvm::ConstantExpr::getBitCast(UnitGV, Int8PtrTy), 74477f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge LineNoCst 7458bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman }; 746c5cbb909e8a27deb8f1a2b6b7bf56a96051af81aChris Lattner return llvm::ConstantStruct::getAnon(Fields); 7478bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman} 7488bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman 74977f68bb90af93b95045fb994e7cd68137adcc132Julien Lerougevoid CodeGenModule::AddGlobalAnnotations(const ValueDecl *D, 75077f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge llvm::GlobalValue *GV) { 75177f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge assert(D->hasAttr<AnnotateAttr>() && "no annotate attribute"); 75277f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge // Get the struct elements for these annotations. 75377f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge for (specific_attr_iterator<AnnotateAttr> 75477f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge ai = D->specific_attr_begin<AnnotateAttr>(), 75577f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge ae = D->specific_attr_end<AnnotateAttr>(); ai != ae; ++ai) 75677f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge Annotations.push_back(EmitAnnotateAttr(GV, *ai, D->getLocation())); 75777f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge} 75877f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge 759a6d6af308bfc9b72467b432a045a9fc6673e3821Argyrios Kyrtzidisbool CodeGenModule::MayDeferGeneration(const ValueDecl *Global) { 76090e99a84ddd020e8fda79643748243725a2ed071Argyrios Kyrtzidis // Never defer when EmitAllDecls is specified. 7614e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (LangOpts.EmitAllDecls) 762a6d6af308bfc9b72467b432a045a9fc6673e3821Argyrios Kyrtzidis return false; 7630b6bc8bd7a1d2a7d7478d13d78cff94cacad61fcDouglas Gregor 7644ac7c0bb39696e92fd220118fedc484c09a69870Argyrios Kyrtzidis return !getContext().DeclMustBeEmitted(Global); 76573241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar} 76673241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar 7676a836706c40a31c716952b74785102c90fd6afa7Rafael Espindolallvm::Constant *CodeGenModule::GetWeakRefReference(const ValueDecl *VD) { 7686a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola const AliasAttr *AA = VD->getAttr<AliasAttr>(); 7696a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola assert(AA && "No alias?"); 7706a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola 7712acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *DeclTy = getTypes().ConvertTypeForMem(VD->getType()); 7726a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola 7736a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola // See if there is already something with the target's name in the module. 774f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall llvm::GlobalValue *Entry = GetGlobalValue(AA->getAliasee()); 7756a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola 7766a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola llvm::Constant *Aliasee; 7776a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola if (isa<llvm::FunctionType>(DeclTy)) 7781faa89f9c619e4b2411fab4af7e22ee7a2bd9009Anders Carlsson Aliasee = GetOrCreateLLVMFunction(AA->getAliasee(), DeclTy, GlobalDecl(), 7791faa89f9c619e4b2411fab4af7e22ee7a2bd9009Anders Carlsson /*ForVTable=*/false); 7806a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola else 781f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall Aliasee = GetOrCreateLLVMGlobal(AA->getAliasee(), 7826a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola llvm::PointerType::getUnqual(DeclTy), 0); 7836a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola if (!Entry) { 7846a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola llvm::GlobalValue* F = cast<llvm::GlobalValue>(Aliasee); 7856a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola F->setLinkage(llvm::Function::ExternalWeakLinkage); 7866a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola WeakRefReferences.insert(F); 7876a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola } 7886a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola 7896a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola return Aliasee; 7906a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola} 7916a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola 792b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattnervoid CodeGenModule::EmitGlobal(GlobalDecl GD) { 7934a6835e650ff24e19ce08a3bd347c0ad186777fdAnders Carlsson const ValueDecl *Global = cast<ValueDecl>(GD.getDecl()); 7941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7956a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola // Weak references don't produce any output by themselves. 7966a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola if (Global->hasAttr<WeakRefAttr>()) 7976a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola return; 7986a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola 799bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // If this is an alias definition (which otherwise looks like a declaration) 800bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // emit it now. 80140b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (Global->hasAttr<AliasAttr>()) 802f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall return EmitAliasDefinition(GD); 803219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 804d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne // If this is CUDA, be selective about which declarations we emit. 8054e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (LangOpts.CUDA) { 806d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne if (CodeGenOpts.CUDAIsDevice) { 807d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne if (!Global->hasAttr<CUDADeviceAttr>() && 808d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne !Global->hasAttr<CUDAGlobalAttr>() && 809d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne !Global->hasAttr<CUDAConstantAttr>() && 810d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne !Global->hasAttr<CUDASharedAttr>()) 811d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne return; 812d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne } else { 813d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne if (!Global->hasAttr<CUDAHostAttr>() && ( 814d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne Global->hasAttr<CUDADeviceAttr>() || 815d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne Global->hasAttr<CUDAConstantAttr>() || 816d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne Global->hasAttr<CUDASharedAttr>())) 817d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne return; 818d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne } 819d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne } 820d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne 82167b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Ignore declarations, they will be emitted on their first use. 8225e1e1f95c98b1add70c238093bbd5dc8d4f9c4e9Daniel Dunbar if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(Global)) { 82373241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar // Forward declarations are emitted lazily on first use. 824dce67a70a86db8758c926a76fdd980f5369d5746Nick Lewycky if (!FD->doesThisDeclarationHaveABody()) { 825dce67a70a86db8758c926a76fdd980f5369d5746Nick Lewycky if (!FD->doesDeclarationForceExternallyVisibleDefinition()) 826dce67a70a86db8758c926a76fdd980f5369d5746Nick Lewycky return; 827dce67a70a86db8758c926a76fdd980f5369d5746Nick Lewycky 828dce67a70a86db8758c926a76fdd980f5369d5746Nick Lewycky const FunctionDecl *InlineDefinition = 0; 829dce67a70a86db8758c926a76fdd980f5369d5746Nick Lewycky FD->getBody(InlineDefinition); 830dce67a70a86db8758c926a76fdd980f5369d5746Nick Lewycky 8315f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef MangledName = getMangledName(GD); 8327e42392eb2ea29ddeb6d125417fb4c17d847b5e0Benjamin Kramer DeferredDecls.erase(MangledName); 833dce67a70a86db8758c926a76fdd980f5369d5746Nick Lewycky EmitGlobalDefinition(InlineDefinition); 83473241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar return; 835dce67a70a86db8758c926a76fdd980f5369d5746Nick Lewycky } 8360269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar } else { 8370269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar const VarDecl *VD = cast<VarDecl>(Global); 838bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar assert(VD->isFileVarDecl() && "Cannot emit local var decl as global."); 839bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 840a9a55c063e9e59c6ab0a6d7a21302660f7bde9f9Douglas Gregor if (VD->isThisDeclarationADefinition() != VarDecl::Definition) 84173241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar return; 8424c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman } 8434c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman 84467b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Defer code generation when possible if this is a static definition, inline 84567b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // function etc. These we only want to emit if they are used. 8464357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner if (!MayDeferGeneration(Global)) { 8474357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner // Emit the definition if it can't be deferred. 8484357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner EmitGlobalDefinition(GD); 849bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar return; 850bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } 851bf40cb518312dde1c07e44fcae59bc4eec65589cJohn McCall 852bf40cb518312dde1c07e44fcae59bc4eec65589cJohn McCall // If we're deferring emission of a C++ variable with an 853bf40cb518312dde1c07e44fcae59bc4eec65589cJohn McCall // initializer, remember the order in which it appeared in the file. 8544e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().CPlusPlus && isa<VarDecl>(Global) && 855bf40cb518312dde1c07e44fcae59bc4eec65589cJohn McCall cast<VarDecl>(Global)->hasInit()) { 856bf40cb518312dde1c07e44fcae59bc4eec65589cJohn McCall DelayedCXXInitPosition[Global] = CXXGlobalInits.size(); 857bf40cb518312dde1c07e44fcae59bc4eec65589cJohn McCall CXXGlobalInits.push_back(0); 858bf40cb518312dde1c07e44fcae59bc4eec65589cJohn McCall } 8594357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner 8604357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner // If the value has already been used, add it directly to the 8614357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner // DeferredDeclsToEmit list. 8625f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef MangledName = getMangledName(GD); 8634357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner if (GetGlobalValue(MangledName)) 8644357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner DeferredDeclsToEmit.push_back(GD); 8654357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner else { 8664357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner // Otherwise, remember that we saw a deferred decl with this name. The 8674357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner // first use of the mangled name will cause it to move into 8684357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner // DeferredDeclsToEmit. 8694357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner DeferredDecls[MangledName] = GD; 8704357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner } 8714c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman} 8724c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman 873a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindolanamespace { 874a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola struct FunctionIsDirectlyRecursive : 875a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola public RecursiveASTVisitor<FunctionIsDirectlyRecursive> { 876a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola const StringRef Name; 877bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola const Builtin::Context &BI; 878a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola bool Result; 879bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola FunctionIsDirectlyRecursive(StringRef N, const Builtin::Context &C) : 880bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola Name(N), BI(C), Result(false) { 881a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola } 882a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola typedef RecursiveASTVisitor<FunctionIsDirectlyRecursive> Base; 883a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola 884a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola bool TraverseCallExpr(CallExpr *E) { 885bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola const FunctionDecl *FD = E->getDirectCallee(); 886bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola if (!FD) 887a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola return true; 888bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola AsmLabelAttr *Attr = FD->getAttr<AsmLabelAttr>(); 889bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola if (Attr && Name == Attr->getLabel()) { 890bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola Result = true; 891bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola return false; 892bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola } 893bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola unsigned BuiltinID = FD->getBuiltinID(); 894bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola if (!BuiltinID) 895a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola return true; 896f6b56374e4e5b9f0078efac5ed4918c3a04296f7Nick Lewycky StringRef BuiltinName = BI.GetName(BuiltinID); 897f6b56374e4e5b9f0078efac5ed4918c3a04296f7Nick Lewycky if (BuiltinName.startswith("__builtin_") && 898f6b56374e4e5b9f0078efac5ed4918c3a04296f7Nick Lewycky Name == BuiltinName.slice(strlen("__builtin_"), StringRef::npos)) { 899a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola Result = true; 900a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola return false; 901a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola } 902a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola return true; 903a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola } 904a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola }; 905a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola} 906a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola 907bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola// isTriviallyRecursive - Check if this function calls another 908bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola// decl that, because of the asm attribute or the other decl being a builtin, 909bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola// ends up pointing to itself. 910a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindolabool 911bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael EspindolaCodeGenModule::isTriviallyRecursive(const FunctionDecl *FD) { 912bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola StringRef Name; 913bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola if (getCXXABI().getMangleContext().shouldMangleDeclName(FD)) { 91422afaccd9ab77d46106e94c47907d955a014ae3fNick Lewycky // asm labels are a special kind of mangling we have to support. 915bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola AsmLabelAttr *Attr = FD->getAttr<AsmLabelAttr>(); 916bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola if (!Attr) 917bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola return false; 918bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola Name = Attr->getLabel(); 919bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola } else { 920bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola Name = FD->getName(); 921bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola } 922a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola 923bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola FunctionIsDirectlyRecursive Walker(Name, Context.BuiltinInfo); 924bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola Walker.TraverseFunctionDecl(const_cast<FunctionDecl*>(FD)); 925a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola return Walker.Result; 926a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola} 927a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola 928a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindolabool 929a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael EspindolaCodeGenModule::shouldEmitFunction(const FunctionDecl *F) { 930a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola if (getFunctionLinkage(F) != llvm::Function::AvailableExternallyLinkage) 931a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola return true; 932cc4889f72ec68319969ba51e214d9940eb9327e5Rafael Espindola if (CodeGenOpts.OptimizationLevel == 0 && 933cc4889f72ec68319969ba51e214d9940eb9327e5Rafael Espindola !F->hasAttr<AlwaysInlineAttr>()) 934a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola return false; 935a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola // PR9614. Avoid cases where the source code is lying to us. An available 936a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola // externally function should have an equivalent function somewhere else, 937a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola // but a function that calls itself is clearly not equivalent to the real 938a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola // implementation. 939a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola // This happens in glibc's btowc and in some configure checks. 940bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola return !isTriviallyRecursive(F); 941a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola} 942a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola 943b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattnervoid CodeGenModule::EmitGlobalDefinition(GlobalDecl GD) { 9444a6835e650ff24e19ce08a3bd347c0ad186777fdAnders Carlsson const ValueDecl *D = cast<ValueDecl>(GD.getDecl()); 9451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 946cb421fa690da545b58a720abe5f1c49b166dbde7Dan Gohman PrettyStackTraceDecl CrashInfo(const_cast<ValueDecl *>(D), D->getLocation(), 9478e2efcc267ed12dc435782288b7f9a4a1bc56c72Anders Carlsson Context.getSourceManager(), 9488e2efcc267ed12dc435782288b7f9a4a1bc56c72Anders Carlsson "Generating code for declaration"); 9498e2efcc267ed12dc435782288b7f9a4a1bc56c72Anders Carlsson 95044eac33ae12df384f3f002102f919f603bee330fDouglas Gregor if (const FunctionDecl *Function = dyn_cast<FunctionDecl>(D)) { 95144eac33ae12df384f3f002102f919f603bee330fDouglas Gregor // At -O0, don't generate IR for functions with available_externally 95244eac33ae12df384f3f002102f919f603bee330fDouglas Gregor // linkage. 953a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola if (!shouldEmitFunction(Function)) 95444eac33ae12df384f3f002102f919f603bee330fDouglas Gregor return; 95544eac33ae12df384f3f002102f919f603bee330fDouglas Gregor 95644eac33ae12df384f3f002102f919f603bee330fDouglas Gregor if (const CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(D)) { 9577dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman // Make sure to emit the definition(s) before we emit the thunks. 9587dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman // This is necessary for the generation of certain thunks. 9597dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman if (const CXXConstructorDecl *CD = dyn_cast<CXXConstructorDecl>(Method)) 9607dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman EmitCXXConstructor(CD, GD.getCtorType()); 9617dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman else if (const CXXDestructorDecl *DD =dyn_cast<CXXDestructorDecl>(Method)) 9627dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman EmitCXXDestructor(DD, GD.getDtorType()); 9637dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman else 9647dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman EmitGlobalFunctionDefinition(GD); 9657dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman 96644eac33ae12df384f3f002102f919f603bee330fDouglas Gregor if (Method->isVirtual()) 96744eac33ae12df384f3f002102f919f603bee330fDouglas Gregor getVTables().EmitThunks(GD); 9687270ee4cd4794281c09dfb6931a98bbb2581ef02Anders Carlsson 9697dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman return; 97044eac33ae12df384f3f002102f919f603bee330fDouglas Gregor } 971b5e8156ebd6accd27daeaae6971597c45d5e5139Chris Lattner 972b5e8156ebd6accd27daeaae6971597c45d5e5139Chris Lattner return EmitGlobalFunctionDefinition(GD); 97344eac33ae12df384f3f002102f919f603bee330fDouglas Gregor } 974b5e8156ebd6accd27daeaae6971597c45d5e5139Chris Lattner 975b5e8156ebd6accd27daeaae6971597c45d5e5139Chris Lattner if (const VarDecl *VD = dyn_cast<VarDecl>(D)) 976b5e8156ebd6accd27daeaae6971597c45d5e5139Chris Lattner return EmitGlobalVarDefinition(VD); 9774357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner 978b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("Invalid argument to EmitGlobalDefinition()"); 979bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar} 980bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 98174391b48b4791cded373683a3baf67314f358d50Chris Lattner/// GetOrCreateLLVMFunction - If the specified mangled name is not in the 98274391b48b4791cded373683a3baf67314f358d50Chris Lattner/// module, create and return an llvm Function with the specified type. If there 98374391b48b4791cded373683a3baf67314f358d50Chris Lattner/// is something in the module with the specified name, return it potentially 98474391b48b4791cded373683a3baf67314f358d50Chris Lattner/// bitcasted to the right type. 98574391b48b4791cded373683a3baf67314f358d50Chris Lattner/// 98674391b48b4791cded373683a3baf67314f358d50Chris Lattner/// If D is non-null, it specifies a decl that correspond to this. This is used 98774391b48b4791cded373683a3baf67314f358d50Chris Lattner/// to set the attributes on the function when it is first created. 988f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCallllvm::Constant * 9895f9e272e632e951b1efe824cd16acb4d96077930Chris LattnerCodeGenModule::GetOrCreateLLVMFunction(StringRef MangledName, 9902acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *Ty, 991f85e193739c953358c865005855253af4f68a497John McCall GlobalDecl D, bool ForVTable, 992f85e193739c953358c865005855253af4f68a497John McCall llvm::Attributes ExtraAttrs) { 9930558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner // Lookup the entry, lazily creating it if necessary. 994f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall llvm::GlobalValue *Entry = GetGlobalValue(MangledName); 9950558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner if (Entry) { 9966a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola if (WeakRefReferences.count(Entry)) { 9976a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola const FunctionDecl *FD = cast_or_null<FunctionDecl>(D.getDecl()); 9986a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola if (FD && !FD->hasAttr<WeakAttr>()) 9997270ee4cd4794281c09dfb6931a98bbb2581ef02Anders Carlsson Entry->setLinkage(llvm::Function::ExternalLinkage); 10006a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola 10016a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola WeakRefReferences.erase(Entry); 10026a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola } 10036a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola 10040558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner if (Entry->getType()->getElementType() == Ty) 10050558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner return Entry; 10061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10070558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner // Make sure the result is of the correct type. 10089cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner return llvm::ConstantExpr::getBitCast(Entry, Ty->getPointerTo()); 10090558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner } 10101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1011654ad40f27d684e8f3eddbc990247a6dbea5ddedEli Friedman // This function doesn't have a complete type (for example, the return 1012654ad40f27d684e8f3eddbc990247a6dbea5ddedEli Friedman // type is an incomplete struct). Use a fake type instead, and make 1013654ad40f27d684e8f3eddbc990247a6dbea5ddedEli Friedman // sure not to try to set attributes. 1014654ad40f27d684e8f3eddbc990247a6dbea5ddedEli Friedman bool IsIncompleteFunction = false; 1015784f21121a6c9418ebd86baa6814e36e1176c410John McCall 10162acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::FunctionType *FTy; 1017784f21121a6c9418ebd86baa6814e36e1176c410John McCall if (isa<llvm::FunctionType>(Ty)) { 1018784f21121a6c9418ebd86baa6814e36e1176c410John McCall FTy = cast<llvm::FunctionType>(Ty); 1019784f21121a6c9418ebd86baa6814e36e1176c410John McCall } else { 10200774cb84719f2aea3016493a2bbd9a02aa3e0541John McCall FTy = llvm::FunctionType::get(VoidTy, false); 1021654ad40f27d684e8f3eddbc990247a6dbea5ddedEli Friedman IsIncompleteFunction = true; 1022654ad40f27d684e8f3eddbc990247a6dbea5ddedEli Friedman } 1023bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner 1024784f21121a6c9418ebd86baa6814e36e1176c410John McCall llvm::Function *F = llvm::Function::Create(FTy, 1025654ad40f27d684e8f3eddbc990247a6dbea5ddedEli Friedman llvm::Function::ExternalLinkage, 1026f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall MangledName, &getModule()); 1027f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall assert(F->getName() == MangledName && "name was uniqued!"); 1028654ad40f27d684e8f3eddbc990247a6dbea5ddedEli Friedman if (D.getDecl()) 1029b2bcf1c176b200b36f371e189ce22f93c86cdf45Anders Carlsson SetFunctionAttributes(D, F, IsIncompleteFunction); 1030f85e193739c953358c865005855253af4f68a497John McCall if (ExtraAttrs != llvm::Attribute::None) 1031f85e193739c953358c865005855253af4f68a497John McCall F->addFnAttr(ExtraAttrs); 1032654ad40f27d684e8f3eddbc990247a6dbea5ddedEli Friedman 103367b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // This is the first use or definition of a mangled name. If there is a 103467b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // deferred decl with this name, remember that we need to emit it at the end 103567b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // of the file. 1036f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall llvm::StringMap<GlobalDecl>::iterator DDI = DeferredDecls.find(MangledName); 103767b00520c8f5b48fad722b790d87fea6be764efeChris Lattner if (DDI != DeferredDecls.end()) { 103867b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Move the potentially referenced deferred decl to the DeferredDeclsToEmit 103967b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // list, and remove it from DeferredDecls (since we don't need it anymore). 104067b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDeclsToEmit.push_back(DDI->second); 104167b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDecls.erase(DDI); 1042bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall 1043bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall // Otherwise, there are cases we have to worry about where we're 1044bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall // using a declaration for which we must emit a definition but where 1045bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall // we might not find a top-level definition: 1046bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall // - member functions defined inline in their classes 1047bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall // - friend functions defined inline in some class 1048bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall // - special member functions with implicit definitions 1049bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall // If we ever change our AST traversal to walk into class methods, 1050bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall // this will be unnecessary. 10511faa89f9c619e4b2411fab4af7e22ee7a2bd9009Anders Carlsson // 10521faa89f9c619e4b2411fab4af7e22ee7a2bd9009Anders Carlsson // We also don't emit a definition for a function if it's going to be an entry 10531faa89f9c619e4b2411fab4af7e22ee7a2bd9009Anders Carlsson // in a vtable, unless it's already marked as used. 10544e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie } else if (getLangOpts().CPlusPlus && D.getDecl()) { 1055bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall // Look for a declaration that's lexically in a record. 1056bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall const FunctionDecl *FD = cast<FunctionDecl>(D.getDecl()); 1057bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall do { 1058bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall if (isa<CXXRecordDecl>(FD->getLexicalDeclContext())) { 10591faa89f9c619e4b2411fab4af7e22ee7a2bd9009Anders Carlsson if (FD->isImplicit() && !ForVTable) { 1060bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall assert(FD->isUsed() && "Sema didn't mark implicit function as used!"); 1061a29bf41b8f49578207ce36f6b21ff9bb7ee77babDouglas Gregor DeferredDeclsToEmit.push_back(D.getWithDecl(FD)); 1062bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall break; 106310620eb5164e31208fcbf0437cd79ae535ed0559Sean Hunt } else if (FD->doesThisDeclarationHaveABody()) { 1064a29bf41b8f49578207ce36f6b21ff9bb7ee77babDouglas Gregor DeferredDeclsToEmit.push_back(D.getWithDecl(FD)); 1065bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall break; 1066bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall } 10677b9a5aa7c0d76f577699d25ce6afe21ecccb60b7Rafael Espindola } 1068ef96ee0be5f100789f451641542a69cd719144d2Douglas Gregor FD = FD->getPreviousDecl(); 1069bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall } while (FD); 107067b00520c8f5b48fad722b790d87fea6be764efeChris Lattner } 10711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1072784f21121a6c9418ebd86baa6814e36e1176c410John McCall // Make sure the result is of the requested type. 1073784f21121a6c9418ebd86baa6814e36e1176c410John McCall if (!IsIncompleteFunction) { 1074784f21121a6c9418ebd86baa6814e36e1176c410John McCall assert(F->getType()->getElementType() == Ty); 1075784f21121a6c9418ebd86baa6814e36e1176c410John McCall return F; 1076784f21121a6c9418ebd86baa6814e36e1176c410John McCall } 1077784f21121a6c9418ebd86baa6814e36e1176c410John McCall 10789cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *PTy = llvm::PointerType::getUnqual(Ty); 1079784f21121a6c9418ebd86baa6814e36e1176c410John McCall return llvm::ConstantExpr::getBitCast(F, PTy); 10800558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner} 10810558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner 108274391b48b4791cded373683a3baf67314f358d50Chris Lattner/// GetAddrOfFunction - Return the address of the given function. If Ty is 108374391b48b4791cded373683a3baf67314f358d50Chris Lattner/// non-null, then this function will use the specified type if it has to 108474391b48b4791cded373683a3baf67314f358d50Chris Lattner/// create it (this occurs when we see a definition of the function). 1085b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattnerllvm::Constant *CodeGenModule::GetAddrOfFunction(GlobalDecl GD, 10862acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *Ty, 10871faa89f9c619e4b2411fab4af7e22ee7a2bd9009Anders Carlsson bool ForVTable) { 108874391b48b4791cded373683a3baf67314f358d50Chris Lattner // If there was no specific requested type, just convert it now. 108974391b48b4791cded373683a3baf67314f358d50Chris Lattner if (!Ty) 10904a6835e650ff24e19ce08a3bd347c0ad186777fdAnders Carlsson Ty = getTypes().ConvertType(cast<ValueDecl>(GD.getDecl())->getType()); 1091bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner 10925f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef MangledName = getMangledName(GD); 10931faa89f9c619e4b2411fab4af7e22ee7a2bd9009Anders Carlsson return GetOrCreateLLVMFunction(MangledName, Ty, GD, ForVTable); 109474391b48b4791cded373683a3baf67314f358d50Chris Lattner} 109577ba708819285931932ecd33691a672bb59d221aEli Friedman 109674391b48b4791cded373683a3baf67314f358d50Chris Lattner/// CreateRuntimeFunction - Create a new runtime function with the specified 109774391b48b4791cded373683a3baf67314f358d50Chris Lattner/// type and name. 109874391b48b4791cded373683a3baf67314f358d50Chris Lattnerllvm::Constant * 10992acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris LattnerCodeGenModule::CreateRuntimeFunction(llvm::FunctionType *FTy, 11005f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef Name, 1101f85e193739c953358c865005855253af4f68a497John McCall llvm::Attributes ExtraAttrs) { 1102f85e193739c953358c865005855253af4f68a497John McCall return GetOrCreateLLVMFunction(Name, FTy, GlobalDecl(), /*ForVTable=*/false, 1103f85e193739c953358c865005855253af4f68a497John McCall ExtraAttrs); 110474391b48b4791cded373683a3baf67314f358d50Chris Lattner} 1105bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 1106a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith/// isTypeConstant - Determine whether an object of this type can be emitted 1107a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith/// as a constant. 1108a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith/// 1109a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith/// If ExcludeCtor is true, the duration when the object's constructor runs 1110a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith/// will not be considered. The caller will need to verify that the object is 1111a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith/// not written to during its construction. 1112a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smithbool CodeGenModule::isTypeConstant(QualType Ty, bool ExcludeCtor) { 1113a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith if (!Ty.isConstant(Context) && !Ty->isReferenceType()) 111420e098b7e7fda6bed1d67441b56cce77cd3aa918Eli Friedman return false; 1115a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith 11164e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (Context.getLangOpts().CPlusPlus) { 1117a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith if (const CXXRecordDecl *Record 1118a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith = Context.getBaseElementType(Ty)->getAsCXXRecordDecl()) 1119a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith return ExcludeCtor && !Record->hasMutableFields() && 1120a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith Record->hasTrivialDestructor(); 112120e098b7e7fda6bed1d67441b56cce77cd3aa918Eli Friedman } 1122a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith 112320e098b7e7fda6bed1d67441b56cce77cd3aa918Eli Friedman return true; 112420e098b7e7fda6bed1d67441b56cce77cd3aa918Eli Friedman} 112520e098b7e7fda6bed1d67441b56cce77cd3aa918Eli Friedman 112674391b48b4791cded373683a3baf67314f358d50Chris Lattner/// GetOrCreateLLVMGlobal - If the specified mangled name is not in the module, 112774391b48b4791cded373683a3baf67314f358d50Chris Lattner/// create and return an llvm GlobalVariable with the specified type. If there 112874391b48b4791cded373683a3baf67314f358d50Chris Lattner/// is something in the module with the specified name, return it potentially 112974391b48b4791cded373683a3baf67314f358d50Chris Lattner/// bitcasted to the right type. 113074391b48b4791cded373683a3baf67314f358d50Chris Lattner/// 113174391b48b4791cded373683a3baf67314f358d50Chris Lattner/// If D is non-null, it specifies a decl that correspond to this. This is used 113274391b48b4791cded373683a3baf67314f358d50Chris Lattner/// to set the attributes on the global when it is first created. 1133f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCallllvm::Constant * 11345f9e272e632e951b1efe824cd16acb4d96077930Chris LattnerCodeGenModule::GetOrCreateLLVMGlobal(StringRef MangledName, 11352acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *Ty, 1136c532b502858032f377056dc8cba2fe43cba8702bRafael Espindola const VarDecl *D, 1137c532b502858032f377056dc8cba2fe43cba8702bRafael Espindola bool UnnamedAddr) { 11383c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar // Lookup the entry, lazily creating it if necessary. 1139f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall llvm::GlobalValue *Entry = GetGlobalValue(MangledName); 114099b53613ebe2c59d41030e987962c1ed101b2efeChris Lattner if (Entry) { 11416a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola if (WeakRefReferences.count(Entry)) { 11426a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola if (D && !D->hasAttr<WeakAttr>()) 11437270ee4cd4794281c09dfb6931a98bbb2581ef02Anders Carlsson Entry->setLinkage(llvm::Function::ExternalLinkage); 11446a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola 11456a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola WeakRefReferences.erase(Entry); 11466a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola } 11476a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola 1148c532b502858032f377056dc8cba2fe43cba8702bRafael Espindola if (UnnamedAddr) 1149c532b502858032f377056dc8cba2fe43cba8702bRafael Espindola Entry->setUnnamedAddr(true); 1150c532b502858032f377056dc8cba2fe43cba8702bRafael Espindola 115174391b48b4791cded373683a3baf67314f358d50Chris Lattner if (Entry->getType() == Ty) 1152570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner return Entry; 11531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 115499b53613ebe2c59d41030e987962c1ed101b2efeChris Lattner // Make sure the result is of the correct type. 11553c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson return llvm::ConstantExpr::getBitCast(Entry, Ty); 115699b53613ebe2c59d41030e987962c1ed101b2efeChris Lattner } 11571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 115867b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // This is the first use or definition of a mangled name. If there is a 115967b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // deferred decl with this name, remember that we need to emit it at the end 116067b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // of the file. 1161f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall llvm::StringMap<GlobalDecl>::iterator DDI = DeferredDecls.find(MangledName); 116267b00520c8f5b48fad722b790d87fea6be764efeChris Lattner if (DDI != DeferredDecls.end()) { 116367b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Move the potentially referenced deferred decl to the DeferredDeclsToEmit 116467b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // list, and remove it from DeferredDecls (since we don't need it anymore). 116567b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDeclsToEmit.push_back(DDI->second); 116667b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDecls.erase(DDI); 116767b00520c8f5b48fad722b790d87fea6be764efeChris Lattner } 11681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalVariable *GV = 11701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump new llvm::GlobalVariable(getModule(), Ty->getElementType(), false, 117199b53613ebe2c59d41030e987962c1ed101b2efeChris Lattner llvm::GlobalValue::ExternalLinkage, 1172f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall 0, MangledName, 0, 117356ebe5082da7411fb37479e230b52735f77cff35Eli Friedman false, Ty->getAddressSpace()); 117449988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar 117599b53613ebe2c59d41030e987962c1ed101b2efeChris Lattner // Handle things which are present even on external declarations. 117674391b48b4791cded373683a3baf67314f358d50Chris Lattner if (D) { 1177f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump // FIXME: This code is overly simple and should be merged with other global 1178f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump // handling. 1179a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith GV->setConstant(isTypeConstant(D->getType(), false)); 118049988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar 1181110e8e56af30363072c140285961592b0107f789John McCall // Set linkage and visibility in case we never see a definition. 1182af14603ca61757cf4361b583b45639a04c57e651John McCall NamedDecl::LinkageInfo LV = D->getLinkageAndVisibility(); 1183af14603ca61757cf4361b583b45639a04c57e651John McCall if (LV.linkage() != ExternalLinkage) { 118415e310a3b970b64a84cb30f0005bc396b4d978cbJohn McCall // Don't set internal linkage on declarations. 1185110e8e56af30363072c140285961592b0107f789John McCall } else { 1186110e8e56af30363072c140285961592b0107f789John McCall if (D->hasAttr<DLLImportAttr>()) 1187110e8e56af30363072c140285961592b0107f789John McCall GV->setLinkage(llvm::GlobalValue::DLLImportLinkage); 11880a0d2b179085a52c10402feebeb6db8b4d96a140Douglas Gregor else if (D->hasAttr<WeakAttr>() || D->isWeakImported()) 1189110e8e56af30363072c140285961592b0107f789John McCall GV->setLinkage(llvm::GlobalValue::ExternalWeakLinkage); 1190110e8e56af30363072c140285961592b0107f789John McCall 1191af14603ca61757cf4361b583b45639a04c57e651John McCall // Set visibility on a declaration only if it's explicit. 1192af14603ca61757cf4361b583b45639a04c57e651John McCall if (LV.visibilityExplicit()) 1193af14603ca61757cf4361b583b45639a04c57e651John McCall GV->setVisibility(GetLLVMVisibility(LV.visibility())); 1194110e8e56af30363072c140285961592b0107f789John McCall } 119556ebe5082da7411fb37479e230b52735f77cff35Eli Friedman 119656ebe5082da7411fb37479e230b52735f77cff35Eli Friedman GV->setThreadLocal(D->isThreadSpecified()); 119774391b48b4791cded373683a3baf67314f358d50Chris Lattner } 11981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1199f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall return GV; 120074391b48b4791cded373683a3baf67314f358d50Chris Lattner} 1201eda9a5ec380f172f4e0063744eb796144a125480Daniel Dunbar 1202eda9a5ec380f172f4e0063744eb796144a125480Daniel Dunbar 12033bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlssonllvm::GlobalVariable * 12045f9e272e632e951b1efe824cd16acb4d96077930Chris LattnerCodeGenModule::CreateOrReplaceCXXRuntimeVariable(StringRef Name, 12052acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *Ty, 12063bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson llvm::GlobalValue::LinkageTypes Linkage) { 12073bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson llvm::GlobalVariable *GV = getModule().getNamedGlobal(Name); 12083bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson llvm::GlobalVariable *OldGV = 0; 12093bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson 12103bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson 12113bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson if (GV) { 12123bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson // Check if the variable has the right type. 12133bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson if (GV->getType()->getElementType() == Ty) 12143bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson return GV; 12153bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson 12163bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson // Because C++ name mangling, the only way we can end up with an already 12173bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson // existing global with the same name is if it has been declared extern "C". 121896eaf2992b5955d1470fc9cce7a96e7e1e3b4ea7Anders Carlsson assert(GV->isDeclaration() && "Declaration has wrong type!"); 12193bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson OldGV = GV; 12203bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson } 12213bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson 12223bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson // Create a new variable. 12233bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson GV = new llvm::GlobalVariable(getModule(), Ty, /*isConstant=*/true, 12243bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson Linkage, 0, Name); 12253bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson 12263bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson if (OldGV) { 12273bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson // Replace occurrences of the old variable if needed. 12283bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson GV->takeName(OldGV); 12293bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson 12303bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson if (!OldGV->use_empty()) { 12313bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson llvm::Constant *NewPtrForOldDecl = 12323bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson llvm::ConstantExpr::getBitCast(GV, OldGV->getType()); 12333bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson OldGV->replaceAllUsesWith(NewPtrForOldDecl); 12343bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson } 12353bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson 12363bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson OldGV->eraseFromParent(); 12373bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson } 12383bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson 12393bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson return GV; 12403bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson} 12413bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson 124274391b48b4791cded373683a3baf67314f358d50Chris Lattner/// GetAddrOfGlobalVar - Return the llvm::Constant for the address of the 124374391b48b4791cded373683a3baf67314f358d50Chris Lattner/// given global variable. If Ty is non-null and if the global doesn't exist, 12440ff258b933fe385425bf2a85429bf46376d338f1Eric Christopher/// then it will be created with the specified type instead of whatever the 124574391b48b4791cded373683a3baf67314f358d50Chris Lattner/// normal requested type would be. 124674391b48b4791cded373683a3baf67314f358d50Chris Lattnerllvm::Constant *CodeGenModule::GetAddrOfGlobalVar(const VarDecl *D, 12472acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *Ty) { 124874391b48b4791cded373683a3baf67314f358d50Chris Lattner assert(D->hasGlobalStorage() && "Not a global variable"); 124974391b48b4791cded373683a3baf67314f358d50Chris Lattner QualType ASTTy = D->getType(); 125074391b48b4791cded373683a3baf67314f358d50Chris Lattner if (Ty == 0) 125174391b48b4791cded373683a3baf67314f358d50Chris Lattner Ty = getTypes().ConvertTypeForMem(ASTTy); 12521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12532acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *PTy = 1254207f4d8543529221932af82836016a2ef066c917Peter Collingbourne llvm::PointerType::get(Ty, getContext().getTargetAddressSpace(ASTTy)); 1255f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall 12565f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef MangledName = getMangledName(D); 1257f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall return GetOrCreateLLVMGlobal(MangledName, PTy, D); 125874391b48b4791cded373683a3baf67314f358d50Chris Lattner} 12593f75c43bd77e063342bc888ac276daf64ba0ce07Daniel Dunbar 126074391b48b4791cded373683a3baf67314f358d50Chris Lattner/// CreateRuntimeVariable - Create a new runtime global variable with the 126174391b48b4791cded373683a3baf67314f358d50Chris Lattner/// specified type and name. 126274391b48b4791cded373683a3baf67314f358d50Chris Lattnerllvm::Constant * 12632acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris LattnerCodeGenModule::CreateRuntimeVariable(llvm::Type *Ty, 12645f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef Name) { 12651de4d4e8cb2e9c88809fea8092bc6e835a5473d2John McCall return GetOrCreateLLVMGlobal(Name, llvm::PointerType::getUnqual(Ty), 0, 1266c532b502858032f377056dc8cba2fe43cba8702bRafael Espindola true); 1267bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar} 1268bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 126903f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbarvoid CodeGenModule::EmitTentativeDefinition(const VarDecl *D) { 127003f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar assert(!D->getInit() && "Cannot emit definite definitions here!"); 127103f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar 12727520bd1de12af10ea08c662440565adbdf589317Douglas Gregor if (MayDeferGeneration(D)) { 12737520bd1de12af10ea08c662440565adbdf589317Douglas Gregor // If we have not seen a reference to this variable yet, place it 12747520bd1de12af10ea08c662440565adbdf589317Douglas Gregor // into the deferred declarations table to be emitted if needed 12757520bd1de12af10ea08c662440565adbdf589317Douglas Gregor // later. 12765f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef MangledName = getMangledName(D); 1277f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall if (!GetGlobalValue(MangledName)) { 1278555b4bb2749aea2ec8e2adc351a71ec1cb9bdc33Anders Carlsson DeferredDecls[MangledName] = D; 127903f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar return; 12807520bd1de12af10ea08c662440565adbdf589317Douglas Gregor } 12817520bd1de12af10ea08c662440565adbdf589317Douglas Gregor } 12827520bd1de12af10ea08c662440565adbdf589317Douglas Gregor 12837520bd1de12af10ea08c662440565adbdf589317Douglas Gregor // The tentative definition is the only definition. 128403f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar EmitGlobalVarDefinition(D); 128503f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar} 128603f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar 12876fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregorvoid CodeGenModule::EmitVTable(CXXRecordDecl *Class, bool DefinitionRequired) { 12886fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor if (DefinitionRequired) 12896fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor getVTables().GenerateClassData(getVTableLinkage(Class), Class); 12906fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor} 12916fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor 12924b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregorllvm::GlobalVariable::LinkageTypes 1293046c294a43024874ff35656c6e785b64e72f1f36Anders CarlssonCodeGenModule::getVTableLinkage(const CXXRecordDecl *RD) { 1294cb5d2d0647fdab2e36c85b417e03bf18916ce10cEli Friedman if (RD->getLinkage() != ExternalLinkage) 1295dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor return llvm::GlobalVariable::InternalLinkage; 1296dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor 1297dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor if (const CXXMethodDecl *KeyFunction 1298dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor = RD->getASTContext().getKeyFunction(RD)) { 1299dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor // If this class has a key function, use that to determine the linkage of 1300dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor // the vtable. 13014b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor const FunctionDecl *Def = 0; 130206a54a38be5054c910ffc92db60edab23f9ea105Argyrios Kyrtzidis if (KeyFunction->hasBody(Def)) 13034b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor KeyFunction = cast<CXXMethodDecl>(Def); 1304dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor 13054b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor switch (KeyFunction->getTemplateSpecializationKind()) { 13064b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor case TSK_Undeclared: 13074b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor case TSK_ExplicitSpecialization: 13086d7f8473cd6e967b3676948894ce72472102f9cbAnders Carlsson // When compiling with optimizations turned on, we emit all vtables, 13096d7f8473cd6e967b3676948894ce72472102f9cbAnders Carlsson // even if the key function is not defined in the current translation 13106d7f8473cd6e967b3676948894ce72472102f9cbAnders Carlsson // unit. If this is the case, use available_externally linkage. 13116d7f8473cd6e967b3676948894ce72472102f9cbAnders Carlsson if (!Def && CodeGenOpts.OptimizationLevel) 13126d7f8473cd6e967b3676948894ce72472102f9cbAnders Carlsson return llvm::GlobalVariable::AvailableExternallyLinkage; 13136d7f8473cd6e967b3676948894ce72472102f9cbAnders Carlsson 13144b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor if (KeyFunction->isInlined()) 13154e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return !Context.getLangOpts().AppleKext ? 1316142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian llvm::GlobalVariable::LinkOnceODRLinkage : 1317142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian llvm::Function::InternalLinkage; 13184b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor 13194b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor return llvm::GlobalVariable::ExternalLinkage; 13204b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor 13214b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor case TSK_ImplicitInstantiation: 13224e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return !Context.getLangOpts().AppleKext ? 1323142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian llvm::GlobalVariable::LinkOnceODRLinkage : 1324142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian llvm::Function::InternalLinkage; 1325f502d93b0ea970bfbd897e657f8d940a20984de2Anders Carlsson 13264b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor case TSK_ExplicitInstantiationDefinition: 13274e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return !Context.getLangOpts().AppleKext ? 1328142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian llvm::GlobalVariable::WeakODRLinkage : 1329142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian llvm::Function::InternalLinkage; 1330f502d93b0ea970bfbd897e657f8d940a20984de2Anders Carlsson 13314b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor case TSK_ExplicitInstantiationDeclaration: 13324b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor // FIXME: Use available_externally linkage. However, this currently 13334b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor // breaks LLVM's build due to undefined symbols. 13344b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor // return llvm::GlobalVariable::AvailableExternallyLinkage; 13354e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return !Context.getLangOpts().AppleKext ? 1336142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian llvm::GlobalVariable::LinkOnceODRLinkage : 1337142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian llvm::Function::InternalLinkage; 13384b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor } 1339dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor } 1340dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor 13414e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (Context.getLangOpts().AppleKext) 134253bad4e98ed5e765df4231099bf1c737582908bfFariborz Jahanian return llvm::Function::InternalLinkage; 134353bad4e98ed5e765df4231099bf1c737582908bfFariborz Jahanian 1344dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor switch (RD->getTemplateSpecializationKind()) { 1345dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor case TSK_Undeclared: 1346dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor case TSK_ExplicitSpecialization: 1347dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor case TSK_ImplicitInstantiation: 1348dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor // FIXME: Use available_externally linkage. However, this currently 1349dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor // breaks LLVM's build due to undefined symbols. 1350dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor // return llvm::GlobalVariable::AvailableExternallyLinkage; 1351142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian case TSK_ExplicitInstantiationDeclaration: 135253bad4e98ed5e765df4231099bf1c737582908bfFariborz Jahanian return llvm::GlobalVariable::LinkOnceODRLinkage; 1353142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian 1354142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian case TSK_ExplicitInstantiationDefinition: 135553bad4e98ed5e765df4231099bf1c737582908bfFariborz Jahanian return llvm::GlobalVariable::WeakODRLinkage; 13564b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor } 13573026348bd4c13a0f83b59839f64065e0fcbea253David Blaikie 13583026348bd4c13a0f83b59839f64065e0fcbea253David Blaikie llvm_unreachable("Invalid TemplateSpecializationKind!"); 13594b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor} 13604b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor 13612acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris LattnerCharUnits CodeGenModule::GetTargetTypeStoreSize(llvm::Type *Ty) const { 136206f486ecd05bd6788da97c39164c1903a084c26dKen Dyck return Context.toCharUnitsFromBits( 136306f486ecd05bd6788da97c39164c1903a084c26dKen Dyck TheTargetData.getTypeStoreSizeInBits(Ty)); 1364687cc4a850b59116efee061018f0d8df50728b82Ken Dyck} 1365687cc4a850b59116efee061018f0d8df50728b82Ken Dyck 136619b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redlllvm::Constant * 136719b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian RedlCodeGenModule::MaybeEmitGlobalStdInitializerListInitializer(const VarDecl *D, 136819b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl const Expr *rawInit) { 136919b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl ArrayRef<ExprWithCleanups::CleanupObject> cleanups; 137019b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl if (const ExprWithCleanups *withCleanups = 137119b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl dyn_cast<ExprWithCleanups>(rawInit)) { 137219b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl cleanups = withCleanups->getObjects(); 137319b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl rawInit = withCleanups->getSubExpr(); 137419b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl } 137519b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 137619b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl const InitListExpr *init = dyn_cast<InitListExpr>(rawInit); 137719b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl if (!init || !init->initializesStdInitializerList() || 137819b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl init->getNumInits() == 0) 137919b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl return 0; 138019b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 138119b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl ASTContext &ctx = getContext(); 138219b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl unsigned numInits = init->getNumInits(); 1383062a82cdfab01d95f7fa3d759342e6f2ee5c51b0Sebastian Redl // FIXME: This check is here because we would otherwise silently miscompile 1384062a82cdfab01d95f7fa3d759342e6f2ee5c51b0Sebastian Redl // nested global std::initializer_lists. Better would be to have a real 1385062a82cdfab01d95f7fa3d759342e6f2ee5c51b0Sebastian Redl // implementation. 1386062a82cdfab01d95f7fa3d759342e6f2ee5c51b0Sebastian Redl for (unsigned i = 0; i < numInits; ++i) { 1387062a82cdfab01d95f7fa3d759342e6f2ee5c51b0Sebastian Redl const InitListExpr *inner = dyn_cast<InitListExpr>(init->getInit(i)); 1388062a82cdfab01d95f7fa3d759342e6f2ee5c51b0Sebastian Redl if (inner && inner->initializesStdInitializerList()) { 1389062a82cdfab01d95f7fa3d759342e6f2ee5c51b0Sebastian Redl ErrorUnsupported(inner, "nested global std::initializer_list"); 1390062a82cdfab01d95f7fa3d759342e6f2ee5c51b0Sebastian Redl return 0; 1391062a82cdfab01d95f7fa3d759342e6f2ee5c51b0Sebastian Redl } 1392062a82cdfab01d95f7fa3d759342e6f2ee5c51b0Sebastian Redl } 1393062a82cdfab01d95f7fa3d759342e6f2ee5c51b0Sebastian Redl 1394062a82cdfab01d95f7fa3d759342e6f2ee5c51b0Sebastian Redl // Synthesize a fake VarDecl for the array and initialize that. 139519b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl QualType elementType = init->getInit(0)->getType(); 139619b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl llvm::APInt numElements(ctx.getTypeSize(ctx.getSizeType()), numInits); 139719b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl QualType arrayType = ctx.getConstantArrayType(elementType, numElements, 139819b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl ArrayType::Normal, 0); 139919b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 140019b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl IdentifierInfo *name = &ctx.Idents.get(D->getNameAsString() + "__initlist"); 140119b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl TypeSourceInfo *sourceInfo = ctx.getTrivialTypeSourceInfo( 140219b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl arrayType, D->getLocation()); 140319b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl VarDecl *backingArray = VarDecl::Create(ctx, const_cast<DeclContext*>( 140419b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl D->getDeclContext()), 140519b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl D->getLocStart(), D->getLocation(), 140619b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl name, arrayType, sourceInfo, 140719b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl SC_Static, SC_Static); 140819b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 140919b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // Now clone the InitListExpr to initialize the array instead. 141019b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // Incredible hack: we want to use the existing InitListExpr here, so we need 141119b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // to tell it that it no longer initializes a std::initializer_list. 141219b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl Expr *arrayInit = new (ctx) InitListExpr(ctx, init->getLBraceLoc(), 141319b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl const_cast<InitListExpr*>(init)->getInits(), 141419b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl init->getNumInits(), 141519b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl init->getRBraceLoc()); 141619b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl arrayInit->setType(arrayType); 141719b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 141819b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl if (!cleanups.empty()) 141919b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl arrayInit = ExprWithCleanups::Create(ctx, arrayInit, cleanups); 142019b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 142119b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl backingArray->setInit(arrayInit); 142219b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 142319b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // Emit the definition of the array. 142419b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl EmitGlobalVarDefinition(backingArray); 142519b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 142619b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // Inspect the initializer list to validate it and determine its type. 142719b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // FIXME: doing this every time is probably inefficient; caching would be nice 142819b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl RecordDecl *record = init->getType()->castAs<RecordType>()->getDecl(); 142919b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl RecordDecl::field_iterator field = record->field_begin(); 143019b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl if (field == record->field_end()) { 143119b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl ErrorUnsupported(D, "weird std::initializer_list"); 143219b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl return 0; 143319b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl } 143419b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl QualType elementPtr = ctx.getPointerType(elementType.withConst()); 143519b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // Start pointer. 143619b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl if (!ctx.hasSameType(field->getType(), elementPtr)) { 143719b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl ErrorUnsupported(D, "weird std::initializer_list"); 143819b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl return 0; 143919b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl } 144019b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl ++field; 144119b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl if (field == record->field_end()) { 144219b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl ErrorUnsupported(D, "weird std::initializer_list"); 144319b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl return 0; 144419b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl } 144519b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl bool isStartEnd = false; 144619b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl if (ctx.hasSameType(field->getType(), elementPtr)) { 144719b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // End pointer. 144819b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl isStartEnd = true; 144919b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl } else if(!ctx.hasSameType(field->getType(), ctx.getSizeType())) { 145019b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl ErrorUnsupported(D, "weird std::initializer_list"); 145119b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl return 0; 145219b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl } 145319b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 145419b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // Now build an APValue representing the std::initializer_list. 145519b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl APValue initListValue(APValue::UninitStruct(), 0, 2); 145619b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl APValue &startField = initListValue.getStructField(0); 145719b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl APValue::LValuePathEntry startOffsetPathEntry; 145819b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl startOffsetPathEntry.ArrayIndex = 0; 145919b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl startField = APValue(APValue::LValueBase(backingArray), 146019b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl CharUnits::fromQuantity(0), 146119b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl llvm::makeArrayRef(startOffsetPathEntry), 146219b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl /*IsOnePastTheEnd=*/false, 0); 146319b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 146419b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl if (isStartEnd) { 146519b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl APValue &endField = initListValue.getStructField(1); 146619b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl APValue::LValuePathEntry endOffsetPathEntry; 146719b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl endOffsetPathEntry.ArrayIndex = numInits; 146819b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl endField = APValue(APValue::LValueBase(backingArray), 146919b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl ctx.getTypeSizeInChars(elementType) * numInits, 147019b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl llvm::makeArrayRef(endOffsetPathEntry), 147119b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl /*IsOnePastTheEnd=*/true, 0); 147219b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl } else { 147319b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl APValue &sizeField = initListValue.getStructField(1); 147419b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl sizeField = APValue(llvm::APSInt(numElements)); 147519b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl } 147619b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 147719b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // Emit the constant for the initializer_list. 1478a3ca41f0c2bd1c4a752df88b283332f3b757d21eRichard Smith llvm::Constant *llvmInit = 1479a3ca41f0c2bd1c4a752df88b283332f3b757d21eRichard Smith EmitConstantValueForMemory(initListValue, D->getType()); 148019b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl assert(llvmInit && "failed to initialize as constant"); 148119b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl return llvmInit; 148219b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl} 148319b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 1484bd012ff1fa088181646a784f385b28867372d434Daniel Dunbarvoid CodeGenModule::EmitGlobalVarDefinition(const VarDecl *D) { 14858f32f7189b12f67aa4a19bc7c3855b599980eca0Chris Lattner llvm::Constant *Init = 0; 148677ba708819285931932ecd33691a672bb59d221aEli Friedman QualType ASTTy = D->getType(); 14877ca4850a3e3530fa6c93b64b740446e32c97f992Richard Smith CXXRecordDecl *RD = ASTTy->getBaseElementTypeUnsafe()->getAsCXXRecordDecl(); 14887ca4850a3e3530fa6c93b64b740446e32c97f992Richard Smith bool NeedsGlobalCtor = false; 14897ca4850a3e3530fa6c93b64b740446e32c97f992Richard Smith bool NeedsGlobalDtor = RD && !RD->hasTrivialDestructor(); 14901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14912d6a5670465cb3f1d811695a9f23e372508240d2Richard Smith const VarDecl *InitDecl; 14922d6a5670465cb3f1d811695a9f23e372508240d2Richard Smith const Expr *InitExpr = D->getAnyInitializer(InitDecl); 149319b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 14943bb92693c3332c1e99870a4e45afff3892e1c6aeAnders Carlsson if (!InitExpr) { 1495cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman // This is a tentative definition; tentative definitions are 149603f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // implicitly initialized with { 0 }. 149703f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // 149803f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // Note that tentative definitions are only emitted at the end of 149903f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // a translation unit, so they should never have incomplete 150003f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // type. In addition, EmitTentativeDefinition makes sure that we 150103f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // never attempt to emit a tentative definition if a real one 150203f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // exists. A use may still exists, however, so we still may need 150303f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // to do a RAUW. 150403f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar assert(!ASTTy->isIncompleteType() && "Unexpected incomplete type"); 1505b0d0ea042116c1f451d3db8ceff9f1dd92bc36d2Anders Carlsson Init = EmitNullConstant(D->getType()); 150677ba708819285931932ecd33691a672bb59d221aEli Friedman } else { 150719b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // If this is a std::initializer_list, emit the special initializer. 150819b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl Init = MaybeEmitGlobalStdInitializerListInitializer(D, InitExpr); 150919b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // An empty init list will perform zero-initialization, which happens 151019b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // to be exactly what we want. 151119b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // FIXME: It does so in a global constructor, which is *not* what we 151219b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // want. 151319b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 151419b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl if (!Init) 151519b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl Init = EmitConstantInit(*InitDecl); 15166e656f45ae04b415ba7a4c0c25e55633e2d0ecd0Eli Friedman if (!Init) { 15173bb92693c3332c1e99870a4e45afff3892e1c6aeAnders Carlsson QualType T = InitExpr->getType(); 1518c446d1816f46a4b6d2337102dfc001f55fc18211Douglas Gregor if (D->getType()->isReferenceType()) 1519c446d1816f46a4b6d2337102dfc001f55fc18211Douglas Gregor T = D->getType(); 15202d6a5670465cb3f1d811695a9f23e372508240d2Richard Smith 15214e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().CPlusPlus) { 152289ed31d3f9eeb8ec77c284a5cf404a74bf5e7acfAnders Carlsson Init = EmitNullConstant(T); 15237ca4850a3e3530fa6c93b64b740446e32c97f992Richard Smith NeedsGlobalCtor = true; 152489ed31d3f9eeb8ec77c284a5cf404a74bf5e7acfAnders Carlsson } else { 152589ed31d3f9eeb8ec77c284a5cf404a74bf5e7acfAnders Carlsson ErrorUnsupported(D, "static initializer"); 152689ed31d3f9eeb8ec77c284a5cf404a74bf5e7acfAnders Carlsson Init = llvm::UndefValue::get(getTypes().ConvertType(T)); 152789ed31d3f9eeb8ec77c284a5cf404a74bf5e7acfAnders Carlsson } 1528bf40cb518312dde1c07e44fcae59bc4eec65589cJohn McCall } else { 1529bf40cb518312dde1c07e44fcae59bc4eec65589cJohn McCall // We don't need an initializer, so remove the entry for the delayed 15307ca4850a3e3530fa6c93b64b740446e32c97f992Richard Smith // initializer position (just in case this entry was delayed) if we 15317ca4850a3e3530fa6c93b64b740446e32c97f992Richard Smith // also don't need to register a destructor. 15324e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().CPlusPlus && !NeedsGlobalDtor) 1533bf40cb518312dde1c07e44fcae59bc4eec65589cJohn McCall DelayedCXXInitPosition.erase(D); 15346e656f45ae04b415ba7a4c0c25e55633e2d0ecd0Eli Friedman } 15358f32f7189b12f67aa4a19bc7c3855b599980eca0Chris Lattner } 15368e53e720b3d7c962e91138a130dbd5d6c2def0e5Devang Patel 15372acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type* InitType = Init->getType(); 1538570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner llvm::Constant *Entry = GetAddrOfGlobalVar(D, InitType); 15391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1540570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // Strip off a bitcast if we got one back. 1541570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner if (llvm::ConstantExpr *CE = dyn_cast<llvm::ConstantExpr>(Entry)) { 15429d4a15fd3b85434c43ea27562793de63a793321aChris Lattner assert(CE->getOpcode() == llvm::Instruction::BitCast || 15439d4a15fd3b85434c43ea27562793de63a793321aChris Lattner // all zero index gep. 15449d4a15fd3b85434c43ea27562793de63a793321aChris Lattner CE->getOpcode() == llvm::Instruction::GetElementPtr); 1545570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner Entry = CE->getOperand(0); 1546570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner } 15471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1548570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // Entry is now either a Function or GlobalVariable. 1549570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner llvm::GlobalVariable *GV = dyn_cast<llvm::GlobalVariable>(Entry); 15501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1551570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // We have a definition after a declaration with the wrong type. 1552570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // We must make a new GlobalVariable* and update everything that used OldGV 1553570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // (a declaration or tentative definition) with the new GlobalVariable* 1554570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // (which will be a definition). 1555570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // 1556570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // This happens if there is a prototype for a global (e.g. 1557570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // "extern int x[];") and then a definition of a different type (e.g. 1558570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // "int x[10];"). This also happens when an initializer has a different type 1559570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // from the type of the global (this happens with unions). 1560570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner if (GV == 0 || 1561570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner GV->getType()->getElementType() != InitType || 1562207f4d8543529221932af82836016a2ef066c917Peter Collingbourne GV->getType()->getAddressSpace() != 1563207f4d8543529221932af82836016a2ef066c917Peter Collingbourne getContext().getTargetAddressSpace(ASTTy)) { 15641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1565f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall // Move the old entry aside so that we'll create a new one. 15665f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner Entry->setName(StringRef()); 1567232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar 1568570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // Make a new global with the correct type, this is now guaranteed to work. 1569570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner GV = cast<llvm::GlobalVariable>(GetAddrOfGlobalVar(D, InitType)); 15700558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner 157177ba708819285931932ecd33691a672bb59d221aEli Friedman // Replace all uses of the old global with the new global 15721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Constant *NewPtrForOldDecl = 15733c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(GV, Entry->getType()); 1574570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner Entry->replaceAllUsesWith(NewPtrForOldDecl); 157577ba708819285931932ecd33691a672bb59d221aEli Friedman 157677ba708819285931932ecd33691a672bb59d221aEli Friedman // Erase the old global, since it is no longer used. 1577570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner cast<llvm::GlobalValue>(Entry)->eraseFromParent(); 157877ba708819285931932ecd33691a672bb59d221aEli Friedman } 157977ba708819285931932ecd33691a672bb59d221aEli Friedman 158077f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge if (D->hasAttr<AnnotateAttr>()) 158177f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge AddGlobalAnnotations(D, GV); 15828bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman 158388a69ad80e1550e9932666e6efa050a5b1223889Chris Lattner GV->setInitializer(Init); 1584e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner 1585e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner // If it is safe to mark the global 'constant', do so now. 1586a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith GV->setConstant(!NeedsGlobalCtor && !NeedsGlobalDtor && 1587a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith isTypeConstant(D->getType(), true)); 15881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15898b752f10c394b140f9ef89e049cbad1a7676fc25Ken Dyck GV->setAlignment(getContext().getDeclAlign(D).getQuantity()); 1590a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith 159188a69ad80e1550e9932666e6efa050a5b1223889Chris Lattner // Set the llvm linkage type as appropriate. 1592354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian llvm::GlobalValue::LinkageTypes Linkage = 1593354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian GetLLVMLinkageVarDefinition(D, GV); 1594354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian GV->setLinkage(Linkage); 1595354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian if (Linkage == llvm::GlobalVariable::CommonLinkage) 1596354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian // common vars aren't constant even if declared const. 1597354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian GV->setConstant(false); 1598354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian 1599354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian SetCommonAttributes(D, GV); 1600354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian 16013030eb82593097502469a8b3fc26112c79c75605John McCall // Emit the initializer function if necessary. 16027ca4850a3e3530fa6c93b64b740446e32c97f992Richard Smith if (NeedsGlobalCtor || NeedsGlobalDtor) 16037ca4850a3e3530fa6c93b64b740446e32c97f992Richard Smith EmitCXXGlobalVarDeclInitFunc(D, GV, NeedsGlobalCtor); 16043030eb82593097502469a8b3fc26112c79c75605John McCall 1605354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian // Emit global variable debug information. 160673fb35003aad027492e661a3749e921b5d1ecaf9Eric Christopher if (CGDebugInfo *DI = getModuleDebugInfo()) 1607354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian DI->EmitGlobalVariable(GV, D); 1608354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian} 1609354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian 1610354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanianllvm::GlobalValue::LinkageTypes 1611354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz JahanianCodeGenModule::GetLLVMLinkageVarDefinition(const VarDecl *D, 1612354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian llvm::GlobalVariable *GV) { 161390e99a84ddd020e8fda79643748243725a2ed071Argyrios Kyrtzidis GVALinkage Linkage = getContext().GetGVALinkageForVariable(D); 1614a0f00a71fcb0f98298709d5e5318339acf7958acDouglas Gregor if (Linkage == GVA_Internal) 1615354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian return llvm::Function::InternalLinkage; 161640b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis else if (D->hasAttr<DLLImportAttr>()) 1617354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian return llvm::Function::DLLImportLinkage; 161840b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis else if (D->hasAttr<DLLExportAttr>()) 1619354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian return llvm::Function::DLLExportLinkage; 1620e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner else if (D->hasAttr<WeakAttr>()) { 1621e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner if (GV->isConstant()) 1622354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian return llvm::GlobalVariable::WeakODRLinkage; 1623e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner else 1624354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian return llvm::GlobalVariable::WeakAnyLinkage; 16258f51a4f2d00b0abda3cde7f3828fb2e2b9beafb5Douglas Gregor } else if (Linkage == GVA_TemplateInstantiation || 16268f51a4f2d00b0abda3cde7f3828fb2e2b9beafb5Douglas Gregor Linkage == GVA_ExplicitTemplateInstantiation) 162799ace16bc6962f1fc3dc45bbbdf2eb74e555a8adJohn McCall return llvm::GlobalVariable::WeakODRLinkage; 16284e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie else if (!getLangOpts().CPlusPlus && 1629a6cf1e709b96865210b81bd611d41e9a2d41500aEric Christopher ((!CodeGenOpts.NoCommon && !D->getAttr<NoCommonAttr>()) || 1630a6cf1e709b96865210b81bd611d41e9a2d41500aEric Christopher D->getAttr<CommonAttr>()) && 1631309457d0f1b416c1b379c9f3e172848adffedb23Chris Lattner !D->hasExternalStorage() && !D->getInit() && 1632ab27d6ea7b4ce2762a16905281de796db32bb6f2Fariborz Jahanian !D->getAttr<SectionAttr>() && !D->isThreadSpecified() && 1633ab27d6ea7b4ce2762a16905281de796db32bb6f2Fariborz Jahanian !D->getAttr<WeakImportAttr>()) { 163491f31dc234bbc98f3dd20e6741a7b0b98c7916bfEric Christopher // Thread local vars aren't considered common linkage. 1635354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian return llvm::GlobalVariable::CommonLinkage; 1636686226b538e72c5059ab7c9a8f87eb883193b645Sanjiv Gupta } 1637354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian return llvm::GlobalVariable::ExternalLinkage; 163888a69ad80e1550e9932666e6efa050a5b1223889Chris Lattner} 16395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1640bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// ReplaceUsesOfNonProtoTypeWithRealFunction - This function is called when we 1641bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// implement a function with no prototype, e.g. "int foo() {}". If there are 1642bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// existing call uses of the old function in the module, this adjusts them to 1643bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// call the new function directly. 1644bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// 1645bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// This is not just a cleanup: the always_inline pass requires direct calls to 1646bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// functions to be able to inline them. If there is a bitcast in the way, it 1647bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// won't inline them. Instcombine normally deletes these calls, but it isn't 1648bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// run at -O0. 1649bdb0132722082886558f31eccdba06ae1852c0eeChris Lattnerstatic void ReplaceUsesOfNonProtoTypeWithRealFunction(llvm::GlobalValue *Old, 1650bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner llvm::Function *NewFn) { 1651bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // If we're redefining a global as a function, don't transform it. 1652bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner llvm::Function *OldFn = dyn_cast<llvm::Function>(Old); 1653bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner if (OldFn == 0) return; 16541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16552acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *NewRetTy = NewFn->getReturnType(); 16565f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Value*, 4> ArgList; 1657bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner 1658bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner for (llvm::Value::use_iterator UI = OldFn->use_begin(), E = OldFn->use_end(); 1659dbf02bccc9fc1115cb7dd45c84df77252d68f220Benjamin Kramer UI != E; ) { 1660bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // TODO: Do invokes ever occur in C code? If so, we should handle them too. 1661dbf02bccc9fc1115cb7dd45c84df77252d68f220Benjamin Kramer llvm::Value::use_iterator I = UI++; // Increment before the CI is erased. 1662dbf02bccc9fc1115cb7dd45c84df77252d68f220Benjamin Kramer llvm::CallInst *CI = dyn_cast<llvm::CallInst>(*I); 16638670cd3ea4dfbf86caacd270ec2441e9949bbb6aGabor Greif if (!CI) continue; // FIXME: when we allow Invoke, just do CallSite CS(*I) 166435db3b9aad1829a1279b9e213ddee36395314a0bGabor Greif llvm::CallSite CS(CI); 1665dbf02bccc9fc1115cb7dd45c84df77252d68f220Benjamin Kramer if (!CI || !CS.isCallee(I)) continue; 16661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1667bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // If the return types don't match exactly, and if the call isn't dead, then 1668bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // we can't transform this call. 1669bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner if (CI->getType() != NewRetTy && !CI->use_empty()) 1670bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner continue; 1671bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner 167240f9c302f23a35611cd354f40b22b37f2c554a40John McCall // Get the attribute list. 167340f9c302f23a35611cd354f40b22b37f2c554a40John McCall llvm::SmallVector<llvm::AttributeWithIndex, 8> AttrVec; 167440f9c302f23a35611cd354f40b22b37f2c554a40John McCall llvm::AttrListPtr AttrList = CI->getAttributes(); 167540f9c302f23a35611cd354f40b22b37f2c554a40John McCall 167640f9c302f23a35611cd354f40b22b37f2c554a40John McCall // Get any return attributes. 167740f9c302f23a35611cd354f40b22b37f2c554a40John McCall llvm::Attributes RAttrs = AttrList.getRetAttributes(); 167840f9c302f23a35611cd354f40b22b37f2c554a40John McCall 167940f9c302f23a35611cd354f40b22b37f2c554a40John McCall // Add the return attributes. 168040f9c302f23a35611cd354f40b22b37f2c554a40John McCall if (RAttrs) 168140f9c302f23a35611cd354f40b22b37f2c554a40John McCall AttrVec.push_back(llvm::AttributeWithIndex::get(0, RAttrs)); 168240f9c302f23a35611cd354f40b22b37f2c554a40John McCall 1683bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // If the function was passed too few arguments, don't transform. If extra 1684bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // arguments were passed, we silently drop them. If any of the types 1685bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // mismatch, we don't transform. 1686bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner unsigned ArgNo = 0; 1687bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner bool DontTransform = false; 1688bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner for (llvm::Function::arg_iterator AI = NewFn->arg_begin(), 1689bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner E = NewFn->arg_end(); AI != E; ++AI, ++ArgNo) { 169035db3b9aad1829a1279b9e213ddee36395314a0bGabor Greif if (CS.arg_size() == ArgNo || 169135db3b9aad1829a1279b9e213ddee36395314a0bGabor Greif CS.getArgument(ArgNo)->getType() != AI->getType()) { 1692bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner DontTransform = true; 1693bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner break; 1694bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner } 169540f9c302f23a35611cd354f40b22b37f2c554a40John McCall 169640f9c302f23a35611cd354f40b22b37f2c554a40John McCall // Add any parameter attributes. 169740f9c302f23a35611cd354f40b22b37f2c554a40John McCall if (llvm::Attributes PAttrs = AttrList.getParamAttributes(ArgNo + 1)) 169840f9c302f23a35611cd354f40b22b37f2c554a40John McCall AttrVec.push_back(llvm::AttributeWithIndex::get(ArgNo + 1, PAttrs)); 1699bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner } 1700bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner if (DontTransform) 1701bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner continue; 17021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 170340f9c302f23a35611cd354f40b22b37f2c554a40John McCall if (llvm::Attributes FnAttrs = AttrList.getFnAttributes()) 170440f9c302f23a35611cd354f40b22b37f2c554a40John McCall AttrVec.push_back(llvm::AttributeWithIndex::get(~0, FnAttrs)); 170540f9c302f23a35611cd354f40b22b37f2c554a40John McCall 1706bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // Okay, we can transform this. Create the new call instruction and copy 1707bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // over the required information. 17086ba728d9687b2617793f5afd410650a8d6c71080Gabor Greif ArgList.append(CS.arg_begin(), CS.arg_begin() + ArgNo); 17094c7d9f1507d0f102bd4133bba63348636facd469Jay Foad llvm::CallInst *NewCall = llvm::CallInst::Create(NewFn, ArgList, "", CI); 1710bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner ArgList.clear(); 1711ffbb15e54a6dc120087003d1e42448b8705bd58aBenjamin Kramer if (!NewCall->getType()->isVoidTy()) 1712bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner NewCall->takeName(CI); 171340f9c302f23a35611cd354f40b22b37f2c554a40John McCall NewCall->setAttributes(llvm::AttrListPtr::get(AttrVec.begin(), 171440f9c302f23a35611cd354f40b22b37f2c554a40John McCall AttrVec.end())); 1715ca6408c3176783f0b29da4679a08512aa05f0c73Daniel Dunbar NewCall->setCallingConv(CI->getCallingConv()); 1716bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner 1717bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // Finally, remove the old call, replacing any uses with the new one. 171800549fcec0490b2daf27543e532f94adbb186063Chris Lattner if (!CI->use_empty()) 171900549fcec0490b2daf27543e532f94adbb186063Chris Lattner CI->replaceAllUsesWith(NewCall); 17203b122bc5f1203615e2128e0c1a63da438865b1ccDevang Patel 1721c60346388d60b1756f3675dabb60dc58da0728ecChris Lattner // Copy debug location attached to CI. 1722c60346388d60b1756f3675dabb60dc58da0728ecChris Lattner if (!CI->getDebugLoc().isUnknown()) 1723c60346388d60b1756f3675dabb60dc58da0728ecChris Lattner NewCall->setDebugLoc(CI->getDebugLoc()); 1724bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner CI->eraseFromParent(); 1725bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner } 1726bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner} 1727bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner 1728025039377d7247620750205dbd61ca1ba336f7e0Rafael Espindolavoid CodeGenModule::HandleCXXStaticMemberVarInstantiation(VarDecl *VD) { 1729025039377d7247620750205dbd61ca1ba336f7e0Rafael Espindola TemplateSpecializationKind TSK = VD->getTemplateSpecializationKind(); 1730025039377d7247620750205dbd61ca1ba336f7e0Rafael Espindola // If we have a definition, this might be a deferred decl. If the 1731025039377d7247620750205dbd61ca1ba336f7e0Rafael Espindola // instantiation is explicit, make sure we emit it at the end. 1732025039377d7247620750205dbd61ca1ba336f7e0Rafael Espindola if (VD->getDefinition() && TSK == TSK_ExplicitInstantiationDefinition) 1733025039377d7247620750205dbd61ca1ba336f7e0Rafael Espindola GetAddrOfGlobalVar(VD); 1734234fe654a3dd2888be42ae5db34db96c5c2c4ba3Rafael Espindola} 1735bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 1736b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattnervoid CodeGenModule::EmitGlobalFunctionDefinition(GlobalDecl GD) { 1737b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner const FunctionDecl *D = cast<FunctionDecl>(GD.getDecl()); 1738d26bc76c98006609002d9930f8840490e88ac5b5John McCall 17391f6f961293da9c2b1c23da2411c1b439a9502ed0John McCall // Compute the function info and LLVM type. 1740de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall const CGFunctionInfo &FI = getTypes().arrangeGlobalDeclaration(GD); 1741de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall llvm::FunctionType *Ty = getTypes().GetFunctionType(FI); 1742d26bc76c98006609002d9930f8840490e88ac5b5John McCall 17439fa959d5bfbbb17d7c6ba71252219201fc8dc971Chris Lattner // Get or create the prototype for the function. 1744b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner llvm::Constant *Entry = GetAddrOfFunction(GD, Ty); 17451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17460558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner // Strip off a bitcast if we got one back. 17470558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner if (llvm::ConstantExpr *CE = dyn_cast<llvm::ConstantExpr>(Entry)) { 17480558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner assert(CE->getOpcode() == llvm::Instruction::BitCast); 17490558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner Entry = CE->getOperand(0); 17500558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner } 17511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17530558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner if (cast<llvm::GlobalValue>(Entry)->getType()->getElementType() != Ty) { 1754bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner llvm::GlobalValue *OldFn = cast<llvm::GlobalValue>(Entry); 17551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 175642745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar // If the types mismatch then we have to rewrite the definition. 1757bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner assert(OldFn->isDeclaration() && 17580558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner "Shouldn't replace non-declaration"); 175934809507232bc4c3c4840c7d092c7440219fddafChris Lattner 176062b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // F is the Function* for the one with the wrong type, we must make a new 176162b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // Function* and update everything that used F (a declaration) with the new 176262b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // Function* (which will be a definition). 176362b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // 176462b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // This happens if there is a prototype for a function 176562b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // (e.g. "int f()") and then a definition of a different type 1766f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall // (e.g. "int f(int x)"). Move the old function aside so that it 1767f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall // doesn't interfere with GetAddrOfFunction. 17685f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner OldFn->setName(StringRef()); 1769b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner llvm::Function *NewFn = cast<llvm::Function>(GetAddrOfFunction(GD, Ty)); 17701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1771bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // If this is an implementation of a function without a prototype, try to 1772bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // replace any existing uses of the function (which may be calls) with uses 1773bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // of the new function 17749fa959d5bfbbb17d7c6ba71252219201fc8dc971Chris Lattner if (D->getType()->isFunctionNoProtoType()) { 1775bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner ReplaceUsesOfNonProtoTypeWithRealFunction(OldFn, NewFn); 17769fa959d5bfbbb17d7c6ba71252219201fc8dc971Chris Lattner OldFn->removeDeadConstantUsers(); 17779fa959d5bfbbb17d7c6ba71252219201fc8dc971Chris Lattner } 17781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 177962b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // Replace uses of F with the Function we will endow with a body. 1780bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner if (!Entry->use_empty()) { 17811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Constant *NewPtrForOldDecl = 17823c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(NewFn, Entry->getType()); 1783bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner Entry->replaceAllUsesWith(NewPtrForOldDecl); 1784bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner } 17851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 178662b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // Ok, delete the old function now, which is dead. 1787bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner OldFn->eraseFromParent(); 17881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17890558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner Entry = NewFn; 1790bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } 17911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1792112c967bd5c862a0f5d7913aa06700c048807db8John McCall // We need to set linkage and visibility on the function before 1793112c967bd5c862a0f5d7913aa06700c048807db8John McCall // generating code for it because various parts of IR generation 1794112c967bd5c862a0f5d7913aa06700c048807db8John McCall // want to propagate this information down (e.g. to local static 1795112c967bd5c862a0f5d7913aa06700c048807db8John McCall // declarations). 17960558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner llvm::Function *Fn = cast<llvm::Function>(Entry); 17978b2423361648c39a7d8a3c5e8129e12006deac32John McCall setFunctionLinkage(D, Fn); 1798bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 1799112c967bd5c862a0f5d7913aa06700c048807db8John McCall // FIXME: this is redundant with part of SetFunctionDefinitionAttributes 18000ffeaad72cb335b926b064379be4c9886bbff004Anders Carlsson setGlobalVisibility(Fn, D); 1801112c967bd5c862a0f5d7913aa06700c048807db8John McCall 1802d26bc76c98006609002d9930f8840490e88ac5b5John McCall CodeGenFunction(*this).GenerateCode(D, Fn, FI); 18036379a7a15335e0af543a942efe9cfd514a83dab8Daniel Dunbar 18047c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar SetFunctionDefinitionAttributes(D, Fn); 18057c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar SetLLVMFunctionAttributesForDefinition(D, Fn); 18061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 180740b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (const ConstructorAttr *CA = D->getAttr<ConstructorAttr>()) 1808219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar AddGlobalCtor(Fn, CA->getPriority()); 180940b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (const DestructorAttr *DA = D->getAttr<DestructorAttr>()) 1810219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar AddGlobalDtor(Fn, DA->getPriority()); 181177f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge if (D->hasAttr<AnnotateAttr>()) 181277f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge AddGlobalAnnotations(D, Fn); 1813bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar} 1814bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 1815f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCallvoid CodeGenModule::EmitAliasDefinition(GlobalDecl GD) { 1816f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall const ValueDecl *D = cast<ValueDecl>(GD.getDecl()); 181740b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis const AliasAttr *AA = D->getAttr<AliasAttr>(); 1818bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner assert(AA && "Not an alias?"); 1819bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 18205f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef MangledName = getMangledName(GD); 1821f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall 1822f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall // If there is a definition in the module, then it wins over the alias. 1823f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall // This is dubious, but allow it to be safe. Just ignore the alias. 1824f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall llvm::GlobalValue *Entry = GetGlobalValue(MangledName); 1825f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall if (Entry && !Entry->isDeclaration()) 1826f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall return; 18271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18282acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *DeclTy = getTypes().ConvertTypeForMem(D->getType()); 1829bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 1830bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // Create a reference to the named value. This ensures that it is emitted 1831bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // if a deferred decl. 1832bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner llvm::Constant *Aliasee; 1833bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner if (isa<llvm::FunctionType>(DeclTy)) 18341faa89f9c619e4b2411fab4af7e22ee7a2bd9009Anders Carlsson Aliasee = GetOrCreateLLVMFunction(AA->getAliasee(), DeclTy, GlobalDecl(), 18351faa89f9c619e4b2411fab4af7e22ee7a2bd9009Anders Carlsson /*ForVTable=*/false); 1836bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner else 1837f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall Aliasee = GetOrCreateLLVMGlobal(AA->getAliasee(), 183896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(DeclTy), 0); 1839bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 1840bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // Create the new alias itself, but don't set a name yet. 18411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalValue *GA = 1842bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner new llvm::GlobalAlias(Aliasee->getType(), 1843bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner llvm::Function::ExternalLinkage, 1844bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner "", Aliasee, &getModule()); 18451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1846bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner if (Entry) { 1847f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall assert(Entry->isDeclaration()); 1848f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall 1849bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // If there is a declaration in the module, then we had an extern followed 1850bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // by the alias, as in: 1851bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // extern int test6(); 1852bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // ... 1853bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // int test6() __attribute__((alias("test7"))); 1854bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // 1855bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // Remove it and replace uses of it with the alias. 1856f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall GA->takeName(Entry); 18571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18583c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Entry->replaceAllUsesWith(llvm::ConstantExpr::getBitCast(GA, 1859bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner Entry->getType())); 1860bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner Entry->eraseFromParent(); 1861f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall } else { 18629a20d55807cc2f6534a9c51a46cc8143ed16786dAnders Carlsson GA->setName(MangledName); 1863bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner } 18641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18657c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // Set attributes which are particular to an alias; this is a 18667c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // specialization of the attributes which may be set on a global 18677c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // variable/function. 186840b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (D->hasAttr<DLLExportAttr>()) { 18697c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 18707c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // The dllexport attribute is ignored for undefined symbols. 187106a54a38be5054c910ffc92db60edab23f9ea105Argyrios Kyrtzidis if (FD->hasBody()) 18727c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar GA->setLinkage(llvm::Function::DLLExportLinkage); 18737c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar } else { 18747c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar GA->setLinkage(llvm::Function::DLLExportLinkage); 18757c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar } 18761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } else if (D->hasAttr<WeakAttr>() || 187711e8ce7380856abee188b237c2600272df2ed09dRafael Espindola D->hasAttr<WeakRefAttr>() || 18780a0d2b179085a52c10402feebeb6db8b4d96a140Douglas Gregor D->isWeakImported()) { 18797c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar GA->setLinkage(llvm::Function::WeakAnyLinkage); 18807c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar } 18817c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 18827c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar SetCommonAttributes(D, GA); 1883bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner} 1884bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 18858dd55a3c3b28d195717c87bbc60e765951d408feBenjamin Kramerllvm::Function *CodeGenModule::getIntrinsic(unsigned IID, 18862d3ba4f5a923a90c3fc290ddfba5e36c2d0a9b46Chris Lattner ArrayRef<llvm::Type*> Tys) { 1887df983a8bcbbcea911b8dce283f044787df119d50Jay Foad return llvm::Intrinsic::getDeclaration(&getModule(), (llvm::Intrinsic::ID)IID, 18888dd55a3c3b28d195717c87bbc60e765951d408feBenjamin Kramer Tys); 18897acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattner} 1890bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 18911d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbarstatic llvm::StringMapEntry<llvm::Constant*> & 18921d5529132e4620562cab931c1f84c24e42f02741Daniel DunbarGetConstantCFStringEntry(llvm::StringMap<llvm::Constant*> &Map, 18931d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar const StringLiteral *Literal, 189470ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar bool TargetIsLSB, 18951d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar bool &IsUTF16, 18961d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar unsigned &StringLength) { 18975f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef String = Literal->getString(); 18982f4eaef37476ae6891ede8ba215d0f6fd093629bBenjamin Kramer unsigned NumBytes = String.size(); 18991d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar 1900f015b034159d40e7033309e50036804eb1971787Daniel Dunbar // Check for simple case. 1901f015b034159d40e7033309e50036804eb1971787Daniel Dunbar if (!Literal->containsNonAsciiOrNull()) { 1902f015b034159d40e7033309e50036804eb1971787Daniel Dunbar StringLength = NumBytes; 19032f4eaef37476ae6891ede8ba215d0f6fd093629bBenjamin Kramer return Map.GetOrCreateValue(String); 1904f015b034159d40e7033309e50036804eb1971787Daniel Dunbar } 1905f015b034159d40e7033309e50036804eb1971787Daniel Dunbar 190684392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling // Otherwise, convert the UTF8 literals into a string of shorts. 190784392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling IsUTF16 = true; 190884392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling 190984392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling SmallVector<UTF16, 128> ToBuf(NumBytes + 1); // +1 for ending nulls. 19102f4eaef37476ae6891ede8ba215d0f6fd093629bBenjamin Kramer const UTF8 *FromPtr = (UTF8 *)String.data(); 19111d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar UTF16 *ToPtr = &ToBuf[0]; 19121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1913e7ddfb974884ec75ffd66953b79511ea457493baFariborz Jahanian (void)ConvertUTF8toUTF16(&FromPtr, FromPtr + NumBytes, 1914e7ddfb974884ec75ffd66953b79511ea457493baFariborz Jahanian &ToPtr, ToPtr + NumBytes, 1915e7ddfb974884ec75ffd66953b79511ea457493baFariborz Jahanian strictConversion); 19161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 191770ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar // ConvertUTF8toUTF16 returns the length in ToPtr. 19181d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar StringLength = ToPtr - &ToBuf[0]; 191970ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar 192084392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling // Add an explicit null. 192184392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling *ToPtr = 0; 192284392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling return Map. 192384392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling GetOrCreateValue(StringRef(reinterpret_cast<const char *>(ToBuf.data()), 192484392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling (StringLength + 1) * 2)); 19251d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar} 19261d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar 1927cf8e168baf75b7ede6493d0373d64545c29c1a90Fariborz Jahanianstatic llvm::StringMapEntry<llvm::Constant*> & 1928cf8e168baf75b7ede6493d0373d64545c29c1a90Fariborz JahanianGetConstantStringEntry(llvm::StringMap<llvm::Constant*> &Map, 19298322c23956c4dea057a930753f23ff6467353e55Bill Wendling const StringLiteral *Literal, 19308322c23956c4dea057a930753f23ff6467353e55Bill Wendling unsigned &StringLength) { 19318322c23956c4dea057a930753f23ff6467353e55Bill Wendling StringRef String = Literal->getString(); 19328322c23956c4dea057a930753f23ff6467353e55Bill Wendling StringLength = String.size(); 19338322c23956c4dea057a930753f23ff6467353e55Bill Wendling return Map.GetOrCreateValue(String); 1934cf8e168baf75b7ede6493d0373d64545c29c1a90Fariborz Jahanian} 1935cf8e168baf75b7ede6493d0373d64545c29c1a90Fariborz Jahanian 19361d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbarllvm::Constant * 19371d5529132e4620562cab931c1f84c24e42f02741Daniel DunbarCodeGenModule::GetAddrOfConstantCFString(const StringLiteral *Literal) { 19381d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar unsigned StringLength = 0; 19391d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar bool isUTF16 = false; 19401d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar llvm::StringMapEntry<llvm::Constant*> &Entry = 19411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump GetConstantCFStringEntry(CFConstantStringMap, Literal, 194270ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar getTargetData().isLittleEndian(), 194370ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar isUTF16, StringLength); 19441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19451d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar if (llvm::Constant *C = Entry.getValue()) 19461d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar return C; 19471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19488b418685e9e4f02f4eb2a76e1ec063e07552b68dChris Lattner llvm::Constant *Zero = llvm::Constant::getNullValue(Int32Ty); 19493e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar llvm::Constant *Zeros[] = { Zero, Zero }; 19501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19519d4a15fd3b85434c43ea27562793de63a793321aChris Lattner // If we don't already have it, get __CFConstantStringClassReference. 1952c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson if (!CFConstantStringClassRef) { 19532acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *Ty = getTypes().ConvertType(getContext().IntTy); 195496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson Ty = llvm::ArrayType::get(Ty, 0); 19551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Constant *GV = CreateRuntimeVariable(Ty, 19569d4a15fd3b85434c43ea27562793de63a793321aChris Lattner "__CFConstantStringClassReference"); 19573e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar // Decay array -> ptr 19583e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar CFConstantStringClassRef = 1959a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad llvm::ConstantExpr::getGetElementPtr(GV, Zeros); 1960c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson } 19611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1962e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson QualType CFTy = getContext().getCFConstantStringType(); 19633e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar 19642acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::StructType *STy = 1965e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson cast<llvm::StructType>(getTypes().ConvertType(CFTy)); 1966e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson 19671d236ab930816f5da27bade92904914c44b73b4cBenjamin Kramer llvm::Constant *Fields[4]; 196844b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 1969c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // Class pointer. 19705add6835b0c6b0f67e19fd5366825d3e41eb0dcfAnders Carlsson Fields[0] = CFConstantStringClassRef; 19711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1972c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // Flags. 19732acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *Ty = getTypes().ConvertType(getContext().UnsignedIntTy); 19741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Fields[1] = isUTF16 ? llvm::ConstantInt::get(Ty, 0x07d0) : 19755add6835b0c6b0f67e19fd5366825d3e41eb0dcfAnders Carlsson llvm::ConstantInt::get(Ty, 0x07C8); 19765add6835b0c6b0f67e19fd5366825d3e41eb0dcfAnders Carlsson 1977c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // String pointer. 197884392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling llvm::Constant *C = 0; 197984392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling if (isUTF16) { 198084392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling ArrayRef<uint16_t> Arr = 198184392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling llvm::makeArrayRef<uint16_t>((uint16_t*)Entry.getKey().data(), 198284392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling Entry.getKey().size() / 2); 198384392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling C = llvm::ConstantDataArray::get(VMContext, Arr); 198484392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling } else { 198584392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling C = llvm::ConstantDataArray::getString(VMContext, Entry.getKey()); 198684392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling } 1987a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar 198895b851e55c328af4b69da7bfc1124bf258c0ffe5Chris Lattner llvm::GlobalValue::LinkageTypes Linkage; 19891bf7a3fcc4e2ad30688f7b0db464ad1ccabe77e2Bill Wendling if (isUTF16) 1990278b9f06933c385ffbccc15f8491787470cb4a1bChris Lattner // FIXME: why do utf strings get "_" labels instead of "L" labels? 199195b851e55c328af4b69da7bfc1124bf258c0ffe5Chris Lattner Linkage = llvm::GlobalValue::InternalLinkage; 19921bf7a3fcc4e2ad30688f7b0db464ad1ccabe77e2Bill Wendling else 1993584acf2ded2c18a18d6da0e1c01f5859a384d99fRafael Espindola // FIXME: With OS X ld 123.2 (xcode 4) and LTO we would get a linker error 1994584acf2ded2c18a18d6da0e1c01f5859a384d99fRafael Espindola // when using private linkage. It is not clear if this is a bug in ld 1995584acf2ded2c18a18d6da0e1c01f5859a384d99fRafael Espindola // or a reasonable new restriction. 1996dc0f137295bc7ec5b231ff1842388f149f43c0c8Rafael Espindola Linkage = llvm::GlobalValue::LinkerPrivateLinkage; 1997278b9f06933c385ffbccc15f8491787470cb4a1bChris Lattner 19981bf7a3fcc4e2ad30688f7b0db464ad1ccabe77e2Bill Wendling // Note: -fwritable-strings doesn't make the backing store strings of 19991bf7a3fcc4e2ad30688f7b0db464ad1ccabe77e2Bill Wendling // CFStrings writable. (See <rdar://problem/10657500>) 20001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalVariable *GV = 20011bf7a3fcc4e2ad30688f7b0db464ad1ccabe77e2Bill Wendling new llvm::GlobalVariable(getModule(), C->getType(), /*isConstant=*/true, 20021bf7a3fcc4e2ad30688f7b0db464ad1ccabe77e2Bill Wendling Linkage, C, ".str"); 2003b266a1fce09ab4ee7033268199509aacfbef056aRafael Espindola GV->setUnnamedAddr(true); 2004a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar if (isUTF16) { 20054da244c23d6093adbbbc41654aa5c5111b38f431Ken Dyck CharUnits Align = getContext().getTypeAlignInChars(getContext().ShortTy); 20064da244c23d6093adbbbc41654aa5c5111b38f431Ken Dyck GV->setAlignment(Align.getQuantity()); 2007f7e903d7a30891083420c07ebeed281726a101d6Daniel Dunbar } else { 2008f7e903d7a30891083420c07ebeed281726a101d6Daniel Dunbar CharUnits Align = getContext().getTypeAlignInChars(getContext().CharTy); 2009f7e903d7a30891083420c07ebeed281726a101d6Daniel Dunbar GV->setAlignment(Align.getQuantity()); 2010a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar } 201184392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling 201284392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling // String. 2013a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad Fields[2] = llvm::ConstantExpr::getGetElementPtr(GV, Zeros); 20145add6835b0c6b0f67e19fd5366825d3e41eb0dcfAnders Carlsson 201584392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling if (isUTF16) 201684392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling // Cast the UTF16 string to the correct type. 201784392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling Fields[2] = llvm::ConstantExpr::getBitCast(Fields[2], Int8PtrTy); 201884392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling 2019c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // String length. 2020c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson Ty = getTypes().ConvertType(getContext().LongTy); 20215add6835b0c6b0f67e19fd5366825d3e41eb0dcfAnders Carlsson Fields[3] = llvm::ConstantInt::get(Ty, StringLength); 20221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2023c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // The struct. 202408e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson C = llvm::ConstantStruct::get(STy, Fields); 20251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump GV = new llvm::GlobalVariable(getModule(), C->getType(), true, 20261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalVariable::PrivateLinkage, C, 202795b851e55c328af4b69da7bfc1124bf258c0ffe5Chris Lattner "_unnamed_cfstring_"); 2028bcfd1f55bfbb3e5944cd5e03d07b343e280838c4Douglas Gregor if (const char *Sect = getContext().getTargetInfo().getCFStringSection()) 20298e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar GV->setSection(Sect); 20301d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar Entry.setValue(GV); 20311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20320c67829763b98bc670062b553897a851fab17401Anders Carlsson return GV; 2033c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson} 203445e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 203545c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregorstatic RecordDecl * 203645c4ea75b235de94f44bf96843624e6a559e4c00Douglas GregorCreateRecordDecl(const ASTContext &Ctx, RecordDecl::TagKind TK, 203745c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor DeclContext *DC, IdentifierInfo *Id) { 203845c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor SourceLocation Loc; 20394e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (Ctx.getLangOpts().CPlusPlus) 204045c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor return CXXRecordDecl::Create(Ctx, TK, DC, Loc, Loc, Id); 204145c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor else 204245c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor return RecordDecl::Create(Ctx, TK, DC, Loc, Loc, Id); 204345c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor} 204445c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor 204533e982bf782d851bfe5767acb1336fcf3419ac6bFariborz Jahanianllvm::Constant * 20464c73307c74764ba99e1379677fe92af72f676531Fariborz JahanianCodeGenModule::GetAddrOfConstantString(const StringLiteral *Literal) { 20472bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian unsigned StringLength = 0; 20482bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian llvm::StringMapEntry<llvm::Constant*> &Entry = 2049cf8e168baf75b7ede6493d0373d64545c29c1a90Fariborz Jahanian GetConstantStringEntry(CFConstantStringMap, Literal, StringLength); 20502bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian 20512bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian if (llvm::Constant *C = Entry.getValue()) 20522bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian return C; 20532bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian 2054812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner llvm::Constant *Zero = llvm::Constant::getNullValue(Int32Ty); 20552bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian llvm::Constant *Zeros[] = { Zero, Zero }; 20562bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian 2057ec951e0c2fc0db00c36bc60c900331dde32c1b43Fariborz Jahanian // If we don't already have it, get _NSConstantStringClassReference. 20584c73307c74764ba99e1379677fe92af72f676531Fariborz Jahanian if (!ConstantStringClassRef) { 20594e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie std::string StringClass(getLangOpts().ObjCConstantStringClass); 20602acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *Ty = getTypes().ConvertType(getContext().IntTy); 20614c73307c74764ba99e1379677fe92af72f676531Fariborz Jahanian llvm::Constant *GV; 20624e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (LangOpts.ObjCNonFragileABI) { 206325dba5d294364fa8339091e4d9e6a8f5db008377Fariborz Jahanian std::string str = 206425dba5d294364fa8339091e4d9e6a8f5db008377Fariborz Jahanian StringClass.empty() ? "OBJC_CLASS_$_NSConstantString" 206525dba5d294364fa8339091e4d9e6a8f5db008377Fariborz Jahanian : "OBJC_CLASS_$_" + StringClass; 20666f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian GV = getObjCRuntime().GetClassGlobal(str); 20676f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian // Make sure the result is of the correct type. 20682acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *PTy = llvm::PointerType::getUnqual(Ty); 20696f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian ConstantStringClassRef = 20706f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian llvm::ConstantExpr::getBitCast(GV, PTy); 20716f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian } else { 207225dba5d294364fa8339091e4d9e6a8f5db008377Fariborz Jahanian std::string str = 207325dba5d294364fa8339091e4d9e6a8f5db008377Fariborz Jahanian StringClass.empty() ? "_NSConstantStringClassReference" 207425dba5d294364fa8339091e4d9e6a8f5db008377Fariborz Jahanian : "_" + StringClass + "ClassReference"; 20752acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *PTy = llvm::ArrayType::get(Ty, 0); 207625dba5d294364fa8339091e4d9e6a8f5db008377Fariborz Jahanian GV = CreateRuntimeVariable(PTy, str); 20776f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian // Decay array -> ptr 20786f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian ConstantStringClassRef = 2079a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad llvm::ConstantExpr::getGetElementPtr(GV, Zeros); 20804c73307c74764ba99e1379677fe92af72f676531Fariborz Jahanian } 20812bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian } 208245c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor 208345c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor if (!NSConstantStringType) { 208445c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor // Construct the type for a constant NSString. 208545c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor RecordDecl *D = CreateRecordDecl(Context, TTK_Struct, 208645c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor Context.getTranslationUnitDecl(), 208745c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor &Context.Idents.get("__builtin_NSString")); 208845c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor D->startDefinition(); 208945c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor 209045c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor QualType FieldTypes[3]; 209145c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor 209245c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor // const int *isa; 209345c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor FieldTypes[0] = Context.getPointerType(Context.IntTy.withConst()); 209445c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor // const char *str; 209545c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor FieldTypes[1] = Context.getPointerType(Context.CharTy.withConst()); 209645c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor // unsigned int length; 209745c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor FieldTypes[2] = Context.UnsignedIntTy; 209845c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor 209945c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor // Create fields 210045c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor for (unsigned i = 0; i < 3; ++i) { 210145c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor FieldDecl *Field = FieldDecl::Create(Context, D, 210245c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor SourceLocation(), 210345c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor SourceLocation(), 0, 210445c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor FieldTypes[i], /*TInfo=*/0, 210545c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor /*BitWidth=*/0, 210645c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor /*Mutable=*/false, 210745c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor /*HasInit=*/false); 210845c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor Field->setAccess(AS_public); 210945c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor D->addDecl(Field); 211045c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor } 211145c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor 211245c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor D->completeDefinition(); 211345c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor QualType NSTy = Context.getTagDeclType(D); 211445c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor NSConstantStringType = cast<llvm::StructType>(getTypes().ConvertType(NSTy)); 211545c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor } 21162bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian 21171d236ab930816f5da27bade92904914c44b73b4cBenjamin Kramer llvm::Constant *Fields[3]; 21182bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian 21192bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian // Class pointer. 21204c73307c74764ba99e1379677fe92af72f676531Fariborz Jahanian Fields[0] = ConstantStringClassRef; 21212bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian 21222bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian // String pointer. 212394010695f7fce626e41ef045b60def9c912e9ce8Chris Lattner llvm::Constant *C = 212494010695f7fce626e41ef045b60def9c912e9ce8Chris Lattner llvm::ConstantDataArray::getString(VMContext, Entry.getKey()); 21252bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian 21262bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian llvm::GlobalValue::LinkageTypes Linkage; 21272bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian bool isConstant; 2128cf8e168baf75b7ede6493d0373d64545c29c1a90Fariborz Jahanian Linkage = llvm::GlobalValue::PrivateLinkage; 21294e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie isConstant = !LangOpts.WritableStrings; 21302bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian 21312bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian llvm::GlobalVariable *GV = 21322bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian new llvm::GlobalVariable(getModule(), C->getType(), isConstant, Linkage, C, 21332bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian ".str"); 2134803d307a5385059b1a84dfe9706ab158c80a20dcRafael Espindola GV->setUnnamedAddr(true); 2135cf8e168baf75b7ede6493d0373d64545c29c1a90Fariborz Jahanian CharUnits Align = getContext().getTypeAlignInChars(getContext().CharTy); 2136cf8e168baf75b7ede6493d0373d64545c29c1a90Fariborz Jahanian GV->setAlignment(Align.getQuantity()); 2137a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad Fields[1] = llvm::ConstantExpr::getGetElementPtr(GV, Zeros); 21382bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian 21392bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian // String length. 21402acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *Ty = getTypes().ConvertType(getContext().UnsignedIntTy); 21412bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian Fields[2] = llvm::ConstantInt::get(Ty, StringLength); 21422bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian 21432bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian // The struct. 214445c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor C = llvm::ConstantStruct::get(NSConstantStringType, Fields); 21452bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian GV = new llvm::GlobalVariable(getModule(), C->getType(), true, 21462bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian llvm::GlobalVariable::PrivateLinkage, C, 21472bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian "_unnamed_nsstring_"); 21482bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian // FIXME. Fix section. 2149ec951e0c2fc0db00c36bc60c900331dde32c1b43Fariborz Jahanian if (const char *Sect = 21504e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie LangOpts.ObjCNonFragileABI 2151bcfd1f55bfbb3e5944cd5e03d07b343e280838c4Douglas Gregor ? getContext().getTargetInfo().getNSStringNonFragileABISection() 2152bcfd1f55bfbb3e5944cd5e03d07b343e280838c4Douglas Gregor : getContext().getTargetInfo().getNSStringSection()) 21532bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian GV->setSection(Sect); 21542bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian Entry.setValue(GV); 21552bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian 21562bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian return GV; 215733e982bf782d851bfe5767acb1336fcf3419ac6bFariborz Jahanian} 215833e982bf782d851bfe5767acb1336fcf3419ac6bFariborz Jahanian 21590815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas GregorQualType CodeGenModule::getObjCFastEnumerationStateType() { 21600815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor if (ObjCFastEnumerationStateType.isNull()) { 21610815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor RecordDecl *D = CreateRecordDecl(Context, TTK_Struct, 21620815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor Context.getTranslationUnitDecl(), 21630815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor &Context.Idents.get("__objcFastEnumerationState")); 21640815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor D->startDefinition(); 21650815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor 21660815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor QualType FieldTypes[] = { 21670815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor Context.UnsignedLongTy, 21680815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor Context.getPointerType(Context.getObjCIdType()), 21690815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor Context.getPointerType(Context.UnsignedLongTy), 21700815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor Context.getConstantArrayType(Context.UnsignedLongTy, 21710815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor llvm::APInt(32, 5), ArrayType::Normal, 0) 21720815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor }; 21730815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor 21740815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor for (size_t i = 0; i < 4; ++i) { 21750815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor FieldDecl *Field = FieldDecl::Create(Context, 21760815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor D, 21770815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor SourceLocation(), 21780815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor SourceLocation(), 0, 21790815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor FieldTypes[i], /*TInfo=*/0, 21800815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor /*BitWidth=*/0, 21810815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor /*Mutable=*/false, 21820815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor /*HasInit=*/false); 21830815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor Field->setAccess(AS_public); 21840815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor D->addDecl(Field); 21850815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor } 21860815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor 21870815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor D->completeDefinition(); 21880815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor ObjCFastEnumerationStateType = Context.getTagDeclType(D); 21890815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor } 21900815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor 21910815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor return ObjCFastEnumerationStateType; 21920815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor} 21930815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor 219464f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedmanllvm::Constant * 219564f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli FriedmanCodeGenModule::GetConstantArrayFromStringLiteral(const StringLiteral *E) { 219664f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman assert(!E->getType()->isPointerType() && "Strings are always arrays"); 219764f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman 219864f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman // Don't emit it as the address of the string, emit the string data itself 219964f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman // as an inline array. 2200812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner if (E->getCharByteWidth() == 1) { 2201812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner SmallString<64> Str(E->getString()); 2202812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner 2203812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner // Resize the string to the right size, which is indicated by its type. 2204812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner const ConstantArrayType *CAT = Context.getAsConstantArrayType(E->getType()); 2205812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner Str.resize(CAT->getSize().getZExtValue()); 2206812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner return llvm::ConstantDataArray::getString(VMContext, Str, false); 2207812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner } 220894010695f7fce626e41ef045b60def9c912e9ce8Chris Lattner 220994010695f7fce626e41ef045b60def9c912e9ce8Chris Lattner llvm::ArrayType *AType = 221094010695f7fce626e41ef045b60def9c912e9ce8Chris Lattner cast<llvm::ArrayType>(getTypes().ConvertType(E->getType())); 221194010695f7fce626e41ef045b60def9c912e9ce8Chris Lattner llvm::Type *ElemTy = AType->getElementType(); 221294010695f7fce626e41ef045b60def9c912e9ce8Chris Lattner unsigned NumElements = AType->getNumElements(); 2213d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner 2214d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner // Wide strings have either 2-byte or 4-byte elements. 2215d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner if (ElemTy->getPrimitiveSizeInBits() == 16) { 2216d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner SmallVector<uint16_t, 32> Elements; 2217d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner Elements.reserve(NumElements); 2218d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner 2219d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner for(unsigned i = 0, e = E->getLength(); i != e; ++i) 2220d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner Elements.push_back(E->getCodeUnit(i)); 2221d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner Elements.resize(NumElements); 2222d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner return llvm::ConstantDataArray::get(VMContext, Elements); 222394010695f7fce626e41ef045b60def9c912e9ce8Chris Lattner } 222494010695f7fce626e41ef045b60def9c912e9ce8Chris Lattner 2225d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner assert(ElemTy->getPrimitiveSizeInBits() == 32); 2226d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner SmallVector<uint32_t, 32> Elements; 2227d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner Elements.reserve(NumElements); 2228d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner 2229d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner for(unsigned i = 0, e = E->getLength(); i != e; ++i) 2230d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner Elements.push_back(E->getCodeUnit(i)); 2231d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner Elements.resize(NumElements); 2232d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner return llvm::ConstantDataArray::get(VMContext, Elements); 223364f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman} 223464f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman 22356143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// GetAddrOfConstantStringFromLiteral - Return a pointer to a 22366143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// constant array for the given string literal. 22376143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbarllvm::Constant * 22386143293fa4366ee95d7e47e61bd030a34bf68b55Daniel DunbarCodeGenModule::GetAddrOfConstantStringFromLiteral(const StringLiteral *S) { 2239a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall CharUnits Align = getContext().getTypeAlignInChars(S->getType()); 224064f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman if (S->isAscii() || S->isUTF8()) { 2241812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner SmallString<64> Str(S->getString()); 2242812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner 2243812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner // Resize the string to the right size, which is indicated by its type. 2244812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner const ConstantArrayType *CAT = Context.getAsConstantArrayType(S->getType()); 2245812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner Str.resize(CAT->getSize().getZExtValue()); 2246812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner return GetAddrOfConstantString(Str, /*GlobalName*/ 0, Align.getQuantity()); 22477eb79c1010c8d30b852768bec96e81cd3e6def2eEli Friedman } 224864f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman 2249812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner // FIXME: the following does not memoize wide strings. 225064f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman llvm::Constant *C = GetConstantArrayFromStringLiteral(S); 225164f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman llvm::GlobalVariable *GV = 225264f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman new llvm::GlobalVariable(getModule(),C->getType(), 22534e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie !LangOpts.WritableStrings, 225464f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman llvm::GlobalValue::PrivateLinkage, 225564f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman C,".str"); 22567d6a7c004361c45a463874a58da28d9f3c35f2e6Seth Cantrell 225764f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman GV->setAlignment(Align.getQuantity()); 225864f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman GV->setUnnamedAddr(true); 225964f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman return GV; 22606143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar} 22616143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar 2262eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner/// GetAddrOfConstantStringFromObjCEncode - Return a pointer to a constant 2263eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner/// array for the given ObjCEncodeExpr node. 2264eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattnerllvm::Constant * 2265eaf2bb89eb2aad3b80673de30febe52df43c10ecChris LattnerCodeGenModule::GetAddrOfConstantStringFromObjCEncode(const ObjCEncodeExpr *E) { 2266eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner std::string Str; 2267eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner getContext().getObjCEncodingForType(E->getEncodedType(), Str); 2268a210f350fa78c263caa26e0f999cce85bb235309Eli Friedman 2269a210f350fa78c263caa26e0f999cce85bb235309Eli Friedman return GetAddrOfConstantCString(Str); 2270eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner} 2271eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner 2272eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner 2273a7ad98ff0919d6a24ea7c46634ea29bea551c1a0Chris Lattner/// GenerateWritableString -- Creates storage for a string literal. 2274a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCallstatic llvm::GlobalVariable *GenerateStringLiteral(StringRef str, 227545e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner bool constant, 22765fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar CodeGenModule &CGM, 2277a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall const char *GlobalName, 2278a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall unsigned Alignment) { 22796143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar // Create Constant for this string literal. Don't add a '\0'. 22800032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Constant *C = 228194010695f7fce626e41ef045b60def9c912e9ce8Chris Lattner llvm::ConstantDataArray::getString(CGM.getLLVMContext(), str, false); 22821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 228345e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner // Create a global variable for this string 22841257bc6ee76b931e3f8e51a88298b95379963d24Rafael Espindola llvm::GlobalVariable *GV = 22851257bc6ee76b931e3f8e51a88298b95379963d24Rafael Espindola new llvm::GlobalVariable(CGM.getModule(), C->getType(), constant, 22861257bc6ee76b931e3f8e51a88298b95379963d24Rafael Espindola llvm::GlobalValue::PrivateLinkage, 22871257bc6ee76b931e3f8e51a88298b95379963d24Rafael Espindola C, GlobalName); 2288a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall GV->setAlignment(Alignment); 22891257bc6ee76b931e3f8e51a88298b95379963d24Rafael Espindola GV->setUnnamedAddr(true); 22901257bc6ee76b931e3f8e51a88298b95379963d24Rafael Espindola return GV; 229145e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner} 229245e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 22936143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// GetAddrOfConstantString - Returns a pointer to a character array 22946143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// containing the literal. This contents are exactly that of the 22956143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// given string, i.e. it will not be null terminated automatically; 22966143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// see GetAddrOfConstantCString. Note that whether the result is 22976143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// actually a pointer to an LLVM constant depends on 22986143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// Feature.WriteableStrings. 22996143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// 23006143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// The result has pointer to array type. 23015f9e272e632e951b1efe824cd16acb4d96077930Chris Lattnerllvm::Constant *CodeGenModule::GetAddrOfConstantString(StringRef Str, 2302a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall const char *GlobalName, 2303a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall unsigned Alignment) { 23048e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar // Get the default prefix if a name wasn't specified. 23058e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar if (!GlobalName) 230695b851e55c328af4b69da7bfc1124bf258c0ffe5Chris Lattner GlobalName = ".str"; 23078e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar 23088e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar // Don't share any string literals if strings aren't constant. 23094e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (LangOpts.WritableStrings) 2310a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall return GenerateStringLiteral(Str, false, *this, GlobalName, Alignment); 23111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2312a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall llvm::StringMapEntry<llvm::GlobalVariable *> &Entry = 23139de4342ef79a18c706e46bc23f8f579f5add2375Benjamin Kramer ConstantStringMap.GetOrCreateValue(Str); 231445e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 2315a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall if (llvm::GlobalVariable *GV = Entry.getValue()) { 2316a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall if (Alignment > GV->getAlignment()) { 2317a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall GV->setAlignment(Alignment); 2318a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall } 2319a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall return GV; 2320a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall } 232145e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 232245e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner // Create a global variable for this. 2323812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner llvm::GlobalVariable *GV = GenerateStringLiteral(Str, true, *this, GlobalName, 2324812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner Alignment); 2325a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall Entry.setValue(GV); 2326a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall return GV; 232745e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner} 23286143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar 23296143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// GetAddrOfConstantCString - Returns a pointer to a character 23309de4342ef79a18c706e46bc23f8f579f5add2375Benjamin Kramer/// array containing the literal and a terminating '\0' 23316143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// character. The result has pointer to array type. 23329de4342ef79a18c706e46bc23f8f579f5add2375Benjamin Kramerllvm::Constant *CodeGenModule::GetAddrOfConstantCString(const std::string &Str, 2333a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall const char *GlobalName, 2334a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall unsigned Alignment) { 23355f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef StrWithNull(Str.c_str(), Str.size() + 1); 2336a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall return GetAddrOfConstantString(StrWithNull, GlobalName, Alignment); 23376143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar} 233841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 2339af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar/// EmitObjCPropertyImplementations - Emit information for synthesized 2340af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar/// properties for an implementation. 23411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpvoid CodeGenModule::EmitObjCPropertyImplementations(const 2342af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCImplementationDecl *D) { 23431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCImplementationDecl::propimpl_iterator 234417945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis i = D->propimpl_begin(), e = D->propimpl_end(); i != e; ++i) { 2345af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCPropertyImplDecl *PID = *i; 23461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2347af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // Dynamic is just for type-checking. 2348af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize) { 2349af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCPropertyDecl *PD = PID->getPropertyDecl(); 2350af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 2351af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // Determine which methods need to be implemented, some may have 2352af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // been overridden. Note that ::isSynthesized is not the method 2353af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // we want, that just indicates if the decl came from a 2354af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // property. What we want to know is if the method is defined in 2355af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // this implementation. 235617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis if (!D->getInstanceMethod(PD->getGetterName())) 2357fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian CodeGenFunction(*this).GenerateObjCGetter( 2358fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian const_cast<ObjCImplementationDecl *>(D), PID); 2359af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar if (!PD->isReadOnly() && 236017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis !D->getInstanceMethod(PD->getSetterName())) 2361fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian CodeGenFunction(*this).GenerateObjCSetter( 2362fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian const_cast<ObjCImplementationDecl *>(D), PID); 2363af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar } 2364af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar } 2365af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar} 2366af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 2367e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCallstatic bool needsDestructMethod(ObjCImplementationDecl *impl) { 2368db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose const ObjCInterfaceDecl *iface = impl->getClassInterface(); 2369db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose for (const ObjCIvarDecl *ivar = iface->all_declared_ivar_begin(); 2370e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall ivar; ivar = ivar->getNextIvar()) 2371e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall if (ivar->getType().isDestructedType()) 2372e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall return true; 2373e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall 2374e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall return false; 2375e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall} 2376e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall 2377109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian/// EmitObjCIvarInitializations - Emit information for ivar initialization 2378109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian/// for an implementation. 2379109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanianvoid CodeGenModule::EmitObjCIvarInitializations(ObjCImplementationDecl *D) { 2380e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall // We might need a .cxx_destruct even if we don't have any ivar initializers. 2381e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall if (needsDestructMethod(D)) { 2382e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall IdentifierInfo *II = &getContext().Idents.get(".cxx_destruct"); 2383e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall Selector cxxSelector = getContext().Selectors.getSelector(0, &II); 2384e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall ObjCMethodDecl *DTORMethod = 2385e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall ObjCMethodDecl::Create(getContext(), D->getLocation(), D->getLocation(), 238675cf3e86d33ce810c12084126385371b335c30baArgyrios Kyrtzidis cxxSelector, getContext().VoidTy, 0, D, 238775cf3e86d33ce810c12084126385371b335c30baArgyrios Kyrtzidis /*isInstance=*/true, /*isVariadic=*/false, 238875cf3e86d33ce810c12084126385371b335c30baArgyrios Kyrtzidis /*isSynthesized=*/true, /*isImplicitlyDeclared=*/true, 238975cf3e86d33ce810c12084126385371b335c30baArgyrios Kyrtzidis /*isDefined=*/false, ObjCMethodDecl::Required); 2390e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall D->addInstanceMethod(DTORMethod); 2391e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall CodeGenFunction(*this).GenerateObjCCtorDtorMethod(D, DTORMethod, false); 2392f85e193739c953358c865005855253af4f68a497John McCall D->setHasCXXStructors(true); 2393e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall } 2394e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall 2395e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall // If the implementation doesn't have any ivar initializers, we don't need 2396e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall // a .cxx_construct. 2397827bbcc8a9115782693b21030a45378abe5c1862David Chisnall if (D->getNumIvarInitializers() == 0) 2398109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian return; 2399109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian 2400e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall IdentifierInfo *II = &getContext().Idents.get(".cxx_construct"); 2401e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall Selector cxxSelector = getContext().Selectors.getSelector(0, &II); 2402109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian // The constructor returns 'self'. 2403109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian ObjCMethodDecl *CTORMethod = ObjCMethodDecl::Create(getContext(), 2404109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian D->getLocation(), 240511d77169555480ee0a04c6e5bc390d8fde41175dArgyrios Kyrtzidis D->getLocation(), 240611d77169555480ee0a04c6e5bc390d8fde41175dArgyrios Kyrtzidis cxxSelector, 2407109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian getContext().getObjCIdType(), 0, 240875cf3e86d33ce810c12084126385371b335c30baArgyrios Kyrtzidis D, /*isInstance=*/true, 240975cf3e86d33ce810c12084126385371b335c30baArgyrios Kyrtzidis /*isVariadic=*/false, 241075cf3e86d33ce810c12084126385371b335c30baArgyrios Kyrtzidis /*isSynthesized=*/true, 241175cf3e86d33ce810c12084126385371b335c30baArgyrios Kyrtzidis /*isImplicitlyDeclared=*/true, 241275cf3e86d33ce810c12084126385371b335c30baArgyrios Kyrtzidis /*isDefined=*/false, 2413109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian ObjCMethodDecl::Required); 2414109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian D->addInstanceMethod(CTORMethod); 2415109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian CodeGenFunction(*this).GenerateObjCCtorDtorMethod(D, CTORMethod, true); 2416f85e193739c953358c865005855253af4f68a497John McCall D->setHasCXXStructors(true); 2417109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian} 2418109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian 241991e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson/// EmitNamespace - Emit all declarations in a namespace. 2420984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlssonvoid CodeGenModule::EmitNamespace(const NamespaceDecl *ND) { 242117945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (RecordDecl::decl_iterator I = ND->decls_begin(), E = ND->decls_end(); 2422984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlsson I != E; ++I) 2423984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlsson EmitTopLevelDecl(*I); 2424984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlsson} 2425984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlsson 242691e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson// EmitLinkageSpec - Emit all declarations in a linkage spec. 242791e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlssonvoid CodeGenModule::EmitLinkageSpec(const LinkageSpecDecl *LSD) { 2428f976be8a63f9e0d3bd50e33dadef02c3c9921747Eli Friedman if (LSD->getLanguage() != LinkageSpecDecl::lang_c && 2429f976be8a63f9e0d3bd50e33dadef02c3c9921747Eli Friedman LSD->getLanguage() != LinkageSpecDecl::lang_cxx) { 243091e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson ErrorUnsupported(LSD, "linkage spec"); 243191e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson return; 243291e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson } 243391e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson 243417945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (RecordDecl::decl_iterator I = LSD->decls_begin(), E = LSD->decls_end(); 243591e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson I != E; ++I) 243691e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson EmitTopLevelDecl(*I); 243791e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson} 243891e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson 243941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar/// EmitTopLevelDecl - Emit code for a single top level declaration. 244041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbarvoid CodeGenModule::EmitTopLevelDecl(Decl *D) { 244141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // If an error has occurred, stop code generation, but continue 244241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // parsing and semantic analysis (to ensure all warnings and errors 244341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // are emitted). 244441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar if (Diags.hasErrorOccurred()) 244541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar return; 244641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 244716e8be2ac532358d4e413fdfa2643b1876edda78Douglas Gregor // Ignore dependent declarations. 244816e8be2ac532358d4e413fdfa2643b1876edda78Douglas Gregor if (D->getDeclContext() && D->getDeclContext()->isDependentContext()) 244916e8be2ac532358d4e413fdfa2643b1876edda78Douglas Gregor return; 24501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 245141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar switch (D->getKind()) { 2452293361afd4199c92aabff9267fddea890943c586Anders Carlsson case Decl::CXXConversion: 24532b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson case Decl::CXXMethod: 245441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::Function: 245516e8be2ac532358d4e413fdfa2643b1876edda78Douglas Gregor // Skip function templates 24568387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet if (cast<FunctionDecl>(D)->getDescribedFunctionTemplate() || 24578387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet cast<FunctionDecl>(D)->isLateTemplateParsed()) 245816e8be2ac532358d4e413fdfa2643b1876edda78Douglas Gregor return; 24591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2460555b4bb2749aea2ec8e2adc351a71ec1cb9bdc33Anders Carlsson EmitGlobal(cast<FunctionDecl>(D)); 2461555b4bb2749aea2ec8e2adc351a71ec1cb9bdc33Anders Carlsson break; 2462555b4bb2749aea2ec8e2adc351a71ec1cb9bdc33Anders Carlsson 246341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::Var: 2464555b4bb2749aea2ec8e2adc351a71ec1cb9bdc33Anders Carlsson EmitGlobal(cast<VarDecl>(D)); 246541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 246641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 246726fbc72b33bdbd20b0145bf117c64d373f8051e3John McCall // Indirect fields from global anonymous structs and unions can be 246826fbc72b33bdbd20b0145bf117c64d373f8051e3John McCall // ignored; only the actual variable requires IR gen support. 246926fbc72b33bdbd20b0145bf117c64d373f8051e3John McCall case Decl::IndirectField: 247026fbc72b33bdbd20b0145bf117c64d373f8051e3John McCall break; 247126fbc72b33bdbd20b0145bf117c64d373f8051e3John McCall 247295d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson // C++ Decls 247341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::Namespace: 2474984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlsson EmitNamespace(cast<NamespaceDecl>(D)); 247541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 24769cfbe48a7a20a217fdb2920b29b67ae7941cb116Douglas Gregor // No code generation needed. 24779d0c6613ec040ad8d952556be909232a7f25dedeJohn McCall case Decl::UsingShadow: 24789cfbe48a7a20a217fdb2920b29b67ae7941cb116Douglas Gregor case Decl::Using: 2479dd9967a6374c9a44be4af02aaeee340ffb82848fDouglas Gregor case Decl::UsingDirective: 2480127102b5196ffe04bdb70fd553fe62c265ab10a9Douglas Gregor case Decl::ClassTemplate: 2481127102b5196ffe04bdb70fd553fe62c265ab10a9Douglas Gregor case Decl::FunctionTemplate: 24823e4c6c4c79a03f5cb0c4671d7c282d623c6dc35eRichard Smith case Decl::TypeAliasTemplate: 2483018837b081bd1a725bae1c020eb1649975b04d67Anders Carlsson case Decl::NamespaceAlias: 24846a576ab708d3aa7d40e5d867ab1de5d3cb507553Douglas Gregor case Decl::Block: 248515de72cf580840c61e5704c2f8a2b56f9d0638e1Douglas Gregor case Decl::Import: 24869cfbe48a7a20a217fdb2920b29b67ae7941cb116Douglas Gregor break; 248795d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson case Decl::CXXConstructor: 24881fe598c026dc03fddbd65efb8119eb1afd9b1520Anders Carlsson // Skip function templates 24898387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet if (cast<FunctionDecl>(D)->getDescribedFunctionTemplate() || 24908387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet cast<FunctionDecl>(D)->isLateTemplateParsed()) 24911fe598c026dc03fddbd65efb8119eb1afd9b1520Anders Carlsson return; 24921fe598c026dc03fddbd65efb8119eb1afd9b1520Anders Carlsson 249395d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson EmitCXXConstructors(cast<CXXConstructorDecl>(D)); 249495d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson break; 249527ae53665f8b00fe4ba21da0fa79a4ce6e0b6cd5Anders Carlsson case Decl::CXXDestructor: 24968387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet if (cast<FunctionDecl>(D)->isLateTemplateParsed()) 24978387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet return; 249827ae53665f8b00fe4ba21da0fa79a4ce6e0b6cd5Anders Carlsson EmitCXXDestructors(cast<CXXDestructorDecl>(D)); 249927ae53665f8b00fe4ba21da0fa79a4ce6e0b6cd5Anders Carlsson break; 250036674d2978eb53962218ac67bb4d352cc287ea05Anders Carlsson 250136674d2978eb53962218ac67bb4d352cc287ea05Anders Carlsson case Decl::StaticAssert: 250236674d2978eb53962218ac67bb4d352cc287ea05Anders Carlsson // Nothing to do. 250336674d2978eb53962218ac67bb4d352cc287ea05Anders Carlsson break; 250436674d2978eb53962218ac67bb4d352cc287ea05Anders Carlsson 250595d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson // Objective-C Decls 25061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 250738e24c782c17b6058bf61d635747bbde19fb1bc7Fariborz Jahanian // Forward declarations, no (immediate) code generation. 2508b31cb7f1752ea011fd06ac9574ce24667d11cbdbFariborz Jahanian case Decl::ObjCInterface: 250941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 2510000835d0b04345c0014c603fe6339b3bc154050eFariborz Jahanian 2511baf101d1f96b4e41c9f2797875329840514f54f1Chris Lattner case Decl::ObjCCategory: { 2512baf101d1f96b4e41c9f2797875329840514f54f1Chris Lattner ObjCCategoryDecl *CD = cast<ObjCCategoryDecl>(D); 2513baf101d1f96b4e41c9f2797875329840514f54f1Chris Lattner if (CD->IsClassExtension() && CD->hasSynthBitfield()) 2514baf101d1f96b4e41c9f2797875329840514f54f1Chris Lattner Context.ResetObjCLayout(CD->getClassInterface()); 2515baf101d1f96b4e41c9f2797875329840514f54f1Chris Lattner break; 2516baf101d1f96b4e41c9f2797875329840514f54f1Chris Lattner } 2517285d0dba947b7c9960eaa88e8c4fced0398d4319Chris Lattner 2518bd9482d859a74bf2c45ef8b8aedec61c0e1c8374Douglas Gregor case Decl::ObjCProtocol: { 2519bd9482d859a74bf2c45ef8b8aedec61c0e1c8374Douglas Gregor ObjCProtocolDecl *Proto = cast<ObjCProtocolDecl>(D); 2520bd9482d859a74bf2c45ef8b8aedec61c0e1c8374Douglas Gregor if (Proto->isThisDeclarationADefinition()) 2521bd9482d859a74bf2c45ef8b8aedec61c0e1c8374Douglas Gregor ObjCRuntime->GenerateProtocol(Proto); 252241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 2523bd9482d859a74bf2c45ef8b8aedec61c0e1c8374Douglas Gregor } 2524bd9482d859a74bf2c45ef8b8aedec61c0e1c8374Douglas Gregor 252541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCCategoryImpl: 2526af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // Categories have properties but don't support synthesize so we 2527af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // can ignore them here. 2528e926523105dd2604ccd5c101605dea43c5269965Peter Collingbourne ObjCRuntime->GenerateCategory(cast<ObjCCategoryImplDecl>(D)); 252941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 253041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 2531af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar case Decl::ObjCImplementation: { 2532af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCImplementationDecl *OMD = cast<ObjCImplementationDecl>(D); 25334e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (LangOpts.ObjCNonFragileABI2 && OMD->hasSynthBitfield()) 2534000835d0b04345c0014c603fe6339b3bc154050eFariborz Jahanian Context.ResetObjCLayout(OMD->getClassInterface()); 2535af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar EmitObjCPropertyImplementations(OMD); 2536109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian EmitObjCIvarInitializations(OMD); 2537e926523105dd2604ccd5c101605dea43c5269965Peter Collingbourne ObjCRuntime->GenerateClass(OMD); 2538be6c6869a993536d4cd007f04e84ef74a1c3b229Eric Christopher // Emit global variable debug information. 2539be6c6869a993536d4cd007f04e84ef74a1c3b229Eric Christopher if (CGDebugInfo *DI = getModuleDebugInfo()) 2540be6c6869a993536d4cd007f04e84ef74a1c3b229Eric Christopher DI->getOrCreateInterfaceType(getContext().getObjCInterfaceType(OMD->getClassInterface()), 2541be6c6869a993536d4cd007f04e84ef74a1c3b229Eric Christopher OMD->getLocation()); 2542be6c6869a993536d4cd007f04e84ef74a1c3b229Eric Christopher 254341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 25441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 254541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCMethod: { 254641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar ObjCMethodDecl *OMD = cast<ObjCMethodDecl>(D); 254741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // If this is not a prototype, emit the body. 25486fb0aee4f9dc261bbec72e1283ad8dc0557a6d96Argyrios Kyrtzidis if (OMD->getBody()) 254941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar CodeGenFunction(*this).GenerateObjCMethod(OMD); 255041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 255141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar } 25521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump case Decl::ObjCCompatibleAlias: 255329254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall ObjCRuntime->RegisterAlias(cast<ObjCCompatibleAliasDecl>(D)); 255441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 255541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 255691e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson case Decl::LinkageSpec: 255791e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson EmitLinkageSpec(cast<LinkageSpecDecl>(D)); 255841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 255941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 256041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::FileScopeAsm: { 256141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar FileScopeAsmDecl *AD = cast<FileScopeAsmDecl>(D); 25625f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef AsmString = AD->getAsmString()->getString(); 25631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 256441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar const std::string &S = getModule().getModuleInlineAsm(); 256541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar if (S.empty()) 256641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar getModule().setModuleInlineAsm(AsmString); 25679f5bff086cad25c15b4deb8a7763786097aadccdChris Lattner else if (*--S.end() == '\n') 25689f5bff086cad25c15b4deb8a7763786097aadccdChris Lattner getModule().setModuleInlineAsm(S + AsmString.str()); 256941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar else 25708d04258483be6583f0865464234d014807a3e1ccBenjamin Kramer getModule().setModuleInlineAsm(S + '\n' + AsmString.str()); 257141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 257241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar } 25731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 25741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump default: 2575f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump // Make sure we handled everything we should, every other kind is a 2576f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump // non-top-level decl. FIXME: Would be nice to have an isTopLevelDeclKind 2577f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump // function. Need to recode Decl::Kind to do that easily. 257841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar assert(isa<TypeDecl>(D) && "Unsupported decl kind"); 257941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar } 258041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar} 2581744016dde06fcffd50931e94a98c850f8b12cd87John McCall 2582744016dde06fcffd50931e94a98c850f8b12cd87John McCall/// Turns the given pointer into a constant. 2583744016dde06fcffd50931e94a98c850f8b12cd87John McCallstatic llvm::Constant *GetPointerConstant(llvm::LLVMContext &Context, 2584744016dde06fcffd50931e94a98c850f8b12cd87John McCall const void *Ptr) { 2585744016dde06fcffd50931e94a98c850f8b12cd87John McCall uintptr_t PtrInt = reinterpret_cast<uintptr_t>(Ptr); 25862acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *i64 = llvm::Type::getInt64Ty(Context); 2587744016dde06fcffd50931e94a98c850f8b12cd87John McCall return llvm::ConstantInt::get(i64, PtrInt); 2588744016dde06fcffd50931e94a98c850f8b12cd87John McCall} 2589744016dde06fcffd50931e94a98c850f8b12cd87John McCall 2590744016dde06fcffd50931e94a98c850f8b12cd87John McCallstatic void EmitGlobalDeclMetadata(CodeGenModule &CGM, 2591744016dde06fcffd50931e94a98c850f8b12cd87John McCall llvm::NamedMDNode *&GlobalMetadata, 2592744016dde06fcffd50931e94a98c850f8b12cd87John McCall GlobalDecl D, 2593744016dde06fcffd50931e94a98c850f8b12cd87John McCall llvm::GlobalValue *Addr) { 2594744016dde06fcffd50931e94a98c850f8b12cd87John McCall if (!GlobalMetadata) 2595744016dde06fcffd50931e94a98c850f8b12cd87John McCall GlobalMetadata = 2596744016dde06fcffd50931e94a98c850f8b12cd87John McCall CGM.getModule().getOrInsertNamedMetadata("clang.global.decl.ptrs"); 2597744016dde06fcffd50931e94a98c850f8b12cd87John McCall 2598744016dde06fcffd50931e94a98c850f8b12cd87John McCall // TODO: should we report variant information for ctors/dtors? 2599744016dde06fcffd50931e94a98c850f8b12cd87John McCall llvm::Value *Ops[] = { 2600744016dde06fcffd50931e94a98c850f8b12cd87John McCall Addr, 2601744016dde06fcffd50931e94a98c850f8b12cd87John McCall GetPointerConstant(CGM.getLLVMContext(), D.getDecl()) 2602744016dde06fcffd50931e94a98c850f8b12cd87John McCall }; 26036f141659cab11109d9931d92d0988f8850778de3Jay Foad GlobalMetadata->addOperand(llvm::MDNode::get(CGM.getLLVMContext(), Ops)); 2604744016dde06fcffd50931e94a98c850f8b12cd87John McCall} 2605744016dde06fcffd50931e94a98c850f8b12cd87John McCall 2606744016dde06fcffd50931e94a98c850f8b12cd87John McCall/// Emits metadata nodes associating all the global values in the 2607744016dde06fcffd50931e94a98c850f8b12cd87John McCall/// current module with the Decls they came from. This is useful for 2608744016dde06fcffd50931e94a98c850f8b12cd87John McCall/// projects using IR gen as a subroutine. 2609744016dde06fcffd50931e94a98c850f8b12cd87John McCall/// 2610744016dde06fcffd50931e94a98c850f8b12cd87John McCall/// Since there's currently no way to associate an MDNode directly 2611744016dde06fcffd50931e94a98c850f8b12cd87John McCall/// with an llvm::GlobalValue, we create a global named metadata 2612744016dde06fcffd50931e94a98c850f8b12cd87John McCall/// with the name 'clang.global.decl.ptrs'. 2613744016dde06fcffd50931e94a98c850f8b12cd87John McCallvoid CodeGenModule::EmitDeclMetadata() { 2614744016dde06fcffd50931e94a98c850f8b12cd87John McCall llvm::NamedMDNode *GlobalMetadata = 0; 2615744016dde06fcffd50931e94a98c850f8b12cd87John McCall 2616744016dde06fcffd50931e94a98c850f8b12cd87John McCall // StaticLocalDeclMap 26175f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner for (llvm::DenseMap<GlobalDecl,StringRef>::iterator 2618744016dde06fcffd50931e94a98c850f8b12cd87John McCall I = MangledDeclNames.begin(), E = MangledDeclNames.end(); 2619744016dde06fcffd50931e94a98c850f8b12cd87John McCall I != E; ++I) { 2620744016dde06fcffd50931e94a98c850f8b12cd87John McCall llvm::GlobalValue *Addr = getModule().getNamedValue(I->second); 2621744016dde06fcffd50931e94a98c850f8b12cd87John McCall EmitGlobalDeclMetadata(*this, GlobalMetadata, I->first, Addr); 2622744016dde06fcffd50931e94a98c850f8b12cd87John McCall } 2623744016dde06fcffd50931e94a98c850f8b12cd87John McCall} 2624744016dde06fcffd50931e94a98c850f8b12cd87John McCall 2625744016dde06fcffd50931e94a98c850f8b12cd87John McCall/// Emits metadata nodes for all the local variables in the current 2626744016dde06fcffd50931e94a98c850f8b12cd87John McCall/// function. 2627744016dde06fcffd50931e94a98c850f8b12cd87John McCallvoid CodeGenFunction::EmitDeclMetadata() { 2628744016dde06fcffd50931e94a98c850f8b12cd87John McCall if (LocalDeclMap.empty()) return; 2629744016dde06fcffd50931e94a98c850f8b12cd87John McCall 2630744016dde06fcffd50931e94a98c850f8b12cd87John McCall llvm::LLVMContext &Context = getLLVMContext(); 2631744016dde06fcffd50931e94a98c850f8b12cd87John McCall 2632744016dde06fcffd50931e94a98c850f8b12cd87John McCall // Find the unique metadata ID for this name. 2633744016dde06fcffd50931e94a98c850f8b12cd87John McCall unsigned DeclPtrKind = Context.getMDKindID("clang.decl.ptr"); 2634744016dde06fcffd50931e94a98c850f8b12cd87John McCall 2635744016dde06fcffd50931e94a98c850f8b12cd87John McCall llvm::NamedMDNode *GlobalMetadata = 0; 2636744016dde06fcffd50931e94a98c850f8b12cd87John McCall 2637744016dde06fcffd50931e94a98c850f8b12cd87John McCall for (llvm::DenseMap<const Decl*, llvm::Value*>::iterator 2638744016dde06fcffd50931e94a98c850f8b12cd87John McCall I = LocalDeclMap.begin(), E = LocalDeclMap.end(); I != E; ++I) { 2639744016dde06fcffd50931e94a98c850f8b12cd87John McCall const Decl *D = I->first; 2640744016dde06fcffd50931e94a98c850f8b12cd87John McCall llvm::Value *Addr = I->second; 2641744016dde06fcffd50931e94a98c850f8b12cd87John McCall 2642744016dde06fcffd50931e94a98c850f8b12cd87John McCall if (llvm::AllocaInst *Alloca = dyn_cast<llvm::AllocaInst>(Addr)) { 2643744016dde06fcffd50931e94a98c850f8b12cd87John McCall llvm::Value *DAddr = GetPointerConstant(getLLVMContext(), D); 26446f141659cab11109d9931d92d0988f8850778de3Jay Foad Alloca->setMetadata(DeclPtrKind, llvm::MDNode::get(Context, DAddr)); 2645744016dde06fcffd50931e94a98c850f8b12cd87John McCall } else if (llvm::GlobalValue *GV = dyn_cast<llvm::GlobalValue>(Addr)) { 2646744016dde06fcffd50931e94a98c850f8b12cd87John McCall GlobalDecl GD = GlobalDecl(cast<VarDecl>(D)); 2647744016dde06fcffd50931e94a98c850f8b12cd87John McCall EmitGlobalDeclMetadata(CGM, GlobalMetadata, GD, GV); 2648744016dde06fcffd50931e94a98c850f8b12cd87John McCall } 2649744016dde06fcffd50931e94a98c850f8b12cd87John McCall } 2650744016dde06fcffd50931e94a98c850f8b12cd87John McCall} 2651673431a2986f750b4d8fadb57abf3f00db27bbbdDaniel Dunbar 26523dc05418538c719fea48b906bfa4febe5296e126Nick Lewyckyvoid CodeGenModule::EmitCoverageFile() { 26533dc05418538c719fea48b906bfa4febe5296e126Nick Lewycky if (!getCodeGenOpts().CoverageFile.empty()) { 26545ea4f44e34449a78d6b38aa47c14b527839d7aacNick Lewycky if (llvm::NamedMDNode *CUNode = TheModule.getNamedMetadata("llvm.dbg.cu")) { 26555ea4f44e34449a78d6b38aa47c14b527839d7aacNick Lewycky llvm::NamedMDNode *GCov = TheModule.getOrInsertNamedMetadata("llvm.gcov"); 26565ea4f44e34449a78d6b38aa47c14b527839d7aacNick Lewycky llvm::LLVMContext &Ctx = TheModule.getContext(); 26573dc05418538c719fea48b906bfa4febe5296e126Nick Lewycky llvm::MDString *CoverageFile = 26583dc05418538c719fea48b906bfa4febe5296e126Nick Lewycky llvm::MDString::get(Ctx, getCodeGenOpts().CoverageFile); 26595ea4f44e34449a78d6b38aa47c14b527839d7aacNick Lewycky for (int i = 0, e = CUNode->getNumOperands(); i != e; ++i) { 26605ea4f44e34449a78d6b38aa47c14b527839d7aacNick Lewycky llvm::MDNode *CU = CUNode->getOperand(i); 26613dc05418538c719fea48b906bfa4febe5296e126Nick Lewycky llvm::Value *node[] = { CoverageFile, CU }; 26625ea4f44e34449a78d6b38aa47c14b527839d7aacNick Lewycky llvm::MDNode *N = llvm::MDNode::get(Ctx, node); 26635ea4f44e34449a78d6b38aa47c14b527839d7aacNick Lewycky GCov->addOperand(N); 26645ea4f44e34449a78d6b38aa47c14b527839d7aacNick Lewycky } 26655ea4f44e34449a78d6b38aa47c14b527839d7aacNick Lewycky } 26665ea4f44e34449a78d6b38aa47c14b527839d7aacNick Lewycky } 26675ea4f44e34449a78d6b38aa47c14b527839d7aacNick Lewycky} 2668