CodeGenModule.cpp revision b6c8c8bd8d362c8a6cdb767415b0d21e62b77eb2
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" 170dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar#include "CGCall.h" 18af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar#include "CGObjCRuntime.h" 195f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor#include "Mangle.h" 20bd3606426d389370616126af969904ec493cb105Chris Lattner#include "clang/Frontend/CompileOptions.h" 215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/AST/ASTContext.h" 22c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar#include "clang/AST/DeclObjC.h" 2321ef7ae45c8b91f23cf5eab2263421bb398a644bChris Lattner#include "clang/AST/DeclCXX.h" 242c8569d5f43f7de1fb993e84c95ea571dd9ac55eChris Lattner#include "clang/Basic/Diagnostic.h" 258bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman#include "clang/Basic/SourceManager.h" 265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Basic/TargetInfo.h" 27e9b7d8ace8674585818990cff585daae7745bd88Steve Naroff#include "clang/Basic/ConvertUTF.h" 28ec9426ca6039279bcc99bc2c625bb2abe4f0353dNate Begeman#include "llvm/CallingConv.h" 29bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner#include "llvm/Module.h" 305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "llvm/Intrinsics.h" 3120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov#include "llvm/Target/TargetData.h" 325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerusing namespace clang; 335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerusing namespace CodeGen; 345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 36bd3606426d389370616126af969904ec493cb105Chris LattnerCodeGenModule::CodeGenModule(ASTContext &C, const CompileOptions &compileOpts, 37fb97b03e42d397405f617be0252be83e77a66f6eChris Lattner llvm::Module &M, const llvm::TargetData &TD, 38bd3606426d389370616126af969904ec493cb105Chris Lattner Diagnostic &diags) 39bd3606426d389370616126af969904ec493cb105Chris Lattner : BlockModule(C, M, TD, Types, *this), Context(C), 40bd3606426d389370616126af969904ec493cb105Chris Lattner Features(C.getLangOptions()), CompileOpts(compileOpts), TheModule(M), 412a998148a6823c44d67da347c95eb2ea21f6b986Mike Stump TheTargetData(TD), Diags(diags), Types(C, M, TD), Runtime(0), 422a998148a6823c44d67da347c95eb2ea21f6b986Mike Stump MemCpyFn(0), MemMoveFn(0), MemSetFn(0), CFConstantStringClassRef(0) { 43208ff5e8a073de2a5d15cbe03cab8a4c0d935e28Daniel Dunbar 443c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner if (!Features.ObjC1) 453c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner Runtime = 0; 463c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner else if (!Features.NeXTRuntime) 473c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner Runtime = CreateGNUObjCRuntime(*this); 483c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner else if (Features.ObjCNonFragileABI) 493c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner Runtime = CreateMacNonFragileABIObjCRuntime(*this); 503c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner else 513c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner Runtime = CreateMacObjCRuntime(*this); 52e8b9f5b8ea60983c4a74cb8b63879616b914b65aSanjiv Gupta 53e8b9f5b8ea60983c4a74cb8b63879616b914b65aSanjiv Gupta // If debug info generation is enabled, create the CGDebugInfo object. 54bd3606426d389370616126af969904ec493cb105Chris Lattner DebugInfo = CompileOpts.DebugInfo ? new CGDebugInfo(this) : 0; 552b94fe35edf951a14ecd32b21f7ebcc2e3754c67Chris Lattner} 562b94fe35edf951a14ecd32b21f7ebcc2e3754c67Chris Lattner 572b94fe35edf951a14ecd32b21f7ebcc2e3754c67Chris LattnerCodeGenModule::~CodeGenModule() { 58815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenek delete Runtime; 59815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenek delete DebugInfo; 60815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenek} 61815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenek 62815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenekvoid CodeGenModule::Release() { 6382227ff4eb665bbf41720ebdc0dc9215a86ba838Chris Lattner EmitDeferred(); 64208ff5e8a073de2a5d15cbe03cab8a4c0d935e28Daniel Dunbar if (Runtime) 65208ff5e8a073de2a5d15cbe03cab8a4c0d935e28Daniel Dunbar if (llvm::Function *ObjCInitFunction = Runtime->ModuleInitFunction()) 66208ff5e8a073de2a5d15cbe03cab8a4c0d935e28Daniel Dunbar AddGlobalCtor(ObjCInitFunction); 676bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar EmitCtorList(GlobalCtors, "llvm.global_ctors"); 686bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar EmitCtorList(GlobalDtors, "llvm.global_dtors"); 69532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman EmitAnnotations(); 700269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar EmitLLVMUsed(); 71f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar} 72f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar 73488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar/// ErrorUnsupported - Print out an error that codegen doesn't support the 742c8569d5f43f7de1fb993e84c95ea571dd9ac55eChris Lattner/// specified stmt yet. 7590df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbarvoid CodeGenModule::ErrorUnsupported(const Stmt *S, const char *Type, 7690df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar bool OmitOnError) { 7790df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar if (OmitOnError && getDiags().hasErrorOccurred()) 7890df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar return; 79488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar unsigned DiagID = getDiags().getCustomDiagID(Diagnostic::Error, 8056b8001b42bd603ef593e3cb278d8b9b9ba26ca9Daniel Dunbar "cannot compile this %0 yet"); 812c8569d5f43f7de1fb993e84c95ea571dd9ac55eChris Lattner std::string Msg = Type; 820a14eee528a901c16f0e288fbc10a3abc1660d87Chris Lattner getDiags().Report(Context.getFullLoc(S->getLocStart()), DiagID) 830a14eee528a901c16f0e288fbc10a3abc1660d87Chris Lattner << Msg << S->getSourceRange(); 842c8569d5f43f7de1fb993e84c95ea571dd9ac55eChris Lattner} 8558c3f9ec11cbe852a518bf2f83af46f938b7b852Chris Lattner 86488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar/// ErrorUnsupported - Print out an error that codegen doesn't support the 87c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner/// specified decl yet. 8890df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbarvoid CodeGenModule::ErrorUnsupported(const Decl *D, const char *Type, 8990df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar bool OmitOnError) { 9090df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar if (OmitOnError && getDiags().hasErrorOccurred()) 9190df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar return; 92488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar unsigned DiagID = getDiags().getCustomDiagID(Diagnostic::Error, 9356b8001b42bd603ef593e3cb278d8b9b9ba26ca9Daniel Dunbar "cannot compile this %0 yet"); 94c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner std::string Msg = Type; 950a14eee528a901c16f0e288fbc10a3abc1660d87Chris Lattner getDiags().Report(Context.getFullLoc(D->getLocation()), DiagID) << Msg; 96c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner} 97c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner 9804d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel DunbarLangOptions::VisibilityMode 9904d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel DunbarCodeGenModule::getDeclVisibilityMode(const Decl *D) const { 10004d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar if (const VarDecl *VD = dyn_cast<VarDecl>(D)) 10104d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar if (VD->getStorageClass() == VarDecl::PrivateExtern) 10204d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar return LangOptions::Hidden; 10304d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar 10404d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar if (const VisibilityAttr *attr = D->getAttr<VisibilityAttr>()) { 10504d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar switch (attr->getVisibility()) { 10604d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar default: assert(0 && "Unknown visibility!"); 10704d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar case VisibilityAttr::DefaultVisibility: 10804d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar return LangOptions::Default; 10904d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar case VisibilityAttr::HiddenVisibility: 11004d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar return LangOptions::Hidden; 11104d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar case VisibilityAttr::ProtectedVisibility: 11204d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar return LangOptions::Protected; 11304d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar } 1147e714cd931fa3a90bfd728318a92485aa3e95748Daniel Dunbar } 1156ab187a49a42de6d351248d8a6e0206e39743a0cDaniel Dunbar 11604d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar return getLangOptions().getVisibilityMode(); 1174f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman} 1184f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman 11904d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbarvoid CodeGenModule::setGlobalVisibility(llvm::GlobalValue *GV, 12004d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar const Decl *D) const { 12104d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar // Internal definitions always have default visibility. 122df102fcb978588d5edbc661fb5da0b6922f9ab1cChris Lattner if (GV->hasLocalLinkage()) { 1237e714cd931fa3a90bfd728318a92485aa3e95748Daniel Dunbar GV->setVisibility(llvm::GlobalValue::DefaultVisibility); 1246ab187a49a42de6d351248d8a6e0206e39743a0cDaniel Dunbar return; 1257e714cd931fa3a90bfd728318a92485aa3e95748Daniel Dunbar } 1266ab187a49a42de6d351248d8a6e0206e39743a0cDaniel Dunbar 12704d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar switch (getDeclVisibilityMode(D)) { 1287cd2e93125e2f3b6ca01b24ed0c3fd7e94683fd9Fariborz Jahanian default: assert(0 && "Unknown visibility!"); 12904d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar case LangOptions::Default: 13004d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar return GV->setVisibility(llvm::GlobalValue::DefaultVisibility); 13104d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar case LangOptions::Hidden: 13204d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar return GV->setVisibility(llvm::GlobalValue::HiddenVisibility); 13304d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar case LangOptions::Protected: 13404d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar return GV->setVisibility(llvm::GlobalValue::ProtectedVisibility); 1357cd2e93125e2f3b6ca01b24ed0c3fd7e94683fd9Fariborz Jahanian } 1367cd2e93125e2f3b6ca01b24ed0c3fd7e94683fd9Fariborz Jahanian} 1377cd2e93125e2f3b6ca01b24ed0c3fd7e94683fd9Fariborz Jahanian 1385f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// \brief Retrieves the mangled name for the given declaration. 1395f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// 1405f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// If the given declaration requires a mangled name, returns an 141c50689bd1e8788a7fc8f19070b7505ff95034979Chris Lattner/// const char* containing the mangled name. Otherwise, returns 142c50689bd1e8788a7fc8f19070b7505ff95034979Chris Lattner/// the unmangled name. 1435f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// 1446ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregorconst char *CodeGenModule::getMangledName(const NamedDecl *ND) { 145c50689bd1e8788a7fc8f19070b7505ff95034979Chris Lattner // In C, functions with no attributes never need to be mangled. Fastpath them. 146c50689bd1e8788a7fc8f19070b7505ff95034979Chris Lattner if (!getLangOptions().CPlusPlus && !ND->hasAttrs()) { 147c50689bd1e8788a7fc8f19070b7505ff95034979Chris Lattner assert(ND->getIdentifier() && "Attempt to mangle unnamed decl."); 1483c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner return ND->getNameAsCString(); 149c50689bd1e8788a7fc8f19070b7505ff95034979Chris Lattner } 150c50689bd1e8788a7fc8f19070b7505ff95034979Chris Lattner 1516ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregor llvm::SmallString<256> Name; 1526ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregor llvm::raw_svector_ostream Out(Name); 153fe345572459b69a6b680322fef504b4f8bd98dd7Daniel Dunbar if (!mangleName(ND, Context, Out)) { 154fe345572459b69a6b680322fef504b4f8bd98dd7Daniel Dunbar assert(ND->getIdentifier() && "Attempt to mangle unnamed decl."); 1553c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner return ND->getNameAsCString(); 156fe345572459b69a6b680322fef504b4f8bd98dd7Daniel Dunbar } 1575f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor 1586ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregor Name += '\0'; 15995d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson return UniqueMangledName(Name.begin(), Name.end()); 16095d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson} 16195d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson 16295d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlssonconst char *CodeGenModule::UniqueMangledName(const char *NameStart, 16395d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson const char *NameEnd) { 16495d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson assert(*(NameEnd - 1) == '\0' && "Mangled name must be null terminated!"); 16595d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson 16695d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson return MangledNames.GetOrCreateValue(NameStart, NameEnd).getKeyData(); 1675f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor} 1685f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor 1696d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner/// AddGlobalCtor - Add a function to the list that will be called before 1706d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner/// main() runs. 1716bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbarvoid CodeGenModule::AddGlobalCtor(llvm::Function * Ctor, int Priority) { 17249988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // FIXME: Type coercion of void()* types. 1736bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar GlobalCtors.push_back(std::make_pair(Ctor, Priority)); 1746d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner} 1756d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner 1766bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar/// AddGlobalDtor - Add a function to the list that will be called 1776bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar/// when the module is unloaded. 1786bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbarvoid CodeGenModule::AddGlobalDtor(llvm::Function * Dtor, int Priority) { 17949988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // FIXME: Type coercion of void()* types. 1806bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar GlobalDtors.push_back(std::make_pair(Dtor, Priority)); 1816bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar} 1826bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar 1836bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbarvoid CodeGenModule::EmitCtorList(const CtorList &Fns, const char *GlobalName) { 1846bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar // Ctor function type is void()*. 1856bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar llvm::FunctionType* CtorFTy = 1866bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar llvm::FunctionType::get(llvm::Type::VoidTy, 1876bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar std::vector<const llvm::Type*>(), 1886bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar false); 1896bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar llvm::Type *CtorPFTy = llvm::PointerType::getUnqual(CtorFTy); 1906bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar 1916bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar // Get the type of a ctor entry, { i32, void ()* }. 192572cf09ae8a78af1c56d40b016ec4cf1837163acChris Lattner llvm::StructType* CtorStructTy = 1936bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar llvm::StructType::get(llvm::Type::Int32Ty, 1946bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar llvm::PointerType::getUnqual(CtorFTy), NULL); 1956bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar 1966bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar // Construct the constructor and destructor arrays. 1976bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar std::vector<llvm::Constant*> Ctors; 1986bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar for (CtorList::const_iterator I = Fns.begin(), E = Fns.end(); I != E; ++I) { 1996bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar std::vector<llvm::Constant*> S; 2006bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar S.push_back(llvm::ConstantInt::get(llvm::Type::Int32Ty, I->second, false)); 2016bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar S.push_back(llvm::ConstantExpr::getBitCast(I->first, CtorPFTy)); 2026bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar Ctors.push_back(llvm::ConstantStruct::get(CtorStructTy, S)); 2036bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar } 2046bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar 2056bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar if (!Ctors.empty()) { 2066bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar llvm::ArrayType *AT = llvm::ArrayType::get(CtorStructTy, Ctors.size()); 2076bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar new llvm::GlobalVariable(AT, false, 208572cf09ae8a78af1c56d40b016ec4cf1837163acChris Lattner llvm::GlobalValue::AppendingLinkage, 2096bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar llvm::ConstantArray::get(AT, Ctors), 2106bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar GlobalName, 211572cf09ae8a78af1c56d40b016ec4cf1837163acChris Lattner &TheModule); 2126d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner } 2136d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner} 2146d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner 215532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begemanvoid CodeGenModule::EmitAnnotations() { 216532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman if (Annotations.empty()) 217532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman return; 218532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman 219532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman // Create a new global variable for the ConstantStruct in the Module. 220532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman llvm::Constant *Array = 221532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman llvm::ConstantArray::get(llvm::ArrayType::get(Annotations[0]->getType(), 222532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman Annotations.size()), 223532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman Annotations); 224532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman llvm::GlobalValue *gv = 225532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman new llvm::GlobalVariable(Array->getType(), false, 226532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman llvm::GlobalValue::AppendingLinkage, Array, 227532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman "llvm.global.annotations", &TheModule); 228532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman gv->setSection("llvm.metadata"); 229532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman} 230532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman 23186daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattnerstatic CodeGenModule::GVALinkage 23286daeee2d4aa6523679f07f27a826bf4c42ca95dChris LattnerGetLinkageForFunction(const FunctionDecl *FD, const LangOptions &Features) { 2337c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // "static" and attr(always_inline) functions get internal linkage. 2347c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar if (FD->getStorageClass() == FunctionDecl::Static || 2357c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar FD->hasAttr<AlwaysInlineAttr>()) 2367c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar return CodeGenModule::GVA_Internal; 2377c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 23886daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner if (!FD->isInline()) 239cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner return CodeGenModule::GVA_StrongExternal; 24086daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner 24186daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner // If the inline function explicitly has the GNU inline attribute on it, then 242cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner // force to GNUC semantics (which is strong external), regardless of language. 243cf2a7211b4785068c7efa836baab90b198a4d2a6Chris Lattner if (FD->hasAttr<GNUInlineAttr>()) 244cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner return CodeGenModule::GVA_StrongExternal; 245cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner 24686daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner // The definition of inline changes based on the language. Note that we 24786daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner // have already handled "static inline" above, with the GVA_Internal case. 248cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner if (Features.CPlusPlus) // inline and extern inline. 24986daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner return CodeGenModule::GVA_CXXInline; 25086daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner 251cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner if (FD->getStorageClass() == FunctionDecl::Extern) { 252cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner // extern inline in C99 is a strong definition. In C89, it is extern inline. 253cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner if (Features.C99) 254cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner return CodeGenModule::GVA_StrongExternal; 255cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner 256cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner // In C89 mode, an 'extern inline' works like a C99 inline function. 257cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner return CodeGenModule::GVA_C99Inline; 258cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner } 259cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner 26086daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner if (Features.C99) 26186daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner return CodeGenModule::GVA_C99Inline; 26286daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner 26386daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner // Otherwise, this is the GNU inline extension in K&R and GNU C89 mode. 264cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner return CodeGenModule::GVA_StrongExternal; 2657c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar} 2667c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 2677c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar/// SetFunctionDefinitionAttributes - Set attributes for a global. 268b97b69244a4e7916c7b8fca28fa21b36ce5b30b2Daniel Dunbar/// 269b97b69244a4e7916c7b8fca28fa21b36ce5b30b2Daniel Dunbar/// FIXME: This is currently only done for aliases and functions, but 270b97b69244a4e7916c7b8fca28fa21b36ce5b30b2Daniel Dunbar/// not for variables (these details are set in 271b97b69244a4e7916c7b8fca28fa21b36ce5b30b2Daniel Dunbar/// EmitGlobalVarDefinition for variables). 2727c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbarvoid CodeGenModule::SetFunctionDefinitionAttributes(const FunctionDecl *D, 2737c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar llvm::GlobalValue *GV) { 27486daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner GVALinkage Linkage = GetLinkageForFunction(D, Features); 2757c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 27655d6f50b23a1fd0a04b568787a25beb7537e6c9bDaniel Dunbar if (Linkage == GVA_Internal) { 2779f9427999cf69b3b89cd0ed3be16ed27a1c282c7Chris Lattner GV->setLinkage(llvm::Function::InternalLinkage); 2789f9427999cf69b3b89cd0ed3be16ed27a1c282c7Chris Lattner } else if (D->hasAttr<DLLExportAttr>()) { 2797c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar GV->setLinkage(llvm::Function::DLLExportLinkage); 28044b0bc008ee11cdee69ad12210ca7550e4fa426aChris Lattner } else if (D->hasAttr<WeakAttr>() || D->hasAttr<WeakImportAttr>()) { 28144b0bc008ee11cdee69ad12210ca7550e4fa426aChris Lattner GV->setLinkage(llvm::Function::WeakAnyLinkage); 282cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner } else if (Linkage == GVA_C99Inline) { 283cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner // In C99 mode, 'inline' functions are guaranteed to have a strong 284cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner // definition somewhere else, so we can use available_externally linkage. 285d9d049a93c55624908e81cf3927b7905efeba05fChris Lattner GV->setLinkage(llvm::Function::AvailableExternallyLinkage); 28686daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner } else if (Linkage == GVA_CXXInline) { 28786daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner // In C++, the compiler has to emit a definition in every translation unit 28886daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner // that references the function. We should use linkonce_odr because 28986daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner // a) if all references in this translation unit are optimized away, we 29086daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner // don't need to codegen it. b) if the function persists, it needs to be 29186daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner // merged with other definitions. c) C++ has the ODR, so we know the 29286daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner // definition is dependable. 29386daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner GV->setLinkage(llvm::Function::LinkOnceODRLinkage); 2947c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar } else { 295cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner assert(Linkage == GVA_StrongExternal); 296cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner // Otherwise, we have strong external linkage. 2977c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar GV->setLinkage(llvm::Function::ExternalLinkage); 2980dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar } 299d4cbda6292b321c2e7dce7f039d92918fee99b3aNuno Lopes 3007c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar SetCommonAttributes(D, GV); 301d4cbda6292b321c2e7dce7f039d92918fee99b3aNuno Lopes} 302d4cbda6292b321c2e7dce7f039d92918fee99b3aNuno Lopes 3037dbd8197040313d796282d4af06eccdf8a17319cDaniel Dunbarvoid CodeGenModule::SetLLVMFunctionAttributes(const Decl *D, 3047dbd8197040313d796282d4af06eccdf8a17319cDaniel Dunbar const CGFunctionInfo &Info, 3057dbd8197040313d796282d4af06eccdf8a17319cDaniel Dunbar llvm::Function *F) { 306761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patel AttributeListType AttributeList; 30788b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar ConstructAttributeList(Info, D, AttributeList); 308c134fcb0d7989fe6937e47e6216637647e074aefEli Friedman 309761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patel F->setAttributes(llvm::AttrListPtr::get(AttributeList.begin(), 310761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patel AttributeList.size())); 311ff4a2d9e2c1ddbf87e00e2a36ae341faf03eafb3Eli Friedman 312ff4a2d9e2c1ddbf87e00e2a36ae341faf03eafb3Eli Friedman // Set the appropriate calling convention for the Function. 313b11fa0d25d86169f0e0a29d5398116c0212bb787Daniel Dunbar if (D->hasAttr<FastCallAttr>()) 314f1c9c09e2e2220e4bbfb7e9d8adf9bf2c2406b80Anton Korobeynikov F->setCallingConv(llvm::CallingConv::X86_FastCall); 315f1c9c09e2e2220e4bbfb7e9d8adf9bf2c2406b80Anton Korobeynikov 316b11fa0d25d86169f0e0a29d5398116c0212bb787Daniel Dunbar if (D->hasAttr<StdCallAttr>()) 317f1c9c09e2e2220e4bbfb7e9d8adf9bf2c2406b80Anton Korobeynikov F->setCallingConv(llvm::CallingConv::X86_StdCall); 318f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar} 319f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar 3207c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbarvoid CodeGenModule::SetLLVMFunctionAttributesForDefinition(const Decl *D, 3217c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar llvm::Function *F) { 32274ac74ae244c501027924c99f2a33559a1e23b53Daniel Dunbar if (!Features.Exceptions && !Features.ObjCNonFragileABI) 323f93349f3ec4d69eafba42436c33aaa91bfca7e70Daniel Dunbar F->addFnAttr(llvm::Attribute::NoUnwind); 324af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar 325b11fa0d25d86169f0e0a29d5398116c0212bb787Daniel Dunbar if (D->hasAttr<AlwaysInlineAttr>()) 326af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar F->addFnAttr(llvm::Attribute::AlwaysInline); 32781ebbde0fb30a40df0f5e913d8a1f71c383d271aAnders Carlsson 328b11fa0d25d86169f0e0a29d5398116c0212bb787Daniel Dunbar if (D->hasAttr<NoinlineAttr>()) 32981ebbde0fb30a40df0f5e913d8a1f71c383d271aAnders Carlsson F->addFnAttr(llvm::Attribute::NoInline); 330f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar} 331f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar 3327c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbarvoid CodeGenModule::SetCommonAttributes(const Decl *D, 3337c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar llvm::GlobalValue *GV) { 3347c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar setGlobalVisibility(GV, D); 3357c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 3367c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar if (D->hasAttr<UsedAttr>()) 3377c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar AddUsedGlobal(GV); 3387c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 3397c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar if (const SectionAttr *SA = D->getAttr<SectionAttr>()) 3407c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar GV->setSection(SA->getName()); 3417c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar} 3427c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 3430e4f40e1bbc4dce16bbb9870300a435419f1b3d5Daniel Dunbarvoid CodeGenModule::SetInternalFunctionAttributes(const Decl *D, 3440e4f40e1bbc4dce16bbb9870300a435419f1b3d5Daniel Dunbar llvm::Function *F, 3450e4f40e1bbc4dce16bbb9870300a435419f1b3d5Daniel Dunbar const CGFunctionInfo &FI) { 3460e4f40e1bbc4dce16bbb9870300a435419f1b3d5Daniel Dunbar SetLLVMFunctionAttributes(D, FI, F); 3470e4f40e1bbc4dce16bbb9870300a435419f1b3d5Daniel Dunbar SetLLVMFunctionAttributesForDefinition(D, F); 3487c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 3497c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar F->setLinkage(llvm::Function::InternalLinkage); 3507c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 3510e4f40e1bbc4dce16bbb9870300a435419f1b3d5Daniel Dunbar SetCommonAttributes(D, F); 352f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar} 353f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar 354f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbarvoid CodeGenModule::SetFunctionAttributes(const FunctionDecl *FD, 355f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar llvm::Function *F) { 3567dbd8197040313d796282d4af06eccdf8a17319cDaniel Dunbar SetLLVMFunctionAttributes(FD, getTypes().getFunctionInfo(FD), F); 35745c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar 3587c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // Only a few attributes are set on declarations; these may later be 3597c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // overridden by a definition. 3607c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 3617c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar if (FD->hasAttr<DLLImportAttr>()) { 3627c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar F->setLinkage(llvm::Function::DLLImportLinkage); 3637c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar } else if (FD->hasAttr<WeakAttr>() || FD->hasAttr<WeakImportAttr>()) { 3647c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // "extern_weak" is overloaded in LLVM; we probably should have 3657c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // separate linkage types for this. 3667c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar F->setLinkage(llvm::Function::ExternalWeakLinkage); 3677c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar } else { 3687c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar F->setLinkage(llvm::Function::ExternalLinkage); 3697c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar } 3707c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 3717c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar if (const SectionAttr *SA = FD->getAttr<SectionAttr>()) 3727c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar F->setSection(SA->getName()); 373219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar} 374219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 3750269871c9cba493f76237175ab60313406f3bafaDaniel Dunbarvoid CodeGenModule::AddUsedGlobal(llvm::GlobalValue *GV) { 3760269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar assert(!GV->isDeclaration() && 3770269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar "Only globals with definition can force usage."); 37835f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner LLVMUsed.push_back(GV); 3790269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar} 3800269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar 3810269871c9cba493f76237175ab60313406f3bafaDaniel Dunbarvoid CodeGenModule::EmitLLVMUsed() { 3820269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar // Don't create llvm.used if there is no need. 3830269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar if (LLVMUsed.empty()) 3840269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar return; 3850269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar 38635f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner llvm::Type *i8PTy = llvm::PointerType::getUnqual(llvm::Type::Int8Ty); 38735f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner llvm::ArrayType *ATy = llvm::ArrayType::get(i8PTy, LLVMUsed.size()); 38835f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner 38935f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner // Convert LLVMUsed to what ConstantArray needs. 39035f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner std::vector<llvm::Constant*> UsedArray; 39135f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner UsedArray.resize(LLVMUsed.size()); 39235f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner for (unsigned i = 0, e = LLVMUsed.size(); i != e; ++i) { 39335f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner UsedArray[i] = 39435f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner llvm::ConstantExpr::getBitCast(cast<llvm::Constant>(&*LLVMUsed[i]), i8PTy); 39535f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner } 39635f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner 3970269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar llvm::GlobalVariable *GV = 3980269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar new llvm::GlobalVariable(ATy, false, 3990269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar llvm::GlobalValue::AppendingLinkage, 40035f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner llvm::ConstantArray::get(ATy, UsedArray), 4010269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar "llvm.used", &getModule()); 4020269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar 4030269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar GV->setSection("llvm.metadata"); 4040269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar} 4050269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar 4060269871c9cba493f76237175ab60313406f3bafaDaniel Dunbarvoid CodeGenModule::EmitDeferred() { 40767b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Emit code for any potentially referenced deferred decls. Since a 40867b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // previously unused static decl may become used during the generation of code 40967b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // for a static function, iterate until no changes are made. 41067b00520c8f5b48fad722b790d87fea6be764efeChris Lattner while (!DeferredDeclsToEmit.empty()) { 41167b00520c8f5b48fad722b790d87fea6be764efeChris Lattner const ValueDecl *D = DeferredDeclsToEmit.back(); 41267b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDeclsToEmit.pop_back(); 41367b00520c8f5b48fad722b790d87fea6be764efeChris Lattner 41467b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // The mangled name for the decl must have been emitted in GlobalDeclMap. 41567b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Look it up to see if it was defined with a stronger definition (e.g. an 41667b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // extern inline function with a strong function redefinition). If so, 41767b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // just ignore the deferred decl. 41867b00520c8f5b48fad722b790d87fea6be764efeChris Lattner llvm::GlobalValue *CGRef = GlobalDeclMap[getMangledName(D)]; 41967b00520c8f5b48fad722b790d87fea6be764efeChris Lattner assert(CGRef && "Deferred decl wasn't referenced?"); 420b723f7520bcce5f13ccaae557c16a1e7133b6908Anders Carlsson 42167b00520c8f5b48fad722b790d87fea6be764efeChris Lattner if (!CGRef->isDeclaration()) 42267b00520c8f5b48fad722b790d87fea6be764efeChris Lattner continue; 42367b00520c8f5b48fad722b790d87fea6be764efeChris Lattner 42467b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Otherwise, emit the definition and move on to the next one. 42567b00520c8f5b48fad722b790d87fea6be764efeChris Lattner EmitGlobalDefinition(D); 42667b00520c8f5b48fad722b790d87fea6be764efeChris Lattner } 4275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 4285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 4298bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// EmitAnnotateAttr - Generate the llvm::ConstantStruct which contains the 4308bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// annotation information for a given GlobalValue. The annotation struct is 4318bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// {i8 *, i8 *, i8 *, i32}. The first field is a constant expression, the 4323c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar/// GlobalValue being annotated. The second field is the constant string 4338bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// created from the AnnotateAttr's annotation. The third field is a constant 4348bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// string containing the name of the translation unit. The fourth field is 4358bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// the line number in the file of the annotated value declaration. 4368bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// 4378bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// FIXME: this does not unique the annotation string constants, as llvm-gcc 4388bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// appears to. 4398bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// 4408bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begemanllvm::Constant *CodeGenModule::EmitAnnotateAttr(llvm::GlobalValue *GV, 4418bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman const AnnotateAttr *AA, 4428bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman unsigned LineNo) { 4438bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::Module *M = &getModule(); 4448bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman 4458bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman // get [N x i8] constants for the annotation string, and the filename string 4468bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman // which are the 2nd and 3rd elements of the global annotation structure. 4478bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman const llvm::Type *SBP = llvm::PointerType::getUnqual(llvm::Type::Int8Ty); 4488bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::Constant *anno = llvm::ConstantArray::get(AA->getAnnotation(), true); 4498bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::Constant *unit = llvm::ConstantArray::get(M->getModuleIdentifier(), 4508bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman true); 4518bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman 4528bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman // Get the two global values corresponding to the ConstantArrays we just 4538bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman // created to hold the bytes of the strings. 4548e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar const char *StringPrefix = getContext().Target.getStringSymbolPrefix(true); 4558bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::GlobalValue *annoGV = 4568bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman new llvm::GlobalVariable(anno->getType(), false, 4578bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::GlobalValue::InternalLinkage, anno, 4588e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar GV->getName() + StringPrefix, M); 4598bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman // translation unit name string, emitted into the llvm.metadata section. 4608bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::GlobalValue *unitGV = 4618bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman new llvm::GlobalVariable(unit->getType(), false, 4628e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar llvm::GlobalValue::InternalLinkage, unit, 4638e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar StringPrefix, M); 4648bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman 46557d5cee133495bc21d1abdbce45ab05a79274a23Daniel Dunbar // Create the ConstantStruct for the global annotation. 4668bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::Constant *Fields[4] = { 4678bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::ConstantExpr::getBitCast(GV, SBP), 4688bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::ConstantExpr::getBitCast(annoGV, SBP), 4698bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::ConstantExpr::getBitCast(unitGV, SBP), 4708bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::ConstantInt::get(llvm::Type::Int32Ty, LineNo) 4718bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman }; 4728bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman return llvm::ConstantStruct::get(Fields, 4, false); 4738bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman} 4748bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman 47573241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbarbool CodeGenModule::MayDeferGeneration(const ValueDecl *Global) { 4765c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar // Never defer when EmitAllDecls is specified or the decl has 4775c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar // attribute used. 478b11fa0d25d86169f0e0a29d5398116c0212bb787Daniel Dunbar if (Features.EmitAllDecls || Global->hasAttr<UsedAttr>()) 47973241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar return false; 480bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 481bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(Global)) { 48273241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar // Constructors and destructors should never be deferred. 483b11fa0d25d86169f0e0a29d5398116c0212bb787Daniel Dunbar if (FD->hasAttr<ConstructorAttr>() || FD->hasAttr<DestructorAttr>()) 48473241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar return false; 48573241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar 48686daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner GVALinkage Linkage = GetLinkageForFunction(FD, Features); 487dbb5a376c8b9272813a30c5519031e9ea2fb071fChris Lattner 488dbb5a376c8b9272813a30c5519031e9ea2fb071fChris Lattner // static, static inline, always_inline, and extern inline functions can 48986daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner // always be deferred. Normal inline functions can be deferred in C99/C++. 490cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner if (Linkage == GVA_Internal || Linkage == GVA_C99Inline || 491cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner Linkage == GVA_CXXInline) 492dbb5a376c8b9272813a30c5519031e9ea2fb071fChris Lattner return true; 493dbb5a376c8b9272813a30c5519031e9ea2fb071fChris Lattner return false; 49473241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar } 495dbb5a376c8b9272813a30c5519031e9ea2fb071fChris Lattner 496dbb5a376c8b9272813a30c5519031e9ea2fb071fChris Lattner const VarDecl *VD = cast<VarDecl>(Global); 497dbb5a376c8b9272813a30c5519031e9ea2fb071fChris Lattner assert(VD->isFileVarDecl() && "Invalid decl"); 498b6c8c8bd8d362c8a6cdb767415b0d21e62b77eb2Douglas Gregor 499dbb5a376c8b9272813a30c5519031e9ea2fb071fChris Lattner return VD->getStorageClass() == VarDecl::Static; 50073241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar} 50173241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar 50273241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbarvoid CodeGenModule::EmitGlobal(const ValueDecl *Global) { 503bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // If this is an alias definition (which otherwise looks like a declaration) 504bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // emit it now. 505b11fa0d25d86169f0e0a29d5398116c0212bb787Daniel Dunbar if (Global->hasAttr<AliasAttr>()) 506bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner return EmitAliasDefinition(Global); 507219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 50867b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Ignore declarations, they will be emitted on their first use. 5095e1e1f95c98b1add70c238093bbd5dc8d4f9c4e9Daniel Dunbar if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(Global)) { 51073241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar // Forward declarations are emitted lazily on first use. 51173241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar if (!FD->isThisDeclarationADefinition()) 51273241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar return; 5130269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar } else { 5140269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar const VarDecl *VD = cast<VarDecl>(Global); 515bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar assert(VD->isFileVarDecl() && "Cannot emit local var decl as global."); 516bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 517b6c8c8bd8d362c8a6cdb767415b0d21e62b77eb2Douglas Gregor // In C++, if this is marked "extern", defer code generation. 518b6c8c8bd8d362c8a6cdb767415b0d21e62b77eb2Douglas Gregor if (getLangOptions().CPlusPlus && 519b6c8c8bd8d362c8a6cdb767415b0d21e62b77eb2Douglas Gregor VD->getStorageClass() == VarDecl::Extern && !VD->getInit()) 520b6c8c8bd8d362c8a6cdb767415b0d21e62b77eb2Douglas Gregor return; 521b6c8c8bd8d362c8a6cdb767415b0d21e62b77eb2Douglas Gregor 522b6c8c8bd8d362c8a6cdb767415b0d21e62b77eb2Douglas Gregor // In C, if this isn't a definition, defer code generation. 523b6c8c8bd8d362c8a6cdb767415b0d21e62b77eb2Douglas Gregor if (!getLangOptions().CPlusPlus && !VD->getInit()) 52473241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar return; 5254c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman } 5264c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman 52767b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Defer code generation when possible if this is a static definition, inline 52867b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // function etc. These we only want to emit if they are used. 52973241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar if (MayDeferGeneration(Global)) { 53067b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // If the value has already been used, add it directly to the 53167b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // DeferredDeclsToEmit list. 53267b00520c8f5b48fad722b790d87fea6be764efeChris Lattner const char *MangledName = getMangledName(Global); 53367b00520c8f5b48fad722b790d87fea6be764efeChris Lattner if (GlobalDeclMap.count(MangledName)) 53467b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDeclsToEmit.push_back(Global); 53567b00520c8f5b48fad722b790d87fea6be764efeChris Lattner else { 53667b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Otherwise, remember that we saw a deferred decl with this name. The 53767b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // first use of the mangled name will cause it to move into 53867b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // DeferredDeclsToEmit. 53967b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDecls[MangledName] = Global; 54067b00520c8f5b48fad722b790d87fea6be764efeChris Lattner } 541bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar return; 542bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } 543bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 544bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar // Otherwise emit the definition. 545bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar EmitGlobalDefinition(Global); 5464c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman} 5474c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman 548bd012ff1fa088181646a784f385b28867372d434Daniel Dunbarvoid CodeGenModule::EmitGlobalDefinition(const ValueDecl *D) { 549bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 550bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar EmitGlobalFunctionDefinition(FD); 551bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } else if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { 552bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar EmitGlobalVarDefinition(VD); 553bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } else { 554bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar assert(0 && "Invalid argument to EmitGlobalDefinition()"); 555bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } 556bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar} 557bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 55874391b48b4791cded373683a3baf67314f358d50Chris Lattner/// GetOrCreateLLVMFunction - If the specified mangled name is not in the 55974391b48b4791cded373683a3baf67314f358d50Chris Lattner/// module, create and return an llvm Function with the specified type. If there 56074391b48b4791cded373683a3baf67314f358d50Chris Lattner/// is something in the module with the specified name, return it potentially 56174391b48b4791cded373683a3baf67314f358d50Chris Lattner/// bitcasted to the right type. 56274391b48b4791cded373683a3baf67314f358d50Chris Lattner/// 56374391b48b4791cded373683a3baf67314f358d50Chris Lattner/// If D is non-null, it specifies a decl that correspond to this. This is used 56474391b48b4791cded373683a3baf67314f358d50Chris Lattner/// to set the attributes on the function when it is first created. 56574391b48b4791cded373683a3baf67314f358d50Chris Lattnerllvm::Constant *CodeGenModule::GetOrCreateLLVMFunction(const char *MangledName, 56674391b48b4791cded373683a3baf67314f358d50Chris Lattner const llvm::Type *Ty, 56774391b48b4791cded373683a3baf67314f358d50Chris Lattner const FunctionDecl *D) { 5680558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner // Lookup the entry, lazily creating it if necessary. 5690558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner llvm::GlobalValue *&Entry = GlobalDeclMap[MangledName]; 5700558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner if (Entry) { 5710558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner if (Entry->getType()->getElementType() == Ty) 5720558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner return Entry; 5730558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner 5740558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner // Make sure the result is of the correct type. 5750558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner const llvm::Type *PTy = llvm::PointerType::getUnqual(Ty); 5760558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner return llvm::ConstantExpr::getBitCast(Entry, PTy); 5770558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner } 5780558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner 57967b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // This is the first use or definition of a mangled name. If there is a 58067b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // deferred decl with this name, remember that we need to emit it at the end 58167b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // of the file. 58267b00520c8f5b48fad722b790d87fea6be764efeChris Lattner llvm::DenseMap<const char*, const ValueDecl*>::iterator DDI = 58374391b48b4791cded373683a3baf67314f358d50Chris Lattner DeferredDecls.find(MangledName); 58467b00520c8f5b48fad722b790d87fea6be764efeChris Lattner if (DDI != DeferredDecls.end()) { 58567b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Move the potentially referenced deferred decl to the DeferredDeclsToEmit 58667b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // list, and remove it from DeferredDecls (since we don't need it anymore). 58767b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDeclsToEmit.push_back(DDI->second); 58867b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDecls.erase(DDI); 58967b00520c8f5b48fad722b790d87fea6be764efeChris Lattner } 59067b00520c8f5b48fad722b790d87fea6be764efeChris Lattner 5910558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner // This function doesn't have a complete type (for example, the return 5920558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner // type is an incomplete struct). Use a fake type instead, and make 5930558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner // sure not to try to set attributes. 5940558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner bool ShouldSetAttributes = true; 5950558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner if (!isa<llvm::FunctionType>(Ty)) { 5960558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner Ty = llvm::FunctionType::get(llvm::Type::VoidTy, 5970558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner std::vector<const llvm::Type*>(), false); 5980558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner ShouldSetAttributes = false; 5990558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner } 6000558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner llvm::Function *F = llvm::Function::Create(cast<llvm::FunctionType>(Ty), 6010558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner llvm::Function::ExternalLinkage, 602d972678a053d4785772b75cf6c8d4ab74ac2c7f6Chris Lattner "", &getModule()); 603d972678a053d4785772b75cf6c8d4ab74ac2c7f6Chris Lattner F->setName(MangledName); 60474391b48b4791cded373683a3baf67314f358d50Chris Lattner if (D && ShouldSetAttributes) 6050558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner SetFunctionAttributes(D, F); 6060558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner Entry = F; 6070558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner return F; 6080558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner} 6090558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner 61074391b48b4791cded373683a3baf67314f358d50Chris Lattner/// GetAddrOfFunction - Return the address of the given function. If Ty is 61174391b48b4791cded373683a3baf67314f358d50Chris Lattner/// non-null, then this function will use the specified type if it has to 61274391b48b4791cded373683a3baf67314f358d50Chris Lattner/// create it (this occurs when we see a definition of the function). 61374391b48b4791cded373683a3baf67314f358d50Chris Lattnerllvm::Constant *CodeGenModule::GetAddrOfFunction(const FunctionDecl *D, 61474391b48b4791cded373683a3baf67314f358d50Chris Lattner const llvm::Type *Ty) { 61574391b48b4791cded373683a3baf67314f358d50Chris Lattner // If there was no specific requested type, just convert it now. 61674391b48b4791cded373683a3baf67314f358d50Chris Lattner if (!Ty) 61774391b48b4791cded373683a3baf67314f358d50Chris Lattner Ty = getTypes().ConvertType(D->getType()); 61874391b48b4791cded373683a3baf67314f358d50Chris Lattner return GetOrCreateLLVMFunction(getMangledName(D), Ty, D); 61974391b48b4791cded373683a3baf67314f358d50Chris Lattner} 62077ba708819285931932ecd33691a672bb59d221aEli Friedman 62174391b48b4791cded373683a3baf67314f358d50Chris Lattner/// CreateRuntimeFunction - Create a new runtime function with the specified 62274391b48b4791cded373683a3baf67314f358d50Chris Lattner/// type and name. 62374391b48b4791cded373683a3baf67314f358d50Chris Lattnerllvm::Constant * 62474391b48b4791cded373683a3baf67314f358d50Chris LattnerCodeGenModule::CreateRuntimeFunction(const llvm::FunctionType *FTy, 62574391b48b4791cded373683a3baf67314f358d50Chris Lattner const char *Name) { 62674391b48b4791cded373683a3baf67314f358d50Chris Lattner // Convert Name to be a uniqued string from the IdentifierInfo table. 62774391b48b4791cded373683a3baf67314f358d50Chris Lattner Name = getContext().Idents.get(Name).getName(); 62874391b48b4791cded373683a3baf67314f358d50Chris Lattner return GetOrCreateLLVMFunction(Name, FTy, 0); 62974391b48b4791cded373683a3baf67314f358d50Chris Lattner} 630bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 63174391b48b4791cded373683a3baf67314f358d50Chris Lattner/// GetOrCreateLLVMGlobal - If the specified mangled name is not in the module, 63274391b48b4791cded373683a3baf67314f358d50Chris Lattner/// create and return an llvm GlobalVariable with the specified type. If there 63374391b48b4791cded373683a3baf67314f358d50Chris Lattner/// is something in the module with the specified name, return it potentially 63474391b48b4791cded373683a3baf67314f358d50Chris Lattner/// bitcasted to the right type. 63574391b48b4791cded373683a3baf67314f358d50Chris Lattner/// 63674391b48b4791cded373683a3baf67314f358d50Chris Lattner/// If D is non-null, it specifies a decl that correspond to this. This is used 63774391b48b4791cded373683a3baf67314f358d50Chris Lattner/// to set the attributes on the global when it is first created. 63874391b48b4791cded373683a3baf67314f358d50Chris Lattnerllvm::Constant *CodeGenModule::GetOrCreateLLVMGlobal(const char *MangledName, 63974391b48b4791cded373683a3baf67314f358d50Chris Lattner const llvm::PointerType*Ty, 64074391b48b4791cded373683a3baf67314f358d50Chris Lattner const VarDecl *D) { 6413c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar // Lookup the entry, lazily creating it if necessary. 6425d4f5c724533b994de05df49ae259120482ec366Chris Lattner llvm::GlobalValue *&Entry = GlobalDeclMap[MangledName]; 64399b53613ebe2c59d41030e987962c1ed101b2efeChris Lattner if (Entry) { 64474391b48b4791cded373683a3baf67314f358d50Chris Lattner if (Entry->getType() == Ty) 645570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner return Entry; 646570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner 64799b53613ebe2c59d41030e987962c1ed101b2efeChris Lattner // Make sure the result is of the correct type. 64874391b48b4791cded373683a3baf67314f358d50Chris Lattner return llvm::ConstantExpr::getBitCast(Entry, Ty); 64999b53613ebe2c59d41030e987962c1ed101b2efeChris Lattner } 65067b00520c8f5b48fad722b790d87fea6be764efeChris Lattner 65167b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // This is the first use or definition of a mangled name. If there is a 65267b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // deferred decl with this name, remember that we need to emit it at the end 65367b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // of the file. 65467b00520c8f5b48fad722b790d87fea6be764efeChris Lattner llvm::DenseMap<const char*, const ValueDecl*>::iterator DDI = 65567b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDecls.find(MangledName); 65667b00520c8f5b48fad722b790d87fea6be764efeChris Lattner if (DDI != DeferredDecls.end()) { 65767b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Move the potentially referenced deferred decl to the DeferredDeclsToEmit 65867b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // list, and remove it from DeferredDecls (since we don't need it anymore). 65967b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDeclsToEmit.push_back(DDI->second); 66067b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDecls.erase(DDI); 66167b00520c8f5b48fad722b790d87fea6be764efeChris Lattner } 66267b00520c8f5b48fad722b790d87fea6be764efeChris Lattner 66399b53613ebe2c59d41030e987962c1ed101b2efeChris Lattner llvm::GlobalVariable *GV = 66474391b48b4791cded373683a3baf67314f358d50Chris Lattner new llvm::GlobalVariable(Ty->getElementType(), false, 66599b53613ebe2c59d41030e987962c1ed101b2efeChris Lattner llvm::GlobalValue::ExternalLinkage, 666d972678a053d4785772b75cf6c8d4ab74ac2c7f6Chris Lattner 0, "", &getModule(), 66756ebe5082da7411fb37479e230b52735f77cff35Eli Friedman false, Ty->getAddressSpace()); 668d972678a053d4785772b75cf6c8d4ab74ac2c7f6Chris Lattner GV->setName(MangledName); 66949988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar 67099b53613ebe2c59d41030e987962c1ed101b2efeChris Lattner // Handle things which are present even on external declarations. 67174391b48b4791cded373683a3baf67314f358d50Chris Lattner if (D) { 67274391b48b4791cded373683a3baf67314f358d50Chris Lattner // FIXME: This code is overly simple and should be merged with 67374391b48b4791cded373683a3baf67314f358d50Chris Lattner // other global handling. 67474391b48b4791cded373683a3baf67314f358d50Chris Lattner GV->setConstant(D->getType().isConstant(Context)); 67549988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar 67674391b48b4791cded373683a3baf67314f358d50Chris Lattner // FIXME: Merge with other attribute handling code. 67774391b48b4791cded373683a3baf67314f358d50Chris Lattner if (D->getStorageClass() == VarDecl::PrivateExtern) 67804d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar GV->setVisibility(llvm::GlobalValue::HiddenVisibility); 67949988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar 680b11fa0d25d86169f0e0a29d5398116c0212bb787Daniel Dunbar if (D->hasAttr<WeakAttr>() || D->hasAttr<WeakImportAttr>()) 68174391b48b4791cded373683a3baf67314f358d50Chris Lattner GV->setLinkage(llvm::GlobalValue::ExternalWeakLinkage); 68256ebe5082da7411fb37479e230b52735f77cff35Eli Friedman 68356ebe5082da7411fb37479e230b52735f77cff35Eli Friedman GV->setThreadLocal(D->isThreadSpecified()); 68474391b48b4791cded373683a3baf67314f358d50Chris Lattner } 68574391b48b4791cded373683a3baf67314f358d50Chris Lattner 68674391b48b4791cded373683a3baf67314f358d50Chris Lattner return Entry = GV; 68774391b48b4791cded373683a3baf67314f358d50Chris Lattner} 688eda9a5ec380f172f4e0063744eb796144a125480Daniel Dunbar 689eda9a5ec380f172f4e0063744eb796144a125480Daniel Dunbar 69074391b48b4791cded373683a3baf67314f358d50Chris Lattner/// GetAddrOfGlobalVar - Return the llvm::Constant for the address of the 69174391b48b4791cded373683a3baf67314f358d50Chris Lattner/// given global variable. If Ty is non-null and if the global doesn't exist, 69274391b48b4791cded373683a3baf67314f358d50Chris Lattner/// then it will be greated with the specified type instead of whatever the 69374391b48b4791cded373683a3baf67314f358d50Chris Lattner/// normal requested type would be. 69474391b48b4791cded373683a3baf67314f358d50Chris Lattnerllvm::Constant *CodeGenModule::GetAddrOfGlobalVar(const VarDecl *D, 69574391b48b4791cded373683a3baf67314f358d50Chris Lattner const llvm::Type *Ty) { 69674391b48b4791cded373683a3baf67314f358d50Chris Lattner assert(D->hasGlobalStorage() && "Not a global variable"); 69774391b48b4791cded373683a3baf67314f358d50Chris Lattner QualType ASTTy = D->getType(); 69874391b48b4791cded373683a3baf67314f358d50Chris Lattner if (Ty == 0) 69974391b48b4791cded373683a3baf67314f358d50Chris Lattner Ty = getTypes().ConvertTypeForMem(ASTTy); 70074391b48b4791cded373683a3baf67314f358d50Chris Lattner 70174391b48b4791cded373683a3baf67314f358d50Chris Lattner const llvm::PointerType *PTy = 70274391b48b4791cded373683a3baf67314f358d50Chris Lattner llvm::PointerType::get(Ty, ASTTy.getAddressSpace()); 70374391b48b4791cded373683a3baf67314f358d50Chris Lattner return GetOrCreateLLVMGlobal(getMangledName(D), PTy, D); 70474391b48b4791cded373683a3baf67314f358d50Chris Lattner} 7053f75c43bd77e063342bc888ac276daf64ba0ce07Daniel Dunbar 70674391b48b4791cded373683a3baf67314f358d50Chris Lattner/// CreateRuntimeVariable - Create a new runtime global variable with the 70774391b48b4791cded373683a3baf67314f358d50Chris Lattner/// specified type and name. 70874391b48b4791cded373683a3baf67314f358d50Chris Lattnerllvm::Constant * 70974391b48b4791cded373683a3baf67314f358d50Chris LattnerCodeGenModule::CreateRuntimeVariable(const llvm::Type *Ty, 71074391b48b4791cded373683a3baf67314f358d50Chris Lattner const char *Name) { 71174391b48b4791cded373683a3baf67314f358d50Chris Lattner // Convert Name to be a uniqued string from the IdentifierInfo table. 71274391b48b4791cded373683a3baf67314f358d50Chris Lattner Name = getContext().Idents.get(Name).getName(); 71374391b48b4791cded373683a3baf67314f358d50Chris Lattner return GetOrCreateLLVMGlobal(Name, llvm::PointerType::getUnqual(Ty), 0); 714bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar} 715bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 71603f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbarvoid CodeGenModule::EmitTentativeDefinition(const VarDecl *D) { 71703f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar assert(!D->getInit() && "Cannot emit definite definitions here!"); 71803f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar 71903f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // See if we have already defined this (as a variable), if so we do 72003f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // not need to do anything. 72103f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar llvm::GlobalValue *GV = GlobalDeclMap[getMangledName(D)]; 722b6c8c8bd8d362c8a6cdb767415b0d21e62b77eb2Douglas Gregor if (!GV && MayDeferGeneration(D)) // this variable was never referenced 723b6c8c8bd8d362c8a6cdb767415b0d21e62b77eb2Douglas Gregor return; 724b6c8c8bd8d362c8a6cdb767415b0d21e62b77eb2Douglas Gregor 72503f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar if (llvm::GlobalVariable *Var = dyn_cast_or_null<llvm::GlobalVariable>(GV)) 72603f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar if (Var->hasInitializer()) 72703f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar return; 72803f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar 72903f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar EmitGlobalVarDefinition(D); 73003f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar} 73103f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar 732bd012ff1fa088181646a784f385b28867372d434Daniel Dunbarvoid CodeGenModule::EmitGlobalVarDefinition(const VarDecl *D) { 7338f32f7189b12f67aa4a19bc7c3855b599980eca0Chris Lattner llvm::Constant *Init = 0; 73477ba708819285931932ecd33691a672bb59d221aEli Friedman QualType ASTTy = D->getType(); 735b75863d53b8a2bbf0ece8e6df2b6e5be7f3896c4Chris Lattner 7368f32f7189b12f67aa4a19bc7c3855b599980eca0Chris Lattner if (D->getInit() == 0) { 737cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman // This is a tentative definition; tentative definitions are 73803f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // implicitly initialized with { 0 }. 73903f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // 74003f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // Note that tentative definitions are only emitted at the end of 74103f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // a translation unit, so they should never have incomplete 74203f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // type. In addition, EmitTentativeDefinition makes sure that we 74303f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // never attempt to emit a tentative definition if a real one 74403f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // exists. A use may still exists, however, so we still may need 74503f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // to do a RAUW. 74603f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar assert(!ASTTy->isIncompleteType() && "Unexpected incomplete type"); 74703f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar Init = llvm::Constant::getNullValue(getTypes().ConvertTypeForMem(ASTTy)); 74877ba708819285931932ecd33691a672bb59d221aEli Friedman } else { 749e9352cc9818ba59e7cf88500ef048991c90f3821Anders Carlsson Init = EmitConstantExpr(D->getInit(), D->getType()); 7506e656f45ae04b415ba7a4c0c25e55633e2d0ecd0Eli Friedman if (!Init) { 751232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar ErrorUnsupported(D, "static initializer"); 7526e656f45ae04b415ba7a4c0c25e55633e2d0ecd0Eli Friedman QualType T = D->getInit()->getType(); 7536e656f45ae04b415ba7a4c0c25e55633e2d0ecd0Eli Friedman Init = llvm::UndefValue::get(getTypes().ConvertType(T)); 7546e656f45ae04b415ba7a4c0c25e55633e2d0ecd0Eli Friedman } 7558f32f7189b12f67aa4a19bc7c3855b599980eca0Chris Lattner } 7568e53e720b3d7c962e91138a130dbd5d6c2def0e5Devang Patel 7572d58406872e5af0c924623d9f7c194c4f09936d3Chris Lattner const llvm::Type* InitType = Init->getType(); 758570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner llvm::Constant *Entry = GetAddrOfGlobalVar(D, InitType); 759570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner 760570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // Strip off a bitcast if we got one back. 761570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner if (llvm::ConstantExpr *CE = dyn_cast<llvm::ConstantExpr>(Entry)) { 762570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner assert(CE->getOpcode() == llvm::Instruction::BitCast); 763570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner Entry = CE->getOperand(0); 764570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner } 7653c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar 766570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // Entry is now either a Function or GlobalVariable. 767570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner llvm::GlobalVariable *GV = dyn_cast<llvm::GlobalVariable>(Entry); 768570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner 769570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // We have a definition after a declaration with the wrong type. 770570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // We must make a new GlobalVariable* and update everything that used OldGV 771570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // (a declaration or tentative definition) with the new GlobalVariable* 772570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // (which will be a definition). 773570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // 774570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // This happens if there is a prototype for a global (e.g. 775570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // "extern int x[];") and then a definition of a different type (e.g. 776570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // "int x[10];"). This also happens when an initializer has a different type 777570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // from the type of the global (this happens with unions). 778570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner if (GV == 0 || 779570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner GV->getType()->getElementType() != InitType || 780570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner GV->getType()->getAddressSpace() != ASTTy.getAddressSpace()) { 781570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner 782570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // Remove the old entry from GlobalDeclMap so that we'll create a new one. 783570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner GlobalDeclMap.erase(getMangledName(D)); 784232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar 785570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // Make a new global with the correct type, this is now guaranteed to work. 786570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner GV = cast<llvm::GlobalVariable>(GetAddrOfGlobalVar(D, InitType)); 7870558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner GV->takeName(cast<llvm::GlobalValue>(Entry)); 7880558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner 78977ba708819285931932ecd33691a672bb59d221aEli Friedman // Replace all uses of the old global with the new global 79077ba708819285931932ecd33691a672bb59d221aEli Friedman llvm::Constant *NewPtrForOldDecl = 791570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner llvm::ConstantExpr::getBitCast(GV, Entry->getType()); 792570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner Entry->replaceAllUsesWith(NewPtrForOldDecl); 79377ba708819285931932ecd33691a672bb59d221aEli Friedman 79477ba708819285931932ecd33691a672bb59d221aEli Friedman // Erase the old global, since it is no longer used. 795570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner cast<llvm::GlobalValue>(Entry)->eraseFromParent(); 79677ba708819285931932ecd33691a672bb59d221aEli Friedman } 79777ba708819285931932ecd33691a672bb59d221aEli Friedman 7988bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman if (const AnnotateAttr *AA = D->getAttr<AnnotateAttr>()) { 7998bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman SourceManager &SM = Context.getSourceManager(); 8008bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman AddAnnotation(EmitAnnotateAttr(GV, AA, 801f7cf85b330bedd2877e1371fb0a83e99751ae162Chris Lattner SM.getInstantiationLineNumber(D->getLocation()))); 8028bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman } 8038bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman 80488a69ad80e1550e9932666e6efa050a5b1223889Chris Lattner GV->setInitializer(Init); 805b381aac9bae6d608c72267dd0ed08ec6369e94e4Nuno Lopes GV->setConstant(D->getType().isConstant(Context)); 8060de40af3a3aa14e3854c0eafeabd08f6762801f9Eli Friedman GV->setAlignment(getContext().getDeclAlignInBytes(D)); 80708d7802a406ee4a7cc18e8fce0c137b8c410ea7cEli Friedman 80888a69ad80e1550e9932666e6efa050a5b1223889Chris Lattner // Set the llvm linkage type as appropriate. 8098fabd78f1976243cb223fb3e969c6f317d1ae44dChris Lattner if (D->getStorageClass() == VarDecl::Static) 8108fabd78f1976243cb223fb3e969c6f317d1ae44dChris Lattner GV->setLinkage(llvm::Function::InternalLinkage); 811b11fa0d25d86169f0e0a29d5398116c0212bb787Daniel Dunbar else if (D->hasAttr<DLLImportAttr>()) 812ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner GV->setLinkage(llvm::Function::DLLImportLinkage); 813b11fa0d25d86169f0e0a29d5398116c0212bb787Daniel Dunbar else if (D->hasAttr<DLLExportAttr>()) 814ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner GV->setLinkage(llvm::Function::DLLExportLinkage); 815b11fa0d25d86169f0e0a29d5398116c0212bb787Daniel Dunbar else if (D->hasAttr<WeakAttr>() || D->hasAttr<WeakImportAttr>()) 816286acbdbe0c82e9a6bcad5fca3c4fa582f3f1a2cMike Stump GV->setLinkage(llvm::GlobalVariable::WeakAnyLinkage); 81704d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar else if (!CompileOpts.NoCommon && 81804d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar (!D->hasExternalStorage() && !D->getInit())) 81904d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar GV->setLinkage(llvm::GlobalVariable::CommonLinkage); 8207e714cd931fa3a90bfd728318a92485aa3e95748Daniel Dunbar else 82104d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar GV->setLinkage(llvm::GlobalVariable::ExternalLinkage); 8227e714cd931fa3a90bfd728318a92485aa3e95748Daniel Dunbar 8237c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar SetCommonAttributes(D, GV); 82404d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar 825686226b538e72c5059ab7c9a8f87eb883193b645Sanjiv Gupta // Emit global variable debug information. 8262d58406872e5af0c924623d9f7c194c4f09936d3Chris Lattner if (CGDebugInfo *DI = getDebugInfo()) { 82766031a5594bc9a7dc0dc5137c3e7955f835e4639Daniel Dunbar DI->setLocation(D->getLocation()); 828686226b538e72c5059ab7c9a8f87eb883193b645Sanjiv Gupta DI->EmitGlobalVariable(GV, D); 829686226b538e72c5059ab7c9a8f87eb883193b645Sanjiv Gupta } 83088a69ad80e1550e9932666e6efa050a5b1223889Chris Lattner} 8315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 832bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 833bd012ff1fa088181646a784f385b28867372d434Daniel Dunbarvoid CodeGenModule::EmitGlobalFunctionDefinition(const FunctionDecl *D) { 8342b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson const llvm::FunctionType *Ty; 8352b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson 8362b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(D)) { 8372b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson bool isVariadic = D->getType()->getAsFunctionProtoType()->isVariadic(); 8382b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson 8392b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson Ty = getTypes().GetFunctionType(getTypes().getFunctionInfo(MD), isVariadic); 8402b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson } else { 8412b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson Ty = cast<llvm::FunctionType>(getTypes().ConvertType(D->getType())); 8422b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson 8432b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson // As a special case, make sure that definitions of K&R function 8442b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson // "type foo()" aren't declared as varargs (which forces the backend 8452b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson // to do unnecessary work). 8462b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson if (D->getType()->isFunctionNoProtoType()) { 8472b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson assert(Ty->isVarArg() && "Didn't lower type as expected"); 8482b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson // Due to stret, the lowered function could have arguments. 8492b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson // Just create the same type as was lowered by ConvertType 8502b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson // but strip off the varargs bit. 8512b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson std::vector<const llvm::Type*> Args(Ty->param_begin(), Ty->param_end()); 8522b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson Ty = llvm::FunctionType::get(Ty->getReturnType(), Args, false); 8532b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson } 854ff75e1db95a53c7606e0bb114cf9adc59ab3d7f6Chris Lattner } 855d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar 85634809507232bc4c3c4840c7d092c7440219fddafChris Lattner // Get or create the prototype for teh function. 8570558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner llvm::Constant *Entry = GetAddrOfFunction(D, Ty); 85834809507232bc4c3c4840c7d092c7440219fddafChris Lattner 8590558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner // Strip off a bitcast if we got one back. 8600558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner if (llvm::ConstantExpr *CE = dyn_cast<llvm::ConstantExpr>(Entry)) { 8610558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner assert(CE->getOpcode() == llvm::Instruction::BitCast); 8620558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner Entry = CE->getOperand(0); 8630558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner } 8640558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner 8650558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner 8660558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner if (cast<llvm::GlobalValue>(Entry)->getType()->getElementType() != Ty) { 86742745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar // If the types mismatch then we have to rewrite the definition. 8680558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner assert(cast<llvm::GlobalValue>(Entry)->isDeclaration() && 8690558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner "Shouldn't replace non-declaration"); 87034809507232bc4c3c4840c7d092c7440219fddafChris Lattner 87162b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // F is the Function* for the one with the wrong type, we must make a new 87262b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // Function* and update everything that used F (a declaration) with the new 87362b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // Function* (which will be a definition). 87462b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // 87562b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // This happens if there is a prototype for a function 87662b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // (e.g. "int f()") and then a definition of a different type 87762b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // (e.g. "int f(int x)"). Start by making a new function of the 87862b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // correct type, RAUW, then steal the name. 87934809507232bc4c3c4840c7d092c7440219fddafChris Lattner GlobalDeclMap.erase(getMangledName(D)); 8800558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner llvm::Function *NewFn = cast<llvm::Function>(GetAddrOfFunction(D, Ty)); 8810558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner NewFn->takeName(cast<llvm::GlobalValue>(Entry)); 88262b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner 88362b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // Replace uses of F with the Function we will endow with a body. 88462b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner llvm::Constant *NewPtrForOldDecl = 8850558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner llvm::ConstantExpr::getBitCast(NewFn, Entry->getType()); 8860558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner Entry->replaceAllUsesWith(NewPtrForOldDecl); 88762b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner 88862b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // Ok, delete the old function now, which is dead. 8890558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner cast<llvm::GlobalValue>(Entry)->eraseFromParent(); 89062b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner 8910558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner Entry = NewFn; 892bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } 8930558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner 8940558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner llvm::Function *Fn = cast<llvm::Function>(Entry); 895bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 896219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar CodeGenFunction(*this).GenerateCode(D, Fn); 8976379a7a15335e0af543a942efe9cfd514a83dab8Daniel Dunbar 8987c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar SetFunctionDefinitionAttributes(D, Fn); 8997c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar SetLLVMFunctionAttributesForDefinition(D, Fn); 900219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 90134809507232bc4c3c4840c7d092c7440219fddafChris Lattner if (const ConstructorAttr *CA = D->getAttr<ConstructorAttr>()) 902219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar AddGlobalCtor(Fn, CA->getPriority()); 90334809507232bc4c3c4840c7d092c7440219fddafChris Lattner if (const DestructorAttr *DA = D->getAttr<DestructorAttr>()) 904219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar AddGlobalDtor(Fn, DA->getPriority()); 905bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar} 906bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 907bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattnervoid CodeGenModule::EmitAliasDefinition(const ValueDecl *D) { 908bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner const AliasAttr *AA = D->getAttr<AliasAttr>(); 909bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner assert(AA && "Not an alias?"); 910bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 911bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner const llvm::Type *DeclTy = getTypes().ConvertTypeForMem(D->getType()); 912bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 913bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // Unique the name through the identifier table. 914bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner const char *AliaseeName = AA->getAliasee().c_str(); 915bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner AliaseeName = getContext().Idents.get(AliaseeName).getName(); 916bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 917bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // Create a reference to the named value. This ensures that it is emitted 918bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // if a deferred decl. 919bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner llvm::Constant *Aliasee; 920bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner if (isa<llvm::FunctionType>(DeclTy)) 921bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner Aliasee = GetOrCreateLLVMFunction(AliaseeName, DeclTy, 0); 922bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner else 923bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner Aliasee = GetOrCreateLLVMGlobal(AliaseeName, 924bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner llvm::PointerType::getUnqual(DeclTy), 0); 925bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 926bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // Create the new alias itself, but don't set a name yet. 927bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner llvm::GlobalValue *GA = 928bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner new llvm::GlobalAlias(Aliasee->getType(), 929bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner llvm::Function::ExternalLinkage, 930bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner "", Aliasee, &getModule()); 931bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 932bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // See if there is already something with the alias' name in the module. 933bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner const char *MangledName = getMangledName(D); 934bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner llvm::GlobalValue *&Entry = GlobalDeclMap[MangledName]; 935bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 936bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner if (Entry && !Entry->isDeclaration()) { 937bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // If there is a definition in the module, then it wins over the alias. 938bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // This is dubious, but allow it to be safe. Just ignore the alias. 939bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner GA->eraseFromParent(); 940bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner return; 941bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner } 942bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 943bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner if (Entry) { 944bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // If there is a declaration in the module, then we had an extern followed 945bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // by the alias, as in: 946bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // extern int test6(); 947bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // ... 948bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // int test6() __attribute__((alias("test7"))); 949bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // 950bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // Remove it and replace uses of it with the alias. 951bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 952bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner Entry->replaceAllUsesWith(llvm::ConstantExpr::getBitCast(GA, 953bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner Entry->getType())); 954bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner Entry->eraseFromParent(); 955bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner } 956bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 957bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // Now we know that there is no conflict, set the name. 958bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner Entry = GA; 959bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner GA->setName(MangledName); 960bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 9617c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // Set attributes which are particular to an alias; this is a 9627c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // specialization of the attributes which may be set on a global 9637c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // variable/function. 9647c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar if (D->hasAttr<DLLExportAttr>()) { 9657c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 9667c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // The dllexport attribute is ignored for undefined symbols. 9677297134f128423fce2e88f92421ed135bded7d4eDouglas Gregor if (FD->getBody(getContext())) 9687c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar GA->setLinkage(llvm::Function::DLLExportLinkage); 9697c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar } else { 9707c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar GA->setLinkage(llvm::Function::DLLExportLinkage); 9717c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar } 9727c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar } else if (D->hasAttr<WeakAttr>() || D->hasAttr<WeakImportAttr>()) { 9737c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar GA->setLinkage(llvm::Function::WeakAnyLinkage); 9747c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar } 9757c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 9767c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar SetCommonAttributes(D, GA); 977bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner} 978bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 979b808c952bbff821dce727dd801a1098d64394f98Chris Lattner/// getBuiltinLibFunction - Given a builtin id for a function like 980b808c952bbff821dce727dd801a1098d64394f98Chris Lattner/// "__builtin_fabsf", return a Function* for "fabsf". 981c136e6cf237711f9f1324637a0b2cdf6ae8e79e4Mike Stumpllvm::Value *CodeGenModule::getBuiltinLibFunction(unsigned BuiltinID) { 9823e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor assert((Context.BuiltinInfo.isLibFunction(BuiltinID) || 9833e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor Context.BuiltinInfo.isPredefinedLibFunction(BuiltinID)) && 9843e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor "isn't a lib fn"); 985bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 9863e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor // Get the name, skip over the __builtin_ prefix (if necessary). 9873e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor const char *Name = Context.BuiltinInfo.GetName(BuiltinID); 9883e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor if (Context.BuiltinInfo.isLibFunction(BuiltinID)) 9893e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor Name += 10; 990bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 991bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner // Get the type for the builtin. 992370ab3f1373841d70582feac9e35c3c6b3489f63Douglas Gregor Builtin::Context::GetBuiltinTypeError Error; 993370ab3f1373841d70582feac9e35c3c6b3489f63Douglas Gregor QualType Type = Context.BuiltinInfo.GetBuiltinType(BuiltinID, Context, Error); 994370ab3f1373841d70582feac9e35c3c6b3489f63Douglas Gregor assert(Error == Builtin::Context::GE_None && "Can't get builtin type"); 995370ab3f1373841d70582feac9e35c3c6b3489f63Douglas Gregor 996bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner const llvm::FunctionType *Ty = 997bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner cast<llvm::FunctionType>(getTypes().ConvertType(Type)); 998bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 999b808c952bbff821dce727dd801a1098d64394f98Chris Lattner // Unique the name through the identifier table. 1000b808c952bbff821dce727dd801a1098d64394f98Chris Lattner Name = getContext().Idents.get(Name).getName(); 1001bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner // FIXME: param attributes for sext/zext etc. 1002b808c952bbff821dce727dd801a1098d64394f98Chris Lattner return GetOrCreateLLVMFunction(Name, Ty, 0); 1003bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner} 1004bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 10057acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattnerllvm::Function *CodeGenModule::getIntrinsic(unsigned IID,const llvm::Type **Tys, 10067acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattner unsigned NumTys) { 10077acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattner return llvm::Intrinsic::getDeclaration(&getModule(), 10087acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattner (llvm::Intrinsic::ID)IID, Tys, NumTys); 10097acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattner} 1010bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 10115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerllvm::Function *CodeGenModule::getMemCpyFn() { 10125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (MemCpyFn) return MemCpyFn; 10134e8a9e8640a6717120394ee2ee5f27989757754dChris Lattner const llvm::Type *IntPtr = TheTargetData.getIntPtrType(); 10144e8a9e8640a6717120394ee2ee5f27989757754dChris Lattner return MemCpyFn = getIntrinsic(llvm::Intrinsic::memcpy, &IntPtr, 1); 10155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1016c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 10170c99509927a0c7a48490486b9fec287b63e5c09cEli Friedmanllvm::Function *CodeGenModule::getMemMoveFn() { 10180c99509927a0c7a48490486b9fec287b63e5c09cEli Friedman if (MemMoveFn) return MemMoveFn; 10194e8a9e8640a6717120394ee2ee5f27989757754dChris Lattner const llvm::Type *IntPtr = TheTargetData.getIntPtrType(); 10204e8a9e8640a6717120394ee2ee5f27989757754dChris Lattner return MemMoveFn = getIntrinsic(llvm::Intrinsic::memmove, &IntPtr, 1); 10210c99509927a0c7a48490486b9fec287b63e5c09cEli Friedman} 10220c99509927a0c7a48490486b9fec287b63e5c09cEli Friedman 102341ef30e869d3f4940437503eb6a2cf70819fdb08Lauro Ramos Venanciollvm::Function *CodeGenModule::getMemSetFn() { 102441ef30e869d3f4940437503eb6a2cf70819fdb08Lauro Ramos Venancio if (MemSetFn) return MemSetFn; 10254e8a9e8640a6717120394ee2ee5f27989757754dChris Lattner const llvm::Type *IntPtr = TheTargetData.getIntPtrType(); 10264e8a9e8640a6717120394ee2ee5f27989757754dChris Lattner return MemSetFn = getIntrinsic(llvm::Intrinsic::memset, &IntPtr, 1); 102741ef30e869d3f4940437503eb6a2cf70819fdb08Lauro Ramos Venancio} 10287acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattner 1029e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlssonstatic void appendFieldAndPadding(CodeGenModule &CGM, 1030e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson std::vector<llvm::Constant*>& Fields, 103144b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor FieldDecl *FieldD, FieldDecl *NextFieldD, 103244b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor llvm::Constant* Field, 10333c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner RecordDecl* RD, const llvm::StructType *STy) { 1034e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson // Append the field. 1035e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson Fields.push_back(Field); 1036e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson 103744b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor int StructFieldNo = CGM.getTypes().getLLVMFieldNo(FieldD); 1038e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson 1039e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson int NextStructFieldNo; 104044b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor if (!NextFieldD) { 1041e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson NextStructFieldNo = STy->getNumElements(); 1042e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson } else { 104344b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor NextStructFieldNo = CGM.getTypes().getLLVMFieldNo(NextFieldD); 1044e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson } 1045e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson 1046e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson // Append padding 1047e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson for (int i = StructFieldNo + 1; i < NextStructFieldNo; i++) { 1048e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson llvm::Constant *C = 1049e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson llvm::Constant::getNullValue(STy->getElementType(StructFieldNo + 1)); 1050e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson 1051e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson Fields.push_back(C); 1052e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson } 1053e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson} 1054e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson 1055bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattnerllvm::Constant *CodeGenModule:: 10568d4141f83d9de379547cf05bd75d4c6cf894b189Steve NaroffGetAddrOfConstantCFString(const StringLiteral *Literal) { 1057b59212a6e494d2c364b54462f545833902c29158Steve Naroff std::string str; 1058271474e32f38cc5bd735c1006e499996cbc6e2d1Chris Lattner unsigned StringLength = 0; 1059b59212a6e494d2c364b54462f545833902c29158Steve Naroff 1060e9b7d8ace8674585818990cff585daae7745bd88Steve Naroff bool isUTF16 = false; 1061e9b7d8ace8674585818990cff585daae7745bd88Steve Naroff if (Literal->containsNonAsciiOrNull()) { 1062e9b7d8ace8674585818990cff585daae7745bd88Steve Naroff // Convert from UTF-8 to UTF-16. 1063e9b7d8ace8674585818990cff585daae7745bd88Steve Naroff llvm::SmallVector<UTF16, 128> ToBuf(Literal->getByteLength()); 1064e9b7d8ace8674585818990cff585daae7745bd88Steve Naroff const UTF8 *FromPtr = (UTF8 *)Literal->getStrData(); 1065e9b7d8ace8674585818990cff585daae7745bd88Steve Naroff UTF16 *ToPtr = &ToBuf[0]; 1066e9b7d8ace8674585818990cff585daae7745bd88Steve Naroff 1067e9b7d8ace8674585818990cff585daae7745bd88Steve Naroff ConversionResult Result; 1068e9b7d8ace8674585818990cff585daae7745bd88Steve Naroff Result = ConvertUTF8toUTF16(&FromPtr, FromPtr+Literal->getByteLength(), 1069e9b7d8ace8674585818990cff585daae7745bd88Steve Naroff &ToPtr, ToPtr+Literal->getByteLength(), 1070e9b7d8ace8674585818990cff585daae7745bd88Steve Naroff strictConversion); 1071aa4a756185e77755aaa10ae50db08ae5be58e70aSteve Naroff if (Result == conversionOK) { 1072aa4a756185e77755aaa10ae50db08ae5be58e70aSteve Naroff // FIXME: Storing UTF-16 in a C string is a hack to test Unicode strings 1073aa4a756185e77755aaa10ae50db08ae5be58e70aSteve Naroff // without doing more surgery to this routine. Since we aren't explicitly 1074aa4a756185e77755aaa10ae50db08ae5be58e70aSteve Naroff // checking for endianness here, it's also a bug (when generating code for 1075aa4a756185e77755aaa10ae50db08ae5be58e70aSteve Naroff // a target that doesn't match the host endianness). Modeling this as an 1076aa4a756185e77755aaa10ae50db08ae5be58e70aSteve Naroff // i16 array is likely the cleanest solution. 1077aa4a756185e77755aaa10ae50db08ae5be58e70aSteve Naroff StringLength = ToPtr-&ToBuf[0]; 1078aa4a756185e77755aaa10ae50db08ae5be58e70aSteve Naroff str.assign((char *)&ToBuf[0], StringLength*2);// Twice as many UTF8 chars. 1079aa4a756185e77755aaa10ae50db08ae5be58e70aSteve Naroff isUTF16 = true; 1080aa4a756185e77755aaa10ae50db08ae5be58e70aSteve Naroff } else if (Result == sourceIllegal) { 1081fd942628abfe30e30427875db953222ae99b4325Steve Naroff // FIXME: Have Sema::CheckObjCString() validate the UTF-8 string. 1082aa4a756185e77755aaa10ae50db08ae5be58e70aSteve Naroff str.assign(Literal->getStrData(), Literal->getByteLength()); 1083aa4a756185e77755aaa10ae50db08ae5be58e70aSteve Naroff StringLength = str.length(); 1084aa4a756185e77755aaa10ae50db08ae5be58e70aSteve Naroff } else 1085aa4a756185e77755aaa10ae50db08ae5be58e70aSteve Naroff assert(Result == conversionOK && "UTF-8 to UTF-16 conversion failed"); 1086b59212a6e494d2c364b54462f545833902c29158Steve Naroff 1087b59212a6e494d2c364b54462f545833902c29158Steve Naroff } else { 1088b59212a6e494d2c364b54462f545833902c29158Steve Naroff str.assign(Literal->getStrData(), Literal->getByteLength()); 1089b59212a6e494d2c364b54462f545833902c29158Steve Naroff StringLength = str.length(); 1090e9b7d8ace8674585818990cff585daae7745bd88Steve Naroff } 1091c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson llvm::StringMapEntry<llvm::Constant *> &Entry = 1092c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson CFConstantStringMap.GetOrCreateValue(&str[0], &str[str.length()]); 1093c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 10948e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar if (llvm::Constant *C = Entry.getValue()) 10958e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar return C; 1096c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 10973e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar llvm::Constant *Zero = llvm::Constant::getNullValue(llvm::Type::Int32Ty); 10983e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar llvm::Constant *Zeros[] = { Zero, Zero }; 1099c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 1100c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson if (!CFConstantStringClassRef) { 1101c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson const llvm::Type *Ty = getTypes().ConvertType(getContext().IntTy); 1102c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson Ty = llvm::ArrayType::get(Ty, 0); 11033e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar 11043e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar // FIXME: This is fairly broken if 11053e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar // __CFConstantStringClassReference is already defined, in that it 11063e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar // will get renamed and the user will most likely see an opaque 11073e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar // error message. This is a general issue with relying on 11083e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar // particular names. 11093e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar llvm::GlobalVariable *GV = 1110c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson new llvm::GlobalVariable(Ty, false, 1111c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson llvm::GlobalVariable::ExternalLinkage, 0, 1112c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson "__CFConstantStringClassReference", 1113c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson &getModule()); 11143e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar 11153e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar // Decay array -> ptr 11163e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar CFConstantStringClassRef = 11173e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar llvm::ConstantExpr::getGetElementPtr(GV, Zeros, 2); 1118c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson } 1119c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 1120e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson QualType CFTy = getContext().getCFConstantStringType(); 1121e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson RecordDecl *CFRD = CFTy->getAsRecordType()->getDecl(); 11223e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar 1123e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson const llvm::StructType *STy = 1124e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson cast<llvm::StructType>(getTypes().ConvertType(CFTy)); 1125e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson 1126e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson std::vector<llvm::Constant*> Fields; 11276ab3524f72a6e64aa04973fa9433b5559abb3525Douglas Gregor RecordDecl::field_iterator Field = CFRD->field_begin(getContext()); 112844b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 1129c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // Class pointer. 113044b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor FieldDecl *CurField = *Field++; 113144b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor FieldDecl *NextField = *Field++; 113244b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor appendFieldAndPadding(*this, Fields, CurField, NextField, 113344b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor CFConstantStringClassRef, CFRD, STy); 1134c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 1135c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // Flags. 113644b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor CurField = NextField; 113744b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor NextField = *Field++; 11383e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar const llvm::Type *Ty = getTypes().ConvertType(getContext().UnsignedIntTy); 113944b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor appendFieldAndPadding(*this, Fields, CurField, NextField, 1140e9b7d8ace8674585818990cff585daae7745bd88Steve Naroff isUTF16 ? llvm::ConstantInt::get(Ty, 0x07d0) 1141e9b7d8ace8674585818990cff585daae7745bd88Steve Naroff : llvm::ConstantInt::get(Ty, 0x07C8), 1142e9b7d8ace8674585818990cff585daae7745bd88Steve Naroff CFRD, STy); 1143c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 1144c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // String pointer. 114544b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor CurField = NextField; 114644b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor NextField = *Field++; 11473e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar llvm::Constant *C = llvm::ConstantArray::get(str); 1148a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar 1149a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar const char *Sect, *Prefix; 1150a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar bool isConstant; 1151a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar if (isUTF16) { 1152a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar Prefix = getContext().Target.getUnicodeStringSymbolPrefix(); 1153a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar Sect = getContext().Target.getUnicodeStringSection(); 1154a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar // FIXME: Why does GCC not set constant here? 1155a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar isConstant = false; 1156a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar } else { 1157a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar Prefix = getContext().Target.getStringSymbolPrefix(true); 1158a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar Sect = getContext().Target.getCFStringDataSection(); 1159a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar // FIXME: -fwritable-strings should probably affect this, but we 1160a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar // are following gcc here. 1161a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar isConstant = true; 1162a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar } 11638e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar llvm::GlobalVariable *GV = 1164a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar new llvm::GlobalVariable(C->getType(), isConstant, 11658e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar llvm::GlobalValue::InternalLinkage, 1166a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar C, Prefix, &getModule()); 1167a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar if (Sect) 11688e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar GV->setSection(Sect); 1169a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar if (isUTF16) { 1170a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar unsigned Align = getContext().getTypeAlign(getContext().ShortTy)/8; 1171a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar GV->setAlignment(Align); 1172a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar } 117344b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor appendFieldAndPadding(*this, Fields, CurField, NextField, 11748e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar llvm::ConstantExpr::getGetElementPtr(GV, Zeros, 2), 1175e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson CFRD, STy); 1176c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 1177c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // String length. 117844b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor CurField = NextField; 117944b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor NextField = 0; 1180c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson Ty = getTypes().ConvertType(getContext().LongTy); 118144b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor appendFieldAndPadding(*this, Fields, CurField, NextField, 1182b59212a6e494d2c364b54462f545833902c29158Steve Naroff llvm::ConstantInt::get(Ty, StringLength), CFRD, STy); 1183c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 1184c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // The struct. 1185e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson C = llvm::ConstantStruct::get(STy, Fields); 11868e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar GV = new llvm::GlobalVariable(C->getType(), true, 11878e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar llvm::GlobalVariable::InternalLinkage, C, 11888e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar getContext().Target.getCFStringSymbolPrefix(), 11898e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar &getModule()); 11908e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar if (const char *Sect = getContext().Target.getCFStringSection()) 11918e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar GV->setSection(Sect); 11920c67829763b98bc670062b553897a851fab17401Anders Carlsson Entry.setValue(GV); 11933e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar 11940c67829763b98bc670062b553897a851fab17401Anders Carlsson return GV; 1195c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson} 119645e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 11976143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// GetStringForStringLiteral - Return the appropriate bytes for a 11981e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar/// string literal, properly padded to match the literal type. 11996143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbarstd::string CodeGenModule::GetStringForStringLiteral(const StringLiteral *E) { 12001e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar const char *StrData = E->getStrData(); 12011e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar unsigned Len = E->getByteLength(); 12021e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar 12031e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar const ConstantArrayType *CAT = 12041e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar getContext().getAsConstantArrayType(E->getType()); 12051e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar assert(CAT && "String isn't pointer or array!"); 12061e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar 1207dbb1ecc32ca122b07b7c98fd0a8f6f53985adaccChris Lattner // Resize the string to the right size. 12081e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar std::string Str(StrData, StrData+Len); 12091e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar uint64_t RealLen = CAT->getSize().getZExtValue(); 1210dbb1ecc32ca122b07b7c98fd0a8f6f53985adaccChris Lattner 1211dbb1ecc32ca122b07b7c98fd0a8f6f53985adaccChris Lattner if (E->isWide()) 1212dbb1ecc32ca122b07b7c98fd0a8f6f53985adaccChris Lattner RealLen *= getContext().Target.getWCharWidth()/8; 1213dbb1ecc32ca122b07b7c98fd0a8f6f53985adaccChris Lattner 12141e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar Str.resize(RealLen, '\0'); 12151e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar 12161e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar return Str; 12171e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar} 12181e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar 12196143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// GetAddrOfConstantStringFromLiteral - Return a pointer to a 12206143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// constant array for the given string literal. 12216143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbarllvm::Constant * 12226143293fa4366ee95d7e47e61bd030a34bf68b55Daniel DunbarCodeGenModule::GetAddrOfConstantStringFromLiteral(const StringLiteral *S) { 12236143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar // FIXME: This can be more efficient. 12246143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar return GetAddrOfConstantString(GetStringForStringLiteral(S)); 12256143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar} 12266143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar 1227eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner/// GetAddrOfConstantStringFromObjCEncode - Return a pointer to a constant 1228eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner/// array for the given ObjCEncodeExpr node. 1229eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattnerllvm::Constant * 1230eaf2bb89eb2aad3b80673de30febe52df43c10ecChris LattnerCodeGenModule::GetAddrOfConstantStringFromObjCEncode(const ObjCEncodeExpr *E) { 1231eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner std::string Str; 1232eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner getContext().getObjCEncodingForType(E->getEncodedType(), Str); 1233a210f350fa78c263caa26e0f999cce85bb235309Eli Friedman 1234a210f350fa78c263caa26e0f999cce85bb235309Eli Friedman return GetAddrOfConstantCString(Str); 1235eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner} 1236eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner 1237eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner 1238a7ad98ff0919d6a24ea7c46634ea29bea551c1a0Chris Lattner/// GenerateWritableString -- Creates storage for a string literal. 123945e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattnerstatic llvm::Constant *GenerateStringLiteral(const std::string &str, 124045e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner bool constant, 12415fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar CodeGenModule &CGM, 12425fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar const char *GlobalName) { 12436143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar // Create Constant for this string literal. Don't add a '\0'. 12446143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar llvm::Constant *C = llvm::ConstantArray::get(str, false); 124545e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 124645e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner // Create a global variable for this string 1247eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner return new llvm::GlobalVariable(C->getType(), constant, 1248eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner llvm::GlobalValue::InternalLinkage, 12498e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar C, GlobalName, &CGM.getModule()); 125045e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner} 125145e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 12526143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// GetAddrOfConstantString - Returns a pointer to a character array 12536143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// containing the literal. This contents are exactly that of the 12546143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// given string, i.e. it will not be null terminated automatically; 12556143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// see GetAddrOfConstantCString. Note that whether the result is 12566143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// actually a pointer to an LLVM constant depends on 12576143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// Feature.WriteableStrings. 12586143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// 12596143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// The result has pointer to array type. 12605fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbarllvm::Constant *CodeGenModule::GetAddrOfConstantString(const std::string &str, 12615fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar const char *GlobalName) { 12628e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar bool IsConstant = !Features.WritableStrings; 12638e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar 12648e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar // Get the default prefix if a name wasn't specified. 12658e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar if (!GlobalName) 12668e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar GlobalName = getContext().Target.getStringSymbolPrefix(IsConstant); 12678e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar 12688e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar // Don't share any string literals if strings aren't constant. 12698e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar if (!IsConstant) 12705fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar return GenerateStringLiteral(str, false, *this, GlobalName); 127145e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 127245e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner llvm::StringMapEntry<llvm::Constant *> &Entry = 127345e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner ConstantStringMap.GetOrCreateValue(&str[0], &str[str.length()]); 127445e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 127545e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner if (Entry.getValue()) 1276eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner return Entry.getValue(); 127745e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 127845e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner // Create a global variable for this. 12795fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar llvm::Constant *C = GenerateStringLiteral(str, true, *this, GlobalName); 128045e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner Entry.setValue(C); 128145e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner return C; 128245e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner} 12836143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar 12846143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// GetAddrOfConstantCString - Returns a pointer to a character 12856143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// array containing the literal and a terminating '\-' 12866143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// character. The result has pointer to array type. 12875fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbarllvm::Constant *CodeGenModule::GetAddrOfConstantCString(const std::string &str, 12885fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar const char *GlobalName){ 1289c9f29c61856ffb5f643cedbe87ac076f21a1381aChris Lattner return GetAddrOfConstantString(str + '\0', GlobalName); 12906143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar} 129141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 1292af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar/// EmitObjCPropertyImplementations - Emit information for synthesized 1293af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar/// properties for an implementation. 1294af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbarvoid CodeGenModule::EmitObjCPropertyImplementations(const 1295af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCImplementationDecl *D) { 1296af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar for (ObjCImplementationDecl::propimpl_iterator i = D->propimpl_begin(), 1297af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar e = D->propimpl_end(); i != e; ++i) { 1298af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCPropertyImplDecl *PID = *i; 1299af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 1300af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // Dynamic is just for type-checking. 1301af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize) { 1302af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCPropertyDecl *PD = PID->getPropertyDecl(); 1303af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 1304af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // Determine which methods need to be implemented, some may have 1305af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // been overridden. Note that ::isSynthesized is not the method 1306af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // we want, that just indicates if the decl came from a 1307af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // property. What we want to know is if the method is defined in 1308af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // this implementation. 1309af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar if (!D->getInstanceMethod(PD->getGetterName())) 1310fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian CodeGenFunction(*this).GenerateObjCGetter( 1311fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian const_cast<ObjCImplementationDecl *>(D), PID); 1312af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar if (!PD->isReadOnly() && 1313af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar !D->getInstanceMethod(PD->getSetterName())) 1314fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian CodeGenFunction(*this).GenerateObjCSetter( 1315fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian const_cast<ObjCImplementationDecl *>(D), PID); 1316af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar } 1317af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar } 1318af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar} 1319af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 132091e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson/// EmitNamespace - Emit all declarations in a namespace. 1321984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlssonvoid CodeGenModule::EmitNamespace(const NamespaceDecl *ND) { 13226ab3524f72a6e64aa04973fa9433b5559abb3525Douglas Gregor for (RecordDecl::decl_iterator I = ND->decls_begin(getContext()), 13236ab3524f72a6e64aa04973fa9433b5559abb3525Douglas Gregor E = ND->decls_end(getContext()); 1324984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlsson I != E; ++I) 1325984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlsson EmitTopLevelDecl(*I); 1326984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlsson} 1327984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlsson 132891e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson// EmitLinkageSpec - Emit all declarations in a linkage spec. 132991e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlssonvoid CodeGenModule::EmitLinkageSpec(const LinkageSpecDecl *LSD) { 133091e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson if (LSD->getLanguage() != LinkageSpecDecl::lang_c) { 133191e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson ErrorUnsupported(LSD, "linkage spec"); 133291e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson return; 133391e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson } 133491e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson 13356ab3524f72a6e64aa04973fa9433b5559abb3525Douglas Gregor for (RecordDecl::decl_iterator I = LSD->decls_begin(getContext()), 13366ab3524f72a6e64aa04973fa9433b5559abb3525Douglas Gregor E = LSD->decls_end(getContext()); 133791e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson I != E; ++I) 133891e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson EmitTopLevelDecl(*I); 133991e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson} 134091e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson 134141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar/// EmitTopLevelDecl - Emit code for a single top level declaration. 134241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbarvoid CodeGenModule::EmitTopLevelDecl(Decl *D) { 134341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // If an error has occurred, stop code generation, but continue 134441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // parsing and semantic analysis (to ensure all warnings and errors 134541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // are emitted). 134641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar if (Diags.hasErrorOccurred()) 134741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar return; 134841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 134941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar switch (D->getKind()) { 13502b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson case Decl::CXXMethod: 135141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::Function: 135241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::Var: 135341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar EmitGlobal(cast<ValueDecl>(D)); 135441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 135541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 135695d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson // C++ Decls 135741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::Namespace: 1358984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlsson EmitNamespace(cast<NamespaceDecl>(D)); 135941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 136095d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson case Decl::CXXConstructor: 136195d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson EmitCXXConstructors(cast<CXXConstructorDecl>(D)); 136295d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson break; 136327ae53665f8b00fe4ba21da0fa79a4ce6e0b6cd5Anders Carlsson case Decl::CXXDestructor: 136427ae53665f8b00fe4ba21da0fa79a4ce6e0b6cd5Anders Carlsson EmitCXXDestructors(cast<CXXDestructorDecl>(D)); 136527ae53665f8b00fe4ba21da0fa79a4ce6e0b6cd5Anders Carlsson break; 136695d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson 136795d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson // Objective-C Decls 136841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 136938e24c782c17b6058bf61d635747bbde19fb1bc7Fariborz Jahanian // Forward declarations, no (immediate) code generation. 137041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCClass: 137141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCForwardProtocol: 1372b31cb7f1752ea011fd06ac9574ce24667d11cbdbFariborz Jahanian case Decl::ObjCCategory: 1373285d0dba947b7c9960eaa88e8c4fced0398d4319Chris Lattner break; 1374b31cb7f1752ea011fd06ac9574ce24667d11cbdbFariborz Jahanian case Decl::ObjCInterface: 1375285d0dba947b7c9960eaa88e8c4fced0398d4319Chris Lattner // If we already laid out this interface due to an @class, and if we 1376285d0dba947b7c9960eaa88e8c4fced0398d4319Chris Lattner // codegen'd a reference it, update the 'opaque' type to be a real type now. 1377285d0dba947b7c9960eaa88e8c4fced0398d4319Chris Lattner Types.UpdateCompletedType(cast<ObjCInterfaceDecl>(D)); 137841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 1379285d0dba947b7c9960eaa88e8c4fced0398d4319Chris Lattner 138041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCProtocol: 1381b31cb7f1752ea011fd06ac9574ce24667d11cbdbFariborz Jahanian Runtime->GenerateProtocol(cast<ObjCProtocolDecl>(D)); 138241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 138341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 138441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCCategoryImpl: 1385af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // Categories have properties but don't support synthesize so we 1386af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // can ignore them here. 138741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar Runtime->GenerateCategory(cast<ObjCCategoryImplDecl>(D)); 138841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 138941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 1390af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar case Decl::ObjCImplementation: { 1391af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCImplementationDecl *OMD = cast<ObjCImplementationDecl>(D); 1392af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar EmitObjCPropertyImplementations(OMD); 1393af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar Runtime->GenerateClass(OMD); 139441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 1395af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar } 139641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCMethod: { 139741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar ObjCMethodDecl *OMD = cast<ObjCMethodDecl>(D); 139841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // If this is not a prototype, emit the body. 13997297134f128423fce2e88f92421ed135bded7d4eDouglas Gregor if (OMD->getBody(getContext())) 140041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar CodeGenFunction(*this).GenerateObjCMethod(OMD); 140141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 140241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar } 140341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCCompatibleAlias: 1404305c658ebce84bb9833fc0e7675554656453b8e8Fariborz Jahanian // compatibility-alias is a directive and has no code gen. 140541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 140641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 140791e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson case Decl::LinkageSpec: 140891e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson EmitLinkageSpec(cast<LinkageSpecDecl>(D)); 140941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 141041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 141141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::FileScopeAsm: { 141241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar FileScopeAsmDecl *AD = cast<FileScopeAsmDecl>(D); 141341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar std::string AsmString(AD->getAsmString()->getStrData(), 141441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar AD->getAsmString()->getByteLength()); 141541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 141641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar const std::string &S = getModule().getModuleInlineAsm(); 141741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar if (S.empty()) 141841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar getModule().setModuleInlineAsm(AsmString); 141941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar else 142041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar getModule().setModuleInlineAsm(S + '\n' + AsmString); 142141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 142241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar } 142341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 142441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar default: 142541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // Make sure we handled everything we should, every other kind is 142641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // a non-top-level decl. FIXME: Would be nice to have an 142741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // isTopLevelDeclKind function. Need to recode Decl::Kind to do 142841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // that easily. 142941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar assert(isa<TypeDecl>(D) && "Unsupported decl kind"); 143041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar } 143141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar} 1432