CodeGenModule.cpp revision c1868e533e63a1b7dad7a22714fc593c045382ae
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" 4525a6a84cf5067b32c271e3ba078676dee838798dMicah Villmow#include "llvm/DataLayout.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, 6525a6a84cf5067b32c271e3ba078676dee838798dMicah Villmow llvm::Module &M, const llvm::DataLayout &TD, 66d6471f7c1921c7802804ce3ff6fe9768310f72b9David Blaikie DiagnosticsEngine &diags) 674e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie : Context(C), LangOpts(C.getLangOpts()), CodeGenOpts(CGO), TheModule(M), 6825a6a84cf5067b32c271e3ba078676dee838798dMicah Villmow TheDataLayout(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 105c9fe6056e4ce8ffad1ef439fca3318a5faf1c075Kostya Serebryany // Enable TBAA unless it's suppressed. ThreadSanitizer needs TBAA even at O0. 106c9fe6056e4ce8ffad1ef439fca3318a5faf1c075Kostya Serebryany if (LangOpts.ThreadSanitizer || 107c9fe6056e4ce8ffad1ef439fca3318a5faf1c075Kostya Serebryany (!CodeGenOpts.RelaxedAliasing && CodeGenOpts.OptimizationLevel > 0)) 108c9fe6056e4ce8ffad1ef439fca3318a5faf1c075Kostya Serebryany TBAA = new CodeGenTBAA(Context, VMContext, CodeGenOpts, getLangOpts(), 1090b5c4fc2ae3b503c2b1f354bf52b718aa50a6aeeDan Gohman ABI.getMangleContext()); 1103d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman 111e8ba8d78a258ec992d3521eebdae8324db777b14Nick Lewycky // If debug info or coverage generation is enabled, create the CGDebugInfo 112e8ba8d78a258ec992d3521eebdae8324db777b14Nick Lewycky // object. 1134cdad3151bfb2075c6bdbfe89fbb08f31a90a45bDouglas Gregor if (CodeGenOpts.getDebugInfo() != CodeGenOptions::NoDebugInfo || 1143a70cd6e1cc414856e41ce5509aa61c89bf472dcAlexey Samsonov CodeGenOpts.EmitGcovArcs || 115e8ba8d78a258ec992d3521eebdae8324db777b14Nick Lewycky CodeGenOpts.EmitGcovNotes) 116e8ba8d78a258ec992d3521eebdae8324db777b14Nick Lewycky DebugInfo = new CGDebugInfo(*this); 117d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall 118d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall Block.GlobalUniqueCount = 0; 1195936e33bf74dd6bf126ceee0f6169a2593d03a69John McCall 1204e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (C.getLangOpts().ObjCAutoRefCount) 121f85e193739c953358c865005855253af4f68a497John McCall ARCData = new ARCEntrypoints(); 122f85e193739c953358c865005855253af4f68a497John McCall RRData = new RREntrypoints(); 1232b94fe35edf951a14ecd32b21f7ebcc2e3754c67Chris Lattner} 1242b94fe35edf951a14ecd32b21f7ebcc2e3754c67Chris Lattner 1252b94fe35edf951a14ecd32b21f7ebcc2e3754c67Chris LattnerCodeGenModule::~CodeGenModule() { 126e926523105dd2604ccd5c101605dea43c5269965Peter Collingbourne delete ObjCRuntime; 1278c25fc584ce27d59df9923f153e8a132dde58d04Peter Collingbourne delete OpenCLRuntime; 1286c0aa5ff6e6253db0f993053599e2a52b5b93b2dPeter Collingbourne delete CUDARuntime; 1290628b724ff68105dc88af00a39f859447f22981eTed Kremenek delete TheTargetCodeGenInfo; 130f16aa103d3afd42fbca2ab346f191bf745cec092John McCall delete &ABI; 1314376c85fb0ac9e7fd779d246efc77e1169179138Dan Gohman delete TBAA; 132815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenek delete DebugInfo; 133f85e193739c953358c865005855253af4f68a497John McCall delete ARCData; 134f85e193739c953358c865005855253af4f68a497John McCall delete RRData; 135815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenek} 136815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenek 1370d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnallvoid CodeGenModule::createObjCRuntime() { 138260611a32535c851237926bfcf78869b13c07d5bJohn McCall // This is just isGNUFamily(), but we want to force implementors of 139260611a32535c851237926bfcf78869b13c07d5bJohn McCall // new ABIs to decide how best to do this. 140260611a32535c851237926bfcf78869b13c07d5bJohn McCall switch (LangOpts.ObjCRuntime.getKind()) { 14111d3f4cc27e6b923fc32481dc1bb5ec46c7d1f4bDavid Chisnall case ObjCRuntime::GNUstep: 14211d3f4cc27e6b923fc32481dc1bb5ec46c7d1f4bDavid Chisnall case ObjCRuntime::GCC: 143f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall case ObjCRuntime::ObjFW: 144e926523105dd2604ccd5c101605dea43c5269965Peter Collingbourne ObjCRuntime = CreateGNUObjCRuntime(*this); 145260611a32535c851237926bfcf78869b13c07d5bJohn McCall return; 146260611a32535c851237926bfcf78869b13c07d5bJohn McCall 147260611a32535c851237926bfcf78869b13c07d5bJohn McCall case ObjCRuntime::FragileMacOSX: 148260611a32535c851237926bfcf78869b13c07d5bJohn McCall case ObjCRuntime::MacOSX: 149260611a32535c851237926bfcf78869b13c07d5bJohn McCall case ObjCRuntime::iOS: 150e926523105dd2604ccd5c101605dea43c5269965Peter Collingbourne ObjCRuntime = CreateMacObjCRuntime(*this); 151260611a32535c851237926bfcf78869b13c07d5bJohn McCall return; 152260611a32535c851237926bfcf78869b13c07d5bJohn McCall } 153260611a32535c851237926bfcf78869b13c07d5bJohn McCall llvm_unreachable("bad runtime kind"); 1540d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall} 1550d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall 1568c25fc584ce27d59df9923f153e8a132dde58d04Peter Collingbournevoid CodeGenModule::createOpenCLRuntime() { 1578c25fc584ce27d59df9923f153e8a132dde58d04Peter Collingbourne OpenCLRuntime = new CGOpenCLRuntime(*this); 1588c25fc584ce27d59df9923f153e8a132dde58d04Peter Collingbourne} 1598c25fc584ce27d59df9923f153e8a132dde58d04Peter Collingbourne 1606c0aa5ff6e6253db0f993053599e2a52b5b93b2dPeter Collingbournevoid CodeGenModule::createCUDARuntime() { 1616c0aa5ff6e6253db0f993053599e2a52b5b93b2dPeter Collingbourne CUDARuntime = CreateNVCUDARuntime(*this); 1626c0aa5ff6e6253db0f993053599e2a52b5b93b2dPeter Collingbourne} 1636c0aa5ff6e6253db0f993053599e2a52b5b93b2dPeter Collingbourne 164815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenekvoid CodeGenModule::Release() { 16582227ff4eb665bbf41720ebdc0dc9215a86ba838Chris Lattner EmitDeferred(); 1666c6bda3b0b1d8adaac2ba3f4da7056e9f1eef52eEli Friedman EmitCXXGlobalInitFunc(); 167efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar EmitCXXGlobalDtorFunc(); 168e926523105dd2604ccd5c101605dea43c5269965Peter Collingbourne if (ObjCRuntime) 169e926523105dd2604ccd5c101605dea43c5269965Peter Collingbourne if (llvm::Function *ObjCInitFunction = ObjCRuntime->ModuleInitFunction()) 170208ff5e8a073de2a5d15cbe03cab8a4c0d935e28Daniel Dunbar AddGlobalCtor(ObjCInitFunction); 1716bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar EmitCtorList(GlobalCtors, "llvm.global_ctors"); 1726bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar EmitCtorList(GlobalDtors, "llvm.global_dtors"); 17377f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge EmitGlobalAnnotations(); 1740269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar EmitLLVMUsed(); 175744016dde06fcffd50931e94a98c850f8b12cd87John McCall 176b25938303de0976b9f189363d43033e5788e3d36John McCall SimplifyPersonality(); 177b25938303de0976b9f189363d43033e5788e3d36John McCall 178744016dde06fcffd50931e94a98c850f8b12cd87John McCall if (getCodeGenOpts().EmitDeclMetadata) 179744016dde06fcffd50931e94a98c850f8b12cd87John McCall EmitDeclMetadata(); 1805ea4f44e34449a78d6b38aa47c14b527839d7aacNick Lewycky 1815ea4f44e34449a78d6b38aa47c14b527839d7aacNick Lewycky if (getCodeGenOpts().EmitGcovArcs || getCodeGenOpts().EmitGcovNotes) 1823dc05418538c719fea48b906bfa4febe5296e126Nick Lewycky EmitCoverageFile(); 183f391dbe39dca85f2a2c6ea558811dacc571c223eDevang Patel 184f391dbe39dca85f2a2c6ea558811dacc571c223eDevang Patel if (DebugInfo) 185f391dbe39dca85f2a2c6ea558811dacc571c223eDevang Patel DebugInfo->finalize(); 186f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar} 187f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar 188e80d56771736c85fd8365c394a6731923b17e91dDevang Patelvoid CodeGenModule::UpdateCompletedType(const TagDecl *TD) { 189e80d56771736c85fd8365c394a6731923b17e91dDevang Patel // Make sure that this type is translated. 190e80d56771736c85fd8365c394a6731923b17e91dDevang Patel Types.UpdateCompletedType(TD); 191e80d56771736c85fd8365c394a6731923b17e91dDevang Patel} 192e80d56771736c85fd8365c394a6731923b17e91dDevang Patel 1933d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohmanllvm::MDNode *CodeGenModule::getTBAAInfo(QualType QTy) { 1943d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman if (!TBAA) 1953d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman return 0; 1963d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman return TBAA->getTBAAInfo(QTy); 1973d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman} 1983d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman 1998cb4a070d491ddd671b049110cc8d0accb08b905Kostya Serebryanyllvm::MDNode *CodeGenModule::getTBAAInfoForVTablePtr() { 2008cb4a070d491ddd671b049110cc8d0accb08b905Kostya Serebryany if (!TBAA) 2018cb4a070d491ddd671b049110cc8d0accb08b905Kostya Serebryany return 0; 2028cb4a070d491ddd671b049110cc8d0accb08b905Kostya Serebryany return TBAA->getTBAAInfoForVTablePtr(); 2038cb4a070d491ddd671b049110cc8d0accb08b905Kostya Serebryany} 2048cb4a070d491ddd671b049110cc8d0accb08b905Kostya Serebryany 205b22c7dc707cf3770ff3b5e5f11f11fd0aaa06d9bDan Gohmanllvm::MDNode *CodeGenModule::getTBAAStructInfo(QualType QTy) { 206b22c7dc707cf3770ff3b5e5f11f11fd0aaa06d9bDan Gohman if (!TBAA) 207b22c7dc707cf3770ff3b5e5f11f11fd0aaa06d9bDan Gohman return 0; 208b22c7dc707cf3770ff3b5e5f11f11fd0aaa06d9bDan Gohman return TBAA->getTBAAStructInfo(QTy); 209b22c7dc707cf3770ff3b5e5f11f11fd0aaa06d9bDan Gohman} 210b22c7dc707cf3770ff3b5e5f11f11fd0aaa06d9bDan Gohman 2113d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohmanvoid CodeGenModule::DecorateInstruction(llvm::Instruction *Inst, 2123d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman llvm::MDNode *TBAAInfo) { 2133d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman Inst->setMetadata(llvm::LLVMContext::MD_tbaa, TBAAInfo); 2143d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman} 2153d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman 2166374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCallbool CodeGenModule::isTargetDarwin() const { 217bcfd1f55bfbb3e5944cd5e03d07b343e280838c4Douglas Gregor return getContext().getTargetInfo().getTriple().isOSDarwin(); 2186374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall} 2196374c3307e2d73348f7b8cc73eeeb0998ad0ac94John McCall 2200f30a12ce7b3d4d86c9ca9072f587da77c8eef34Chandler Carruthvoid CodeGenModule::Error(SourceLocation loc, StringRef error) { 2210f30a12ce7b3d4d86c9ca9072f587da77c8eef34Chandler Carruth unsigned diagID = getDiags().getCustomDiagID(DiagnosticsEngine::Error, error); 22232096695c76033a6b0b1747c439f7378a11e8312John McCall getDiags().Report(Context.getFullLoc(loc), diagID); 22332096695c76033a6b0b1747c439f7378a11e8312John McCall} 22432096695c76033a6b0b1747c439f7378a11e8312John McCall 225488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar/// ErrorUnsupported - Print out an error that codegen doesn't support the 2262c8569d5f43f7de1fb993e84c95ea571dd9ac55eChris Lattner/// specified stmt yet. 22790df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbarvoid CodeGenModule::ErrorUnsupported(const Stmt *S, const char *Type, 22890df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar bool OmitOnError) { 22990df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar if (OmitOnError && getDiags().hasErrorOccurred()) 23090df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar return; 231d6471f7c1921c7802804ce3ff6fe9768310f72b9David Blaikie unsigned DiagID = getDiags().getCustomDiagID(DiagnosticsEngine::Error, 23256b8001b42bd603ef593e3cb278d8b9b9ba26ca9Daniel Dunbar "cannot compile this %0 yet"); 2332c8569d5f43f7de1fb993e84c95ea571dd9ac55eChris Lattner std::string Msg = Type; 2340a14eee528a901c16f0e288fbc10a3abc1660d87Chris Lattner getDiags().Report(Context.getFullLoc(S->getLocStart()), DiagID) 2350a14eee528a901c16f0e288fbc10a3abc1660d87Chris Lattner << Msg << S->getSourceRange(); 2362c8569d5f43f7de1fb993e84c95ea571dd9ac55eChris Lattner} 23758c3f9ec11cbe852a518bf2f83af46f938b7b852Chris Lattner 238488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar/// ErrorUnsupported - Print out an error that codegen doesn't support the 239c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner/// specified decl yet. 24090df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbarvoid CodeGenModule::ErrorUnsupported(const Decl *D, const char *Type, 24190df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar bool OmitOnError) { 24290df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar if (OmitOnError && getDiags().hasErrorOccurred()) 24390df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar return; 244d6471f7c1921c7802804ce3ff6fe9768310f72b9David Blaikie unsigned DiagID = getDiags().getCustomDiagID(DiagnosticsEngine::Error, 24556b8001b42bd603ef593e3cb278d8b9b9ba26ca9Daniel Dunbar "cannot compile this %0 yet"); 246c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner std::string Msg = Type; 2470a14eee528a901c16f0e288fbc10a3abc1660d87Chris Lattner getDiags().Report(Context.getFullLoc(D->getLocation()), DiagID) << Msg; 248c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner} 249c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner 250bc8d40d85f3fa1e34569834916f18fecaa635152John McCallllvm::ConstantInt *CodeGenModule::getSize(CharUnits size) { 251bc8d40d85f3fa1e34569834916f18fecaa635152John McCall return llvm::ConstantInt::get(SizeTy, size.getQuantity()); 252bc8d40d85f3fa1e34569834916f18fecaa635152John McCall} 253bc8d40d85f3fa1e34569834916f18fecaa635152John McCall 2541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpvoid CodeGenModule::setGlobalVisibility(llvm::GlobalValue *GV, 2550ffeaad72cb335b926b064379be4c9886bbff004Anders Carlsson const NamedDecl *D) const { 25604d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar // Internal definitions always have default visibility. 257df102fcb978588d5edbc661fb5da0b6922f9ab1cChris Lattner if (GV->hasLocalLinkage()) { 2587e714cd931fa3a90bfd728318a92485aa3e95748Daniel Dunbar GV->setVisibility(llvm::GlobalValue::DefaultVisibility); 2596ab187a49a42de6d351248d8a6e0206e39743a0cDaniel Dunbar return; 2607e714cd931fa3a90bfd728318a92485aa3e95748Daniel Dunbar } 2616ab187a49a42de6d351248d8a6e0206e39743a0cDaniel Dunbar 262af14603ca61757cf4361b583b45639a04c57e651John McCall // Set visibility for definitions. 263af14603ca61757cf4361b583b45639a04c57e651John McCall NamedDecl::LinkageInfo LV = D->getLinkageAndVisibility(); 264c7c9058f4977ef4584d68718e23f34504b150ef4Fariborz Jahanian if (LV.visibilityExplicit() || !GV->hasAvailableExternallyLinkage()) 265c7c9058f4977ef4584d68718e23f34504b150ef4Fariborz Jahanian GV->setVisibility(GetLLVMVisibility(LV.visibility())); 2667cd2e93125e2f3b6ca01b24ed0c3fd7e94683fd9Fariborz Jahanian} 2677cd2e93125e2f3b6ca01b24ed0c3fd7e94683fd9Fariborz Jahanian 268de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborgstatic llvm::GlobalVariable::ThreadLocalMode GetLLVMTLSModel(StringRef S) { 269de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg return llvm::StringSwitch<llvm::GlobalVariable::ThreadLocalMode>(S) 270de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg .Case("global-dynamic", llvm::GlobalVariable::GeneralDynamicTLSModel) 271de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg .Case("local-dynamic", llvm::GlobalVariable::LocalDynamicTLSModel) 272de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg .Case("initial-exec", llvm::GlobalVariable::InitialExecTLSModel) 273de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg .Case("local-exec", llvm::GlobalVariable::LocalExecTLSModel); 274de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg} 275de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg 276de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborgstatic llvm::GlobalVariable::ThreadLocalMode GetLLVMTLSModel( 277de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg CodeGenOptions::TLSModel M) { 278de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg switch (M) { 279de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg case CodeGenOptions::GeneralDynamicTLSModel: 280de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg return llvm::GlobalVariable::GeneralDynamicTLSModel; 281de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg case CodeGenOptions::LocalDynamicTLSModel: 282de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg return llvm::GlobalVariable::LocalDynamicTLSModel; 283de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg case CodeGenOptions::InitialExecTLSModel: 284de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg return llvm::GlobalVariable::InitialExecTLSModel; 285de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg case CodeGenOptions::LocalExecTLSModel: 286de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg return llvm::GlobalVariable::LocalExecTLSModel; 287de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg } 288de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg llvm_unreachable("Invalid TLS model!"); 289de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg} 290de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg 291de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborgvoid CodeGenModule::setTLSMode(llvm::GlobalVariable *GV, 292de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg const VarDecl &D) const { 293de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg assert(D.isThreadSpecified() && "setting TLS mode on non-TLS var!"); 294de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg 295de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg llvm::GlobalVariable::ThreadLocalMode TLM; 2964cdad3151bfb2075c6bdbfe89fbb08f31a90a45bDouglas Gregor TLM = GetLLVMTLSModel(CodeGenOpts.getDefaultTLSModel()); 297de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg 298de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg // Override the TLS model if it is explicitly specified. 299de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg if (D.hasAttr<TLSModelAttr>()) { 300de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg const TLSModelAttr *Attr = D.getAttr<TLSModelAttr>(); 301de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg TLM = GetLLVMTLSModel(Attr->getModel()); 302de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg } 303de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg 304de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg GV->setThreadLocalMode(TLM); 305de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg} 306de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg 307cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall/// Set the symbol visibility of type information (vtable and RTTI) 308cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall/// associated with the given type. 309cbfe50224b19119e759802bd0c1463269dffd09eJohn McCallvoid CodeGenModule::setTypeVisibility(llvm::GlobalValue *GV, 310cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall const CXXRecordDecl *RD, 311fa2e99f72f9bfe2270ea8caf76d0eef11c45259fAnders Carlsson TypeVisibilityKind TVK) const { 3120ffeaad72cb335b926b064379be4c9886bbff004Anders Carlsson setGlobalVisibility(GV, RD); 313cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall 314279b5eb6910d64a293e9c0e2887a05c65d8737d7John McCall if (!CodeGenOpts.HiddenWeakVTables) 315279b5eb6910d64a293e9c0e2887a05c65d8737d7John McCall return; 316279b5eb6910d64a293e9c0e2887a05c65d8737d7John McCall 3179a86a137b0872bad25161fb3408a71d919638757Anders Carlsson // We never want to drop the visibility for RTTI names. 3189a86a137b0872bad25161fb3408a71d919638757Anders Carlsson if (TVK == TVK_ForRTTIName) 3199a86a137b0872bad25161fb3408a71d919638757Anders Carlsson return; 3209a86a137b0872bad25161fb3408a71d919638757Anders Carlsson 321cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall // We want to drop the visibility to hidden for weak type symbols. 322cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall // This isn't possible if there might be unresolved references 323cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall // elsewhere that rely on this symbol being visible. 324cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall 3257a536907da776bdc47a704e7cafd641e8150e653John McCall // This should be kept roughly in sync with setThunkVisibility 3267a536907da776bdc47a704e7cafd641e8150e653John McCall // in CGVTables.cpp. 3277a536907da776bdc47a704e7cafd641e8150e653John McCall 328cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall // Preconditions. 329f502d93b0ea970bfbd897e657f8d940a20984de2Anders Carlsson if (GV->getLinkage() != llvm::GlobalVariable::LinkOnceODRLinkage || 330cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall GV->getVisibility() != llvm::GlobalVariable::DefaultVisibility) 331cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall return; 332cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall 333cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall // Don't override an explicit visibility attribute. 3344421d2b341d041df44013769f23c306308bbab83Douglas Gregor if (RD->getExplicitVisibility()) 335cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall return; 336cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall 337cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall switch (RD->getTemplateSpecializationKind()) { 338cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall // We have to disable the optimization if this is an EI definition 339cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall // because there might be EI declarations in other shared objects. 340cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall case TSK_ExplicitInstantiationDefinition: 341cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall case TSK_ExplicitInstantiationDeclaration: 342cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall return; 343cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall 3447a536907da776bdc47a704e7cafd641e8150e653John McCall // Every use of a non-template class's type information has to emit it. 345cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall case TSK_Undeclared: 346cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall break; 347cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall 3487a536907da776bdc47a704e7cafd641e8150e653John McCall // In theory, implicit instantiations can ignore the possibility of 3497a536907da776bdc47a704e7cafd641e8150e653John McCall // an explicit instantiation declaration because there necessarily 3507a536907da776bdc47a704e7cafd641e8150e653John McCall // must be an EI definition somewhere with default visibility. In 3517a536907da776bdc47a704e7cafd641e8150e653John McCall // practice, it's possible to have an explicit instantiation for 3527a536907da776bdc47a704e7cafd641e8150e653John McCall // an arbitrary template class, and linkers aren't necessarily able 3537a536907da776bdc47a704e7cafd641e8150e653John McCall // to deal with mixed-visibility symbols. 3547a536907da776bdc47a704e7cafd641e8150e653John McCall case TSK_ExplicitSpecialization: 355cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall case TSK_ImplicitInstantiation: 356aafd111afa6acd50fe4bec6c41add02ecf556535Douglas Gregor return; 357cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall } 358cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall 359cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall // If there's a key function, there may be translation units 360cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall // that don't have the key function's definition. But ignore 361cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall // this if we're emitting RTTI under -fno-rtti. 3624e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!(TVK != TVK_ForRTTI) || LangOpts.RTTI) { 363cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall if (Context.getKeyFunction(RD)) 364cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall return; 365fa2e99f72f9bfe2270ea8caf76d0eef11c45259fAnders Carlsson } 366cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall 367cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall // Otherwise, drop the visibility to hidden. 368cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall GV->setVisibility(llvm::GlobalValue::HiddenVisibility); 369b1c65ff108de47a89585ad37874bd6cb232664cdRafael Espindola GV->setUnnamedAddr(true); 370cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall} 371cbfe50224b19119e759802bd0c1463269dffd09eJohn McCall 3725f9e272e632e951b1efe824cd16acb4d96077930Chris LattnerStringRef CodeGenModule::getMangledName(GlobalDecl GD) { 373793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson const NamedDecl *ND = cast<NamedDecl>(GD.getDecl()); 374793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson 3755f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef &Str = MangledDeclNames[GD.getCanonicalDecl()]; 376793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson if (!Str.empty()) 377793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson return Str; 378793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson 3794c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall if (!getCXXABI().getMangleContext().shouldMangleDeclName(ND)) { 380793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson IdentifierInfo *II = ND->getIdentifier(); 381793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson assert(II && "Attempt to mangle unnamed decl."); 382793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson 383793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson Str = II->getName(); 384793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson return Str; 385793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson } 386793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson 387f7ccbad5d9949e7ddd1cbef43d482553b811e026Dylan Noblesmith SmallString<256> Buffer; 388c4850c2aa4c281a352e228aafc51fb1e30dcad02Rafael Espindola llvm::raw_svector_ostream Out(Buffer); 389793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson if (const CXXConstructorDecl *D = dyn_cast<CXXConstructorDecl>(ND)) 390c4850c2aa4c281a352e228aafc51fb1e30dcad02Rafael Espindola getCXXABI().getMangleContext().mangleCXXCtor(D, GD.getCtorType(), Out); 391793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson else if (const CXXDestructorDecl *D = dyn_cast<CXXDestructorDecl>(ND)) 392c4850c2aa4c281a352e228aafc51fb1e30dcad02Rafael Espindola getCXXABI().getMangleContext().mangleCXXDtor(D, GD.getDtorType(), Out); 393793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson else if (const BlockDecl *BD = dyn_cast<BlockDecl>(ND)) 3944904bf4e84cfb48080270ebaa9005327f18ab0e5Fariborz Jahanian getCXXABI().getMangleContext().mangleBlock(BD, Out, 3954904bf4e84cfb48080270ebaa9005327f18ab0e5Fariborz Jahanian dyn_cast_or_null<VarDecl>(initializedGlobalDecl.getDecl())); 396793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson else 397c4850c2aa4c281a352e228aafc51fb1e30dcad02Rafael Espindola getCXXABI().getMangleContext().mangleName(ND, Out); 398793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson 399793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson // Allocate space for the mangled name. 400c4850c2aa4c281a352e228aafc51fb1e30dcad02Rafael Espindola Out.flush(); 401793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson size_t Length = Buffer.size(); 402793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson char *Name = MangledNamesAllocator.Allocate<char>(Length); 403793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson std::copy(Buffer.begin(), Buffer.end(), Name); 404793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson 4055f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner Str = StringRef(Name, Length); 406793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson 407793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson return Str; 408793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson} 409793a990774826a0c20b0da66cec0991badfb8b63Anders Carlsson 41014110477887e3dc168ffc6c191e72d705051f99ePeter Collingbournevoid CodeGenModule::getBlockMangledName(GlobalDecl GD, MangleBuffer &Buffer, 41114110477887e3dc168ffc6c191e72d705051f99ePeter Collingbourne const BlockDecl *BD) { 41214110477887e3dc168ffc6c191e72d705051f99ePeter Collingbourne MangleContext &MangleCtx = getCXXABI().getMangleContext(); 41314110477887e3dc168ffc6c191e72d705051f99ePeter Collingbourne const Decl *D = GD.getDecl(); 414c4850c2aa4c281a352e228aafc51fb1e30dcad02Rafael Espindola llvm::raw_svector_ostream Out(Buffer.getBuffer()); 41514110477887e3dc168ffc6c191e72d705051f99ePeter Collingbourne if (D == 0) 4164904bf4e84cfb48080270ebaa9005327f18ab0e5Fariborz Jahanian MangleCtx.mangleGlobalBlock(BD, 4174904bf4e84cfb48080270ebaa9005327f18ab0e5Fariborz Jahanian dyn_cast_or_null<VarDecl>(initializedGlobalDecl.getDecl()), Out); 41814110477887e3dc168ffc6c191e72d705051f99ePeter Collingbourne else if (const CXXConstructorDecl *CD = dyn_cast<CXXConstructorDecl>(D)) 419c4850c2aa4c281a352e228aafc51fb1e30dcad02Rafael Espindola MangleCtx.mangleCtorBlock(CD, GD.getCtorType(), BD, Out); 42014110477887e3dc168ffc6c191e72d705051f99ePeter Collingbourne else if (const CXXDestructorDecl *DD = dyn_cast<CXXDestructorDecl>(D)) 421c4850c2aa4c281a352e228aafc51fb1e30dcad02Rafael Espindola MangleCtx.mangleDtorBlock(DD, GD.getDtorType(), BD, Out); 42214110477887e3dc168ffc6c191e72d705051f99ePeter Collingbourne else 423c4850c2aa4c281a352e228aafc51fb1e30dcad02Rafael Espindola MangleCtx.mangleBlock(cast<DeclContext>(D), BD, Out); 4249a8822bb154b792cdb18fe4cfb34480ca0ec7661Anders Carlsson} 4259a8822bb154b792cdb18fe4cfb34480ca0ec7661Anders Carlsson 4265f9e272e632e951b1efe824cd16acb4d96077930Chris Lattnerllvm::GlobalValue *CodeGenModule::GetGlobalValue(StringRef Name) { 427f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall return getModule().getNamedValue(Name); 4285f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor} 4295f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor 4306d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner/// AddGlobalCtor - Add a function to the list that will be called before 4316d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner/// main() runs. 4326bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbarvoid CodeGenModule::AddGlobalCtor(llvm::Function * Ctor, int Priority) { 43349988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // FIXME: Type coercion of void()* types. 4346bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar GlobalCtors.push_back(std::make_pair(Ctor, Priority)); 4356d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner} 4366d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner 4376bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar/// AddGlobalDtor - Add a function to the list that will be called 4386bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar/// when the module is unloaded. 4396bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbarvoid CodeGenModule::AddGlobalDtor(llvm::Function * Dtor, int Priority) { 44049988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // FIXME: Type coercion of void()* types. 4416bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar GlobalDtors.push_back(std::make_pair(Dtor, Priority)); 4426bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar} 4436bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar 4446bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbarvoid CodeGenModule::EmitCtorList(const CtorList &Fns, const char *GlobalName) { 4456bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar // Ctor function type is void()*. 4460774cb84719f2aea3016493a2bbd9a02aa3e0541John McCall llvm::FunctionType* CtorFTy = llvm::FunctionType::get(VoidTy, false); 44796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::Type *CtorPFTy = llvm::PointerType::getUnqual(CtorFTy); 4486bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar 4496bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar // Get the type of a ctor entry, { i32, void ()* }. 450c5cbb909e8a27deb8f1a2b6b7bf56a96051af81aChris Lattner llvm::StructType *CtorStructTy = 4518b418685e9e4f02f4eb2a76e1ec063e07552b68dChris Lattner llvm::StructType::get(Int32Ty, llvm::PointerType::getUnqual(CtorFTy), NULL); 4526bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar 4536bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar // Construct the constructor and destructor arrays. 4540b2397132efe74ee11c1b371dd9033820c54240fChris Lattner SmallVector<llvm::Constant*, 8> Ctors; 4556bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar for (CtorList::const_iterator I = Fns.begin(), E = Fns.end(); I != E; ++I) { 4560b2397132efe74ee11c1b371dd9033820c54240fChris Lattner llvm::Constant *S[] = { 4570b2397132efe74ee11c1b371dd9033820c54240fChris Lattner llvm::ConstantInt::get(Int32Ty, I->second, false), 4580b2397132efe74ee11c1b371dd9033820c54240fChris Lattner llvm::ConstantExpr::getBitCast(I->first, CtorPFTy) 4590b2397132efe74ee11c1b371dd9033820c54240fChris Lattner }; 46008e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Ctors.push_back(llvm::ConstantStruct::get(CtorStructTy, S)); 4616bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar } 4626bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar 4636bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar if (!Ctors.empty()) { 46496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *AT = llvm::ArrayType::get(CtorStructTy, Ctors.size()); 4651c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, AT, false, 466572cf09ae8a78af1c56d40b016ec4cf1837163acChris Lattner llvm::GlobalValue::AppendingLinkage, 4677db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::ConstantArray::get(AT, Ctors), 4681c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson GlobalName); 4696d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner } 4706d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner} 4716d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner 472d46f98573ba104eda102dd3224b2dca69f1c6336John McCallllvm::GlobalValue::LinkageTypes 473d46f98573ba104eda102dd3224b2dca69f1c6336John McCallCodeGenModule::getFunctionLinkage(const FunctionDecl *D) { 47490e99a84ddd020e8fda79643748243725a2ed071Argyrios Kyrtzidis GVALinkage Linkage = getContext().GetGVALinkageForFunction(D); 4757c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 476f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner if (Linkage == GVA_Internal) 477d46f98573ba104eda102dd3224b2dca69f1c6336John McCall return llvm::Function::InternalLinkage; 478f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner 479f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner if (D->hasAttr<DLLExportAttr>()) 480d46f98573ba104eda102dd3224b2dca69f1c6336John McCall return llvm::Function::DLLExportLinkage; 481f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner 482f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner if (D->hasAttr<WeakAttr>()) 483d46f98573ba104eda102dd3224b2dca69f1c6336John McCall return llvm::Function::WeakAnyLinkage; 484f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner 485f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner // In C99 mode, 'inline' functions are guaranteed to have a strong 486f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner // definition somewhere else, so we can use available_externally linkage. 487f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner if (Linkage == GVA_C99Inline) 488fd0f89d3d7e4220327abdec1cb115474d70219dcFariborz Jahanian return llvm::Function::AvailableExternallyLinkage; 4895584d91c938384b57563edbca5c2d4f1c66ff02aJohn McCall 4905584d91c938384b57563edbca5c2d4f1c66ff02aJohn McCall // Note that Apple's kernel linker doesn't support symbol 4915584d91c938384b57563edbca5c2d4f1c66ff02aJohn McCall // coalescing, so we need to avoid linkonce and weak linkages there. 4925584d91c938384b57563edbca5c2d4f1c66ff02aJohn McCall // Normally, this means we just map to internal, but for explicit 4935584d91c938384b57563edbca5c2d4f1c66ff02aJohn McCall // instantiations we'll map to external. 4945584d91c938384b57563edbca5c2d4f1c66ff02aJohn McCall 495f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner // In C++, the compiler has to emit a definition in every translation unit 496f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner // that references the function. We should use linkonce_odr because 497f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner // a) if all references in this translation unit are optimized away, we 498f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner // don't need to codegen it. b) if the function persists, it needs to be 499f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner // merged with other definitions. c) C++ has the ODR, so we know the 500f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner // definition is dependable. 501f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner if (Linkage == GVA_CXXInline || Linkage == GVA_TemplateInstantiation) 5024e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return !Context.getLangOpts().AppleKext 503142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian ? llvm::Function::LinkOnceODRLinkage 504142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian : llvm::Function::InternalLinkage; 505f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner 506f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner // An explicit instantiation of a template has weak linkage, since 507f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner // explicit instantiations can occur in multiple translation units 508f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner // and must all be equivalent. However, we are not allowed to 509f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner // throw away these explicit instantiations. 510f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner if (Linkage == GVA_ExplicitTemplateInstantiation) 5114e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return !Context.getLangOpts().AppleKext 512142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian ? llvm::Function::WeakODRLinkage 5135584d91c938384b57563edbca5c2d4f1c66ff02aJohn McCall : llvm::Function::ExternalLinkage; 514f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner 515f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner // Otherwise, we have strong external linkage. 516f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner assert(Linkage == GVA_StrongExternal); 517f815306571385e2892e079a409f1b5b11f5e5cbbChris Lattner return llvm::Function::ExternalLinkage; 518d46f98573ba104eda102dd3224b2dca69f1c6336John McCall} 519d4cbda6292b321c2e7dce7f039d92918fee99b3aNuno Lopes 520d46f98573ba104eda102dd3224b2dca69f1c6336John McCall 521d46f98573ba104eda102dd3224b2dca69f1c6336John McCall/// SetFunctionDefinitionAttributes - Set attributes for a global. 522d46f98573ba104eda102dd3224b2dca69f1c6336John McCall/// 523d46f98573ba104eda102dd3224b2dca69f1c6336John McCall/// FIXME: This is currently only done for aliases and functions, but not for 524d46f98573ba104eda102dd3224b2dca69f1c6336John McCall/// variables (these details are set in EmitGlobalVarDefinition for variables). 525d46f98573ba104eda102dd3224b2dca69f1c6336John McCallvoid CodeGenModule::SetFunctionDefinitionAttributes(const FunctionDecl *D, 526d46f98573ba104eda102dd3224b2dca69f1c6336John McCall llvm::GlobalValue *GV) { 5277c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar SetCommonAttributes(D, GV); 528d4cbda6292b321c2e7dce7f039d92918fee99b3aNuno Lopes} 529d4cbda6292b321c2e7dce7f039d92918fee99b3aNuno Lopes 5307dbd8197040313d796282d4af06eccdf8a17319cDaniel Dunbarvoid CodeGenModule::SetLLVMFunctionAttributes(const Decl *D, 5311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const CGFunctionInfo &Info, 5327dbd8197040313d796282d4af06eccdf8a17319cDaniel Dunbar llvm::Function *F) { 533ca6408c3176783f0b29da4679a08512aa05f0c73Daniel Dunbar unsigned CallingConv; 534761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patel AttributeListType AttributeList; 535ca6408c3176783f0b29da4679a08512aa05f0c73Daniel Dunbar ConstructAttributeList(Info, D, AttributeList, CallingConv); 536a61ab0521576e9e9e90cd2d482f8684e6070a93cChris Lattner F->setAttributes(llvm::AttrListPtr::get(AttributeList)); 537ca6408c3176783f0b29da4679a08512aa05f0c73Daniel Dunbar F->setCallingConv(static_cast<llvm::CallingConv::ID>(CallingConv)); 538f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar} 539f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar 540d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall/// Determines whether the language options require us to model 541d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall/// unwind exceptions. We treat -fexceptions as mandating this 542d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall/// except under the fragile ObjC ABI with only ObjC exceptions 543d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall/// enabled. This means, for example, that C with -fexceptions 544d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall/// enables this. 5454e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikiestatic bool hasUnwindExceptions(const LangOptions &LangOpts) { 546d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall // If exceptions are completely disabled, obviously this is false. 5474e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!LangOpts.Exceptions) return false; 548d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall 549d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall // If C++ exceptions are enabled, this is true. 5504e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (LangOpts.CXXExceptions) return true; 551d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall 552d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall // If ObjC exceptions are enabled, this depends on the ABI. 5534e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (LangOpts.ObjCExceptions) { 55411d3f4cc27e6b923fc32481dc1bb5ec46c7d1f4bDavid Chisnall return LangOpts.ObjCRuntime.hasUnwindExceptions(); 555d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall } 556d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall 557d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall return true; 558d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall} 559d1e40d5389a4382cbebc97d54792f41ee0414af4John McCall 5607c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbarvoid CodeGenModule::SetLLVMFunctionAttributesForDefinition(const Decl *D, 5617c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar llvm::Function *F) { 562abca5a1b3e74e644e297c7590b46ab73a6bb476aRafael Espindola if (CodeGenOpts.UnwindTables) 563abca5a1b3e74e644e297c7590b46ab73a6bb476aRafael Espindola F->setHasUWTable(); 564abca5a1b3e74e644e297c7590b46ab73a6bb476aRafael Espindola 5654e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!hasUnwindExceptions(LangOpts)) 566fac631052809b59c1b66f687c08a743de7fb50e9Bill Wendling F->addFnAttr(llvm::Attributes::NoUnwind); 567af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar 5682873aee1774a2ae731d6cc5c5ee05ba82780dc98Eli Friedman if (D->hasAttr<NakedAttr>()) { 5692873aee1774a2ae731d6cc5c5ee05ba82780dc98Eli Friedman // Naked implies noinline: we should not be inlining such functions. 570fac631052809b59c1b66f687c08a743de7fb50e9Bill Wendling F->addFnAttr(llvm::Attributes::Naked); 571fac631052809b59c1b66f687c08a743de7fb50e9Bill Wendling F->addFnAttr(llvm::Attributes::NoInline); 5722873aee1774a2ae731d6cc5c5ee05ba82780dc98Eli Friedman } 573dd0cb22bd62e1e835327f478a2dbf0b8fa439713Daniel Dunbar 5741feade8e520be483293dbf55eb57a51720899589Mike Stump if (D->hasAttr<NoInlineAttr>()) 575fac631052809b59c1b66f687c08a743de7fb50e9Bill Wendling F->addFnAttr(llvm::Attributes::NoInline); 576f55314dce992fd60816ba337ad151a2fb7c42239Mike Stump 5772873aee1774a2ae731d6cc5c5ee05ba82780dc98Eli Friedman // (noinline wins over always_inline, and we can't specify both in IR) 578adc6cbf5b502f1b58078455ab4fca66c7daac239Michael J. Spencer if ((D->hasAttr<AlwaysInlineAttr>() || D->hasAttr<ForceInlineAttr>()) && 5795c3e4ca581faa27c74443d17e5f740a686b62884Bill Wendling !F->getFnAttributes().hasAttribute(llvm::Attributes::NoInline)) 580fac631052809b59c1b66f687c08a743de7fb50e9Bill Wendling F->addFnAttr(llvm::Attributes::AlwaysInline); 5812873aee1774a2ae731d6cc5c5ee05ba82780dc98Eli Friedman 582ee409a916e9b97ed6bc2f48d8d6aac6b8b773d7bBenjamin Kramer // FIXME: Communicate hot and cold attributes to LLVM more directly. 583ee409a916e9b97ed6bc2f48d8d6aac6b8b773d7bBenjamin Kramer if (D->hasAttr<ColdAttr>()) 584fac631052809b59c1b66f687c08a743de7fb50e9Bill Wendling F->addFnAttr(llvm::Attributes::OptimizeForSize); 585ee409a916e9b97ed6bc2f48d8d6aac6b8b773d7bBenjamin Kramer 586c5f657fe308f22243f674fc1dfbe24915944d8bfRafael Espindola if (isa<CXXConstructorDecl>(D) || isa<CXXDestructorDecl>(D)) 587c5f657fe308f22243f674fc1dfbe24915944d8bfRafael Espindola F->setUnnamedAddr(true); 588c5f657fe308f22243f674fc1dfbe24915944d8bfRafael Espindola 589ef4d5ced04bf0b3d987e6b0e931f43125492f50cRichard Smith if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(D)) 590ef4d5ced04bf0b3d987e6b0e931f43125492f50cRichard Smith if (MD->isVirtual()) 591ef4d5ced04bf0b3d987e6b0e931f43125492f50cRichard Smith F->setUnnamedAddr(true); 592ef4d5ced04bf0b3d987e6b0e931f43125492f50cRichard Smith 5934e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (LangOpts.getStackProtector() == LangOptions::SSPOn) 594fac631052809b59c1b66f687c08a743de7fb50e9Bill Wendling F->addFnAttr(llvm::Attributes::StackProtect); 5954e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie else if (LangOpts.getStackProtector() == LangOptions::SSPReq) 596fac631052809b59c1b66f687c08a743de7fb50e9Bill Wendling F->addFnAttr(llvm::Attributes::StackProtectReq); 597fd015353a3c4f528216276f25df5b4d464d7a0cdAnders Carlsson 5984e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (LangOpts.AddressSanitizer) { 59989651eaf4170168cac2f34f2738e3d58fc38bbf1Alexander Potapenko // When AddressSanitizer is enabled, set AddressSafety attribute 60089651eaf4170168cac2f34f2738e3d58fc38bbf1Alexander Potapenko // unless __attribute__((no_address_safety_analysis)) is used. 60189651eaf4170168cac2f34f2738e3d58fc38bbf1Alexander Potapenko if (!D->hasAttr<NoAddressSafetyAnalysisAttr>()) 602fac631052809b59c1b66f687c08a743de7fb50e9Bill Wendling F->addFnAttr(llvm::Attributes::AddressSafety); 60389651eaf4170168cac2f34f2738e3d58fc38bbf1Alexander Potapenko } 60489651eaf4170168cac2f34f2738e3d58fc38bbf1Alexander Potapenko 605cf807c4dfdb23e8fa3f400e0b24ef5b79db7a530Sean Hunt unsigned alignment = D->getMaxAlignment() / Context.getCharWidth(); 606cf807c4dfdb23e8fa3f400e0b24ef5b79db7a530Sean Hunt if (alignment) 607cf807c4dfdb23e8fa3f400e0b24ef5b79db7a530Sean Hunt F->setAlignment(alignment); 608cf807c4dfdb23e8fa3f400e0b24ef5b79db7a530Sean Hunt 609fb51ddfafcd5f8536d0312b3daa3c0b74b90ab5bMike Stump // C++ ABI requires 2-byte alignment for member functions. 610bd6dbd19781cefd5b5ff9750c8bf86e6c341a68cMike Stump if (F->getAlignment() < 2 && isa<CXXMethodDecl>(D)) 611bd6dbd19781cefd5b5ff9750c8bf86e6c341a68cMike Stump F->setAlignment(2); 612f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar} 613f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar 6141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpvoid CodeGenModule::SetCommonAttributes(const Decl *D, 6157c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar llvm::GlobalValue *GV) { 616934176f27552141b5ad113cb3603ffb14906c570Anders Carlsson if (const NamedDecl *ND = dyn_cast<NamedDecl>(D)) 617934176f27552141b5ad113cb3603ffb14906c570Anders Carlsson setGlobalVisibility(GV, ND); 6181fb0caaa7bef765b85972274e3b434af2572c141John McCall else 6191fb0caaa7bef765b85972274e3b434af2572c141John McCall GV->setVisibility(llvm::GlobalValue::DefaultVisibility); 6207c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 62140b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (D->hasAttr<UsedAttr>()) 6227c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar AddUsedGlobal(GV); 6237c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 62440b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (const SectionAttr *SA = D->getAttr<SectionAttr>()) 6257c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar GV->setSection(SA->getName()); 62682d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov 62782d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov getTargetCodeGenInfo().SetTargetAttributes(D, GV, *this); 6287c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar} 6297c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 6300e4f40e1bbc4dce16bbb9870300a435419f1b3d5Daniel Dunbarvoid CodeGenModule::SetInternalFunctionAttributes(const Decl *D, 6310e4f40e1bbc4dce16bbb9870300a435419f1b3d5Daniel Dunbar llvm::Function *F, 6320e4f40e1bbc4dce16bbb9870300a435419f1b3d5Daniel Dunbar const CGFunctionInfo &FI) { 6330e4f40e1bbc4dce16bbb9870300a435419f1b3d5Daniel Dunbar SetLLVMFunctionAttributes(D, FI, F); 6340e4f40e1bbc4dce16bbb9870300a435419f1b3d5Daniel Dunbar SetLLVMFunctionAttributesForDefinition(D, F); 6357c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 6367c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar F->setLinkage(llvm::Function::InternalLinkage); 6377c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 6380e4f40e1bbc4dce16bbb9870300a435419f1b3d5Daniel Dunbar SetCommonAttributes(D, F); 639f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar} 640f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar 641b2bcf1c176b200b36f371e189ce22f93c86cdf45Anders Carlssonvoid CodeGenModule::SetFunctionAttributes(GlobalDecl GD, 642c6c14d1cd68afcd90d097715296377f15be45210Eli Friedman llvm::Function *F, 643c6c14d1cd68afcd90d097715296377f15be45210Eli Friedman bool IsIncompleteFunction) { 6440ac2cf4d28e1ed92508b27a3d9e28fc8db2a390bPeter Collingbourne if (unsigned IID = F->getIntrinsicID()) { 6450ac2cf4d28e1ed92508b27a3d9e28fc8db2a390bPeter Collingbourne // If this is an intrinsic function, set the function's attributes 6460ac2cf4d28e1ed92508b27a3d9e28fc8db2a390bPeter Collingbourne // to the intrinsic's attributes. 64750e6b18f99c45b31e6216ab221f6b3911b24fa1fBill Wendling F->setAttributes(llvm::Intrinsic::getAttributes(getLLVMContext(), 64850e6b18f99c45b31e6216ab221f6b3911b24fa1fBill Wendling (llvm::Intrinsic::ID)IID)); 6490ac2cf4d28e1ed92508b27a3d9e28fc8db2a390bPeter Collingbourne return; 6500ac2cf4d28e1ed92508b27a3d9e28fc8db2a390bPeter Collingbourne } 6510ac2cf4d28e1ed92508b27a3d9e28fc8db2a390bPeter Collingbourne 652b2bcf1c176b200b36f371e189ce22f93c86cdf45Anders Carlsson const FunctionDecl *FD = cast<FunctionDecl>(GD.getDecl()); 653b2bcf1c176b200b36f371e189ce22f93c86cdf45Anders Carlsson 654c6c14d1cd68afcd90d097715296377f15be45210Eli Friedman if (!IsIncompleteFunction) 655de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall SetLLVMFunctionAttributes(FD, getTypes().arrangeGlobalDeclaration(GD), F); 6561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6577c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // Only a few attributes are set on declarations; these may later be 6587c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // overridden by a definition. 6591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 66040b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (FD->hasAttr<DLLImportAttr>()) { 6617c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar F->setLinkage(llvm::Function::DLLImportLinkage); 6621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } else if (FD->hasAttr<WeakAttr>() || 6630a0d2b179085a52c10402feebeb6db8b4d96a140Douglas Gregor FD->isWeakImported()) { 6647c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // "extern_weak" is overloaded in LLVM; we probably should have 6651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // separate linkage types for this. 6667c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar F->setLinkage(llvm::Function::ExternalWeakLinkage); 6677c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar } else { 6681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump F->setLinkage(llvm::Function::ExternalLinkage); 669af14603ca61757cf4361b583b45639a04c57e651John McCall 670af14603ca61757cf4361b583b45639a04c57e651John McCall NamedDecl::LinkageInfo LV = FD->getLinkageAndVisibility(); 671af14603ca61757cf4361b583b45639a04c57e651John McCall if (LV.linkage() == ExternalLinkage && LV.visibilityExplicit()) { 672af14603ca61757cf4361b583b45639a04c57e651John McCall F->setVisibility(GetLLVMVisibility(LV.visibility())); 673af14603ca61757cf4361b583b45639a04c57e651John McCall } 6747c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar } 6757c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 67640b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (const SectionAttr *SA = FD->getAttr<SectionAttr>()) 6777c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar F->setSection(SA->getName()); 678219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar} 679219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 6800269871c9cba493f76237175ab60313406f3bafaDaniel Dunbarvoid CodeGenModule::AddUsedGlobal(llvm::GlobalValue *GV) { 6811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert(!GV->isDeclaration() && 6820269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar "Only globals with definition can force usage."); 68335f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner LLVMUsed.push_back(GV); 6840269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar} 6850269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar 6860269871c9cba493f76237175ab60313406f3bafaDaniel Dunbarvoid CodeGenModule::EmitLLVMUsed() { 6870269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar // Don't create llvm.used if there is no need. 688ad64e024bd18cf25dcfa44e049004371838decd8Chris Lattner if (LLVMUsed.empty()) 6890269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar return; 6900269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar 69135f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner // Convert LLVMUsed to what ConstantArray needs. 6920b2397132efe74ee11c1b371dd9033820c54240fChris Lattner SmallVector<llvm::Constant*, 8> UsedArray; 69335f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner UsedArray.resize(LLVMUsed.size()); 69435f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner for (unsigned i = 0, e = LLVMUsed.size(); i != e; ++i) { 6951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump UsedArray[i] = 6961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::ConstantExpr::getBitCast(cast<llvm::Constant>(&*LLVMUsed[i]), 6970b2397132efe74ee11c1b371dd9033820c54240fChris Lattner Int8PtrTy); 69835f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner } 6991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 700c38e9affd4519ea199af22419c8c794973cc4b23Fariborz Jahanian if (UsedArray.empty()) 701c38e9affd4519ea199af22419c8c794973cc4b23Fariborz Jahanian return; 7020b2397132efe74ee11c1b371dd9033820c54240fChris Lattner llvm::ArrayType *ATy = llvm::ArrayType::get(Int8PtrTy, UsedArray.size()); 7031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalVariable *GV = 7051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump new llvm::GlobalVariable(getModule(), ATy, false, 7060269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar llvm::GlobalValue::AppendingLinkage, 7077db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::ConstantArray::get(ATy, UsedArray), 7081c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson "llvm.used"); 7090269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar 7100269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar GV->setSection("llvm.metadata"); 7110269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar} 7120269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar 7130269871c9cba493f76237175ab60313406f3bafaDaniel Dunbarvoid CodeGenModule::EmitDeferred() { 71467b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Emit code for any potentially referenced deferred decls. Since a 71567b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // previously unused static decl may become used during the generation of code 716dce67a70a86db8758c926a76fdd980f5369d5746Nick Lewycky // for a static function, iterate until no changes are made. 717bbf58bb1b8dd8c5e0f07547a6c20ffd55385fcf6Rafael Espindola 718046c294a43024874ff35656c6e785b64e72f1f36Anders Carlsson while (!DeferredDeclsToEmit.empty() || !DeferredVTables.empty()) { 719046c294a43024874ff35656c6e785b64e72f1f36Anders Carlsson if (!DeferredVTables.empty()) { 720046c294a43024874ff35656c6e785b64e72f1f36Anders Carlsson const CXXRecordDecl *RD = DeferredVTables.back(); 721046c294a43024874ff35656c6e785b64e72f1f36Anders Carlsson DeferredVTables.pop_back(); 7229ee494f98610dcd79441dce469d7bf609fcd7b92Charles Davis getCXXABI().EmitVTables(RD); 723bbf58bb1b8dd8c5e0f07547a6c20ffd55385fcf6Rafael Espindola continue; 724bbf58bb1b8dd8c5e0f07547a6c20ffd55385fcf6Rafael Espindola } 725bbf58bb1b8dd8c5e0f07547a6c20ffd55385fcf6Rafael Espindola 7262a131fbca2a51085dc083b8c56a2d4ced3cf1413Anders Carlsson GlobalDecl D = DeferredDeclsToEmit.back(); 72767b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDeclsToEmit.pop_back(); 72867b00520c8f5b48fad722b790d87fea6be764efeChris Lattner 729c76702cc80c1ef8a94d82b62ddcb4ed4f67d5b8cJohn McCall // Check to see if we've already emitted this. This is necessary 730c76702cc80c1ef8a94d82b62ddcb4ed4f67d5b8cJohn McCall // for a couple of reasons: first, decls can end up in the 731c76702cc80c1ef8a94d82b62ddcb4ed4f67d5b8cJohn McCall // deferred-decls queue multiple times, and second, decls can end 732c76702cc80c1ef8a94d82b62ddcb4ed4f67d5b8cJohn McCall // up with definitions in unusual ways (e.g. by an extern inline 733c76702cc80c1ef8a94d82b62ddcb4ed4f67d5b8cJohn McCall // function acquiring a strong function redefinition). Just 734c76702cc80c1ef8a94d82b62ddcb4ed4f67d5b8cJohn McCall // ignore these cases. 735c76702cc80c1ef8a94d82b62ddcb4ed4f67d5b8cJohn McCall // 736c76702cc80c1ef8a94d82b62ddcb4ed4f67d5b8cJohn McCall // TODO: That said, looking this up multiple times is very wasteful. 7375f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef Name = getMangledName(D); 738f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall llvm::GlobalValue *CGRef = GetGlobalValue(Name); 73967b00520c8f5b48fad722b790d87fea6be764efeChris Lattner assert(CGRef && "Deferred decl wasn't referenced?"); 7401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 74167b00520c8f5b48fad722b790d87fea6be764efeChris Lattner if (!CGRef->isDeclaration()) 74267b00520c8f5b48fad722b790d87fea6be764efeChris Lattner continue; 7431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 744c76702cc80c1ef8a94d82b62ddcb4ed4f67d5b8cJohn McCall // GlobalAlias::isDeclaration() defers to the aliasee, but for our 745c76702cc80c1ef8a94d82b62ddcb4ed4f67d5b8cJohn McCall // purposes an alias counts as a definition. 746c76702cc80c1ef8a94d82b62ddcb4ed4f67d5b8cJohn McCall if (isa<llvm::GlobalAlias>(CGRef)) 747c76702cc80c1ef8a94d82b62ddcb4ed4f67d5b8cJohn McCall continue; 748c76702cc80c1ef8a94d82b62ddcb4ed4f67d5b8cJohn McCall 74967b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Otherwise, emit the definition and move on to the next one. 75067b00520c8f5b48fad722b790d87fea6be764efeChris Lattner EmitGlobalDefinition(D); 75167b00520c8f5b48fad722b790d87fea6be764efeChris Lattner } 7525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 7535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 75477f68bb90af93b95045fb994e7cd68137adcc132Julien Lerougevoid CodeGenModule::EmitGlobalAnnotations() { 75577f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge if (Annotations.empty()) 75677f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge return; 75777f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge 75877f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge // Create a new global variable for the ConstantStruct in the Module. 75977f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge llvm::Constant *Array = llvm::ConstantArray::get(llvm::ArrayType::get( 76077f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge Annotations[0]->getType(), Annotations.size()), Annotations); 76177f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge llvm::GlobalValue *gv = new llvm::GlobalVariable(getModule(), 76277f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge Array->getType(), false, llvm::GlobalValue::AppendingLinkage, Array, 76377f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge "llvm.global.annotations"); 76477f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge gv->setSection(AnnotationSection); 76577f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge} 76677f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge 76777f68bb90af93b95045fb994e7cd68137adcc132Julien Lerougellvm::Constant *CodeGenModule::EmitAnnotationString(llvm::StringRef Str) { 76877f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge llvm::StringMap<llvm::Constant*>::iterator i = AnnotationStrings.find(Str); 76977f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge if (i != AnnotationStrings.end()) 77077f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge return i->second; 77177f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge 77277f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge // Not found yet, create a new global. 77394010695f7fce626e41ef045b60def9c912e9ce8Chris Lattner llvm::Constant *s = llvm::ConstantDataArray::getString(getLLVMContext(), Str); 77477f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge llvm::GlobalValue *gv = new llvm::GlobalVariable(getModule(), s->getType(), 77577f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge true, llvm::GlobalValue::PrivateLinkage, s, ".str"); 77677f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge gv->setSection(AnnotationSection); 77777f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge gv->setUnnamedAddr(true); 77877f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge AnnotationStrings[Str] = gv; 77977f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge return gv; 78077f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge} 78177f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge 78277f68bb90af93b95045fb994e7cd68137adcc132Julien Lerougellvm::Constant *CodeGenModule::EmitAnnotationUnit(SourceLocation Loc) { 78377f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge SourceManager &SM = getContext().getSourceManager(); 78477f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge PresumedLoc PLoc = SM.getPresumedLoc(Loc); 78577f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge if (PLoc.isValid()) 78677f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge return EmitAnnotationString(PLoc.getFilename()); 78777f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge return EmitAnnotationString(SM.getBufferName(Loc)); 78877f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge} 78977f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge 79077f68bb90af93b95045fb994e7cd68137adcc132Julien Lerougellvm::Constant *CodeGenModule::EmitAnnotationLineNo(SourceLocation L) { 79177f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge SourceManager &SM = getContext().getSourceManager(); 79277f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge PresumedLoc PLoc = SM.getPresumedLoc(L); 79377f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge unsigned LineNo = PLoc.isValid() ? PLoc.getLine() : 79477f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge SM.getExpansionLineNumber(L); 79577f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge return llvm::ConstantInt::get(Int32Ty, LineNo); 79677f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge} 79777f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge 7981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpllvm::Constant *CodeGenModule::EmitAnnotateAttr(llvm::GlobalValue *GV, 7998bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman const AnnotateAttr *AA, 80077f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge SourceLocation L) { 80177f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge // Get the globals for file name, annotation, and the line number. 80277f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge llvm::Constant *AnnoGV = EmitAnnotationString(AA->getAnnotation()), 80377f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge *UnitGV = EmitAnnotationUnit(L), 80477f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge *LineNoCst = EmitAnnotationLineNo(L); 8058bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman 80657d5cee133495bc21d1abdbce45ab05a79274a23Daniel Dunbar // Create the ConstantStruct for the global annotation. 8078bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::Constant *Fields[4] = { 80877f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge llvm::ConstantExpr::getBitCast(GV, Int8PtrTy), 80977f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge llvm::ConstantExpr::getBitCast(AnnoGV, Int8PtrTy), 81077f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge llvm::ConstantExpr::getBitCast(UnitGV, Int8PtrTy), 81177f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge LineNoCst 8128bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman }; 813c5cbb909e8a27deb8f1a2b6b7bf56a96051af81aChris Lattner return llvm::ConstantStruct::getAnon(Fields); 8148bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman} 8158bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman 81677f68bb90af93b95045fb994e7cd68137adcc132Julien Lerougevoid CodeGenModule::AddGlobalAnnotations(const ValueDecl *D, 81777f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge llvm::GlobalValue *GV) { 81877f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge assert(D->hasAttr<AnnotateAttr>() && "no annotate attribute"); 81977f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge // Get the struct elements for these annotations. 82077f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge for (specific_attr_iterator<AnnotateAttr> 82177f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge ai = D->specific_attr_begin<AnnotateAttr>(), 82277f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge ae = D->specific_attr_end<AnnotateAttr>(); ai != ae; ++ai) 82377f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge Annotations.push_back(EmitAnnotateAttr(GV, *ai, D->getLocation())); 82477f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge} 82577f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge 826a6d6af308bfc9b72467b432a045a9fc6673e3821Argyrios Kyrtzidisbool CodeGenModule::MayDeferGeneration(const ValueDecl *Global) { 82790e99a84ddd020e8fda79643748243725a2ed071Argyrios Kyrtzidis // Never defer when EmitAllDecls is specified. 8284e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (LangOpts.EmitAllDecls) 829a6d6af308bfc9b72467b432a045a9fc6673e3821Argyrios Kyrtzidis return false; 8300b6bc8bd7a1d2a7d7478d13d78cff94cacad61fcDouglas Gregor 8314ac7c0bb39696e92fd220118fedc484c09a69870Argyrios Kyrtzidis return !getContext().DeclMustBeEmitted(Global); 83273241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar} 83373241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar 834c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weberllvm::Constant *CodeGenModule::GetAddrOfUuidDescriptor( 835c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber const CXXUuidofExpr* E) { 836c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber // Sema has verified that IIDSource has a __declspec(uuid()), and that its 837c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber // well-formed. 838c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber StringRef Uuid; 839c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber if (E->isTypeOperand()) 840c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber Uuid = CXXUuidofExpr::GetUuidAttrOfType(E->getTypeOperand())->getGuid(); 841c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber else { 842c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber // Special case: __uuidof(0) means an all-zero GUID. 843c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber Expr *Op = E->getExprOperand(); 844c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber if (!Op->isNullPointerConstant(Context, Expr::NPC_ValueDependentIsNull)) 845c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber Uuid = CXXUuidofExpr::GetUuidAttrOfType(Op->getType())->getGuid(); 846c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber else 847c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber Uuid = "00000000-0000-0000-0000-000000000000"; 848c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber } 849c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber std::string Name = "__uuid_" + Uuid.str(); 850c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber 851c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber // Look for an existing global. 852c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber if (llvm::GlobalVariable *GV = getModule().getNamedGlobal(Name)) 853c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber return GV; 854c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber 855c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber llvm::Constant *Init = EmitUuidofInitializer(Uuid, E->getType()); 856c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber assert(Init && "failed to initialize as constant"); 857c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber 858c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber // GUIDs are assumed to be 16 bytes, spread over 4-2-2-8 bytes. However, the 859c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber // first field is declared as "long", which for many targets is 8 bytes. 860c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber // Those architectures are not supported. (With the MS abi, long is always 4 861c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber // bytes.) 862c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber llvm::Type *GuidType = getTypes().ConvertType(E->getType()); 863c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber if (Init->getType() != GuidType) { 864c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber DiagnosticsEngine &Diags = getDiags(); 865c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error, 866c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber "__uuidof codegen is not supported on this architecture"); 867c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber Diags.Report(E->getExprLoc(), DiagID) << E->getSourceRange(); 868c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber Init = llvm::UndefValue::get(GuidType); 869c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber } 870c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber 871c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber llvm::GlobalVariable *GV = new llvm::GlobalVariable(getModule(), GuidType, 872c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber /*isConstant=*/true, llvm::GlobalValue::PrivateLinkage, Init, Name); 873c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber GV->setUnnamedAddr(true); 874c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber return GV; 875c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber} 876c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber 8776a836706c40a31c716952b74785102c90fd6afa7Rafael Espindolallvm::Constant *CodeGenModule::GetWeakRefReference(const ValueDecl *VD) { 8786a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola const AliasAttr *AA = VD->getAttr<AliasAttr>(); 8796a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola assert(AA && "No alias?"); 8806a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola 8812acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *DeclTy = getTypes().ConvertTypeForMem(VD->getType()); 8826a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola 8836a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola // See if there is already something with the target's name in the module. 884f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall llvm::GlobalValue *Entry = GetGlobalValue(AA->getAliasee()); 8854695f91f4302a90ae462cd64dda59b34c3dad821Joerg Sonnenberger if (Entry) { 8864695f91f4302a90ae462cd64dda59b34c3dad821Joerg Sonnenberger unsigned AS = getContext().getTargetAddressSpace(VD->getType()); 8874695f91f4302a90ae462cd64dda59b34c3dad821Joerg Sonnenberger return llvm::ConstantExpr::getBitCast(Entry, DeclTy->getPointerTo(AS)); 8884695f91f4302a90ae462cd64dda59b34c3dad821Joerg Sonnenberger } 8896a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola 8906a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola llvm::Constant *Aliasee; 8916a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola if (isa<llvm::FunctionType>(DeclTy)) 892c857ce8b08397ed778928b8a000732ca90da2a8cAlex Rosenberg Aliasee = GetOrCreateLLVMFunction(AA->getAliasee(), DeclTy, 893c857ce8b08397ed778928b8a000732ca90da2a8cAlex Rosenberg GlobalDecl(cast<FunctionDecl>(VD)), 8941faa89f9c619e4b2411fab4af7e22ee7a2bd9009Anders Carlsson /*ForVTable=*/false); 8956a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola else 896f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall Aliasee = GetOrCreateLLVMGlobal(AA->getAliasee(), 8976a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola llvm::PointerType::getUnqual(DeclTy), 0); 8984695f91f4302a90ae462cd64dda59b34c3dad821Joerg Sonnenberger 8994695f91f4302a90ae462cd64dda59b34c3dad821Joerg Sonnenberger llvm::GlobalValue* F = cast<llvm::GlobalValue>(Aliasee); 9004695f91f4302a90ae462cd64dda59b34c3dad821Joerg Sonnenberger F->setLinkage(llvm::Function::ExternalWeakLinkage); 9014695f91f4302a90ae462cd64dda59b34c3dad821Joerg Sonnenberger WeakRefReferences.insert(F); 9026a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola 9036a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola return Aliasee; 9046a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola} 9056a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola 906b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattnervoid CodeGenModule::EmitGlobal(GlobalDecl GD) { 9074a6835e650ff24e19ce08a3bd347c0ad186777fdAnders Carlsson const ValueDecl *Global = cast<ValueDecl>(GD.getDecl()); 9081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9096a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola // Weak references don't produce any output by themselves. 9106a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola if (Global->hasAttr<WeakRefAttr>()) 9116a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola return; 9126a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola 913bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // If this is an alias definition (which otherwise looks like a declaration) 914bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // emit it now. 91540b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (Global->hasAttr<AliasAttr>()) 916f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall return EmitAliasDefinition(GD); 917219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 918d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne // If this is CUDA, be selective about which declarations we emit. 9194e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (LangOpts.CUDA) { 920d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne if (CodeGenOpts.CUDAIsDevice) { 921d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne if (!Global->hasAttr<CUDADeviceAttr>() && 922d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne !Global->hasAttr<CUDAGlobalAttr>() && 923d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne !Global->hasAttr<CUDAConstantAttr>() && 924d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne !Global->hasAttr<CUDASharedAttr>()) 925d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne return; 926d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne } else { 927d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne if (!Global->hasAttr<CUDAHostAttr>() && ( 928d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne Global->hasAttr<CUDADeviceAttr>() || 929d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne Global->hasAttr<CUDAConstantAttr>() || 930d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne Global->hasAttr<CUDASharedAttr>())) 931d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne return; 932d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne } 933d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne } 934d51e43af0b3a6897b971f316c4de2035ec82d1f2Peter Collingbourne 93567b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Ignore declarations, they will be emitted on their first use. 9365e1e1f95c98b1add70c238093bbd5dc8d4f9c4e9Daniel Dunbar if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(Global)) { 93773241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar // Forward declarations are emitted lazily on first use. 938dce67a70a86db8758c926a76fdd980f5369d5746Nick Lewycky if (!FD->doesThisDeclarationHaveABody()) { 939dce67a70a86db8758c926a76fdd980f5369d5746Nick Lewycky if (!FD->doesDeclarationForceExternallyVisibleDefinition()) 940dce67a70a86db8758c926a76fdd980f5369d5746Nick Lewycky return; 941dce67a70a86db8758c926a76fdd980f5369d5746Nick Lewycky 942dce67a70a86db8758c926a76fdd980f5369d5746Nick Lewycky const FunctionDecl *InlineDefinition = 0; 943dce67a70a86db8758c926a76fdd980f5369d5746Nick Lewycky FD->getBody(InlineDefinition); 944dce67a70a86db8758c926a76fdd980f5369d5746Nick Lewycky 9455f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef MangledName = getMangledName(GD); 9467e42392eb2ea29ddeb6d125417fb4c17d847b5e0Benjamin Kramer DeferredDecls.erase(MangledName); 947dce67a70a86db8758c926a76fdd980f5369d5746Nick Lewycky EmitGlobalDefinition(InlineDefinition); 94873241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar return; 949dce67a70a86db8758c926a76fdd980f5369d5746Nick Lewycky } 9500269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar } else { 9510269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar const VarDecl *VD = cast<VarDecl>(Global); 952bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar assert(VD->isFileVarDecl() && "Cannot emit local var decl as global."); 953bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 954a9a55c063e9e59c6ab0a6d7a21302660f7bde9f9Douglas Gregor if (VD->isThisDeclarationADefinition() != VarDecl::Definition) 95573241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar return; 9564c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman } 9574c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman 95867b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Defer code generation when possible if this is a static definition, inline 95967b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // function etc. These we only want to emit if they are used. 9604357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner if (!MayDeferGeneration(Global)) { 9614357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner // Emit the definition if it can't be deferred. 9624357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner EmitGlobalDefinition(GD); 963bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar return; 964bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } 965bf40cb518312dde1c07e44fcae59bc4eec65589cJohn McCall 966bf40cb518312dde1c07e44fcae59bc4eec65589cJohn McCall // If we're deferring emission of a C++ variable with an 967bf40cb518312dde1c07e44fcae59bc4eec65589cJohn McCall // initializer, remember the order in which it appeared in the file. 9684e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().CPlusPlus && isa<VarDecl>(Global) && 969bf40cb518312dde1c07e44fcae59bc4eec65589cJohn McCall cast<VarDecl>(Global)->hasInit()) { 970bf40cb518312dde1c07e44fcae59bc4eec65589cJohn McCall DelayedCXXInitPosition[Global] = CXXGlobalInits.size(); 971bf40cb518312dde1c07e44fcae59bc4eec65589cJohn McCall CXXGlobalInits.push_back(0); 972bf40cb518312dde1c07e44fcae59bc4eec65589cJohn McCall } 9734357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner 9744357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner // If the value has already been used, add it directly to the 9754357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner // DeferredDeclsToEmit list. 9765f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef MangledName = getMangledName(GD); 9774357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner if (GetGlobalValue(MangledName)) 9784357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner DeferredDeclsToEmit.push_back(GD); 9794357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner else { 9804357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner // Otherwise, remember that we saw a deferred decl with this name. The 9814357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner // first use of the mangled name will cause it to move into 9824357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner // DeferredDeclsToEmit. 9834357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner DeferredDecls[MangledName] = GD; 9844357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner } 9854c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman} 9864c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman 987a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindolanamespace { 988a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola struct FunctionIsDirectlyRecursive : 989a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola public RecursiveASTVisitor<FunctionIsDirectlyRecursive> { 990a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola const StringRef Name; 991bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola const Builtin::Context &BI; 992a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola bool Result; 993bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola FunctionIsDirectlyRecursive(StringRef N, const Builtin::Context &C) : 994bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola Name(N), BI(C), Result(false) { 995a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola } 996a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola typedef RecursiveASTVisitor<FunctionIsDirectlyRecursive> Base; 997a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola 998a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola bool TraverseCallExpr(CallExpr *E) { 999bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola const FunctionDecl *FD = E->getDirectCallee(); 1000bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola if (!FD) 1001a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola return true; 1002bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola AsmLabelAttr *Attr = FD->getAttr<AsmLabelAttr>(); 1003bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola if (Attr && Name == Attr->getLabel()) { 1004bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola Result = true; 1005bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola return false; 1006bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola } 1007bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola unsigned BuiltinID = FD->getBuiltinID(); 1008bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola if (!BuiltinID) 1009a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola return true; 1010f6b56374e4e5b9f0078efac5ed4918c3a04296f7Nick Lewycky StringRef BuiltinName = BI.GetName(BuiltinID); 1011f6b56374e4e5b9f0078efac5ed4918c3a04296f7Nick Lewycky if (BuiltinName.startswith("__builtin_") && 1012f6b56374e4e5b9f0078efac5ed4918c3a04296f7Nick Lewycky Name == BuiltinName.slice(strlen("__builtin_"), StringRef::npos)) { 1013a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola Result = true; 1014a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola return false; 1015a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola } 1016a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola return true; 1017a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola } 1018a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola }; 1019a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola} 1020a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola 1021bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola// isTriviallyRecursive - Check if this function calls another 1022bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola// decl that, because of the asm attribute or the other decl being a builtin, 1023bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola// ends up pointing to itself. 1024a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindolabool 1025bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael EspindolaCodeGenModule::isTriviallyRecursive(const FunctionDecl *FD) { 1026bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola StringRef Name; 1027bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola if (getCXXABI().getMangleContext().shouldMangleDeclName(FD)) { 102822afaccd9ab77d46106e94c47907d955a014ae3fNick Lewycky // asm labels are a special kind of mangling we have to support. 1029bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola AsmLabelAttr *Attr = FD->getAttr<AsmLabelAttr>(); 1030bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola if (!Attr) 1031bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola return false; 1032bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola Name = Attr->getLabel(); 1033bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola } else { 1034bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola Name = FD->getName(); 1035bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola } 1036a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola 1037bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola FunctionIsDirectlyRecursive Walker(Name, Context.BuiltinInfo); 1038bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola Walker.TraverseFunctionDecl(const_cast<FunctionDecl*>(FD)); 1039a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola return Walker.Result; 1040a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola} 1041a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola 1042a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindolabool 1043a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael EspindolaCodeGenModule::shouldEmitFunction(const FunctionDecl *F) { 1044a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola if (getFunctionLinkage(F) != llvm::Function::AvailableExternallyLinkage) 1045a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola return true; 1046cc4889f72ec68319969ba51e214d9940eb9327e5Rafael Espindola if (CodeGenOpts.OptimizationLevel == 0 && 1047adc6cbf5b502f1b58078455ab4fca66c7daac239Michael J. Spencer !F->hasAttr<AlwaysInlineAttr>() && !F->hasAttr<ForceInlineAttr>()) 1048a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola return false; 1049a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola // PR9614. Avoid cases where the source code is lying to us. An available 1050a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola // externally function should have an equivalent function somewhere else, 1051a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola // but a function that calls itself is clearly not equivalent to the real 1052a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola // implementation. 1053a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola // This happens in glibc's btowc and in some configure checks. 1054bcf6b98247bd3ac76c5edf706b1087a8d32c0320Rafael Espindola return !isTriviallyRecursive(F); 1055a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola} 1056a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola 1057b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattnervoid CodeGenModule::EmitGlobalDefinition(GlobalDecl GD) { 10584a6835e650ff24e19ce08a3bd347c0ad186777fdAnders Carlsson const ValueDecl *D = cast<ValueDecl>(GD.getDecl()); 10591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1060cb421fa690da545b58a720abe5f1c49b166dbde7Dan Gohman PrettyStackTraceDecl CrashInfo(const_cast<ValueDecl *>(D), D->getLocation(), 10618e2efcc267ed12dc435782288b7f9a4a1bc56c72Anders Carlsson Context.getSourceManager(), 10628e2efcc267ed12dc435782288b7f9a4a1bc56c72Anders Carlsson "Generating code for declaration"); 10638e2efcc267ed12dc435782288b7f9a4a1bc56c72Anders Carlsson 106444eac33ae12df384f3f002102f919f603bee330fDouglas Gregor if (const FunctionDecl *Function = dyn_cast<FunctionDecl>(D)) { 106544eac33ae12df384f3f002102f919f603bee330fDouglas Gregor // At -O0, don't generate IR for functions with available_externally 106644eac33ae12df384f3f002102f919f603bee330fDouglas Gregor // linkage. 1067a411d2f1ed4598a7a96a7befe07a9d9ee1a6efdeRafael Espindola if (!shouldEmitFunction(Function)) 106844eac33ae12df384f3f002102f919f603bee330fDouglas Gregor return; 106944eac33ae12df384f3f002102f919f603bee330fDouglas Gregor 107044eac33ae12df384f3f002102f919f603bee330fDouglas Gregor if (const CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(D)) { 10717dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman // Make sure to emit the definition(s) before we emit the thunks. 10727dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman // This is necessary for the generation of certain thunks. 10737dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman if (const CXXConstructorDecl *CD = dyn_cast<CXXConstructorDecl>(Method)) 10747dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman EmitCXXConstructor(CD, GD.getCtorType()); 10757dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman else if (const CXXDestructorDecl *DD =dyn_cast<CXXDestructorDecl>(Method)) 10767dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman EmitCXXDestructor(DD, GD.getDtorType()); 10777dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman else 10787dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman EmitGlobalFunctionDefinition(GD); 10797dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman 108044eac33ae12df384f3f002102f919f603bee330fDouglas Gregor if (Method->isVirtual()) 108144eac33ae12df384f3f002102f919f603bee330fDouglas Gregor getVTables().EmitThunks(GD); 10827270ee4cd4794281c09dfb6931a98bbb2581ef02Anders Carlsson 10837dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman return; 108444eac33ae12df384f3f002102f919f603bee330fDouglas Gregor } 1085b5e8156ebd6accd27daeaae6971597c45d5e5139Chris Lattner 1086b5e8156ebd6accd27daeaae6971597c45d5e5139Chris Lattner return EmitGlobalFunctionDefinition(GD); 108744eac33ae12df384f3f002102f919f603bee330fDouglas Gregor } 1088b5e8156ebd6accd27daeaae6971597c45d5e5139Chris Lattner 1089b5e8156ebd6accd27daeaae6971597c45d5e5139Chris Lattner if (const VarDecl *VD = dyn_cast<VarDecl>(D)) 1090b5e8156ebd6accd27daeaae6971597c45d5e5139Chris Lattner return EmitGlobalVarDefinition(VD); 10914357a8291d759f6f9c36d3edeee8476d3eaf0804Chris Lattner 1092b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("Invalid argument to EmitGlobalDefinition()"); 1093bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar} 1094bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 109574391b48b4791cded373683a3baf67314f358d50Chris Lattner/// GetOrCreateLLVMFunction - If the specified mangled name is not in the 109674391b48b4791cded373683a3baf67314f358d50Chris Lattner/// module, create and return an llvm Function with the specified type. If there 109774391b48b4791cded373683a3baf67314f358d50Chris Lattner/// is something in the module with the specified name, return it potentially 109874391b48b4791cded373683a3baf67314f358d50Chris Lattner/// bitcasted to the right type. 109974391b48b4791cded373683a3baf67314f358d50Chris Lattner/// 110074391b48b4791cded373683a3baf67314f358d50Chris Lattner/// If D is non-null, it specifies a decl that correspond to this. This is used 110174391b48b4791cded373683a3baf67314f358d50Chris Lattner/// to set the attributes on the function when it is first created. 1102f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCallllvm::Constant * 11035f9e272e632e951b1efe824cd16acb4d96077930Chris LattnerCodeGenModule::GetOrCreateLLVMFunction(StringRef MangledName, 11042acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *Ty, 1105f85e193739c953358c865005855253af4f68a497John McCall GlobalDecl D, bool ForVTable, 1106f85e193739c953358c865005855253af4f68a497John McCall llvm::Attributes ExtraAttrs) { 11070558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner // Lookup the entry, lazily creating it if necessary. 1108f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall llvm::GlobalValue *Entry = GetGlobalValue(MangledName); 11090558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner if (Entry) { 1110d48bcb2f4dedf8e7b654cb017968b3d7b6663a57Benjamin Kramer if (WeakRefReferences.erase(Entry)) { 11116a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola const FunctionDecl *FD = cast_or_null<FunctionDecl>(D.getDecl()); 11126a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola if (FD && !FD->hasAttr<WeakAttr>()) 11137270ee4cd4794281c09dfb6931a98bbb2581ef02Anders Carlsson Entry->setLinkage(llvm::Function::ExternalLinkage); 11146a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola } 11156a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola 11160558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner if (Entry->getType()->getElementType() == Ty) 11170558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner return Entry; 11181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11190558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner // Make sure the result is of the correct type. 11209cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner return llvm::ConstantExpr::getBitCast(Entry, Ty->getPointerTo()); 11210558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner } 11221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1123654ad40f27d684e8f3eddbc990247a6dbea5ddedEli Friedman // This function doesn't have a complete type (for example, the return 1124654ad40f27d684e8f3eddbc990247a6dbea5ddedEli Friedman // type is an incomplete struct). Use a fake type instead, and make 1125654ad40f27d684e8f3eddbc990247a6dbea5ddedEli Friedman // sure not to try to set attributes. 1126654ad40f27d684e8f3eddbc990247a6dbea5ddedEli Friedman bool IsIncompleteFunction = false; 1127784f21121a6c9418ebd86baa6814e36e1176c410John McCall 11282acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::FunctionType *FTy; 1129784f21121a6c9418ebd86baa6814e36e1176c410John McCall if (isa<llvm::FunctionType>(Ty)) { 1130784f21121a6c9418ebd86baa6814e36e1176c410John McCall FTy = cast<llvm::FunctionType>(Ty); 1131784f21121a6c9418ebd86baa6814e36e1176c410John McCall } else { 11320774cb84719f2aea3016493a2bbd9a02aa3e0541John McCall FTy = llvm::FunctionType::get(VoidTy, false); 1133654ad40f27d684e8f3eddbc990247a6dbea5ddedEli Friedman IsIncompleteFunction = true; 1134654ad40f27d684e8f3eddbc990247a6dbea5ddedEli Friedman } 1135bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner 1136784f21121a6c9418ebd86baa6814e36e1176c410John McCall llvm::Function *F = llvm::Function::Create(FTy, 1137654ad40f27d684e8f3eddbc990247a6dbea5ddedEli Friedman llvm::Function::ExternalLinkage, 1138f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall MangledName, &getModule()); 1139f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall assert(F->getName() == MangledName && "name was uniqued!"); 1140654ad40f27d684e8f3eddbc990247a6dbea5ddedEli Friedman if (D.getDecl()) 1141b2bcf1c176b200b36f371e189ce22f93c86cdf45Anders Carlsson SetFunctionAttributes(D, F, IsIncompleteFunction); 1142fac631052809b59c1b66f687c08a743de7fb50e9Bill Wendling if (ExtraAttrs.hasAttributes()) 114375d37b493e2282f993a19a166bd573b03a7535afBill Wendling F->addAttribute(llvm::AttrListPtr::FunctionIndex, ExtraAttrs); 1144654ad40f27d684e8f3eddbc990247a6dbea5ddedEli Friedman 114567b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // This is the first use or definition of a mangled name. If there is a 114667b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // deferred decl with this name, remember that we need to emit it at the end 114767b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // of the file. 1148f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall llvm::StringMap<GlobalDecl>::iterator DDI = DeferredDecls.find(MangledName); 114967b00520c8f5b48fad722b790d87fea6be764efeChris Lattner if (DDI != DeferredDecls.end()) { 115067b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Move the potentially referenced deferred decl to the DeferredDeclsToEmit 115167b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // list, and remove it from DeferredDecls (since we don't need it anymore). 115267b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDeclsToEmit.push_back(DDI->second); 115367b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDecls.erase(DDI); 1154bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall 1155bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall // Otherwise, there are cases we have to worry about where we're 1156bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall // using a declaration for which we must emit a definition but where 1157bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall // we might not find a top-level definition: 1158bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall // - member functions defined inline in their classes 1159bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall // - friend functions defined inline in some class 1160bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall // - special member functions with implicit definitions 1161bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall // If we ever change our AST traversal to walk into class methods, 1162bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall // this will be unnecessary. 11631faa89f9c619e4b2411fab4af7e22ee7a2bd9009Anders Carlsson // 11641faa89f9c619e4b2411fab4af7e22ee7a2bd9009Anders Carlsson // We also don't emit a definition for a function if it's going to be an entry 11651faa89f9c619e4b2411fab4af7e22ee7a2bd9009Anders Carlsson // in a vtable, unless it's already marked as used. 11664e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie } else if (getLangOpts().CPlusPlus && D.getDecl()) { 1167bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall // Look for a declaration that's lexically in a record. 1168bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall const FunctionDecl *FD = cast<FunctionDecl>(D.getDecl()); 1169b135f0f2d893121ed2cc46d4d6c5bd5ab87d872fEli Friedman FD = FD->getMostRecentDecl(); 1170bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall do { 1171bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall if (isa<CXXRecordDecl>(FD->getLexicalDeclContext())) { 11721faa89f9c619e4b2411fab4af7e22ee7a2bd9009Anders Carlsson if (FD->isImplicit() && !ForVTable) { 1173bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall assert(FD->isUsed() && "Sema didn't mark implicit function as used!"); 1174a29bf41b8f49578207ce36f6b21ff9bb7ee77babDouglas Gregor DeferredDeclsToEmit.push_back(D.getWithDecl(FD)); 1175bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall break; 117610620eb5164e31208fcbf0437cd79ae535ed0559Sean Hunt } else if (FD->doesThisDeclarationHaveABody()) { 1177a29bf41b8f49578207ce36f6b21ff9bb7ee77babDouglas Gregor DeferredDeclsToEmit.push_back(D.getWithDecl(FD)); 1178bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall break; 1179bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall } 11807b9a5aa7c0d76f577699d25ce6afe21ecccb60b7Rafael Espindola } 1181ef96ee0be5f100789f451641542a69cd719144d2Douglas Gregor FD = FD->getPreviousDecl(); 1182bfdcdc8e26097c9dbb4c40d78296f6ccc3e6684cJohn McCall } while (FD); 118367b00520c8f5b48fad722b790d87fea6be764efeChris Lattner } 11841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1185784f21121a6c9418ebd86baa6814e36e1176c410John McCall // Make sure the result is of the requested type. 1186784f21121a6c9418ebd86baa6814e36e1176c410John McCall if (!IsIncompleteFunction) { 1187784f21121a6c9418ebd86baa6814e36e1176c410John McCall assert(F->getType()->getElementType() == Ty); 1188784f21121a6c9418ebd86baa6814e36e1176c410John McCall return F; 1189784f21121a6c9418ebd86baa6814e36e1176c410John McCall } 1190784f21121a6c9418ebd86baa6814e36e1176c410John McCall 11919cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *PTy = llvm::PointerType::getUnqual(Ty); 1192784f21121a6c9418ebd86baa6814e36e1176c410John McCall return llvm::ConstantExpr::getBitCast(F, PTy); 11930558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner} 11940558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner 119574391b48b4791cded373683a3baf67314f358d50Chris Lattner/// GetAddrOfFunction - Return the address of the given function. If Ty is 119674391b48b4791cded373683a3baf67314f358d50Chris Lattner/// non-null, then this function will use the specified type if it has to 119774391b48b4791cded373683a3baf67314f358d50Chris Lattner/// create it (this occurs when we see a definition of the function). 1198b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattnerllvm::Constant *CodeGenModule::GetAddrOfFunction(GlobalDecl GD, 11992acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *Ty, 12001faa89f9c619e4b2411fab4af7e22ee7a2bd9009Anders Carlsson bool ForVTable) { 120174391b48b4791cded373683a3baf67314f358d50Chris Lattner // If there was no specific requested type, just convert it now. 120274391b48b4791cded373683a3baf67314f358d50Chris Lattner if (!Ty) 12034a6835e650ff24e19ce08a3bd347c0ad186777fdAnders Carlsson Ty = getTypes().ConvertType(cast<ValueDecl>(GD.getDecl())->getType()); 1204bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner 12055f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef MangledName = getMangledName(GD); 12061faa89f9c619e4b2411fab4af7e22ee7a2bd9009Anders Carlsson return GetOrCreateLLVMFunction(MangledName, Ty, GD, ForVTable); 120774391b48b4791cded373683a3baf67314f358d50Chris Lattner} 120877ba708819285931932ecd33691a672bb59d221aEli Friedman 120974391b48b4791cded373683a3baf67314f358d50Chris Lattner/// CreateRuntimeFunction - Create a new runtime function with the specified 121074391b48b4791cded373683a3baf67314f358d50Chris Lattner/// type and name. 121174391b48b4791cded373683a3baf67314f358d50Chris Lattnerllvm::Constant * 12122acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris LattnerCodeGenModule::CreateRuntimeFunction(llvm::FunctionType *FTy, 12135f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef Name, 1214f85e193739c953358c865005855253af4f68a497John McCall llvm::Attributes ExtraAttrs) { 1215f85e193739c953358c865005855253af4f68a497John McCall return GetOrCreateLLVMFunction(Name, FTy, GlobalDecl(), /*ForVTable=*/false, 1216f85e193739c953358c865005855253af4f68a497John McCall ExtraAttrs); 121774391b48b4791cded373683a3baf67314f358d50Chris Lattner} 1218bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 1219a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith/// isTypeConstant - Determine whether an object of this type can be emitted 1220a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith/// as a constant. 1221a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith/// 1222a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith/// If ExcludeCtor is true, the duration when the object's constructor runs 1223a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith/// will not be considered. The caller will need to verify that the object is 1224a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith/// not written to during its construction. 1225a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smithbool CodeGenModule::isTypeConstant(QualType Ty, bool ExcludeCtor) { 1226a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith if (!Ty.isConstant(Context) && !Ty->isReferenceType()) 122720e098b7e7fda6bed1d67441b56cce77cd3aa918Eli Friedman return false; 1228a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith 12294e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (Context.getLangOpts().CPlusPlus) { 1230a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith if (const CXXRecordDecl *Record 1231a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith = Context.getBaseElementType(Ty)->getAsCXXRecordDecl()) 1232a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith return ExcludeCtor && !Record->hasMutableFields() && 1233a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith Record->hasTrivialDestructor(); 123420e098b7e7fda6bed1d67441b56cce77cd3aa918Eli Friedman } 1235a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith 123620e098b7e7fda6bed1d67441b56cce77cd3aa918Eli Friedman return true; 123720e098b7e7fda6bed1d67441b56cce77cd3aa918Eli Friedman} 123820e098b7e7fda6bed1d67441b56cce77cd3aa918Eli Friedman 123974391b48b4791cded373683a3baf67314f358d50Chris Lattner/// GetOrCreateLLVMGlobal - If the specified mangled name is not in the module, 124074391b48b4791cded373683a3baf67314f358d50Chris Lattner/// create and return an llvm GlobalVariable with the specified type. If there 124174391b48b4791cded373683a3baf67314f358d50Chris Lattner/// is something in the module with the specified name, return it potentially 124274391b48b4791cded373683a3baf67314f358d50Chris Lattner/// bitcasted to the right type. 124374391b48b4791cded373683a3baf67314f358d50Chris Lattner/// 124474391b48b4791cded373683a3baf67314f358d50Chris Lattner/// If D is non-null, it specifies a decl that correspond to this. This is used 124574391b48b4791cded373683a3baf67314f358d50Chris Lattner/// to set the attributes on the global when it is first created. 1246f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCallllvm::Constant * 12475f9e272e632e951b1efe824cd16acb4d96077930Chris LattnerCodeGenModule::GetOrCreateLLVMGlobal(StringRef MangledName, 12482acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *Ty, 1249c532b502858032f377056dc8cba2fe43cba8702bRafael Espindola const VarDecl *D, 1250c532b502858032f377056dc8cba2fe43cba8702bRafael Espindola bool UnnamedAddr) { 12513c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar // Lookup the entry, lazily creating it if necessary. 1252f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall llvm::GlobalValue *Entry = GetGlobalValue(MangledName); 125399b53613ebe2c59d41030e987962c1ed101b2efeChris Lattner if (Entry) { 1254d48bcb2f4dedf8e7b654cb017968b3d7b6663a57Benjamin Kramer if (WeakRefReferences.erase(Entry)) { 12556a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola if (D && !D->hasAttr<WeakAttr>()) 12567270ee4cd4794281c09dfb6931a98bbb2581ef02Anders Carlsson Entry->setLinkage(llvm::Function::ExternalLinkage); 12576a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola } 12586a836706c40a31c716952b74785102c90fd6afa7Rafael Espindola 1259c532b502858032f377056dc8cba2fe43cba8702bRafael Espindola if (UnnamedAddr) 1260c532b502858032f377056dc8cba2fe43cba8702bRafael Espindola Entry->setUnnamedAddr(true); 1261c532b502858032f377056dc8cba2fe43cba8702bRafael Espindola 126274391b48b4791cded373683a3baf67314f358d50Chris Lattner if (Entry->getType() == Ty) 1263570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner return Entry; 12641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 126599b53613ebe2c59d41030e987962c1ed101b2efeChris Lattner // Make sure the result is of the correct type. 12663c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson return llvm::ConstantExpr::getBitCast(Entry, Ty); 126799b53613ebe2c59d41030e987962c1ed101b2efeChris Lattner } 12681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 126967b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // This is the first use or definition of a mangled name. If there is a 127067b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // deferred decl with this name, remember that we need to emit it at the end 127167b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // of the file. 1272f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall llvm::StringMap<GlobalDecl>::iterator DDI = DeferredDecls.find(MangledName); 127367b00520c8f5b48fad722b790d87fea6be764efeChris Lattner if (DDI != DeferredDecls.end()) { 127467b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Move the potentially referenced deferred decl to the DeferredDeclsToEmit 127567b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // list, and remove it from DeferredDecls (since we don't need it anymore). 127667b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDeclsToEmit.push_back(DDI->second); 127767b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDecls.erase(DDI); 127867b00520c8f5b48fad722b790d87fea6be764efeChris Lattner } 12791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12804dc34ebf2a0716bf77ba110dab6777a3fc4397ddPeter Collingbourne unsigned AddrSpace = GetGlobalVarAddressSpace(D, Ty->getAddressSpace()); 12811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalVariable *GV = 12821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump new llvm::GlobalVariable(getModule(), Ty->getElementType(), false, 128399b53613ebe2c59d41030e987962c1ed101b2efeChris Lattner llvm::GlobalValue::ExternalLinkage, 1284f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall 0, MangledName, 0, 12855e2d5dec7736f6f9292d4212dec67295909f1328Hans Wennborg llvm::GlobalVariable::NotThreadLocal, AddrSpace); 128649988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar 128799b53613ebe2c59d41030e987962c1ed101b2efeChris Lattner // Handle things which are present even on external declarations. 128874391b48b4791cded373683a3baf67314f358d50Chris Lattner if (D) { 1289f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump // FIXME: This code is overly simple and should be merged with other global 1290f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump // handling. 1291a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith GV->setConstant(isTypeConstant(D->getType(), false)); 129249988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar 1293110e8e56af30363072c140285961592b0107f789John McCall // Set linkage and visibility in case we never see a definition. 1294af14603ca61757cf4361b583b45639a04c57e651John McCall NamedDecl::LinkageInfo LV = D->getLinkageAndVisibility(); 1295af14603ca61757cf4361b583b45639a04c57e651John McCall if (LV.linkage() != ExternalLinkage) { 129615e310a3b970b64a84cb30f0005bc396b4d978cbJohn McCall // Don't set internal linkage on declarations. 1297110e8e56af30363072c140285961592b0107f789John McCall } else { 1298110e8e56af30363072c140285961592b0107f789John McCall if (D->hasAttr<DLLImportAttr>()) 1299110e8e56af30363072c140285961592b0107f789John McCall GV->setLinkage(llvm::GlobalValue::DLLImportLinkage); 13000a0d2b179085a52c10402feebeb6db8b4d96a140Douglas Gregor else if (D->hasAttr<WeakAttr>() || D->isWeakImported()) 1301110e8e56af30363072c140285961592b0107f789John McCall GV->setLinkage(llvm::GlobalValue::ExternalWeakLinkage); 1302110e8e56af30363072c140285961592b0107f789John McCall 1303af14603ca61757cf4361b583b45639a04c57e651John McCall // Set visibility on a declaration only if it's explicit. 1304af14603ca61757cf4361b583b45639a04c57e651John McCall if (LV.visibilityExplicit()) 1305af14603ca61757cf4361b583b45639a04c57e651John McCall GV->setVisibility(GetLLVMVisibility(LV.visibility())); 1306110e8e56af30363072c140285961592b0107f789John McCall } 130756ebe5082da7411fb37479e230b52735f77cff35Eli Friedman 1308de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg if (D->isThreadSpecified()) 1309de981f3ff163bc9ec69e4c5e7316e94276412993Hans Wennborg setTLSMode(GV, *D); 131074391b48b4791cded373683a3baf67314f358d50Chris Lattner } 13111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13124dc34ebf2a0716bf77ba110dab6777a3fc4397ddPeter Collingbourne if (AddrSpace != Ty->getAddressSpace()) 13134dc34ebf2a0716bf77ba110dab6777a3fc4397ddPeter Collingbourne return llvm::ConstantExpr::getBitCast(GV, Ty); 13144dc34ebf2a0716bf77ba110dab6777a3fc4397ddPeter Collingbourne else 13154dc34ebf2a0716bf77ba110dab6777a3fc4397ddPeter Collingbourne return GV; 131674391b48b4791cded373683a3baf67314f358d50Chris Lattner} 1317eda9a5ec380f172f4e0063744eb796144a125480Daniel Dunbar 1318eda9a5ec380f172f4e0063744eb796144a125480Daniel Dunbar 13193bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlssonllvm::GlobalVariable * 13205f9e272e632e951b1efe824cd16acb4d96077930Chris LattnerCodeGenModule::CreateOrReplaceCXXRuntimeVariable(StringRef Name, 13212acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *Ty, 13223bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson llvm::GlobalValue::LinkageTypes Linkage) { 13233bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson llvm::GlobalVariable *GV = getModule().getNamedGlobal(Name); 13243bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson llvm::GlobalVariable *OldGV = 0; 13253bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson 13263bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson 13273bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson if (GV) { 13283bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson // Check if the variable has the right type. 13293bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson if (GV->getType()->getElementType() == Ty) 13303bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson return GV; 13313bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson 13323bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson // Because C++ name mangling, the only way we can end up with an already 13333bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson // existing global with the same name is if it has been declared extern "C". 1334c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber assert(GV->isDeclaration() && "Declaration has wrong type!"); 13353bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson OldGV = GV; 13363bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson } 13373bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson 13383bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson // Create a new variable. 13393bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson GV = new llvm::GlobalVariable(getModule(), Ty, /*isConstant=*/true, 13403bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson Linkage, 0, Name); 13413bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson 13423bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson if (OldGV) { 13433bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson // Replace occurrences of the old variable if needed. 13443bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson GV->takeName(OldGV); 13453bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson 13463bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson if (!OldGV->use_empty()) { 13473bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson llvm::Constant *NewPtrForOldDecl = 13483bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson llvm::ConstantExpr::getBitCast(GV, OldGV->getType()); 13493bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson OldGV->replaceAllUsesWith(NewPtrForOldDecl); 13503bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson } 13513bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson 13523bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson OldGV->eraseFromParent(); 13533bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson } 13543bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson 13553bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson return GV; 13563bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson} 13573bd6202ea2d5b5f7c8229cd280a846ae3dcf2355Anders Carlsson 135874391b48b4791cded373683a3baf67314f358d50Chris Lattner/// GetAddrOfGlobalVar - Return the llvm::Constant for the address of the 135974391b48b4791cded373683a3baf67314f358d50Chris Lattner/// given global variable. If Ty is non-null and if the global doesn't exist, 13600ff258b933fe385425bf2a85429bf46376d338f1Eric Christopher/// then it will be created with the specified type instead of whatever the 136174391b48b4791cded373683a3baf67314f358d50Chris Lattner/// normal requested type would be. 136274391b48b4791cded373683a3baf67314f358d50Chris Lattnerllvm::Constant *CodeGenModule::GetAddrOfGlobalVar(const VarDecl *D, 13632acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *Ty) { 136474391b48b4791cded373683a3baf67314f358d50Chris Lattner assert(D->hasGlobalStorage() && "Not a global variable"); 136574391b48b4791cded373683a3baf67314f358d50Chris Lattner QualType ASTTy = D->getType(); 136674391b48b4791cded373683a3baf67314f358d50Chris Lattner if (Ty == 0) 136774391b48b4791cded373683a3baf67314f358d50Chris Lattner Ty = getTypes().ConvertTypeForMem(ASTTy); 13681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13692acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *PTy = 1370207f4d8543529221932af82836016a2ef066c917Peter Collingbourne llvm::PointerType::get(Ty, getContext().getTargetAddressSpace(ASTTy)); 1371f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall 13725f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef MangledName = getMangledName(D); 1373f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall return GetOrCreateLLVMGlobal(MangledName, PTy, D); 137474391b48b4791cded373683a3baf67314f358d50Chris Lattner} 13753f75c43bd77e063342bc888ac276daf64ba0ce07Daniel Dunbar 137674391b48b4791cded373683a3baf67314f358d50Chris Lattner/// CreateRuntimeVariable - Create a new runtime global variable with the 137774391b48b4791cded373683a3baf67314f358d50Chris Lattner/// specified type and name. 137874391b48b4791cded373683a3baf67314f358d50Chris Lattnerllvm::Constant * 13792acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris LattnerCodeGenModule::CreateRuntimeVariable(llvm::Type *Ty, 13805f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef Name) { 13811de4d4e8cb2e9c88809fea8092bc6e835a5473d2John McCall return GetOrCreateLLVMGlobal(Name, llvm::PointerType::getUnqual(Ty), 0, 1382c532b502858032f377056dc8cba2fe43cba8702bRafael Espindola true); 1383bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar} 1384bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 138503f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbarvoid CodeGenModule::EmitTentativeDefinition(const VarDecl *D) { 138603f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar assert(!D->getInit() && "Cannot emit definite definitions here!"); 138703f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar 13887520bd1de12af10ea08c662440565adbdf589317Douglas Gregor if (MayDeferGeneration(D)) { 13897520bd1de12af10ea08c662440565adbdf589317Douglas Gregor // If we have not seen a reference to this variable yet, place it 13907520bd1de12af10ea08c662440565adbdf589317Douglas Gregor // into the deferred declarations table to be emitted if needed 13917520bd1de12af10ea08c662440565adbdf589317Douglas Gregor // later. 13925f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef MangledName = getMangledName(D); 1393f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall if (!GetGlobalValue(MangledName)) { 1394555b4bb2749aea2ec8e2adc351a71ec1cb9bdc33Anders Carlsson DeferredDecls[MangledName] = D; 139503f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar return; 13967520bd1de12af10ea08c662440565adbdf589317Douglas Gregor } 13977520bd1de12af10ea08c662440565adbdf589317Douglas Gregor } 13987520bd1de12af10ea08c662440565adbdf589317Douglas Gregor 13997520bd1de12af10ea08c662440565adbdf589317Douglas Gregor // The tentative definition is the only definition. 140003f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar EmitGlobalVarDefinition(D); 140103f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar} 140203f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar 14036fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregorvoid CodeGenModule::EmitVTable(CXXRecordDecl *Class, bool DefinitionRequired) { 14046fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor if (DefinitionRequired) 14059ee494f98610dcd79441dce469d7bf609fcd7b92Charles Davis getCXXABI().EmitVTables(Class); 14066fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor} 14076fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor 14084b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregorllvm::GlobalVariable::LinkageTypes 1409046c294a43024874ff35656c6e785b64e72f1f36Anders CarlssonCodeGenModule::getVTableLinkage(const CXXRecordDecl *RD) { 1410cb5d2d0647fdab2e36c85b417e03bf18916ce10cEli Friedman if (RD->getLinkage() != ExternalLinkage) 1411dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor return llvm::GlobalVariable::InternalLinkage; 1412dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor 1413dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor if (const CXXMethodDecl *KeyFunction 1414dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor = RD->getASTContext().getKeyFunction(RD)) { 1415dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor // If this class has a key function, use that to determine the linkage of 1416dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor // the vtable. 14174b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor const FunctionDecl *Def = 0; 141806a54a38be5054c910ffc92db60edab23f9ea105Argyrios Kyrtzidis if (KeyFunction->hasBody(Def)) 14194b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor KeyFunction = cast<CXXMethodDecl>(Def); 1420dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor 14214b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor switch (KeyFunction->getTemplateSpecializationKind()) { 14224b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor case TSK_Undeclared: 14234b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor case TSK_ExplicitSpecialization: 14246d7f8473cd6e967b3676948894ce72472102f9cbAnders Carlsson // When compiling with optimizations turned on, we emit all vtables, 14256d7f8473cd6e967b3676948894ce72472102f9cbAnders Carlsson // even if the key function is not defined in the current translation 14266d7f8473cd6e967b3676948894ce72472102f9cbAnders Carlsson // unit. If this is the case, use available_externally linkage. 14276d7f8473cd6e967b3676948894ce72472102f9cbAnders Carlsson if (!Def && CodeGenOpts.OptimizationLevel) 14286d7f8473cd6e967b3676948894ce72472102f9cbAnders Carlsson return llvm::GlobalVariable::AvailableExternallyLinkage; 14296d7f8473cd6e967b3676948894ce72472102f9cbAnders Carlsson 14304b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor if (KeyFunction->isInlined()) 14314e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return !Context.getLangOpts().AppleKext ? 1432142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian llvm::GlobalVariable::LinkOnceODRLinkage : 1433142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian llvm::Function::InternalLinkage; 14344b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor 14354b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor return llvm::GlobalVariable::ExternalLinkage; 14364b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor 14374b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor case TSK_ImplicitInstantiation: 14384e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return !Context.getLangOpts().AppleKext ? 1439142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian llvm::GlobalVariable::LinkOnceODRLinkage : 1440142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian llvm::Function::InternalLinkage; 1441f502d93b0ea970bfbd897e657f8d940a20984de2Anders Carlsson 14424b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor case TSK_ExplicitInstantiationDefinition: 14434e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return !Context.getLangOpts().AppleKext ? 1444142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian llvm::GlobalVariable::WeakODRLinkage : 1445142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian llvm::Function::InternalLinkage; 1446f502d93b0ea970bfbd897e657f8d940a20984de2Anders Carlsson 14474b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor case TSK_ExplicitInstantiationDeclaration: 14484b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor // FIXME: Use available_externally linkage. However, this currently 14494b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor // breaks LLVM's build due to undefined symbols. 14504b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor // return llvm::GlobalVariable::AvailableExternallyLinkage; 14514e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return !Context.getLangOpts().AppleKext ? 1452142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian llvm::GlobalVariable::LinkOnceODRLinkage : 1453142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian llvm::Function::InternalLinkage; 14544b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor } 1455dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor } 1456dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor 14574e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (Context.getLangOpts().AppleKext) 145853bad4e98ed5e765df4231099bf1c737582908bfFariborz Jahanian return llvm::Function::InternalLinkage; 145953bad4e98ed5e765df4231099bf1c737582908bfFariborz Jahanian 1460dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor switch (RD->getTemplateSpecializationKind()) { 1461dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor case TSK_Undeclared: 1462dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor case TSK_ExplicitSpecialization: 1463dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor case TSK_ImplicitInstantiation: 1464dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor // FIXME: Use available_externally linkage. However, this currently 1465dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor // breaks LLVM's build due to undefined symbols. 1466dffb8010a130733f1b55acf0af01deb0a2e083d3Douglas Gregor // return llvm::GlobalVariable::AvailableExternallyLinkage; 1467142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian case TSK_ExplicitInstantiationDeclaration: 146853bad4e98ed5e765df4231099bf1c737582908bfFariborz Jahanian return llvm::GlobalVariable::LinkOnceODRLinkage; 1469142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian 1470142f9e99018a85105cee570133c111a52f2053ecFariborz Jahanian case TSK_ExplicitInstantiationDefinition: 147153bad4e98ed5e765df4231099bf1c737582908bfFariborz Jahanian return llvm::GlobalVariable::WeakODRLinkage; 14724b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor } 14733026348bd4c13a0f83b59839f64065e0fcbea253David Blaikie 14743026348bd4c13a0f83b59839f64065e0fcbea253David Blaikie llvm_unreachable("Invalid TemplateSpecializationKind!"); 14754b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor} 14764b0f21c0f8bed0e2a7dc62d73be64e7e277d6c9aDouglas Gregor 14772acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris LattnerCharUnits CodeGenModule::GetTargetTypeStoreSize(llvm::Type *Ty) const { 147806f486ecd05bd6788da97c39164c1903a084c26dKen Dyck return Context.toCharUnitsFromBits( 147925a6a84cf5067b32c271e3ba078676dee838798dMicah Villmow TheDataLayout.getTypeStoreSizeInBits(Ty)); 1480687cc4a850b59116efee061018f0d8df50728b82Ken Dyck} 1481687cc4a850b59116efee061018f0d8df50728b82Ken Dyck 148219b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redlllvm::Constant * 148319b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian RedlCodeGenModule::MaybeEmitGlobalStdInitializerListInitializer(const VarDecl *D, 148419b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl const Expr *rawInit) { 148519b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl ArrayRef<ExprWithCleanups::CleanupObject> cleanups; 148619b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl if (const ExprWithCleanups *withCleanups = 148719b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl dyn_cast<ExprWithCleanups>(rawInit)) { 148819b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl cleanups = withCleanups->getObjects(); 148919b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl rawInit = withCleanups->getSubExpr(); 149019b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl } 149119b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 149219b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl const InitListExpr *init = dyn_cast<InitListExpr>(rawInit); 149319b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl if (!init || !init->initializesStdInitializerList() || 149419b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl init->getNumInits() == 0) 149519b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl return 0; 149619b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 149719b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl ASTContext &ctx = getContext(); 149819b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl unsigned numInits = init->getNumInits(); 1499062a82cdfab01d95f7fa3d759342e6f2ee5c51b0Sebastian Redl // FIXME: This check is here because we would otherwise silently miscompile 1500062a82cdfab01d95f7fa3d759342e6f2ee5c51b0Sebastian Redl // nested global std::initializer_lists. Better would be to have a real 1501062a82cdfab01d95f7fa3d759342e6f2ee5c51b0Sebastian Redl // implementation. 1502062a82cdfab01d95f7fa3d759342e6f2ee5c51b0Sebastian Redl for (unsigned i = 0; i < numInits; ++i) { 1503062a82cdfab01d95f7fa3d759342e6f2ee5c51b0Sebastian Redl const InitListExpr *inner = dyn_cast<InitListExpr>(init->getInit(i)); 1504062a82cdfab01d95f7fa3d759342e6f2ee5c51b0Sebastian Redl if (inner && inner->initializesStdInitializerList()) { 1505062a82cdfab01d95f7fa3d759342e6f2ee5c51b0Sebastian Redl ErrorUnsupported(inner, "nested global std::initializer_list"); 1506062a82cdfab01d95f7fa3d759342e6f2ee5c51b0Sebastian Redl return 0; 1507062a82cdfab01d95f7fa3d759342e6f2ee5c51b0Sebastian Redl } 1508062a82cdfab01d95f7fa3d759342e6f2ee5c51b0Sebastian Redl } 1509062a82cdfab01d95f7fa3d759342e6f2ee5c51b0Sebastian Redl 1510062a82cdfab01d95f7fa3d759342e6f2ee5c51b0Sebastian Redl // Synthesize a fake VarDecl for the array and initialize that. 151119b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl QualType elementType = init->getInit(0)->getType(); 151219b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl llvm::APInt numElements(ctx.getTypeSize(ctx.getSizeType()), numInits); 151319b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl QualType arrayType = ctx.getConstantArrayType(elementType, numElements, 151419b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl ArrayType::Normal, 0); 151519b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 151619b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl IdentifierInfo *name = &ctx.Idents.get(D->getNameAsString() + "__initlist"); 151719b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl TypeSourceInfo *sourceInfo = ctx.getTrivialTypeSourceInfo( 151819b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl arrayType, D->getLocation()); 151919b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl VarDecl *backingArray = VarDecl::Create(ctx, const_cast<DeclContext*>( 152019b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl D->getDeclContext()), 152119b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl D->getLocStart(), D->getLocation(), 152219b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl name, arrayType, sourceInfo, 152319b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl SC_Static, SC_Static); 152419b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 152519b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // Now clone the InitListExpr to initialize the array instead. 152619b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // Incredible hack: we want to use the existing InitListExpr here, so we need 152719b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // to tell it that it no longer initializes a std::initializer_list. 15283b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer ArrayRef<Expr*> Inits(const_cast<InitListExpr*>(init)->getInits(), 15293b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer init->getNumInits()); 15303b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer Expr *arrayInit = new (ctx) InitListExpr(ctx, init->getLBraceLoc(), Inits, 15313b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer init->getRBraceLoc()); 153219b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl arrayInit->setType(arrayType); 153319b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 153419b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl if (!cleanups.empty()) 153519b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl arrayInit = ExprWithCleanups::Create(ctx, arrayInit, cleanups); 153619b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 153719b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl backingArray->setInit(arrayInit); 153819b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 153919b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // Emit the definition of the array. 154019b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl EmitGlobalVarDefinition(backingArray); 154119b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 154219b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // Inspect the initializer list to validate it and determine its type. 154319b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // FIXME: doing this every time is probably inefficient; caching would be nice 154419b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl RecordDecl *record = init->getType()->castAs<RecordType>()->getDecl(); 154519b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl RecordDecl::field_iterator field = record->field_begin(); 154619b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl if (field == record->field_end()) { 154719b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl ErrorUnsupported(D, "weird std::initializer_list"); 154819b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl return 0; 154919b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl } 155019b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl QualType elementPtr = ctx.getPointerType(elementType.withConst()); 155119b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // Start pointer. 155219b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl if (!ctx.hasSameType(field->getType(), elementPtr)) { 155319b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl ErrorUnsupported(D, "weird std::initializer_list"); 155419b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl return 0; 155519b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl } 155619b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl ++field; 155719b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl if (field == record->field_end()) { 155819b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl ErrorUnsupported(D, "weird std::initializer_list"); 155919b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl return 0; 156019b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl } 156119b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl bool isStartEnd = false; 156219b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl if (ctx.hasSameType(field->getType(), elementPtr)) { 156319b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // End pointer. 156419b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl isStartEnd = true; 156519b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl } else if(!ctx.hasSameType(field->getType(), ctx.getSizeType())) { 156619b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl ErrorUnsupported(D, "weird std::initializer_list"); 156719b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl return 0; 156819b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl } 156919b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 157019b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // Now build an APValue representing the std::initializer_list. 157119b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl APValue initListValue(APValue::UninitStruct(), 0, 2); 157219b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl APValue &startField = initListValue.getStructField(0); 157319b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl APValue::LValuePathEntry startOffsetPathEntry; 157419b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl startOffsetPathEntry.ArrayIndex = 0; 157519b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl startField = APValue(APValue::LValueBase(backingArray), 157619b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl CharUnits::fromQuantity(0), 157719b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl llvm::makeArrayRef(startOffsetPathEntry), 157819b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl /*IsOnePastTheEnd=*/false, 0); 157919b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 158019b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl if (isStartEnd) { 158119b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl APValue &endField = initListValue.getStructField(1); 158219b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl APValue::LValuePathEntry endOffsetPathEntry; 158319b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl endOffsetPathEntry.ArrayIndex = numInits; 158419b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl endField = APValue(APValue::LValueBase(backingArray), 158519b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl ctx.getTypeSizeInChars(elementType) * numInits, 158619b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl llvm::makeArrayRef(endOffsetPathEntry), 158719b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl /*IsOnePastTheEnd=*/true, 0); 158819b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl } else { 158919b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl APValue &sizeField = initListValue.getStructField(1); 159019b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl sizeField = APValue(llvm::APSInt(numElements)); 159119b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl } 159219b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 159319b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // Emit the constant for the initializer_list. 1594a3ca41f0c2bd1c4a752df88b283332f3b757d21eRichard Smith llvm::Constant *llvmInit = 1595a3ca41f0c2bd1c4a752df88b283332f3b757d21eRichard Smith EmitConstantValueForMemory(initListValue, D->getType()); 159619b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl assert(llvmInit && "failed to initialize as constant"); 159719b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl return llvmInit; 159819b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl} 159919b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 16004dc34ebf2a0716bf77ba110dab6777a3fc4397ddPeter Collingbourneunsigned CodeGenModule::GetGlobalVarAddressSpace(const VarDecl *D, 16014dc34ebf2a0716bf77ba110dab6777a3fc4397ddPeter Collingbourne unsigned AddrSpace) { 16024dc34ebf2a0716bf77ba110dab6777a3fc4397ddPeter Collingbourne if (LangOpts.CUDA && CodeGenOpts.CUDAIsDevice) { 16034dc34ebf2a0716bf77ba110dab6777a3fc4397ddPeter Collingbourne if (D->hasAttr<CUDAConstantAttr>()) 16044dc34ebf2a0716bf77ba110dab6777a3fc4397ddPeter Collingbourne AddrSpace = getContext().getTargetAddressSpace(LangAS::cuda_constant); 16054dc34ebf2a0716bf77ba110dab6777a3fc4397ddPeter Collingbourne else if (D->hasAttr<CUDASharedAttr>()) 16064dc34ebf2a0716bf77ba110dab6777a3fc4397ddPeter Collingbourne AddrSpace = getContext().getTargetAddressSpace(LangAS::cuda_shared); 16074dc34ebf2a0716bf77ba110dab6777a3fc4397ddPeter Collingbourne else 16084dc34ebf2a0716bf77ba110dab6777a3fc4397ddPeter Collingbourne AddrSpace = getContext().getTargetAddressSpace(LangAS::cuda_device); 16094dc34ebf2a0716bf77ba110dab6777a3fc4397ddPeter Collingbourne } 16104dc34ebf2a0716bf77ba110dab6777a3fc4397ddPeter Collingbourne 16114dc34ebf2a0716bf77ba110dab6777a3fc4397ddPeter Collingbourne return AddrSpace; 16124dc34ebf2a0716bf77ba110dab6777a3fc4397ddPeter Collingbourne} 16134dc34ebf2a0716bf77ba110dab6777a3fc4397ddPeter Collingbourne 1614bd012ff1fa088181646a784f385b28867372d434Daniel Dunbarvoid CodeGenModule::EmitGlobalVarDefinition(const VarDecl *D) { 16158f32f7189b12f67aa4a19bc7c3855b599980eca0Chris Lattner llvm::Constant *Init = 0; 161677ba708819285931932ecd33691a672bb59d221aEli Friedman QualType ASTTy = D->getType(); 16177ca4850a3e3530fa6c93b64b740446e32c97f992Richard Smith CXXRecordDecl *RD = ASTTy->getBaseElementTypeUnsafe()->getAsCXXRecordDecl(); 16187ca4850a3e3530fa6c93b64b740446e32c97f992Richard Smith bool NeedsGlobalCtor = false; 16197ca4850a3e3530fa6c93b64b740446e32c97f992Richard Smith bool NeedsGlobalDtor = RD && !RD->hasTrivialDestructor(); 16201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16212d6a5670465cb3f1d811695a9f23e372508240d2Richard Smith const VarDecl *InitDecl; 16222d6a5670465cb3f1d811695a9f23e372508240d2Richard Smith const Expr *InitExpr = D->getAnyInitializer(InitDecl); 162319b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 16243bb92693c3332c1e99870a4e45afff3892e1c6aeAnders Carlsson if (!InitExpr) { 1625cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman // This is a tentative definition; tentative definitions are 162603f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // implicitly initialized with { 0 }. 162703f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // 162803f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // Note that tentative definitions are only emitted at the end of 162903f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // a translation unit, so they should never have incomplete 163003f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // type. In addition, EmitTentativeDefinition makes sure that we 163103f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // never attempt to emit a tentative definition if a real one 163203f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // exists. A use may still exists, however, so we still may need 163303f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // to do a RAUW. 163403f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar assert(!ASTTy->isIncompleteType() && "Unexpected incomplete type"); 1635b0d0ea042116c1f451d3db8ceff9f1dd92bc36d2Anders Carlsson Init = EmitNullConstant(D->getType()); 163677ba708819285931932ecd33691a672bb59d221aEli Friedman } else { 163719b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // If this is a std::initializer_list, emit the special initializer. 163819b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl Init = MaybeEmitGlobalStdInitializerListInitializer(D, InitExpr); 163919b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // An empty init list will perform zero-initialization, which happens 164019b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // to be exactly what we want. 164119b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // FIXME: It does so in a global constructor, which is *not* what we 164219b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl // want. 164319b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl 16444904bf4e84cfb48080270ebaa9005327f18ab0e5Fariborz Jahanian if (!Init) { 16454904bf4e84cfb48080270ebaa9005327f18ab0e5Fariborz Jahanian initializedGlobalDecl = GlobalDecl(D); 164619b1a6eb2c90fab7cefe74bea5b6de490b65ac9dSebastian Redl Init = EmitConstantInit(*InitDecl); 16474904bf4e84cfb48080270ebaa9005327f18ab0e5Fariborz Jahanian } 16486e656f45ae04b415ba7a4c0c25e55633e2d0ecd0Eli Friedman if (!Init) { 16493bb92693c3332c1e99870a4e45afff3892e1c6aeAnders Carlsson QualType T = InitExpr->getType(); 1650c446d1816f46a4b6d2337102dfc001f55fc18211Douglas Gregor if (D->getType()->isReferenceType()) 1651c446d1816f46a4b6d2337102dfc001f55fc18211Douglas Gregor T = D->getType(); 16522d6a5670465cb3f1d811695a9f23e372508240d2Richard Smith 16534e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().CPlusPlus) { 165489ed31d3f9eeb8ec77c284a5cf404a74bf5e7acfAnders Carlsson Init = EmitNullConstant(T); 16557ca4850a3e3530fa6c93b64b740446e32c97f992Richard Smith NeedsGlobalCtor = true; 165689ed31d3f9eeb8ec77c284a5cf404a74bf5e7acfAnders Carlsson } else { 165789ed31d3f9eeb8ec77c284a5cf404a74bf5e7acfAnders Carlsson ErrorUnsupported(D, "static initializer"); 165889ed31d3f9eeb8ec77c284a5cf404a74bf5e7acfAnders Carlsson Init = llvm::UndefValue::get(getTypes().ConvertType(T)); 165989ed31d3f9eeb8ec77c284a5cf404a74bf5e7acfAnders Carlsson } 1660bf40cb518312dde1c07e44fcae59bc4eec65589cJohn McCall } else { 1661bf40cb518312dde1c07e44fcae59bc4eec65589cJohn McCall // We don't need an initializer, so remove the entry for the delayed 16627ca4850a3e3530fa6c93b64b740446e32c97f992Richard Smith // initializer position (just in case this entry was delayed) if we 16637ca4850a3e3530fa6c93b64b740446e32c97f992Richard Smith // also don't need to register a destructor. 16644e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().CPlusPlus && !NeedsGlobalDtor) 1665bf40cb518312dde1c07e44fcae59bc4eec65589cJohn McCall DelayedCXXInitPosition.erase(D); 16666e656f45ae04b415ba7a4c0c25e55633e2d0ecd0Eli Friedman } 16678f32f7189b12f67aa4a19bc7c3855b599980eca0Chris Lattner } 16688e53e720b3d7c962e91138a130dbd5d6c2def0e5Devang Patel 16692acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type* InitType = Init->getType(); 1670570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner llvm::Constant *Entry = GetAddrOfGlobalVar(D, InitType); 16711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1672570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // Strip off a bitcast if we got one back. 1673570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner if (llvm::ConstantExpr *CE = dyn_cast<llvm::ConstantExpr>(Entry)) { 16749d4a15fd3b85434c43ea27562793de63a793321aChris Lattner assert(CE->getOpcode() == llvm::Instruction::BitCast || 16759d4a15fd3b85434c43ea27562793de63a793321aChris Lattner // all zero index gep. 16769d4a15fd3b85434c43ea27562793de63a793321aChris Lattner CE->getOpcode() == llvm::Instruction::GetElementPtr); 1677570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner Entry = CE->getOperand(0); 1678570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner } 16791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1680570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // Entry is now either a Function or GlobalVariable. 1681570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner llvm::GlobalVariable *GV = dyn_cast<llvm::GlobalVariable>(Entry); 16821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1683570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // We have a definition after a declaration with the wrong type. 1684570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // We must make a new GlobalVariable* and update everything that used OldGV 1685570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // (a declaration or tentative definition) with the new GlobalVariable* 1686570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // (which will be a definition). 1687570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // 1688570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // This happens if there is a prototype for a global (e.g. 1689570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // "extern int x[];") and then a definition of a different type (e.g. 1690570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // "int x[10];"). This also happens when an initializer has a different type 1691570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // from the type of the global (this happens with unions). 1692570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner if (GV == 0 || 1693570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner GV->getType()->getElementType() != InitType || 1694207f4d8543529221932af82836016a2ef066c917Peter Collingbourne GV->getType()->getAddressSpace() != 16954dc34ebf2a0716bf77ba110dab6777a3fc4397ddPeter Collingbourne GetGlobalVarAddressSpace(D, getContext().getTargetAddressSpace(ASTTy))) { 16961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1697f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall // Move the old entry aside so that we'll create a new one. 16985f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner Entry->setName(StringRef()); 1699232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar 1700570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // Make a new global with the correct type, this is now guaranteed to work. 1701570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner GV = cast<llvm::GlobalVariable>(GetAddrOfGlobalVar(D, InitType)); 17020558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner 170377ba708819285931932ecd33691a672bb59d221aEli Friedman // Replace all uses of the old global with the new global 17041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Constant *NewPtrForOldDecl = 17053c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(GV, Entry->getType()); 1706570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner Entry->replaceAllUsesWith(NewPtrForOldDecl); 170777ba708819285931932ecd33691a672bb59d221aEli Friedman 170877ba708819285931932ecd33691a672bb59d221aEli Friedman // Erase the old global, since it is no longer used. 1709570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner cast<llvm::GlobalValue>(Entry)->eraseFromParent(); 171077ba708819285931932ecd33691a672bb59d221aEli Friedman } 171177ba708819285931932ecd33691a672bb59d221aEli Friedman 171277f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge if (D->hasAttr<AnnotateAttr>()) 171377f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge AddGlobalAnnotations(D, GV); 17148bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman 171588a69ad80e1550e9932666e6efa050a5b1223889Chris Lattner GV->setInitializer(Init); 1716e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner 1717e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner // If it is safe to mark the global 'constant', do so now. 1718a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith GV->setConstant(!NeedsGlobalCtor && !NeedsGlobalDtor && 1719a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith isTypeConstant(D->getType(), true)); 17201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17218b752f10c394b140f9ef89e049cbad1a7676fc25Ken Dyck GV->setAlignment(getContext().getDeclAlign(D).getQuantity()); 1722a9b21d22bb9337649723a8477b5cb15f83451e7dRichard Smith 172388a69ad80e1550e9932666e6efa050a5b1223889Chris Lattner // Set the llvm linkage type as appropriate. 1724354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian llvm::GlobalValue::LinkageTypes Linkage = 1725354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian GetLLVMLinkageVarDefinition(D, GV); 1726354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian GV->setLinkage(Linkage); 1727354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian if (Linkage == llvm::GlobalVariable::CommonLinkage) 1728354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian // common vars aren't constant even if declared const. 1729354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian GV->setConstant(false); 1730354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian 1731354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian SetCommonAttributes(D, GV); 1732354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian 17333030eb82593097502469a8b3fc26112c79c75605John McCall // Emit the initializer function if necessary. 17347ca4850a3e3530fa6c93b64b740446e32c97f992Richard Smith if (NeedsGlobalCtor || NeedsGlobalDtor) 17357ca4850a3e3530fa6c93b64b740446e32c97f992Richard Smith EmitCXXGlobalVarDeclInitFunc(D, GV, NeedsGlobalCtor); 17363030eb82593097502469a8b3fc26112c79c75605John McCall 173705c5ebc9bafe5613204eefb59a47ab878e4fbd0bKostya Serebryany // If we are compiling with ASan, add metadata indicating dynamically 173805c5ebc9bafe5613204eefb59a47ab878e4fbd0bKostya Serebryany // initialized globals. 173905c5ebc9bafe5613204eefb59a47ab878e4fbd0bKostya Serebryany if (LangOpts.AddressSanitizer && NeedsGlobalCtor) { 174005c5ebc9bafe5613204eefb59a47ab878e4fbd0bKostya Serebryany llvm::Module &M = getModule(); 174105c5ebc9bafe5613204eefb59a47ab878e4fbd0bKostya Serebryany 174205c5ebc9bafe5613204eefb59a47ab878e4fbd0bKostya Serebryany llvm::NamedMDNode *DynamicInitializers = 174305c5ebc9bafe5613204eefb59a47ab878e4fbd0bKostya Serebryany M.getOrInsertNamedMetadata("llvm.asan.dynamically_initialized_globals"); 174405c5ebc9bafe5613204eefb59a47ab878e4fbd0bKostya Serebryany llvm::Value *GlobalToAdd[] = { GV }; 174505c5ebc9bafe5613204eefb59a47ab878e4fbd0bKostya Serebryany llvm::MDNode *ThisGlobal = llvm::MDNode::get(VMContext, GlobalToAdd); 174605c5ebc9bafe5613204eefb59a47ab878e4fbd0bKostya Serebryany DynamicInitializers->addOperand(ThisGlobal); 174705c5ebc9bafe5613204eefb59a47ab878e4fbd0bKostya Serebryany } 174805c5ebc9bafe5613204eefb59a47ab878e4fbd0bKostya Serebryany 1749354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian // Emit global variable debug information. 175073fb35003aad027492e661a3749e921b5d1ecaf9Eric Christopher if (CGDebugInfo *DI = getModuleDebugInfo()) 17514cdad3151bfb2075c6bdbfe89fbb08f31a90a45bDouglas Gregor if (getCodeGenOpts().getDebugInfo() >= CodeGenOptions::LimitedDebugInfo) 1752fd00eecad6fa5400cf37269d84361a0551d0e6d3Alexey Samsonov DI->EmitGlobalVariable(GV, D); 1753354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian} 1754354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian 1755354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanianllvm::GlobalValue::LinkageTypes 1756354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz JahanianCodeGenModule::GetLLVMLinkageVarDefinition(const VarDecl *D, 1757354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian llvm::GlobalVariable *GV) { 175890e99a84ddd020e8fda79643748243725a2ed071Argyrios Kyrtzidis GVALinkage Linkage = getContext().GetGVALinkageForVariable(D); 1759a0f00a71fcb0f98298709d5e5318339acf7958acDouglas Gregor if (Linkage == GVA_Internal) 1760354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian return llvm::Function::InternalLinkage; 176140b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis else if (D->hasAttr<DLLImportAttr>()) 1762354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian return llvm::Function::DLLImportLinkage; 176340b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis else if (D->hasAttr<DLLExportAttr>()) 1764354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian return llvm::Function::DLLExportLinkage; 1765e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner else if (D->hasAttr<WeakAttr>()) { 1766e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner if (GV->isConstant()) 1767354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian return llvm::GlobalVariable::WeakODRLinkage; 1768e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner else 1769354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian return llvm::GlobalVariable::WeakAnyLinkage; 17708f51a4f2d00b0abda3cde7f3828fb2e2b9beafb5Douglas Gregor } else if (Linkage == GVA_TemplateInstantiation || 17718f51a4f2d00b0abda3cde7f3828fb2e2b9beafb5Douglas Gregor Linkage == GVA_ExplicitTemplateInstantiation) 177299ace16bc6962f1fc3dc45bbbdf2eb74e555a8adJohn McCall return llvm::GlobalVariable::WeakODRLinkage; 17734e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie else if (!getLangOpts().CPlusPlus && 1774a6cf1e709b96865210b81bd611d41e9a2d41500aEric Christopher ((!CodeGenOpts.NoCommon && !D->getAttr<NoCommonAttr>()) || 1775a6cf1e709b96865210b81bd611d41e9a2d41500aEric Christopher D->getAttr<CommonAttr>()) && 1776309457d0f1b416c1b379c9f3e172848adffedb23Chris Lattner !D->hasExternalStorage() && !D->getInit() && 1777ab27d6ea7b4ce2762a16905281de796db32bb6f2Fariborz Jahanian !D->getAttr<SectionAttr>() && !D->isThreadSpecified() && 1778ab27d6ea7b4ce2762a16905281de796db32bb6f2Fariborz Jahanian !D->getAttr<WeakImportAttr>()) { 177991f31dc234bbc98f3dd20e6741a7b0b98c7916bfEric Christopher // Thread local vars aren't considered common linkage. 1780354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian return llvm::GlobalVariable::CommonLinkage; 1781686226b538e72c5059ab7c9a8f87eb883193b645Sanjiv Gupta } 1782354e712c81fbb07c0ce5f06180788b25fffa1b56Fariborz Jahanian return llvm::GlobalVariable::ExternalLinkage; 178388a69ad80e1550e9932666e6efa050a5b1223889Chris Lattner} 17845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1785bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// ReplaceUsesOfNonProtoTypeWithRealFunction - This function is called when we 1786bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// implement a function with no prototype, e.g. "int foo() {}". If there are 1787bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// existing call uses of the old function in the module, this adjusts them to 1788bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// call the new function directly. 1789bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// 1790bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// This is not just a cleanup: the always_inline pass requires direct calls to 1791bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// functions to be able to inline them. If there is a bitcast in the way, it 1792bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// won't inline them. Instcombine normally deletes these calls, but it isn't 1793bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// run at -O0. 1794bdb0132722082886558f31eccdba06ae1852c0eeChris Lattnerstatic void ReplaceUsesOfNonProtoTypeWithRealFunction(llvm::GlobalValue *Old, 1795bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner llvm::Function *NewFn) { 1796bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // If we're redefining a global as a function, don't transform it. 1797bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner llvm::Function *OldFn = dyn_cast<llvm::Function>(Old); 1798bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner if (OldFn == 0) return; 17991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18002acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *NewRetTy = NewFn->getReturnType(); 18015f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Value*, 4> ArgList; 1802bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner 1803bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner for (llvm::Value::use_iterator UI = OldFn->use_begin(), E = OldFn->use_end(); 1804dbf02bccc9fc1115cb7dd45c84df77252d68f220Benjamin Kramer UI != E; ) { 1805bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // TODO: Do invokes ever occur in C code? If so, we should handle them too. 1806dbf02bccc9fc1115cb7dd45c84df77252d68f220Benjamin Kramer llvm::Value::use_iterator I = UI++; // Increment before the CI is erased. 1807dbf02bccc9fc1115cb7dd45c84df77252d68f220Benjamin Kramer llvm::CallInst *CI = dyn_cast<llvm::CallInst>(*I); 18088670cd3ea4dfbf86caacd270ec2441e9949bbb6aGabor Greif if (!CI) continue; // FIXME: when we allow Invoke, just do CallSite CS(*I) 180935db3b9aad1829a1279b9e213ddee36395314a0bGabor Greif llvm::CallSite CS(CI); 1810dbf02bccc9fc1115cb7dd45c84df77252d68f220Benjamin Kramer if (!CI || !CS.isCallee(I)) continue; 18111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1812bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // If the return types don't match exactly, and if the call isn't dead, then 1813bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // we can't transform this call. 1814bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner if (CI->getType() != NewRetTy && !CI->use_empty()) 1815bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner continue; 1816bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner 181740f9c302f23a35611cd354f40b22b37f2c554a40John McCall // Get the attribute list. 181840f9c302f23a35611cd354f40b22b37f2c554a40John McCall llvm::SmallVector<llvm::AttributeWithIndex, 8> AttrVec; 181940f9c302f23a35611cd354f40b22b37f2c554a40John McCall llvm::AttrListPtr AttrList = CI->getAttributes(); 182040f9c302f23a35611cd354f40b22b37f2c554a40John McCall 182140f9c302f23a35611cd354f40b22b37f2c554a40John McCall // Get any return attributes. 182240f9c302f23a35611cd354f40b22b37f2c554a40John McCall llvm::Attributes RAttrs = AttrList.getRetAttributes(); 182340f9c302f23a35611cd354f40b22b37f2c554a40John McCall 182440f9c302f23a35611cd354f40b22b37f2c554a40John McCall // Add the return attributes. 18254d68ed5f03ad1235946377eb32b5c4d0412f2e48Bill Wendling if (RAttrs.hasAttributes()) 182675d37b493e2282f993a19a166bd573b03a7535afBill Wendling AttrVec.push_back(llvm:: 182775d37b493e2282f993a19a166bd573b03a7535afBill Wendling AttributeWithIndex::get(llvm::AttrListPtr::ReturnIndex, 182875d37b493e2282f993a19a166bd573b03a7535afBill Wendling RAttrs)); 182940f9c302f23a35611cd354f40b22b37f2c554a40John McCall 1830bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // If the function was passed too few arguments, don't transform. If extra 1831bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // arguments were passed, we silently drop them. If any of the types 1832bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // mismatch, we don't transform. 1833bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner unsigned ArgNo = 0; 1834bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner bool DontTransform = false; 1835bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner for (llvm::Function::arg_iterator AI = NewFn->arg_begin(), 1836bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner E = NewFn->arg_end(); AI != E; ++AI, ++ArgNo) { 183735db3b9aad1829a1279b9e213ddee36395314a0bGabor Greif if (CS.arg_size() == ArgNo || 183835db3b9aad1829a1279b9e213ddee36395314a0bGabor Greif CS.getArgument(ArgNo)->getType() != AI->getType()) { 1839bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner DontTransform = true; 1840bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner break; 1841bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner } 184240f9c302f23a35611cd354f40b22b37f2c554a40John McCall 184340f9c302f23a35611cd354f40b22b37f2c554a40John McCall // Add any parameter attributes. 18444d68ed5f03ad1235946377eb32b5c4d0412f2e48Bill Wendling llvm::Attributes PAttrs = AttrList.getParamAttributes(ArgNo + 1); 18454d68ed5f03ad1235946377eb32b5c4d0412f2e48Bill Wendling if (PAttrs.hasAttributes()) 184640f9c302f23a35611cd354f40b22b37f2c554a40John McCall AttrVec.push_back(llvm::AttributeWithIndex::get(ArgNo + 1, PAttrs)); 1847bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner } 1848bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner if (DontTransform) 1849bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner continue; 18501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18514d68ed5f03ad1235946377eb32b5c4d0412f2e48Bill Wendling llvm::Attributes FnAttrs = AttrList.getFnAttributes(); 18524d68ed5f03ad1235946377eb32b5c4d0412f2e48Bill Wendling if (FnAttrs.hasAttributes()) 185375d37b493e2282f993a19a166bd573b03a7535afBill Wendling AttrVec.push_back(llvm:: 185475d37b493e2282f993a19a166bd573b03a7535afBill Wendling AttributeWithIndex::get(llvm::AttrListPtr::FunctionIndex, 185575d37b493e2282f993a19a166bd573b03a7535afBill Wendling FnAttrs)); 185640f9c302f23a35611cd354f40b22b37f2c554a40John McCall 1857bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // Okay, we can transform this. Create the new call instruction and copy 1858bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // over the required information. 18596ba728d9687b2617793f5afd410650a8d6c71080Gabor Greif ArgList.append(CS.arg_begin(), CS.arg_begin() + ArgNo); 18604c7d9f1507d0f102bd4133bba63348636facd469Jay Foad llvm::CallInst *NewCall = llvm::CallInst::Create(NewFn, ArgList, "", CI); 1861bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner ArgList.clear(); 1862ffbb15e54a6dc120087003d1e42448b8705bd58aBenjamin Kramer if (!NewCall->getType()->isVoidTy()) 1863bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner NewCall->takeName(CI); 1864a61ab0521576e9e9e90cd2d482f8684e6070a93cChris Lattner NewCall->setAttributes(llvm::AttrListPtr::get(AttrVec)); 1865ca6408c3176783f0b29da4679a08512aa05f0c73Daniel Dunbar NewCall->setCallingConv(CI->getCallingConv()); 1866bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner 1867bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // Finally, remove the old call, replacing any uses with the new one. 186800549fcec0490b2daf27543e532f94adbb186063Chris Lattner if (!CI->use_empty()) 186900549fcec0490b2daf27543e532f94adbb186063Chris Lattner CI->replaceAllUsesWith(NewCall); 18703b122bc5f1203615e2128e0c1a63da438865b1ccDevang Patel 1871c60346388d60b1756f3675dabb60dc58da0728ecChris Lattner // Copy debug location attached to CI. 1872c60346388d60b1756f3675dabb60dc58da0728ecChris Lattner if (!CI->getDebugLoc().isUnknown()) 1873c60346388d60b1756f3675dabb60dc58da0728ecChris Lattner NewCall->setDebugLoc(CI->getDebugLoc()); 1874bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner CI->eraseFromParent(); 1875bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner } 1876bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner} 1877bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner 1878025039377d7247620750205dbd61ca1ba336f7e0Rafael Espindolavoid CodeGenModule::HandleCXXStaticMemberVarInstantiation(VarDecl *VD) { 1879025039377d7247620750205dbd61ca1ba336f7e0Rafael Espindola TemplateSpecializationKind TSK = VD->getTemplateSpecializationKind(); 1880025039377d7247620750205dbd61ca1ba336f7e0Rafael Espindola // If we have a definition, this might be a deferred decl. If the 1881025039377d7247620750205dbd61ca1ba336f7e0Rafael Espindola // instantiation is explicit, make sure we emit it at the end. 1882025039377d7247620750205dbd61ca1ba336f7e0Rafael Espindola if (VD->getDefinition() && TSK == TSK_ExplicitInstantiationDefinition) 1883025039377d7247620750205dbd61ca1ba336f7e0Rafael Espindola GetAddrOfGlobalVar(VD); 1884234fe654a3dd2888be42ae5db34db96c5c2c4ba3Rafael Espindola} 1885bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 1886b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattnervoid CodeGenModule::EmitGlobalFunctionDefinition(GlobalDecl GD) { 1887b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner const FunctionDecl *D = cast<FunctionDecl>(GD.getDecl()); 1888d26bc76c98006609002d9930f8840490e88ac5b5John McCall 18891f6f961293da9c2b1c23da2411c1b439a9502ed0John McCall // Compute the function info and LLVM type. 1890de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall const CGFunctionInfo &FI = getTypes().arrangeGlobalDeclaration(GD); 1891de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall llvm::FunctionType *Ty = getTypes().GetFunctionType(FI); 1892d26bc76c98006609002d9930f8840490e88ac5b5John McCall 18939fa959d5bfbbb17d7c6ba71252219201fc8dc971Chris Lattner // Get or create the prototype for the function. 1894b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner llvm::Constant *Entry = GetAddrOfFunction(GD, Ty); 18951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18960558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner // Strip off a bitcast if we got one back. 18970558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner if (llvm::ConstantExpr *CE = dyn_cast<llvm::ConstantExpr>(Entry)) { 18980558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner assert(CE->getOpcode() == llvm::Instruction::BitCast); 18990558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner Entry = CE->getOperand(0); 19000558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner } 19011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19030558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner if (cast<llvm::GlobalValue>(Entry)->getType()->getElementType() != Ty) { 1904bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner llvm::GlobalValue *OldFn = cast<llvm::GlobalValue>(Entry); 19051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 190642745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar // If the types mismatch then we have to rewrite the definition. 1907bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner assert(OldFn->isDeclaration() && 19080558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner "Shouldn't replace non-declaration"); 190934809507232bc4c3c4840c7d092c7440219fddafChris Lattner 191062b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // F is the Function* for the one with the wrong type, we must make a new 191162b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // Function* and update everything that used F (a declaration) with the new 191262b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // Function* (which will be a definition). 191362b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // 191462b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // This happens if there is a prototype for a function 191562b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // (e.g. "int f()") and then a definition of a different type 1916f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall // (e.g. "int f(int x)"). Move the old function aside so that it 1917f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall // doesn't interfere with GetAddrOfFunction. 19185f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner OldFn->setName(StringRef()); 1919b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner llvm::Function *NewFn = cast<llvm::Function>(GetAddrOfFunction(GD, Ty)); 19201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1921bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // If this is an implementation of a function without a prototype, try to 1922bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // replace any existing uses of the function (which may be calls) with uses 1923bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // of the new function 19249fa959d5bfbbb17d7c6ba71252219201fc8dc971Chris Lattner if (D->getType()->isFunctionNoProtoType()) { 1925bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner ReplaceUsesOfNonProtoTypeWithRealFunction(OldFn, NewFn); 19269fa959d5bfbbb17d7c6ba71252219201fc8dc971Chris Lattner OldFn->removeDeadConstantUsers(); 19279fa959d5bfbbb17d7c6ba71252219201fc8dc971Chris Lattner } 19281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 192962b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // Replace uses of F with the Function we will endow with a body. 1930bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner if (!Entry->use_empty()) { 19311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Constant *NewPtrForOldDecl = 19323c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(NewFn, Entry->getType()); 1933bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner Entry->replaceAllUsesWith(NewPtrForOldDecl); 1934bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner } 19351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 193662b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // Ok, delete the old function now, which is dead. 1937bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner OldFn->eraseFromParent(); 19381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19390558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner Entry = NewFn; 1940bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } 19411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1942112c967bd5c862a0f5d7913aa06700c048807db8John McCall // We need to set linkage and visibility on the function before 1943112c967bd5c862a0f5d7913aa06700c048807db8John McCall // generating code for it because various parts of IR generation 1944112c967bd5c862a0f5d7913aa06700c048807db8John McCall // want to propagate this information down (e.g. to local static 1945112c967bd5c862a0f5d7913aa06700c048807db8John McCall // declarations). 19460558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner llvm::Function *Fn = cast<llvm::Function>(Entry); 19478b2423361648c39a7d8a3c5e8129e12006deac32John McCall setFunctionLinkage(D, Fn); 1948bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 1949112c967bd5c862a0f5d7913aa06700c048807db8John McCall // FIXME: this is redundant with part of SetFunctionDefinitionAttributes 19500ffeaad72cb335b926b064379be4c9886bbff004Anders Carlsson setGlobalVisibility(Fn, D); 1951112c967bd5c862a0f5d7913aa06700c048807db8John McCall 1952d26bc76c98006609002d9930f8840490e88ac5b5John McCall CodeGenFunction(*this).GenerateCode(D, Fn, FI); 19536379a7a15335e0af543a942efe9cfd514a83dab8Daniel Dunbar 19547c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar SetFunctionDefinitionAttributes(D, Fn); 19557c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar SetLLVMFunctionAttributesForDefinition(D, Fn); 19561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 195740b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (const ConstructorAttr *CA = D->getAttr<ConstructorAttr>()) 1958219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar AddGlobalCtor(Fn, CA->getPriority()); 195940b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (const DestructorAttr *DA = D->getAttr<DestructorAttr>()) 1960219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar AddGlobalDtor(Fn, DA->getPriority()); 196177f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge if (D->hasAttr<AnnotateAttr>()) 196277f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge AddGlobalAnnotations(D, Fn); 1963bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar} 1964bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 1965f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCallvoid CodeGenModule::EmitAliasDefinition(GlobalDecl GD) { 1966f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall const ValueDecl *D = cast<ValueDecl>(GD.getDecl()); 196740b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis const AliasAttr *AA = D->getAttr<AliasAttr>(); 1968bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner assert(AA && "Not an alias?"); 1969bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 19705f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef MangledName = getMangledName(GD); 1971f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall 1972f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall // If there is a definition in the module, then it wins over the alias. 1973f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall // This is dubious, but allow it to be safe. Just ignore the alias. 1974f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall llvm::GlobalValue *Entry = GetGlobalValue(MangledName); 1975f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall if (Entry && !Entry->isDeclaration()) 1976f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall return; 19771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19782acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *DeclTy = getTypes().ConvertTypeForMem(D->getType()); 1979bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 1980bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // Create a reference to the named value. This ensures that it is emitted 1981bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // if a deferred decl. 1982bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner llvm::Constant *Aliasee; 1983bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner if (isa<llvm::FunctionType>(DeclTy)) 1984c857ce8b08397ed778928b8a000732ca90da2a8cAlex Rosenberg Aliasee = GetOrCreateLLVMFunction(AA->getAliasee(), DeclTy, GD, 19851faa89f9c619e4b2411fab4af7e22ee7a2bd9009Anders Carlsson /*ForVTable=*/false); 1986bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner else 1987f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall Aliasee = GetOrCreateLLVMGlobal(AA->getAliasee(), 198896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(DeclTy), 0); 1989bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 1990bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // Create the new alias itself, but don't set a name yet. 19911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalValue *GA = 1992bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner new llvm::GlobalAlias(Aliasee->getType(), 1993bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner llvm::Function::ExternalLinkage, 1994bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner "", Aliasee, &getModule()); 19951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1996bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner if (Entry) { 1997f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall assert(Entry->isDeclaration()); 1998f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall 1999bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // If there is a declaration in the module, then we had an extern followed 2000bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // by the alias, as in: 2001bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // extern int test6(); 2002bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // ... 2003bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // int test6() __attribute__((alias("test7"))); 2004bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // 2005bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // Remove it and replace uses of it with the alias. 2006f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall GA->takeName(Entry); 20071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20083c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Entry->replaceAllUsesWith(llvm::ConstantExpr::getBitCast(GA, 2009bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner Entry->getType())); 2010bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner Entry->eraseFromParent(); 2011f746aa6a8f538be914173a4aef2d9a2fd9f99d17John McCall } else { 20129a20d55807cc2f6534a9c51a46cc8143ed16786dAnders Carlsson GA->setName(MangledName); 2013bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner } 20141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20157c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // Set attributes which are particular to an alias; this is a 20167c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // specialization of the attributes which may be set on a global 20177c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // variable/function. 201840b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (D->hasAttr<DLLExportAttr>()) { 20197c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 20207c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // The dllexport attribute is ignored for undefined symbols. 202106a54a38be5054c910ffc92db60edab23f9ea105Argyrios Kyrtzidis if (FD->hasBody()) 20227c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar GA->setLinkage(llvm::Function::DLLExportLinkage); 20237c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar } else { 20247c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar GA->setLinkage(llvm::Function::DLLExportLinkage); 20257c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar } 20261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } else if (D->hasAttr<WeakAttr>() || 202711e8ce7380856abee188b237c2600272df2ed09dRafael Espindola D->hasAttr<WeakRefAttr>() || 20280a0d2b179085a52c10402feebeb6db8b4d96a140Douglas Gregor D->isWeakImported()) { 20297c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar GA->setLinkage(llvm::Function::WeakAnyLinkage); 20307c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar } 20317c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 20327c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar SetCommonAttributes(D, GA); 2033bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner} 2034bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 20358dd55a3c3b28d195717c87bbc60e765951d408feBenjamin Kramerllvm::Function *CodeGenModule::getIntrinsic(unsigned IID, 20362d3ba4f5a923a90c3fc290ddfba5e36c2d0a9b46Chris Lattner ArrayRef<llvm::Type*> Tys) { 2037df983a8bcbbcea911b8dce283f044787df119d50Jay Foad return llvm::Intrinsic::getDeclaration(&getModule(), (llvm::Intrinsic::ID)IID, 20388dd55a3c3b28d195717c87bbc60e765951d408feBenjamin Kramer Tys); 20397acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattner} 2040bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 20411d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbarstatic llvm::StringMapEntry<llvm::Constant*> & 20421d5529132e4620562cab931c1f84c24e42f02741Daniel DunbarGetConstantCFStringEntry(llvm::StringMap<llvm::Constant*> &Map, 20431d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar const StringLiteral *Literal, 204470ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar bool TargetIsLSB, 20451d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar bool &IsUTF16, 20461d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar unsigned &StringLength) { 20475f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef String = Literal->getString(); 20482f4eaef37476ae6891ede8ba215d0f6fd093629bBenjamin Kramer unsigned NumBytes = String.size(); 20491d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar 2050f015b034159d40e7033309e50036804eb1971787Daniel Dunbar // Check for simple case. 2051f015b034159d40e7033309e50036804eb1971787Daniel Dunbar if (!Literal->containsNonAsciiOrNull()) { 2052f015b034159d40e7033309e50036804eb1971787Daniel Dunbar StringLength = NumBytes; 20532f4eaef37476ae6891ede8ba215d0f6fd093629bBenjamin Kramer return Map.GetOrCreateValue(String); 2054f015b034159d40e7033309e50036804eb1971787Daniel Dunbar } 2055f015b034159d40e7033309e50036804eb1971787Daniel Dunbar 205684392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling // Otherwise, convert the UTF8 literals into a string of shorts. 205784392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling IsUTF16 = true; 205884392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling 205984392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling SmallVector<UTF16, 128> ToBuf(NumBytes + 1); // +1 for ending nulls. 206031ba6135375433b617a8587ea6cc836a014ebd86Roman Divacky const UTF8 *FromPtr = (const UTF8 *)String.data(); 20611d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar UTF16 *ToPtr = &ToBuf[0]; 20621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2063e7ddfb974884ec75ffd66953b79511ea457493baFariborz Jahanian (void)ConvertUTF8toUTF16(&FromPtr, FromPtr + NumBytes, 2064e7ddfb974884ec75ffd66953b79511ea457493baFariborz Jahanian &ToPtr, ToPtr + NumBytes, 2065e7ddfb974884ec75ffd66953b79511ea457493baFariborz Jahanian strictConversion); 20661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 206770ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar // ConvertUTF8toUTF16 returns the length in ToPtr. 20681d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar StringLength = ToPtr - &ToBuf[0]; 206970ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar 207084392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling // Add an explicit null. 207184392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling *ToPtr = 0; 207284392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling return Map. 207384392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling GetOrCreateValue(StringRef(reinterpret_cast<const char *>(ToBuf.data()), 207484392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling (StringLength + 1) * 2)); 20751d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar} 20761d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar 2077cf8e168baf75b7ede6493d0373d64545c29c1a90Fariborz Jahanianstatic llvm::StringMapEntry<llvm::Constant*> & 2078cf8e168baf75b7ede6493d0373d64545c29c1a90Fariborz JahanianGetConstantStringEntry(llvm::StringMap<llvm::Constant*> &Map, 20798322c23956c4dea057a930753f23ff6467353e55Bill Wendling const StringLiteral *Literal, 20808322c23956c4dea057a930753f23ff6467353e55Bill Wendling unsigned &StringLength) { 20818322c23956c4dea057a930753f23ff6467353e55Bill Wendling StringRef String = Literal->getString(); 20828322c23956c4dea057a930753f23ff6467353e55Bill Wendling StringLength = String.size(); 20838322c23956c4dea057a930753f23ff6467353e55Bill Wendling return Map.GetOrCreateValue(String); 2084cf8e168baf75b7ede6493d0373d64545c29c1a90Fariborz Jahanian} 2085cf8e168baf75b7ede6493d0373d64545c29c1a90Fariborz Jahanian 20861d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbarllvm::Constant * 20871d5529132e4620562cab931c1f84c24e42f02741Daniel DunbarCodeGenModule::GetAddrOfConstantCFString(const StringLiteral *Literal) { 20881d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar unsigned StringLength = 0; 20891d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar bool isUTF16 = false; 20901d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar llvm::StringMapEntry<llvm::Constant*> &Entry = 20911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump GetConstantCFStringEntry(CFConstantStringMap, Literal, 209225a6a84cf5067b32c271e3ba078676dee838798dMicah Villmow getDataLayout().isLittleEndian(), 209370ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar isUTF16, StringLength); 20941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20951d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar if (llvm::Constant *C = Entry.getValue()) 20961d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar return C; 20971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20988b418685e9e4f02f4eb2a76e1ec063e07552b68dChris Lattner llvm::Constant *Zero = llvm::Constant::getNullValue(Int32Ty); 20993e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar llvm::Constant *Zeros[] = { Zero, Zero }; 21001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21019d4a15fd3b85434c43ea27562793de63a793321aChris Lattner // If we don't already have it, get __CFConstantStringClassReference. 2102c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson if (!CFConstantStringClassRef) { 21032acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *Ty = getTypes().ConvertType(getContext().IntTy); 210496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson Ty = llvm::ArrayType::get(Ty, 0); 21051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Constant *GV = CreateRuntimeVariable(Ty, 21069d4a15fd3b85434c43ea27562793de63a793321aChris Lattner "__CFConstantStringClassReference"); 21073e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar // Decay array -> ptr 21083e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar CFConstantStringClassRef = 2109a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad llvm::ConstantExpr::getGetElementPtr(GV, Zeros); 2110c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson } 21111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2112e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson QualType CFTy = getContext().getCFConstantStringType(); 21133e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar 21142acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::StructType *STy = 2115e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson cast<llvm::StructType>(getTypes().ConvertType(CFTy)); 2116e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson 21171d236ab930816f5da27bade92904914c44b73b4cBenjamin Kramer llvm::Constant *Fields[4]; 211844b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 2119c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // Class pointer. 21205add6835b0c6b0f67e19fd5366825d3e41eb0dcfAnders Carlsson Fields[0] = CFConstantStringClassRef; 21211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2122c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // Flags. 21232acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *Ty = getTypes().ConvertType(getContext().UnsignedIntTy); 21241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Fields[1] = isUTF16 ? llvm::ConstantInt::get(Ty, 0x07d0) : 21255add6835b0c6b0f67e19fd5366825d3e41eb0dcfAnders Carlsson llvm::ConstantInt::get(Ty, 0x07C8); 21265add6835b0c6b0f67e19fd5366825d3e41eb0dcfAnders Carlsson 2127c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // String pointer. 212884392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling llvm::Constant *C = 0; 212984392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling if (isUTF16) { 213084392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling ArrayRef<uint16_t> Arr = 213184392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling llvm::makeArrayRef<uint16_t>((uint16_t*)Entry.getKey().data(), 213284392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling Entry.getKey().size() / 2); 213384392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling C = llvm::ConstantDataArray::get(VMContext, Arr); 213484392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling } else { 213584392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling C = llvm::ConstantDataArray::getString(VMContext, Entry.getKey()); 213684392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling } 2137a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar 213895b851e55c328af4b69da7bfc1124bf258c0ffe5Chris Lattner llvm::GlobalValue::LinkageTypes Linkage; 21391bf7a3fcc4e2ad30688f7b0db464ad1ccabe77e2Bill Wendling if (isUTF16) 2140278b9f06933c385ffbccc15f8491787470cb4a1bChris Lattner // FIXME: why do utf strings get "_" labels instead of "L" labels? 214195b851e55c328af4b69da7bfc1124bf258c0ffe5Chris Lattner Linkage = llvm::GlobalValue::InternalLinkage; 21421bf7a3fcc4e2ad30688f7b0db464ad1ccabe77e2Bill Wendling else 2143584acf2ded2c18a18d6da0e1c01f5859a384d99fRafael Espindola // FIXME: With OS X ld 123.2 (xcode 4) and LTO we would get a linker error 2144584acf2ded2c18a18d6da0e1c01f5859a384d99fRafael Espindola // when using private linkage. It is not clear if this is a bug in ld 2145584acf2ded2c18a18d6da0e1c01f5859a384d99fRafael Espindola // or a reasonable new restriction. 2146dc0f137295bc7ec5b231ff1842388f149f43c0c8Rafael Espindola Linkage = llvm::GlobalValue::LinkerPrivateLinkage; 2147278b9f06933c385ffbccc15f8491787470cb4a1bChris Lattner 21481bf7a3fcc4e2ad30688f7b0db464ad1ccabe77e2Bill Wendling // Note: -fwritable-strings doesn't make the backing store strings of 21491bf7a3fcc4e2ad30688f7b0db464ad1ccabe77e2Bill Wendling // CFStrings writable. (See <rdar://problem/10657500>) 21501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalVariable *GV = 21511bf7a3fcc4e2ad30688f7b0db464ad1ccabe77e2Bill Wendling new llvm::GlobalVariable(getModule(), C->getType(), /*isConstant=*/true, 21521bf7a3fcc4e2ad30688f7b0db464ad1ccabe77e2Bill Wendling Linkage, C, ".str"); 2153b266a1fce09ab4ee7033268199509aacfbef056aRafael Espindola GV->setUnnamedAddr(true); 2154a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar if (isUTF16) { 21554da244c23d6093adbbbc41654aa5c5111b38f431Ken Dyck CharUnits Align = getContext().getTypeAlignInChars(getContext().ShortTy); 21564da244c23d6093adbbbc41654aa5c5111b38f431Ken Dyck GV->setAlignment(Align.getQuantity()); 2157f7e903d7a30891083420c07ebeed281726a101d6Daniel Dunbar } else { 2158f7e903d7a30891083420c07ebeed281726a101d6Daniel Dunbar CharUnits Align = getContext().getTypeAlignInChars(getContext().CharTy); 2159f7e903d7a30891083420c07ebeed281726a101d6Daniel Dunbar GV->setAlignment(Align.getQuantity()); 2160a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar } 216184392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling 216284392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling // String. 2163a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad Fields[2] = llvm::ConstantExpr::getGetElementPtr(GV, Zeros); 21645add6835b0c6b0f67e19fd5366825d3e41eb0dcfAnders Carlsson 216584392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling if (isUTF16) 216684392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling // Cast the UTF16 string to the correct type. 216784392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling Fields[2] = llvm::ConstantExpr::getBitCast(Fields[2], Int8PtrTy); 216884392d0edc7127f868d3c97484ffc9d789c317ffBill Wendling 2169c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // String length. 2170c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson Ty = getTypes().ConvertType(getContext().LongTy); 21715add6835b0c6b0f67e19fd5366825d3e41eb0dcfAnders Carlsson Fields[3] = llvm::ConstantInt::get(Ty, StringLength); 21721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2173c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // The struct. 217408e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson C = llvm::ConstantStruct::get(STy, Fields); 21751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump GV = new llvm::GlobalVariable(getModule(), C->getType(), true, 21761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalVariable::PrivateLinkage, C, 217795b851e55c328af4b69da7bfc1124bf258c0ffe5Chris Lattner "_unnamed_cfstring_"); 2178bcfd1f55bfbb3e5944cd5e03d07b343e280838c4Douglas Gregor if (const char *Sect = getContext().getTargetInfo().getCFStringSection()) 21798e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar GV->setSection(Sect); 21801d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar Entry.setValue(GV); 21811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21820c67829763b98bc670062b553897a851fab17401Anders Carlsson return GV; 2183c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson} 218445e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 218545c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregorstatic RecordDecl * 218645c4ea75b235de94f44bf96843624e6a559e4c00Douglas GregorCreateRecordDecl(const ASTContext &Ctx, RecordDecl::TagKind TK, 218745c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor DeclContext *DC, IdentifierInfo *Id) { 218845c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor SourceLocation Loc; 21894e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (Ctx.getLangOpts().CPlusPlus) 219045c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor return CXXRecordDecl::Create(Ctx, TK, DC, Loc, Loc, Id); 219145c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor else 219245c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor return RecordDecl::Create(Ctx, TK, DC, Loc, Loc, Id); 219345c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor} 219445c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor 219533e982bf782d851bfe5767acb1336fcf3419ac6bFariborz Jahanianllvm::Constant * 21964c73307c74764ba99e1379677fe92af72f676531Fariborz JahanianCodeGenModule::GetAddrOfConstantString(const StringLiteral *Literal) { 21972bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian unsigned StringLength = 0; 21982bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian llvm::StringMapEntry<llvm::Constant*> &Entry = 2199cf8e168baf75b7ede6493d0373d64545c29c1a90Fariborz Jahanian GetConstantStringEntry(CFConstantStringMap, Literal, StringLength); 22002bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian 22012bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian if (llvm::Constant *C = Entry.getValue()) 22022bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian return C; 22032bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian 2204812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner llvm::Constant *Zero = llvm::Constant::getNullValue(Int32Ty); 22052bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian llvm::Constant *Zeros[] = { Zero, Zero }; 22062bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian 2207ec951e0c2fc0db00c36bc60c900331dde32c1b43Fariborz Jahanian // If we don't already have it, get _NSConstantStringClassReference. 22084c73307c74764ba99e1379677fe92af72f676531Fariborz Jahanian if (!ConstantStringClassRef) { 22094e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie std::string StringClass(getLangOpts().ObjCConstantStringClass); 22102acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *Ty = getTypes().ConvertType(getContext().IntTy); 22114c73307c74764ba99e1379677fe92af72f676531Fariborz Jahanian llvm::Constant *GV; 2212260611a32535c851237926bfcf78869b13c07d5bJohn McCall if (LangOpts.ObjCRuntime.isNonFragile()) { 221325dba5d294364fa8339091e4d9e6a8f5db008377Fariborz Jahanian std::string str = 221425dba5d294364fa8339091e4d9e6a8f5db008377Fariborz Jahanian StringClass.empty() ? "OBJC_CLASS_$_NSConstantString" 221525dba5d294364fa8339091e4d9e6a8f5db008377Fariborz Jahanian : "OBJC_CLASS_$_" + StringClass; 22166f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian GV = getObjCRuntime().GetClassGlobal(str); 22176f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian // Make sure the result is of the correct type. 22182acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *PTy = llvm::PointerType::getUnqual(Ty); 22196f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian ConstantStringClassRef = 22206f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian llvm::ConstantExpr::getBitCast(GV, PTy); 22216f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian } else { 222225dba5d294364fa8339091e4d9e6a8f5db008377Fariborz Jahanian std::string str = 222325dba5d294364fa8339091e4d9e6a8f5db008377Fariborz Jahanian StringClass.empty() ? "_NSConstantStringClassReference" 222425dba5d294364fa8339091e4d9e6a8f5db008377Fariborz Jahanian : "_" + StringClass + "ClassReference"; 22252acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *PTy = llvm::ArrayType::get(Ty, 0); 222625dba5d294364fa8339091e4d9e6a8f5db008377Fariborz Jahanian GV = CreateRuntimeVariable(PTy, str); 22276f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian // Decay array -> ptr 22286f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian ConstantStringClassRef = 2229a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad llvm::ConstantExpr::getGetElementPtr(GV, Zeros); 22304c73307c74764ba99e1379677fe92af72f676531Fariborz Jahanian } 22312bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian } 223245c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor 223345c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor if (!NSConstantStringType) { 223445c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor // Construct the type for a constant NSString. 223545c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor RecordDecl *D = CreateRecordDecl(Context, TTK_Struct, 223645c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor Context.getTranslationUnitDecl(), 223745c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor &Context.Idents.get("__builtin_NSString")); 223845c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor D->startDefinition(); 223945c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor 224045c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor QualType FieldTypes[3]; 224145c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor 224245c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor // const int *isa; 224345c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor FieldTypes[0] = Context.getPointerType(Context.IntTy.withConst()); 224445c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor // const char *str; 224545c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor FieldTypes[1] = Context.getPointerType(Context.CharTy.withConst()); 224645c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor // unsigned int length; 224745c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor FieldTypes[2] = Context.UnsignedIntTy; 224845c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor 224945c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor // Create fields 225045c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor for (unsigned i = 0; i < 3; ++i) { 225145c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor FieldDecl *Field = FieldDecl::Create(Context, D, 225245c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor SourceLocation(), 225345c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor SourceLocation(), 0, 225445c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor FieldTypes[i], /*TInfo=*/0, 225545c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor /*BitWidth=*/0, 225645c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor /*Mutable=*/false, 2257ca5233044ef679840d1ad1c46a36b16e2ee8a6e1Richard Smith ICIS_NoInit); 225845c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor Field->setAccess(AS_public); 225945c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor D->addDecl(Field); 226045c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor } 226145c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor 226245c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor D->completeDefinition(); 226345c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor QualType NSTy = Context.getTagDeclType(D); 226445c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor NSConstantStringType = cast<llvm::StructType>(getTypes().ConvertType(NSTy)); 226545c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor } 22662bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian 22671d236ab930816f5da27bade92904914c44b73b4cBenjamin Kramer llvm::Constant *Fields[3]; 22682bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian 22692bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian // Class pointer. 22704c73307c74764ba99e1379677fe92af72f676531Fariborz Jahanian Fields[0] = ConstantStringClassRef; 22712bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian 22722bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian // String pointer. 227394010695f7fce626e41ef045b60def9c912e9ce8Chris Lattner llvm::Constant *C = 227494010695f7fce626e41ef045b60def9c912e9ce8Chris Lattner llvm::ConstantDataArray::getString(VMContext, Entry.getKey()); 22752bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian 22762bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian llvm::GlobalValue::LinkageTypes Linkage; 22772bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian bool isConstant; 2278cf8e168baf75b7ede6493d0373d64545c29c1a90Fariborz Jahanian Linkage = llvm::GlobalValue::PrivateLinkage; 22794e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie isConstant = !LangOpts.WritableStrings; 22802bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian 22812bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian llvm::GlobalVariable *GV = 22822bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian new llvm::GlobalVariable(getModule(), C->getType(), isConstant, Linkage, C, 22832bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian ".str"); 2284803d307a5385059b1a84dfe9706ab158c80a20dcRafael Espindola GV->setUnnamedAddr(true); 2285cf8e168baf75b7ede6493d0373d64545c29c1a90Fariborz Jahanian CharUnits Align = getContext().getTypeAlignInChars(getContext().CharTy); 2286cf8e168baf75b7ede6493d0373d64545c29c1a90Fariborz Jahanian GV->setAlignment(Align.getQuantity()); 2287a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad Fields[1] = llvm::ConstantExpr::getGetElementPtr(GV, Zeros); 22882bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian 22892bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian // String length. 22902acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *Ty = getTypes().ConvertType(getContext().UnsignedIntTy); 22912bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian Fields[2] = llvm::ConstantInt::get(Ty, StringLength); 22922bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian 22932bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian // The struct. 229445c4ea75b235de94f44bf96843624e6a559e4c00Douglas Gregor C = llvm::ConstantStruct::get(NSConstantStringType, Fields); 22952bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian GV = new llvm::GlobalVariable(getModule(), C->getType(), true, 22962bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian llvm::GlobalVariable::PrivateLinkage, C, 22972bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian "_unnamed_nsstring_"); 22982bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian // FIXME. Fix section. 2299ec951e0c2fc0db00c36bc60c900331dde32c1b43Fariborz Jahanian if (const char *Sect = 2300260611a32535c851237926bfcf78869b13c07d5bJohn McCall LangOpts.ObjCRuntime.isNonFragile() 2301bcfd1f55bfbb3e5944cd5e03d07b343e280838c4Douglas Gregor ? getContext().getTargetInfo().getNSStringNonFragileABISection() 2302bcfd1f55bfbb3e5944cd5e03d07b343e280838c4Douglas Gregor : getContext().getTargetInfo().getNSStringSection()) 23032bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian GV->setSection(Sect); 23042bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian Entry.setValue(GV); 23052bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian 23062bb5ddaff86ee73d2cea7ec1835978afc88a83f0Fariborz Jahanian return GV; 230733e982bf782d851bfe5767acb1336fcf3419ac6bFariborz Jahanian} 230833e982bf782d851bfe5767acb1336fcf3419ac6bFariborz Jahanian 23090815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas GregorQualType CodeGenModule::getObjCFastEnumerationStateType() { 23100815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor if (ObjCFastEnumerationStateType.isNull()) { 23110815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor RecordDecl *D = CreateRecordDecl(Context, TTK_Struct, 23120815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor Context.getTranslationUnitDecl(), 23130815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor &Context.Idents.get("__objcFastEnumerationState")); 23140815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor D->startDefinition(); 23150815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor 23160815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor QualType FieldTypes[] = { 23170815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor Context.UnsignedLongTy, 23180815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor Context.getPointerType(Context.getObjCIdType()), 23190815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor Context.getPointerType(Context.UnsignedLongTy), 23200815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor Context.getConstantArrayType(Context.UnsignedLongTy, 23210815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor llvm::APInt(32, 5), ArrayType::Normal, 0) 23220815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor }; 23230815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor 23240815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor for (size_t i = 0; i < 4; ++i) { 23250815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor FieldDecl *Field = FieldDecl::Create(Context, 23260815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor D, 23270815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor SourceLocation(), 23280815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor SourceLocation(), 0, 23290815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor FieldTypes[i], /*TInfo=*/0, 23300815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor /*BitWidth=*/0, 23310815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor /*Mutable=*/false, 2332ca5233044ef679840d1ad1c46a36b16e2ee8a6e1Richard Smith ICIS_NoInit); 23330815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor Field->setAccess(AS_public); 23340815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor D->addDecl(Field); 23350815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor } 23360815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor 23370815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor D->completeDefinition(); 23380815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor ObjCFastEnumerationStateType = Context.getTagDeclType(D); 23390815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor } 23400815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor 23410815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor return ObjCFastEnumerationStateType; 23420815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor} 23430815b579b31cb3129f732bb7ea36fd6ba6949e98Douglas Gregor 234464f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedmanllvm::Constant * 234564f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli FriedmanCodeGenModule::GetConstantArrayFromStringLiteral(const StringLiteral *E) { 234664f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman assert(!E->getType()->isPointerType() && "Strings are always arrays"); 234764f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman 234864f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman // Don't emit it as the address of the string, emit the string data itself 234964f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman // as an inline array. 2350812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner if (E->getCharByteWidth() == 1) { 2351812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner SmallString<64> Str(E->getString()); 2352812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner 2353812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner // Resize the string to the right size, which is indicated by its type. 2354812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner const ConstantArrayType *CAT = Context.getAsConstantArrayType(E->getType()); 2355812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner Str.resize(CAT->getSize().getZExtValue()); 2356812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner return llvm::ConstantDataArray::getString(VMContext, Str, false); 2357812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner } 235894010695f7fce626e41ef045b60def9c912e9ce8Chris Lattner 235994010695f7fce626e41ef045b60def9c912e9ce8Chris Lattner llvm::ArrayType *AType = 236094010695f7fce626e41ef045b60def9c912e9ce8Chris Lattner cast<llvm::ArrayType>(getTypes().ConvertType(E->getType())); 236194010695f7fce626e41ef045b60def9c912e9ce8Chris Lattner llvm::Type *ElemTy = AType->getElementType(); 236294010695f7fce626e41ef045b60def9c912e9ce8Chris Lattner unsigned NumElements = AType->getNumElements(); 2363d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner 2364d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner // Wide strings have either 2-byte or 4-byte elements. 2365d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner if (ElemTy->getPrimitiveSizeInBits() == 16) { 2366d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner SmallVector<uint16_t, 32> Elements; 2367d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner Elements.reserve(NumElements); 2368d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner 2369d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner for(unsigned i = 0, e = E->getLength(); i != e; ++i) 2370d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner Elements.push_back(E->getCodeUnit(i)); 2371d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner Elements.resize(NumElements); 2372d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner return llvm::ConstantDataArray::get(VMContext, Elements); 237394010695f7fce626e41ef045b60def9c912e9ce8Chris Lattner } 237494010695f7fce626e41ef045b60def9c912e9ce8Chris Lattner 2375d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner assert(ElemTy->getPrimitiveSizeInBits() == 32); 2376d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner SmallVector<uint32_t, 32> Elements; 2377d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner Elements.reserve(NumElements); 2378d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner 2379d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner for(unsigned i = 0, e = E->getLength(); i != e; ++i) 2380d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner Elements.push_back(E->getCodeUnit(i)); 2381d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner Elements.resize(NumElements); 2382d79ed43d2bb9dd4a54889450ecff9299a9d4d1bcChris Lattner return llvm::ConstantDataArray::get(VMContext, Elements); 238364f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman} 238464f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman 23856143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// GetAddrOfConstantStringFromLiteral - Return a pointer to a 23866143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// constant array for the given string literal. 23876143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbarllvm::Constant * 23886143293fa4366ee95d7e47e61bd030a34bf68b55Daniel DunbarCodeGenModule::GetAddrOfConstantStringFromLiteral(const StringLiteral *S) { 2389a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall CharUnits Align = getContext().getTypeAlignInChars(S->getType()); 239064f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman if (S->isAscii() || S->isUTF8()) { 2391812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner SmallString<64> Str(S->getString()); 2392812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner 2393812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner // Resize the string to the right size, which is indicated by its type. 2394812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner const ConstantArrayType *CAT = Context.getAsConstantArrayType(S->getType()); 2395812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner Str.resize(CAT->getSize().getZExtValue()); 2396812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner return GetAddrOfConstantString(Str, /*GlobalName*/ 0, Align.getQuantity()); 23977eb79c1010c8d30b852768bec96e81cd3e6def2eEli Friedman } 239864f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman 2399812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner // FIXME: the following does not memoize wide strings. 240064f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman llvm::Constant *C = GetConstantArrayFromStringLiteral(S); 240164f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman llvm::GlobalVariable *GV = 240264f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman new llvm::GlobalVariable(getModule(),C->getType(), 24034e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie !LangOpts.WritableStrings, 240464f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman llvm::GlobalValue::PrivateLinkage, 240564f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman C,".str"); 24067d6a7c004361c45a463874a58da28d9f3c35f2e6Seth Cantrell 240764f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman GV->setAlignment(Align.getQuantity()); 240864f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman GV->setUnnamedAddr(true); 240964f45a24b19eb89ff88f7c3ff0df9be8e861ac97Eli Friedman return GV; 24106143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar} 24116143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar 2412eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner/// GetAddrOfConstantStringFromObjCEncode - Return a pointer to a constant 2413eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner/// array for the given ObjCEncodeExpr node. 2414eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattnerllvm::Constant * 2415eaf2bb89eb2aad3b80673de30febe52df43c10ecChris LattnerCodeGenModule::GetAddrOfConstantStringFromObjCEncode(const ObjCEncodeExpr *E) { 2416eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner std::string Str; 2417eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner getContext().getObjCEncodingForType(E->getEncodedType(), Str); 2418a210f350fa78c263caa26e0f999cce85bb235309Eli Friedman 2419a210f350fa78c263caa26e0f999cce85bb235309Eli Friedman return GetAddrOfConstantCString(Str); 2420eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner} 2421eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner 2422eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner 2423a7ad98ff0919d6a24ea7c46634ea29bea551c1a0Chris Lattner/// GenerateWritableString -- Creates storage for a string literal. 2424a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCallstatic llvm::GlobalVariable *GenerateStringLiteral(StringRef str, 242545e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner bool constant, 24265fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar CodeGenModule &CGM, 2427a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall const char *GlobalName, 2428a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall unsigned Alignment) { 24296143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar // Create Constant for this string literal. Don't add a '\0'. 24300032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Constant *C = 243194010695f7fce626e41ef045b60def9c912e9ce8Chris Lattner llvm::ConstantDataArray::getString(CGM.getLLVMContext(), str, false); 24321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 243345e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner // Create a global variable for this string 24341257bc6ee76b931e3f8e51a88298b95379963d24Rafael Espindola llvm::GlobalVariable *GV = 24351257bc6ee76b931e3f8e51a88298b95379963d24Rafael Espindola new llvm::GlobalVariable(CGM.getModule(), C->getType(), constant, 24361257bc6ee76b931e3f8e51a88298b95379963d24Rafael Espindola llvm::GlobalValue::PrivateLinkage, 24371257bc6ee76b931e3f8e51a88298b95379963d24Rafael Espindola C, GlobalName); 2438a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall GV->setAlignment(Alignment); 24391257bc6ee76b931e3f8e51a88298b95379963d24Rafael Espindola GV->setUnnamedAddr(true); 24401257bc6ee76b931e3f8e51a88298b95379963d24Rafael Espindola return GV; 244145e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner} 244245e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 24436143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// GetAddrOfConstantString - Returns a pointer to a character array 24446143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// containing the literal. This contents are exactly that of the 24456143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// given string, i.e. it will not be null terminated automatically; 24466143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// see GetAddrOfConstantCString. Note that whether the result is 24476143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// actually a pointer to an LLVM constant depends on 24486143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// Feature.WriteableStrings. 24496143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// 24506143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// The result has pointer to array type. 24515f9e272e632e951b1efe824cd16acb4d96077930Chris Lattnerllvm::Constant *CodeGenModule::GetAddrOfConstantString(StringRef Str, 2452a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall const char *GlobalName, 2453a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall unsigned Alignment) { 24548e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar // Get the default prefix if a name wasn't specified. 24558e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar if (!GlobalName) 245695b851e55c328af4b69da7bfc1124bf258c0ffe5Chris Lattner GlobalName = ".str"; 24578e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar 24588e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar // Don't share any string literals if strings aren't constant. 24594e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (LangOpts.WritableStrings) 2460a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall return GenerateStringLiteral(Str, false, *this, GlobalName, Alignment); 24611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2462a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall llvm::StringMapEntry<llvm::GlobalVariable *> &Entry = 24639de4342ef79a18c706e46bc23f8f579f5add2375Benjamin Kramer ConstantStringMap.GetOrCreateValue(Str); 246445e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 2465a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall if (llvm::GlobalVariable *GV = Entry.getValue()) { 2466a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall if (Alignment > GV->getAlignment()) { 2467a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall GV->setAlignment(Alignment); 2468a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall } 2469a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall return GV; 2470a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall } 247145e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 247245e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner // Create a global variable for this. 2473812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner llvm::GlobalVariable *GV = GenerateStringLiteral(Str, true, *this, GlobalName, 2474812234b70461eafd43acb6ccbd736bb4bbf88728Chris Lattner Alignment); 2475a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall Entry.setValue(GV); 2476a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall return GV; 247745e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner} 24786143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar 24796143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// GetAddrOfConstantCString - Returns a pointer to a character 24809de4342ef79a18c706e46bc23f8f579f5add2375Benjamin Kramer/// array containing the literal and a terminating '\0' 24816143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// character. The result has pointer to array type. 24829de4342ef79a18c706e46bc23f8f579f5add2375Benjamin Kramerllvm::Constant *CodeGenModule::GetAddrOfConstantCString(const std::string &Str, 2483a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall const char *GlobalName, 2484a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall unsigned Alignment) { 24855f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef StrWithNull(Str.c_str(), Str.size() + 1); 2486a5e19c6b2554f6d9c4b9850d4dbbbfa3643282e5John McCall return GetAddrOfConstantString(StrWithNull, GlobalName, Alignment); 24876143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar} 248841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 2489af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar/// EmitObjCPropertyImplementations - Emit information for synthesized 2490af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar/// properties for an implementation. 24911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpvoid CodeGenModule::EmitObjCPropertyImplementations(const 2492af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCImplementationDecl *D) { 24931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCImplementationDecl::propimpl_iterator 249417945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis i = D->propimpl_begin(), e = D->propimpl_end(); i != e; ++i) { 2495581deb3da481053c4993c7600f97acf7768caac5David Blaikie ObjCPropertyImplDecl *PID = *i; 24961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2497af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // Dynamic is just for type-checking. 2498af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize) { 2499af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCPropertyDecl *PD = PID->getPropertyDecl(); 2500af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 2501af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // Determine which methods need to be implemented, some may have 25021e4691b9d8e1bdcc8ef62b323969d702c51b3c08Jordan Rose // been overridden. Note that ::isPropertyAccessor is not the method 2503af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // we want, that just indicates if the decl came from a 2504af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // property. What we want to know is if the method is defined in 2505af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // this implementation. 250617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis if (!D->getInstanceMethod(PD->getGetterName())) 2507fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian CodeGenFunction(*this).GenerateObjCGetter( 2508fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian const_cast<ObjCImplementationDecl *>(D), PID); 2509af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar if (!PD->isReadOnly() && 251017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis !D->getInstanceMethod(PD->getSetterName())) 2511fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian CodeGenFunction(*this).GenerateObjCSetter( 2512fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian const_cast<ObjCImplementationDecl *>(D), PID); 2513af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar } 2514af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar } 2515af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar} 2516af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 2517e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCallstatic bool needsDestructMethod(ObjCImplementationDecl *impl) { 2518db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose const ObjCInterfaceDecl *iface = impl->getClassInterface(); 2519db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose for (const ObjCIvarDecl *ivar = iface->all_declared_ivar_begin(); 2520e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall ivar; ivar = ivar->getNextIvar()) 2521e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall if (ivar->getType().isDestructedType()) 2522e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall return true; 2523e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall 2524e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall return false; 2525e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall} 2526e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall 2527109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian/// EmitObjCIvarInitializations - Emit information for ivar initialization 2528109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian/// for an implementation. 2529109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanianvoid CodeGenModule::EmitObjCIvarInitializations(ObjCImplementationDecl *D) { 2530e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall // We might need a .cxx_destruct even if we don't have any ivar initializers. 2531e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall if (needsDestructMethod(D)) { 2532e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall IdentifierInfo *II = &getContext().Idents.get(".cxx_destruct"); 2533e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall Selector cxxSelector = getContext().Selectors.getSelector(0, &II); 2534e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall ObjCMethodDecl *DTORMethod = 2535e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall ObjCMethodDecl::Create(getContext(), D->getLocation(), D->getLocation(), 253675cf3e86d33ce810c12084126385371b335c30baArgyrios Kyrtzidis cxxSelector, getContext().VoidTy, 0, D, 253775cf3e86d33ce810c12084126385371b335c30baArgyrios Kyrtzidis /*isInstance=*/true, /*isVariadic=*/false, 25381e4691b9d8e1bdcc8ef62b323969d702c51b3c08Jordan Rose /*isPropertyAccessor=*/true, /*isImplicitlyDeclared=*/true, 253975cf3e86d33ce810c12084126385371b335c30baArgyrios Kyrtzidis /*isDefined=*/false, ObjCMethodDecl::Required); 2540e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall D->addInstanceMethod(DTORMethod); 2541e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall CodeGenFunction(*this).GenerateObjCCtorDtorMethod(D, DTORMethod, false); 2542b03527a9a395168762ad8e25e59a7a272dd74561John McCall D->setHasDestructors(true); 2543e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall } 2544e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall 2545e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall // If the implementation doesn't have any ivar initializers, we don't need 2546e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall // a .cxx_construct. 2547827bbcc8a9115782693b21030a45378abe5c1862David Chisnall if (D->getNumIvarInitializers() == 0) 2548109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian return; 2549109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian 2550e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall IdentifierInfo *II = &getContext().Idents.get(".cxx_construct"); 2551e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall Selector cxxSelector = getContext().Selectors.getSelector(0, &II); 2552109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian // The constructor returns 'self'. 2553109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian ObjCMethodDecl *CTORMethod = ObjCMethodDecl::Create(getContext(), 2554109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian D->getLocation(), 255511d77169555480ee0a04c6e5bc390d8fde41175dArgyrios Kyrtzidis D->getLocation(), 255611d77169555480ee0a04c6e5bc390d8fde41175dArgyrios Kyrtzidis cxxSelector, 2557109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian getContext().getObjCIdType(), 0, 255875cf3e86d33ce810c12084126385371b335c30baArgyrios Kyrtzidis D, /*isInstance=*/true, 255975cf3e86d33ce810c12084126385371b335c30baArgyrios Kyrtzidis /*isVariadic=*/false, 25601e4691b9d8e1bdcc8ef62b323969d702c51b3c08Jordan Rose /*isPropertyAccessor=*/true, 256175cf3e86d33ce810c12084126385371b335c30baArgyrios Kyrtzidis /*isImplicitlyDeclared=*/true, 256275cf3e86d33ce810c12084126385371b335c30baArgyrios Kyrtzidis /*isDefined=*/false, 2563109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian ObjCMethodDecl::Required); 2564109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian D->addInstanceMethod(CTORMethod); 2565109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian CodeGenFunction(*this).GenerateObjCCtorDtorMethod(D, CTORMethod, true); 2566b03527a9a395168762ad8e25e59a7a272dd74561John McCall D->setHasNonZeroConstructors(true); 2567109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian} 2568109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian 256991e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson/// EmitNamespace - Emit all declarations in a namespace. 2570984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlssonvoid CodeGenModule::EmitNamespace(const NamespaceDecl *ND) { 257117945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (RecordDecl::decl_iterator I = ND->decls_begin(), E = ND->decls_end(); 2572984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlsson I != E; ++I) 2573984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlsson EmitTopLevelDecl(*I); 2574984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlsson} 2575984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlsson 257691e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson// EmitLinkageSpec - Emit all declarations in a linkage spec. 257791e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlssonvoid CodeGenModule::EmitLinkageSpec(const LinkageSpecDecl *LSD) { 2578f976be8a63f9e0d3bd50e33dadef02c3c9921747Eli Friedman if (LSD->getLanguage() != LinkageSpecDecl::lang_c && 2579f976be8a63f9e0d3bd50e33dadef02c3c9921747Eli Friedman LSD->getLanguage() != LinkageSpecDecl::lang_cxx) { 258091e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson ErrorUnsupported(LSD, "linkage spec"); 258191e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson return; 258291e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson } 258391e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson 258417945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (RecordDecl::decl_iterator I = LSD->decls_begin(), E = LSD->decls_end(); 2585c1868e533e63a1b7dad7a22714fc593c045382aeFariborz Jahanian I != E; ++I) { 2586c1868e533e63a1b7dad7a22714fc593c045382aeFariborz Jahanian if (ObjCImplDecl *OID = dyn_cast<ObjCImplDecl>(*I)) { 2587c1868e533e63a1b7dad7a22714fc593c045382aeFariborz Jahanian for (ObjCContainerDecl::method_iterator M = OID->meth_begin(), 2588c1868e533e63a1b7dad7a22714fc593c045382aeFariborz Jahanian MEnd = OID->meth_end(); 2589c1868e533e63a1b7dad7a22714fc593c045382aeFariborz Jahanian M != MEnd; ++M) 2590c1868e533e63a1b7dad7a22714fc593c045382aeFariborz Jahanian EmitTopLevelDecl(*M); 2591c1868e533e63a1b7dad7a22714fc593c045382aeFariborz Jahanian } 259291e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson EmitTopLevelDecl(*I); 2593c1868e533e63a1b7dad7a22714fc593c045382aeFariborz Jahanian } 259491e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson} 259591e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson 259641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar/// EmitTopLevelDecl - Emit code for a single top level declaration. 259741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbarvoid CodeGenModule::EmitTopLevelDecl(Decl *D) { 259841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // If an error has occurred, stop code generation, but continue 259941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // parsing and semantic analysis (to ensure all warnings and errors 260041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // are emitted). 260141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar if (Diags.hasErrorOccurred()) 260241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar return; 260341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 260416e8be2ac532358d4e413fdfa2643b1876edda78Douglas Gregor // Ignore dependent declarations. 260516e8be2ac532358d4e413fdfa2643b1876edda78Douglas Gregor if (D->getDeclContext() && D->getDeclContext()->isDependentContext()) 260616e8be2ac532358d4e413fdfa2643b1876edda78Douglas Gregor return; 26071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 260841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar switch (D->getKind()) { 2609293361afd4199c92aabff9267fddea890943c586Anders Carlsson case Decl::CXXConversion: 26102b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson case Decl::CXXMethod: 261141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::Function: 261216e8be2ac532358d4e413fdfa2643b1876edda78Douglas Gregor // Skip function templates 26138387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet if (cast<FunctionDecl>(D)->getDescribedFunctionTemplate() || 26148387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet cast<FunctionDecl>(D)->isLateTemplateParsed()) 261516e8be2ac532358d4e413fdfa2643b1876edda78Douglas Gregor return; 26161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2617555b4bb2749aea2ec8e2adc351a71ec1cb9bdc33Anders Carlsson EmitGlobal(cast<FunctionDecl>(D)); 2618555b4bb2749aea2ec8e2adc351a71ec1cb9bdc33Anders Carlsson break; 2619555b4bb2749aea2ec8e2adc351a71ec1cb9bdc33Anders Carlsson 262041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::Var: 2621555b4bb2749aea2ec8e2adc351a71ec1cb9bdc33Anders Carlsson EmitGlobal(cast<VarDecl>(D)); 262241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 262341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 262426fbc72b33bdbd20b0145bf117c64d373f8051e3John McCall // Indirect fields from global anonymous structs and unions can be 262526fbc72b33bdbd20b0145bf117c64d373f8051e3John McCall // ignored; only the actual variable requires IR gen support. 262626fbc72b33bdbd20b0145bf117c64d373f8051e3John McCall case Decl::IndirectField: 262726fbc72b33bdbd20b0145bf117c64d373f8051e3John McCall break; 262826fbc72b33bdbd20b0145bf117c64d373f8051e3John McCall 262995d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson // C++ Decls 263041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::Namespace: 2631984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlsson EmitNamespace(cast<NamespaceDecl>(D)); 263241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 26339cfbe48a7a20a217fdb2920b29b67ae7941cb116Douglas Gregor // No code generation needed. 26349d0c6613ec040ad8d952556be909232a7f25dedeJohn McCall case Decl::UsingShadow: 26359cfbe48a7a20a217fdb2920b29b67ae7941cb116Douglas Gregor case Decl::Using: 2636dd9967a6374c9a44be4af02aaeee340ffb82848fDouglas Gregor case Decl::UsingDirective: 2637127102b5196ffe04bdb70fd553fe62c265ab10a9Douglas Gregor case Decl::ClassTemplate: 2638127102b5196ffe04bdb70fd553fe62c265ab10a9Douglas Gregor case Decl::FunctionTemplate: 26393e4c6c4c79a03f5cb0c4671d7c282d623c6dc35eRichard Smith case Decl::TypeAliasTemplate: 2640018837b081bd1a725bae1c020eb1649975b04d67Anders Carlsson case Decl::NamespaceAlias: 26416a576ab708d3aa7d40e5d867ab1de5d3cb507553Douglas Gregor case Decl::Block: 264215de72cf580840c61e5704c2f8a2b56f9d0638e1Douglas Gregor case Decl::Import: 26439cfbe48a7a20a217fdb2920b29b67ae7941cb116Douglas Gregor break; 264495d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson case Decl::CXXConstructor: 26451fe598c026dc03fddbd65efb8119eb1afd9b1520Anders Carlsson // Skip function templates 26468387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet if (cast<FunctionDecl>(D)->getDescribedFunctionTemplate() || 26478387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet cast<FunctionDecl>(D)->isLateTemplateParsed()) 26481fe598c026dc03fddbd65efb8119eb1afd9b1520Anders Carlsson return; 26491fe598c026dc03fddbd65efb8119eb1afd9b1520Anders Carlsson 265095d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson EmitCXXConstructors(cast<CXXConstructorDecl>(D)); 265195d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson break; 265227ae53665f8b00fe4ba21da0fa79a4ce6e0b6cd5Anders Carlsson case Decl::CXXDestructor: 26538387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet if (cast<FunctionDecl>(D)->isLateTemplateParsed()) 26548387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet return; 265527ae53665f8b00fe4ba21da0fa79a4ce6e0b6cd5Anders Carlsson EmitCXXDestructors(cast<CXXDestructorDecl>(D)); 265627ae53665f8b00fe4ba21da0fa79a4ce6e0b6cd5Anders Carlsson break; 265736674d2978eb53962218ac67bb4d352cc287ea05Anders Carlsson 265836674d2978eb53962218ac67bb4d352cc287ea05Anders Carlsson case Decl::StaticAssert: 265936674d2978eb53962218ac67bb4d352cc287ea05Anders Carlsson // Nothing to do. 266036674d2978eb53962218ac67bb4d352cc287ea05Anders Carlsson break; 266136674d2978eb53962218ac67bb4d352cc287ea05Anders Carlsson 266295d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson // Objective-C Decls 26631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 266438e24c782c17b6058bf61d635747bbde19fb1bc7Fariborz Jahanian // Forward declarations, no (immediate) code generation. 2665b31cb7f1752ea011fd06ac9574ce24667d11cbdbFariborz Jahanian case Decl::ObjCInterface: 2666ffb0c3adc27d257c8453886957b8d220d1ad14d8Eric Christopher case Decl::ObjCCategory: 266741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 2668285d0dba947b7c9960eaa88e8c4fced0398d4319Chris Lattner 2669bd9482d859a74bf2c45ef8b8aedec61c0e1c8374Douglas Gregor case Decl::ObjCProtocol: { 2670bd9482d859a74bf2c45ef8b8aedec61c0e1c8374Douglas Gregor ObjCProtocolDecl *Proto = cast<ObjCProtocolDecl>(D); 2671bd9482d859a74bf2c45ef8b8aedec61c0e1c8374Douglas Gregor if (Proto->isThisDeclarationADefinition()) 2672bd9482d859a74bf2c45ef8b8aedec61c0e1c8374Douglas Gregor ObjCRuntime->GenerateProtocol(Proto); 267341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 2674bd9482d859a74bf2c45ef8b8aedec61c0e1c8374Douglas Gregor } 2675bd9482d859a74bf2c45ef8b8aedec61c0e1c8374Douglas Gregor 267641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCCategoryImpl: 2677af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // Categories have properties but don't support synthesize so we 2678af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // can ignore them here. 2679e926523105dd2604ccd5c101605dea43c5269965Peter Collingbourne ObjCRuntime->GenerateCategory(cast<ObjCCategoryImplDecl>(D)); 268041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 268141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 2682af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar case Decl::ObjCImplementation: { 2683af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCImplementationDecl *OMD = cast<ObjCImplementationDecl>(D); 2684af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar EmitObjCPropertyImplementations(OMD); 2685109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian EmitObjCIvarInitializations(OMD); 2686e926523105dd2604ccd5c101605dea43c5269965Peter Collingbourne ObjCRuntime->GenerateClass(OMD); 2687be6c6869a993536d4cd007f04e84ef74a1c3b229Eric Christopher // Emit global variable debug information. 2688be6c6869a993536d4cd007f04e84ef74a1c3b229Eric Christopher if (CGDebugInfo *DI = getModuleDebugInfo()) 2689be6c6869a993536d4cd007f04e84ef74a1c3b229Eric Christopher DI->getOrCreateInterfaceType(getContext().getObjCInterfaceType(OMD->getClassInterface()), 2690be6c6869a993536d4cd007f04e84ef74a1c3b229Eric Christopher OMD->getLocation()); 2691be6c6869a993536d4cd007f04e84ef74a1c3b229Eric Christopher 269241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 26931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 269441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCMethod: { 269541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar ObjCMethodDecl *OMD = cast<ObjCMethodDecl>(D); 269641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // If this is not a prototype, emit the body. 26976fb0aee4f9dc261bbec72e1283ad8dc0557a6d96Argyrios Kyrtzidis if (OMD->getBody()) 269841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar CodeGenFunction(*this).GenerateObjCMethod(OMD); 269941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 270041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar } 27011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump case Decl::ObjCCompatibleAlias: 270229254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall ObjCRuntime->RegisterAlias(cast<ObjCCompatibleAliasDecl>(D)); 270341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 270441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 270591e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson case Decl::LinkageSpec: 270691e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson EmitLinkageSpec(cast<LinkageSpecDecl>(D)); 270741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 270841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 270941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::FileScopeAsm: { 271041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar FileScopeAsmDecl *AD = cast<FileScopeAsmDecl>(D); 27115f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef AsmString = AD->getAsmString()->getString(); 27121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 271341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar const std::string &S = getModule().getModuleInlineAsm(); 271441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar if (S.empty()) 271541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar getModule().setModuleInlineAsm(AsmString); 27168ce9cca118b32604f481ad381eafab25b5798c9fJoerg Sonnenberger else if (S.end()[-1] == '\n') 27179f5bff086cad25c15b4deb8a7763786097aadccdChris Lattner getModule().setModuleInlineAsm(S + AsmString.str()); 271841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar else 27198d04258483be6583f0865464234d014807a3e1ccBenjamin Kramer getModule().setModuleInlineAsm(S + '\n' + AsmString.str()); 272041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 272141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar } 27221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 27231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump default: 2724f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump // Make sure we handled everything we should, every other kind is a 2725f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump // non-top-level decl. FIXME: Would be nice to have an isTopLevelDeclKind 2726f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump // function. Need to recode Decl::Kind to do that easily. 272741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar assert(isa<TypeDecl>(D) && "Unsupported decl kind"); 272841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar } 272941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar} 2730744016dde06fcffd50931e94a98c850f8b12cd87John McCall 2731744016dde06fcffd50931e94a98c850f8b12cd87John McCall/// Turns the given pointer into a constant. 2732744016dde06fcffd50931e94a98c850f8b12cd87John McCallstatic llvm::Constant *GetPointerConstant(llvm::LLVMContext &Context, 2733744016dde06fcffd50931e94a98c850f8b12cd87John McCall const void *Ptr) { 2734744016dde06fcffd50931e94a98c850f8b12cd87John McCall uintptr_t PtrInt = reinterpret_cast<uintptr_t>(Ptr); 27352acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *i64 = llvm::Type::getInt64Ty(Context); 2736744016dde06fcffd50931e94a98c850f8b12cd87John McCall return llvm::ConstantInt::get(i64, PtrInt); 2737744016dde06fcffd50931e94a98c850f8b12cd87John McCall} 2738744016dde06fcffd50931e94a98c850f8b12cd87John McCall 2739744016dde06fcffd50931e94a98c850f8b12cd87John McCallstatic void EmitGlobalDeclMetadata(CodeGenModule &CGM, 2740744016dde06fcffd50931e94a98c850f8b12cd87John McCall llvm::NamedMDNode *&GlobalMetadata, 2741744016dde06fcffd50931e94a98c850f8b12cd87John McCall GlobalDecl D, 2742744016dde06fcffd50931e94a98c850f8b12cd87John McCall llvm::GlobalValue *Addr) { 2743744016dde06fcffd50931e94a98c850f8b12cd87John McCall if (!GlobalMetadata) 2744744016dde06fcffd50931e94a98c850f8b12cd87John McCall GlobalMetadata = 2745744016dde06fcffd50931e94a98c850f8b12cd87John McCall CGM.getModule().getOrInsertNamedMetadata("clang.global.decl.ptrs"); 2746744016dde06fcffd50931e94a98c850f8b12cd87John McCall 2747744016dde06fcffd50931e94a98c850f8b12cd87John McCall // TODO: should we report variant information for ctors/dtors? 2748744016dde06fcffd50931e94a98c850f8b12cd87John McCall llvm::Value *Ops[] = { 2749744016dde06fcffd50931e94a98c850f8b12cd87John McCall Addr, 2750744016dde06fcffd50931e94a98c850f8b12cd87John McCall GetPointerConstant(CGM.getLLVMContext(), D.getDecl()) 2751744016dde06fcffd50931e94a98c850f8b12cd87John McCall }; 27526f141659cab11109d9931d92d0988f8850778de3Jay Foad GlobalMetadata->addOperand(llvm::MDNode::get(CGM.getLLVMContext(), Ops)); 2753744016dde06fcffd50931e94a98c850f8b12cd87John McCall} 2754744016dde06fcffd50931e94a98c850f8b12cd87John McCall 2755744016dde06fcffd50931e94a98c850f8b12cd87John McCall/// Emits metadata nodes associating all the global values in the 2756744016dde06fcffd50931e94a98c850f8b12cd87John McCall/// current module with the Decls they came from. This is useful for 2757744016dde06fcffd50931e94a98c850f8b12cd87John McCall/// projects using IR gen as a subroutine. 2758744016dde06fcffd50931e94a98c850f8b12cd87John McCall/// 2759744016dde06fcffd50931e94a98c850f8b12cd87John McCall/// Since there's currently no way to associate an MDNode directly 2760744016dde06fcffd50931e94a98c850f8b12cd87John McCall/// with an llvm::GlobalValue, we create a global named metadata 2761744016dde06fcffd50931e94a98c850f8b12cd87John McCall/// with the name 'clang.global.decl.ptrs'. 2762744016dde06fcffd50931e94a98c850f8b12cd87John McCallvoid CodeGenModule::EmitDeclMetadata() { 2763744016dde06fcffd50931e94a98c850f8b12cd87John McCall llvm::NamedMDNode *GlobalMetadata = 0; 2764744016dde06fcffd50931e94a98c850f8b12cd87John McCall 2765744016dde06fcffd50931e94a98c850f8b12cd87John McCall // StaticLocalDeclMap 27665f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner for (llvm::DenseMap<GlobalDecl,StringRef>::iterator 2767744016dde06fcffd50931e94a98c850f8b12cd87John McCall I = MangledDeclNames.begin(), E = MangledDeclNames.end(); 2768744016dde06fcffd50931e94a98c850f8b12cd87John McCall I != E; ++I) { 2769744016dde06fcffd50931e94a98c850f8b12cd87John McCall llvm::GlobalValue *Addr = getModule().getNamedValue(I->second); 2770744016dde06fcffd50931e94a98c850f8b12cd87John McCall EmitGlobalDeclMetadata(*this, GlobalMetadata, I->first, Addr); 2771744016dde06fcffd50931e94a98c850f8b12cd87John McCall } 2772744016dde06fcffd50931e94a98c850f8b12cd87John McCall} 2773744016dde06fcffd50931e94a98c850f8b12cd87John McCall 2774744016dde06fcffd50931e94a98c850f8b12cd87John McCall/// Emits metadata nodes for all the local variables in the current 2775744016dde06fcffd50931e94a98c850f8b12cd87John McCall/// function. 2776744016dde06fcffd50931e94a98c850f8b12cd87John McCallvoid CodeGenFunction::EmitDeclMetadata() { 2777744016dde06fcffd50931e94a98c850f8b12cd87John McCall if (LocalDeclMap.empty()) return; 2778744016dde06fcffd50931e94a98c850f8b12cd87John McCall 2779744016dde06fcffd50931e94a98c850f8b12cd87John McCall llvm::LLVMContext &Context = getLLVMContext(); 2780744016dde06fcffd50931e94a98c850f8b12cd87John McCall 2781744016dde06fcffd50931e94a98c850f8b12cd87John McCall // Find the unique metadata ID for this name. 2782744016dde06fcffd50931e94a98c850f8b12cd87John McCall unsigned DeclPtrKind = Context.getMDKindID("clang.decl.ptr"); 2783744016dde06fcffd50931e94a98c850f8b12cd87John McCall 2784744016dde06fcffd50931e94a98c850f8b12cd87John McCall llvm::NamedMDNode *GlobalMetadata = 0; 2785744016dde06fcffd50931e94a98c850f8b12cd87John McCall 2786744016dde06fcffd50931e94a98c850f8b12cd87John McCall for (llvm::DenseMap<const Decl*, llvm::Value*>::iterator 2787744016dde06fcffd50931e94a98c850f8b12cd87John McCall I = LocalDeclMap.begin(), E = LocalDeclMap.end(); I != E; ++I) { 2788744016dde06fcffd50931e94a98c850f8b12cd87John McCall const Decl *D = I->first; 2789744016dde06fcffd50931e94a98c850f8b12cd87John McCall llvm::Value *Addr = I->second; 2790744016dde06fcffd50931e94a98c850f8b12cd87John McCall 2791744016dde06fcffd50931e94a98c850f8b12cd87John McCall if (llvm::AllocaInst *Alloca = dyn_cast<llvm::AllocaInst>(Addr)) { 2792744016dde06fcffd50931e94a98c850f8b12cd87John McCall llvm::Value *DAddr = GetPointerConstant(getLLVMContext(), D); 27936f141659cab11109d9931d92d0988f8850778de3Jay Foad Alloca->setMetadata(DeclPtrKind, llvm::MDNode::get(Context, DAddr)); 2794744016dde06fcffd50931e94a98c850f8b12cd87John McCall } else if (llvm::GlobalValue *GV = dyn_cast<llvm::GlobalValue>(Addr)) { 2795744016dde06fcffd50931e94a98c850f8b12cd87John McCall GlobalDecl GD = GlobalDecl(cast<VarDecl>(D)); 2796744016dde06fcffd50931e94a98c850f8b12cd87John McCall EmitGlobalDeclMetadata(CGM, GlobalMetadata, GD, GV); 2797744016dde06fcffd50931e94a98c850f8b12cd87John McCall } 2798744016dde06fcffd50931e94a98c850f8b12cd87John McCall } 2799744016dde06fcffd50931e94a98c850f8b12cd87John McCall} 2800673431a2986f750b4d8fadb57abf3f00db27bbbdDaniel Dunbar 28013dc05418538c719fea48b906bfa4febe5296e126Nick Lewyckyvoid CodeGenModule::EmitCoverageFile() { 28023dc05418538c719fea48b906bfa4febe5296e126Nick Lewycky if (!getCodeGenOpts().CoverageFile.empty()) { 28035ea4f44e34449a78d6b38aa47c14b527839d7aacNick Lewycky if (llvm::NamedMDNode *CUNode = TheModule.getNamedMetadata("llvm.dbg.cu")) { 28045ea4f44e34449a78d6b38aa47c14b527839d7aacNick Lewycky llvm::NamedMDNode *GCov = TheModule.getOrInsertNamedMetadata("llvm.gcov"); 28055ea4f44e34449a78d6b38aa47c14b527839d7aacNick Lewycky llvm::LLVMContext &Ctx = TheModule.getContext(); 28063dc05418538c719fea48b906bfa4febe5296e126Nick Lewycky llvm::MDString *CoverageFile = 28073dc05418538c719fea48b906bfa4febe5296e126Nick Lewycky llvm::MDString::get(Ctx, getCodeGenOpts().CoverageFile); 28085ea4f44e34449a78d6b38aa47c14b527839d7aacNick Lewycky for (int i = 0, e = CUNode->getNumOperands(); i != e; ++i) { 28095ea4f44e34449a78d6b38aa47c14b527839d7aacNick Lewycky llvm::MDNode *CU = CUNode->getOperand(i); 28103dc05418538c719fea48b906bfa4febe5296e126Nick Lewycky llvm::Value *node[] = { CoverageFile, CU }; 28115ea4f44e34449a78d6b38aa47c14b527839d7aacNick Lewycky llvm::MDNode *N = llvm::MDNode::get(Ctx, node); 28125ea4f44e34449a78d6b38aa47c14b527839d7aacNick Lewycky GCov->addOperand(N); 28135ea4f44e34449a78d6b38aa47c14b527839d7aacNick Lewycky } 28145ea4f44e34449a78d6b38aa47c14b527839d7aacNick Lewycky } 28155ea4f44e34449a78d6b38aa47c14b527839d7aacNick Lewycky } 28165ea4f44e34449a78d6b38aa47c14b527839d7aacNick Lewycky} 2817c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber 2818c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weberllvm::Constant *CodeGenModule::EmitUuidofInitializer(StringRef Uuid, 2819c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber QualType GuidType) { 2820c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber // Sema has checked that all uuid strings are of the form 2821c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber // "12345678-1234-1234-1234-1234567890ab". 2822c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber assert(Uuid.size() == 36); 2823c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber const char *Uuidstr = Uuid.data(); 2824c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber for (int i = 0; i < 36; ++i) { 2825c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber if (i == 8 || i == 13 || i == 18 || i == 23) assert(Uuidstr[i] == '-'); 2826c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber else assert(isxdigit(Uuidstr[i])); 2827c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber } 2828c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber 2829c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber llvm::APInt Field0(32, StringRef(Uuidstr , 8), 16); 2830c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber llvm::APInt Field1(16, StringRef(Uuidstr + 9, 4), 16); 2831c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber llvm::APInt Field2(16, StringRef(Uuidstr + 14, 4), 16); 2832193646f16d90f004123965606ec3fae180beafe1Nico Weber static const int Field3ValueOffsets[] = { 19, 21, 24, 26, 28, 30, 32, 34 }; 2833c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber 2834c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber APValue InitStruct(APValue::UninitStruct(), /*NumBases=*/0, /*NumFields=*/4); 2835c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber InitStruct.getStructField(0) = APValue(llvm::APSInt(Field0)); 2836c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber InitStruct.getStructField(1) = APValue(llvm::APSInt(Field1)); 2837c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber InitStruct.getStructField(2) = APValue(llvm::APSInt(Field2)); 2838c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber APValue& Arr = InitStruct.getStructField(3); 2839c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber Arr = APValue(APValue::UninitArray(), 8, 8); 2840c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber for (int t = 0; t < 8; ++t) 284143085815b1b377dc30176afab2b96d6b807d42deNico Weber Arr.getArrayInitializedElt(t) = APValue(llvm::APSInt( 284243085815b1b377dc30176afab2b96d6b807d42deNico Weber llvm::APInt(8, StringRef(Uuidstr + Field3ValueOffsets[t], 2), 16))); 2843c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber 2844c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber return EmitConstantValue(InitStruct, GuidType); 2845c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber} 2846