CodeGenModule.cpp revision 7ced9c8529b734e313f62a3b81189d6f402f6713
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" 241b63e4f732dbc73d90abf886b4d21f8e3a165f6dChris Lattner#include "clang/Basic/Builtins.h" 252c8569d5f43f7de1fb993e84c95ea571dd9ac55eChris Lattner#include "clang/Basic/Diagnostic.h" 268bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman#include "clang/Basic/SourceManager.h" 275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Basic/TargetInfo.h" 28e9b7d8ace8674585818990cff585daae7745bd88Steve Naroff#include "clang/Basic/ConvertUTF.h" 29ec9426ca6039279bcc99bc2c625bb2abe4f0353dNate Begeman#include "llvm/CallingConv.h" 30bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner#include "llvm/Module.h" 315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "llvm/Intrinsics.h" 3220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov#include "llvm/Target/TargetData.h" 335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerusing namespace clang; 345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerusing namespace CodeGen; 355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 37bd3606426d389370616126af969904ec493cb105Chris LattnerCodeGenModule::CodeGenModule(ASTContext &C, const CompileOptions &compileOpts, 38fb97b03e42d397405f617be0252be83e77a66f6eChris Lattner llvm::Module &M, const llvm::TargetData &TD, 39bd3606426d389370616126af969904ec493cb105Chris Lattner Diagnostic &diags) 40bd3606426d389370616126af969904ec493cb105Chris Lattner : BlockModule(C, M, TD, Types, *this), Context(C), 41bd3606426d389370616126af969904ec493cb105Chris Lattner Features(C.getLangOptions()), CompileOpts(compileOpts), TheModule(M), 42dbd920c7758e6dfb678a8f503fb14ba97c26f23aAnders Carlsson TheTargetData(TD), Diags(diags), Types(C, M, TD), MangleCtx(C), 43dbd920c7758e6dfb678a8f503fb14ba97c26f23aAnders Carlsson VtableInfo(*this), Runtime(0), 44a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson MemCpyFn(0), MemMoveFn(0), MemSetFn(0), CFConstantStringClassRef(0), 45a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson VMContext(M.getContext()) { 46208ff5e8a073de2a5d15cbe03cab8a4c0d935e28Daniel Dunbar 473c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner if (!Features.ObjC1) 483c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner Runtime = 0; 493c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner else if (!Features.NeXTRuntime) 503c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner Runtime = CreateGNUObjCRuntime(*this); 513c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner else if (Features.ObjCNonFragileABI) 523c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner Runtime = CreateMacNonFragileABIObjCRuntime(*this); 533c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner else 543c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner Runtime = CreateMacObjCRuntime(*this); 55e8b9f5b8ea60983c4a74cb8b63879616b914b65aSanjiv Gupta 56e8b9f5b8ea60983c4a74cb8b63879616b914b65aSanjiv Gupta // If debug info generation is enabled, create the CGDebugInfo object. 576dba432c7b862c2219e5d6e52b0cd188fbf84b01Devang Patel DebugInfo = CompileOpts.DebugInfo ? new CGDebugInfo(this) : 0; 582b94fe35edf951a14ecd32b21f7ebcc2e3754c67Chris Lattner} 592b94fe35edf951a14ecd32b21f7ebcc2e3754c67Chris Lattner 602b94fe35edf951a14ecd32b21f7ebcc2e3754c67Chris LattnerCodeGenModule::~CodeGenModule() { 61815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenek delete Runtime; 62815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenek delete DebugInfo; 63815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenek} 64815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenek 65815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenekvoid CodeGenModule::Release() { 6689ed31d3f9eeb8ec77c284a5cf404a74bf5e7acfAnders Carlsson // We need to call this first because it can add deferred declarations. 6789ed31d3f9eeb8ec77c284a5cf404a74bf5e7acfAnders Carlsson EmitCXXGlobalInitFunc(); 6889ed31d3f9eeb8ec77c284a5cf404a74bf5e7acfAnders Carlsson 6982227ff4eb665bbf41720ebdc0dc9215a86ba838Chris Lattner EmitDeferred(); 70208ff5e8a073de2a5d15cbe03cab8a4c0d935e28Daniel Dunbar if (Runtime) 71208ff5e8a073de2a5d15cbe03cab8a4c0d935e28Daniel Dunbar if (llvm::Function *ObjCInitFunction = Runtime->ModuleInitFunction()) 72208ff5e8a073de2a5d15cbe03cab8a4c0d935e28Daniel Dunbar AddGlobalCtor(ObjCInitFunction); 736bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar EmitCtorList(GlobalCtors, "llvm.global_ctors"); 746bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar EmitCtorList(GlobalDtors, "llvm.global_dtors"); 75532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman EmitAnnotations(); 760269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar EmitLLVMUsed(); 77f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar} 78f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar 79488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar/// ErrorUnsupported - Print out an error that codegen doesn't support the 802c8569d5f43f7de1fb993e84c95ea571dd9ac55eChris Lattner/// specified stmt yet. 8190df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbarvoid CodeGenModule::ErrorUnsupported(const Stmt *S, const char *Type, 8290df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar bool OmitOnError) { 8390df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar if (OmitOnError && getDiags().hasErrorOccurred()) 8490df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar return; 851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump unsigned DiagID = getDiags().getCustomDiagID(Diagnostic::Error, 8656b8001b42bd603ef593e3cb278d8b9b9ba26ca9Daniel Dunbar "cannot compile this %0 yet"); 872c8569d5f43f7de1fb993e84c95ea571dd9ac55eChris Lattner std::string Msg = Type; 880a14eee528a901c16f0e288fbc10a3abc1660d87Chris Lattner getDiags().Report(Context.getFullLoc(S->getLocStart()), DiagID) 890a14eee528a901c16f0e288fbc10a3abc1660d87Chris Lattner << Msg << S->getSourceRange(); 902c8569d5f43f7de1fb993e84c95ea571dd9ac55eChris Lattner} 9158c3f9ec11cbe852a518bf2f83af46f938b7b852Chris Lattner 92488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar/// ErrorUnsupported - Print out an error that codegen doesn't support the 93c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner/// specified decl yet. 9490df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbarvoid CodeGenModule::ErrorUnsupported(const Decl *D, const char *Type, 9590df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar bool OmitOnError) { 9690df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar if (OmitOnError && getDiags().hasErrorOccurred()) 9790df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar return; 981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump unsigned DiagID = getDiags().getCustomDiagID(Diagnostic::Error, 9956b8001b42bd603ef593e3cb278d8b9b9ba26ca9Daniel Dunbar "cannot compile this %0 yet"); 100c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner std::string Msg = Type; 1010a14eee528a901c16f0e288fbc10a3abc1660d87Chris Lattner getDiags().Report(Context.getFullLoc(D->getLocation()), DiagID) << Msg; 102c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner} 103c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner 1041eb4433ac451dc16f4133a88af2d002ac26c58efMike StumpLangOptions::VisibilityMode 10504d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel DunbarCodeGenModule::getDeclVisibilityMode(const Decl *D) const { 10604d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar if (const VarDecl *VD = dyn_cast<VarDecl>(D)) 10704d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar if (VD->getStorageClass() == VarDecl::PrivateExtern) 10804d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar return LangOptions::Hidden; 10904d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar 11040b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (const VisibilityAttr *attr = D->getAttr<VisibilityAttr>()) { 11104d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar switch (attr->getVisibility()) { 11204d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar default: assert(0 && "Unknown visibility!"); 1131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump case VisibilityAttr::DefaultVisibility: 11404d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar return LangOptions::Default; 11504d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar case VisibilityAttr::HiddenVisibility: 11604d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar return LangOptions::Hidden; 11704d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar case VisibilityAttr::ProtectedVisibility: 11804d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar return LangOptions::Protected; 11904d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar } 1207e714cd931fa3a90bfd728318a92485aa3e95748Daniel Dunbar } 1216ab187a49a42de6d351248d8a6e0206e39743a0cDaniel Dunbar 12204d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar return getLangOptions().getVisibilityMode(); 1234f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman} 1244f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman 1251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpvoid CodeGenModule::setGlobalVisibility(llvm::GlobalValue *GV, 12604d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar const Decl *D) const { 12704d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar // Internal definitions always have default visibility. 128df102fcb978588d5edbc661fb5da0b6922f9ab1cChris Lattner if (GV->hasLocalLinkage()) { 1297e714cd931fa3a90bfd728318a92485aa3e95748Daniel Dunbar GV->setVisibility(llvm::GlobalValue::DefaultVisibility); 1306ab187a49a42de6d351248d8a6e0206e39743a0cDaniel Dunbar return; 1317e714cd931fa3a90bfd728318a92485aa3e95748Daniel Dunbar } 1326ab187a49a42de6d351248d8a6e0206e39743a0cDaniel Dunbar 13304d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar switch (getDeclVisibilityMode(D)) { 1347cd2e93125e2f3b6ca01b24ed0c3fd7e94683fd9Fariborz Jahanian default: assert(0 && "Unknown visibility!"); 13504d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar case LangOptions::Default: 13604d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar return GV->setVisibility(llvm::GlobalValue::DefaultVisibility); 13704d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar case LangOptions::Hidden: 13804d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar return GV->setVisibility(llvm::GlobalValue::HiddenVisibility); 13904d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar case LangOptions::Protected: 14004d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar return GV->setVisibility(llvm::GlobalValue::ProtectedVisibility); 1417cd2e93125e2f3b6ca01b24ed0c3fd7e94683fd9Fariborz Jahanian } 1427cd2e93125e2f3b6ca01b24ed0c3fd7e94683fd9Fariborz Jahanian} 1437cd2e93125e2f3b6ca01b24ed0c3fd7e94683fd9Fariborz Jahanian 1442a131fbca2a51085dc083b8c56a2d4ced3cf1413Anders Carlssonconst char *CodeGenModule::getMangledName(const GlobalDecl &GD) { 1454a6835e650ff24e19ce08a3bd347c0ad186777fdAnders Carlsson const NamedDecl *ND = cast<NamedDecl>(GD.getDecl()); 1461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1472a131fbca2a51085dc083b8c56a2d4ced3cf1413Anders Carlsson if (const CXXConstructorDecl *D = dyn_cast<CXXConstructorDecl>(ND)) 1482a131fbca2a51085dc083b8c56a2d4ced3cf1413Anders Carlsson return getMangledCXXCtorName(D, GD.getCtorType()); 1492a131fbca2a51085dc083b8c56a2d4ced3cf1413Anders Carlsson if (const CXXDestructorDecl *D = dyn_cast<CXXDestructorDecl>(ND)) 1502a131fbca2a51085dc083b8c56a2d4ced3cf1413Anders Carlsson return getMangledCXXDtorName(D, GD.getDtorType()); 1511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1522a131fbca2a51085dc083b8c56a2d4ced3cf1413Anders Carlsson return getMangledName(ND); 1532a131fbca2a51085dc083b8c56a2d4ced3cf1413Anders Carlsson} 1542a131fbca2a51085dc083b8c56a2d4ced3cf1413Anders Carlsson 1555f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// \brief Retrieves the mangled name for the given declaration. 1565f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// 1575f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// If the given declaration requires a mangled name, returns an 158c50689bd1e8788a7fc8f19070b7505ff95034979Chris Lattner/// const char* containing the mangled name. Otherwise, returns 159c50689bd1e8788a7fc8f19070b7505ff95034979Chris Lattner/// the unmangled name. 1605f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// 1616ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregorconst char *CodeGenModule::getMangledName(const NamedDecl *ND) { 162c50689bd1e8788a7fc8f19070b7505ff95034979Chris Lattner // In C, functions with no attributes never need to be mangled. Fastpath them. 163c50689bd1e8788a7fc8f19070b7505ff95034979Chris Lattner if (!getLangOptions().CPlusPlus && !ND->hasAttrs()) { 164c50689bd1e8788a7fc8f19070b7505ff95034979Chris Lattner assert(ND->getIdentifier() && "Attempt to mangle unnamed decl."); 1653c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner return ND->getNameAsCString(); 166c50689bd1e8788a7fc8f19070b7505ff95034979Chris Lattner } 1671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1686ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregor llvm::SmallString<256> Name; 1696ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregor llvm::raw_svector_ostream Out(Name); 170b540491851910c2efa68196a8bdc2eed1071c17dAnders Carlsson if (!mangleName(getMangleContext(), ND, Out)) { 171fe345572459b69a6b680322fef504b4f8bd98dd7Daniel Dunbar assert(ND->getIdentifier() && "Attempt to mangle unnamed decl."); 1723c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner return ND->getNameAsCString(); 173fe345572459b69a6b680322fef504b4f8bd98dd7Daniel Dunbar } 1745f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor 1756ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregor Name += '\0'; 17695d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson return UniqueMangledName(Name.begin(), Name.end()); 17795d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson} 17895d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson 17995d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlssonconst char *CodeGenModule::UniqueMangledName(const char *NameStart, 18095d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson const char *NameEnd) { 18195d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson assert(*(NameEnd - 1) == '\0' && "Mangled name must be null terminated!"); 1821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18395d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson return MangledNames.GetOrCreateValue(NameStart, NameEnd).getKeyData(); 1845f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor} 1855f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor 1866d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner/// AddGlobalCtor - Add a function to the list that will be called before 1876d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner/// main() runs. 1886bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbarvoid CodeGenModule::AddGlobalCtor(llvm::Function * Ctor, int Priority) { 18949988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // FIXME: Type coercion of void()* types. 1906bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar GlobalCtors.push_back(std::make_pair(Ctor, Priority)); 1916d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner} 1926d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner 1936bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar/// AddGlobalDtor - Add a function to the list that will be called 1946bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar/// when the module is unloaded. 1956bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbarvoid CodeGenModule::AddGlobalDtor(llvm::Function * Dtor, int Priority) { 19649988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // FIXME: Type coercion of void()* types. 1976bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar GlobalDtors.push_back(std::make_pair(Dtor, Priority)); 1986bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar} 1996bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar 2006bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbarvoid CodeGenModule::EmitCtorList(const CtorList &Fns, const char *GlobalName) { 2016bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar // Ctor function type is void()*. 2026bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar llvm::FunctionType* CtorFTy = 2031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), 2046bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar std::vector<const llvm::Type*>(), 2056bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar false); 20696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::Type *CtorPFTy = llvm::PointerType::getUnqual(CtorFTy); 2076bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar 2086bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar // Get the type of a ctor entry, { i32, void ()* }. 2091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::StructType* CtorStructTy = 2101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::StructType::get(VMContext, llvm::Type::getInt32Ty(VMContext), 21196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(CtorFTy), NULL); 2126bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar 2136bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar // Construct the constructor and destructor arrays. 2146bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar std::vector<llvm::Constant*> Ctors; 2156bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar for (CtorList::const_iterator I = Fns.begin(), E = Fns.end(); I != E; ++I) { 2166bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar std::vector<llvm::Constant*> S; 2171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump S.push_back(llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), 2180032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson I->second, false)); 2193c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson S.push_back(llvm::ConstantExpr::getBitCast(I->first, CtorPFTy)); 22008e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Ctors.push_back(llvm::ConstantStruct::get(CtorStructTy, S)); 2216bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar } 2226bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar 2236bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar if (!Ctors.empty()) { 22496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *AT = llvm::ArrayType::get(CtorStructTy, Ctors.size()); 2251c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, AT, false, 226572cf09ae8a78af1c56d40b016ec4cf1837163acChris Lattner llvm::GlobalValue::AppendingLinkage, 2277db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::ConstantArray::get(AT, Ctors), 2281c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson GlobalName); 2296d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner } 2306d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner} 2316d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner 232532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begemanvoid CodeGenModule::EmitAnnotations() { 233532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman if (Annotations.empty()) 234532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman return; 235532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman 236532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman // Create a new global variable for the ConstantStruct in the Module. 237532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman llvm::Constant *Array = 23896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ConstantArray::get(llvm::ArrayType::get(Annotations[0]->getType(), 239532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman Annotations.size()), 240532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman Annotations); 2411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalValue *gv = 2421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump new llvm::GlobalVariable(TheModule, Array->getType(), false, 2431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalValue::AppendingLinkage, Array, 2441c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson "llvm.global.annotations"); 245532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman gv->setSection("llvm.metadata"); 246532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman} 247532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman 24886daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattnerstatic CodeGenModule::GVALinkage 2491eb4433ac451dc16f4133a88af2d002ac26c58efMike StumpGetLinkageForFunction(ASTContext &Context, const FunctionDecl *FD, 25068584ed35ad819a1668e3f527ba7f5dd4ae6a333Douglas Gregor const LangOptions &Features) { 2519aeed32282fe8a775c24c01c923717ca86695685John McCall // Everything located semantically within an anonymous namespace is 2529aeed32282fe8a775c24c01c923717ca86695685John McCall // always internal. 2539aeed32282fe8a775c24c01c923717ca86695685John McCall if (FD->isInAnonymousNamespace()) 2549aeed32282fe8a775c24c01c923717ca86695685John McCall return CodeGenModule::GVA_Internal; 2559aeed32282fe8a775c24c01c923717ca86695685John McCall 2561fd2dd145d9bcdf0b8d60a88e1795b6ae83656f5Douglas Gregor // The kind of external linkage this function will have, if it is not 2571fd2dd145d9bcdf0b8d60a88e1795b6ae83656f5Douglas Gregor // inline or static. 2581fd2dd145d9bcdf0b8d60a88e1795b6ae83656f5Douglas Gregor CodeGenModule::GVALinkage External = CodeGenModule::GVA_StrongExternal; 2591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (Context.getLangOptions().CPlusPlus && 260d0e3daf2b980b505e535d35b432c938c6d0208efDouglas Gregor FD->getTemplateSpecializationKind() == TSK_ImplicitInstantiation) 2611fd2dd145d9bcdf0b8d60a88e1795b6ae83656f5Douglas Gregor External = CodeGenModule::GVA_TemplateInstantiation; 2621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 263167b824ce1947bf71ec8a71296daa2c54ebe58dfAnders Carlsson if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD)) { 264167b824ce1947bf71ec8a71296daa2c54ebe58dfAnders Carlsson // C++ member functions defined inside the class are always inline. 2657ced9c8529b734e313f62a3b81189d6f402f6713Douglas Gregor if (MD->isInlined()) 266167b824ce1947bf71ec8a71296daa2c54ebe58dfAnders Carlsson return CodeGenModule::GVA_CXXInline; 2671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2681fd2dd145d9bcdf0b8d60a88e1795b6ae83656f5Douglas Gregor return External; 269167b824ce1947bf71ec8a71296daa2c54ebe58dfAnders Carlsson } 2701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 27143907e87c776391d7d96da04b48e7bf06d8baafcEli Friedman // "static" functions get internal linkage. 2725e222139610a9f8b2b5f4ddd112f10dec9ec1e97Eli Friedman if (FD->getStorageClass() == FunctionDecl::Static) 2737c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar return CodeGenModule::GVA_Internal; 2747c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 2757ced9c8529b734e313f62a3b81189d6f402f6713Douglas Gregor if (!FD->isInlined()) 2761fd2dd145d9bcdf0b8d60a88e1795b6ae83656f5Douglas Gregor return External; 2771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2781fc09a92d0bffda20e06fa882388c01e192e2069Douglas Gregor if (!Features.CPlusPlus || FD->hasAttr<GNUInlineAttr>()) { 2791fc09a92d0bffda20e06fa882388c01e192e2069Douglas Gregor // GNU or C99 inline semantics. Determine whether this symbol should be 2801fc09a92d0bffda20e06fa882388c01e192e2069Douglas Gregor // externally visible. 2811fc09a92d0bffda20e06fa882388c01e192e2069Douglas Gregor if (FD->isInlineDefinitionExternallyVisible()) 2821fc09a92d0bffda20e06fa882388c01e192e2069Douglas Gregor return External; 283cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner 2841fc09a92d0bffda20e06fa882388c01e192e2069Douglas Gregor // C99 inline semantics, where the symbol is not externally visible. 285b3efa98e320590e8be9d62818e89e599303e65b4Douglas Gregor return CodeGenModule::GVA_C99Inline; 2861fc09a92d0bffda20e06fa882388c01e192e2069Douglas Gregor } 287b3efa98e320590e8be9d62818e89e599303e65b4Douglas Gregor 2881fc09a92d0bffda20e06fa882388c01e192e2069Douglas Gregor // C++ inline semantics 2891fc09a92d0bffda20e06fa882388c01e192e2069Douglas Gregor assert(Features.CPlusPlus && "Must be in C++ mode"); 2901fc09a92d0bffda20e06fa882388c01e192e2069Douglas Gregor return CodeGenModule::GVA_CXXInline; 2917c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar} 2927c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 2937c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar/// SetFunctionDefinitionAttributes - Set attributes for a global. 294b97b69244a4e7916c7b8fca28fa21b36ce5b30b2Daniel Dunbar/// 295f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump/// FIXME: This is currently only done for aliases and functions, but not for 296f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump/// variables (these details are set in EmitGlobalVarDefinition for variables). 2977c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbarvoid CodeGenModule::SetFunctionDefinitionAttributes(const FunctionDecl *D, 2987c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar llvm::GlobalValue *GV) { 29968584ed35ad819a1668e3f527ba7f5dd4ae6a333Douglas Gregor GVALinkage Linkage = GetLinkageForFunction(getContext(), D, Features); 3007c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 30155d6f50b23a1fd0a04b568787a25beb7537e6c9bDaniel Dunbar if (Linkage == GVA_Internal) { 3029f9427999cf69b3b89cd0ed3be16ed27a1c282c7Chris Lattner GV->setLinkage(llvm::Function::InternalLinkage); 30340b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis } else if (D->hasAttr<DLLExportAttr>()) { 3047c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar GV->setLinkage(llvm::Function::DLLExportLinkage); 30540b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis } else if (D->hasAttr<WeakAttr>()) { 30644b0bc008ee11cdee69ad12210ca7550e4fa426aChris Lattner GV->setLinkage(llvm::Function::WeakAnyLinkage); 307cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner } else if (Linkage == GVA_C99Inline) { 308cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner // In C99 mode, 'inline' functions are guaranteed to have a strong 309cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner // definition somewhere else, so we can use available_externally linkage. 310d9d049a93c55624908e81cf3927b7905efeba05fChris Lattner GV->setLinkage(llvm::Function::AvailableExternallyLinkage); 3111fd2dd145d9bcdf0b8d60a88e1795b6ae83656f5Douglas Gregor } else if (Linkage == GVA_CXXInline || Linkage == GVA_TemplateInstantiation) { 31286daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner // In C++, the compiler has to emit a definition in every translation unit 31386daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner // that references the function. We should use linkonce_odr because 31486daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner // a) if all references in this translation unit are optimized away, we 31586daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner // don't need to codegen it. b) if the function persists, it needs to be 31686daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner // merged with other definitions. c) C++ has the ODR, so we know the 31786daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner // definition is dependable. 31886daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner GV->setLinkage(llvm::Function::LinkOnceODRLinkage); 3197c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar } else { 320cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner assert(Linkage == GVA_StrongExternal); 321cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner // Otherwise, we have strong external linkage. 3227c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar GV->setLinkage(llvm::Function::ExternalLinkage); 3230dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar } 324d4cbda6292b321c2e7dce7f039d92918fee99b3aNuno Lopes 3257c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar SetCommonAttributes(D, GV); 326d4cbda6292b321c2e7dce7f039d92918fee99b3aNuno Lopes} 327d4cbda6292b321c2e7dce7f039d92918fee99b3aNuno Lopes 3287dbd8197040313d796282d4af06eccdf8a17319cDaniel Dunbarvoid CodeGenModule::SetLLVMFunctionAttributes(const Decl *D, 3291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const CGFunctionInfo &Info, 3307dbd8197040313d796282d4af06eccdf8a17319cDaniel Dunbar llvm::Function *F) { 331ca6408c3176783f0b29da4679a08512aa05f0c73Daniel Dunbar unsigned CallingConv; 332761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patel AttributeListType AttributeList; 333ca6408c3176783f0b29da4679a08512aa05f0c73Daniel Dunbar ConstructAttributeList(Info, D, AttributeList, CallingConv); 334761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patel F->setAttributes(llvm::AttrListPtr::get(AttributeList.begin(), 335ca6408c3176783f0b29da4679a08512aa05f0c73Daniel Dunbar AttributeList.size())); 336ca6408c3176783f0b29da4679a08512aa05f0c73Daniel Dunbar F->setCallingConv(static_cast<llvm::CallingConv::ID>(CallingConv)); 337f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar} 338f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar 3397c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbarvoid CodeGenModule::SetLLVMFunctionAttributesForDefinition(const Decl *D, 3407c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar llvm::Function *F) { 34174ac74ae244c501027924c99f2a33559a1e23b53Daniel Dunbar if (!Features.Exceptions && !Features.ObjCNonFragileABI) 3421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump F->addFnAttr(llvm::Attribute::NoUnwind); 343af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar 34440b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (D->hasAttr<AlwaysInlineAttr>()) 345af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar F->addFnAttr(llvm::Attribute::AlwaysInline); 3461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3471feade8e520be483293dbf55eb57a51720899589Mike Stump if (D->hasAttr<NoInlineAttr>()) 34881ebbde0fb30a40df0f5e913d8a1f71c383d271aAnders Carlsson F->addFnAttr(llvm::Attribute::NoInline); 349f55314dce992fd60816ba337ad151a2fb7c42239Mike Stump 350f55314dce992fd60816ba337ad151a2fb7c42239Mike Stump if (const AlignedAttr *AA = D->getAttr<AlignedAttr>()) 351f55314dce992fd60816ba337ad151a2fb7c42239Mike Stump F->setAlignment(AA->getAlignment()/8); 352fb51ddfafcd5f8536d0312b3daa3c0b74b90ab5bMike Stump // C++ ABI requires 2-byte alignment for member functions. 353bd6dbd19781cefd5b5ff9750c8bf86e6c341a68cMike Stump if (F->getAlignment() < 2 && isa<CXXMethodDecl>(D)) 354bd6dbd19781cefd5b5ff9750c8bf86e6c341a68cMike Stump F->setAlignment(2); 355f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar} 356f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar 3571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpvoid CodeGenModule::SetCommonAttributes(const Decl *D, 3587c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar llvm::GlobalValue *GV) { 3597c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar setGlobalVisibility(GV, D); 3607c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 36140b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (D->hasAttr<UsedAttr>()) 3627c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar AddUsedGlobal(GV); 3637c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 36440b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (const SectionAttr *SA = D->getAttr<SectionAttr>()) 3657c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar GV->setSection(SA->getName()); 3667c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar} 3677c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 3680e4f40e1bbc4dce16bbb9870300a435419f1b3d5Daniel Dunbarvoid CodeGenModule::SetInternalFunctionAttributes(const Decl *D, 3690e4f40e1bbc4dce16bbb9870300a435419f1b3d5Daniel Dunbar llvm::Function *F, 3700e4f40e1bbc4dce16bbb9870300a435419f1b3d5Daniel Dunbar const CGFunctionInfo &FI) { 3710e4f40e1bbc4dce16bbb9870300a435419f1b3d5Daniel Dunbar SetLLVMFunctionAttributes(D, FI, F); 3720e4f40e1bbc4dce16bbb9870300a435419f1b3d5Daniel Dunbar SetLLVMFunctionAttributesForDefinition(D, F); 3737c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 3747c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar F->setLinkage(llvm::Function::InternalLinkage); 3757c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 3760e4f40e1bbc4dce16bbb9870300a435419f1b3d5Daniel Dunbar SetCommonAttributes(D, F); 377f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar} 378f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar 379f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbarvoid CodeGenModule::SetFunctionAttributes(const FunctionDecl *FD, 380c6c14d1cd68afcd90d097715296377f15be45210Eli Friedman llvm::Function *F, 381c6c14d1cd68afcd90d097715296377f15be45210Eli Friedman bool IsIncompleteFunction) { 382c6c14d1cd68afcd90d097715296377f15be45210Eli Friedman if (!IsIncompleteFunction) 383c6c14d1cd68afcd90d097715296377f15be45210Eli Friedman SetLLVMFunctionAttributes(FD, getTypes().getFunctionInfo(FD), F); 3841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3857c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // Only a few attributes are set on declarations; these may later be 3867c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // overridden by a definition. 3871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 38840b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (FD->hasAttr<DLLImportAttr>()) { 3897c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar F->setLinkage(llvm::Function::DLLImportLinkage); 3901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } else if (FD->hasAttr<WeakAttr>() || 39140b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis FD->hasAttr<WeakImportAttr>()) { 3927c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // "extern_weak" is overloaded in LLVM; we probably should have 3931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // separate linkage types for this. 3947c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar F->setLinkage(llvm::Function::ExternalWeakLinkage); 3957c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar } else { 3961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump F->setLinkage(llvm::Function::ExternalLinkage); 3977c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar } 3987c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 39940b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (const SectionAttr *SA = FD->getAttr<SectionAttr>()) 4007c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar F->setSection(SA->getName()); 401219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar} 402219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 4030269871c9cba493f76237175ab60313406f3bafaDaniel Dunbarvoid CodeGenModule::AddUsedGlobal(llvm::GlobalValue *GV) { 4041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert(!GV->isDeclaration() && 4050269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar "Only globals with definition can force usage."); 40635f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner LLVMUsed.push_back(GV); 4070269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar} 4080269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar 4090269871c9cba493f76237175ab60313406f3bafaDaniel Dunbarvoid CodeGenModule::EmitLLVMUsed() { 4100269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar // Don't create llvm.used if there is no need. 411ad64e024bd18cf25dcfa44e049004371838decd8Chris Lattner if (LLVMUsed.empty()) 4120269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar return; 4130269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar 4143c0ef8cc0dc246bd3083e8cdd63005e8873d36d2Benjamin Kramer const llvm::Type *i8PTy = llvm::Type::getInt8PtrTy(VMContext); 4151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 41635f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner // Convert LLVMUsed to what ConstantArray needs. 41735f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner std::vector<llvm::Constant*> UsedArray; 41835f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner UsedArray.resize(LLVMUsed.size()); 41935f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner for (unsigned i = 0, e = LLVMUsed.size(); i != e; ++i) { 4201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump UsedArray[i] = 4211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::ConstantExpr::getBitCast(cast<llvm::Constant>(&*LLVMUsed[i]), 422a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson i8PTy); 42335f38a2c22d68c22e2dbe8e9ee84c120c8f327bbChris Lattner } 4241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 425c38e9affd4519ea199af22419c8c794973cc4b23Fariborz Jahanian if (UsedArray.empty()) 426c38e9affd4519ea199af22419c8c794973cc4b23Fariborz Jahanian return; 42796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ATy = llvm::ArrayType::get(i8PTy, UsedArray.size()); 4281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalVariable *GV = 4301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump new llvm::GlobalVariable(getModule(), ATy, false, 4310269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar llvm::GlobalValue::AppendingLinkage, 4327db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::ConstantArray::get(ATy, UsedArray), 4331c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson "llvm.used"); 4340269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar 4350269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar GV->setSection("llvm.metadata"); 4360269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar} 4370269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar 4380269871c9cba493f76237175ab60313406f3bafaDaniel Dunbarvoid CodeGenModule::EmitDeferred() { 43967b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Emit code for any potentially referenced deferred decls. Since a 44067b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // previously unused static decl may become used during the generation of code 44167b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // for a static function, iterate until no changes are made. 44267b00520c8f5b48fad722b790d87fea6be764efeChris Lattner while (!DeferredDeclsToEmit.empty()) { 4432a131fbca2a51085dc083b8c56a2d4ced3cf1413Anders Carlsson GlobalDecl D = DeferredDeclsToEmit.back(); 44467b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDeclsToEmit.pop_back(); 44567b00520c8f5b48fad722b790d87fea6be764efeChris Lattner 44667b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // The mangled name for the decl must have been emitted in GlobalDeclMap. 44767b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Look it up to see if it was defined with a stronger definition (e.g. an 44867b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // extern inline function with a strong function redefinition). If so, 44967b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // just ignore the deferred decl. 45067b00520c8f5b48fad722b790d87fea6be764efeChris Lattner llvm::GlobalValue *CGRef = GlobalDeclMap[getMangledName(D)]; 45167b00520c8f5b48fad722b790d87fea6be764efeChris Lattner assert(CGRef && "Deferred decl wasn't referenced?"); 4521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 45367b00520c8f5b48fad722b790d87fea6be764efeChris Lattner if (!CGRef->isDeclaration()) 45467b00520c8f5b48fad722b790d87fea6be764efeChris Lattner continue; 4551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 45667b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Otherwise, emit the definition and move on to the next one. 45767b00520c8f5b48fad722b790d87fea6be764efeChris Lattner EmitGlobalDefinition(D); 45867b00520c8f5b48fad722b790d87fea6be764efeChris Lattner } 4595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 4605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 4611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// EmitAnnotateAttr - Generate the llvm::ConstantStruct which contains the 4628bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// annotation information for a given GlobalValue. The annotation struct is 4631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// {i8 *, i8 *, i8 *, i32}. The first field is a constant expression, the 4641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// GlobalValue being annotated. The second field is the constant string 4651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// created from the AnnotateAttr's annotation. The third field is a constant 4668bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// string containing the name of the translation unit. The fourth field is 4678bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// the line number in the file of the annotated value declaration. 4688bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// 4698bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// FIXME: this does not unique the annotation string constants, as llvm-gcc 4708bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// appears to. 4718bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// 4721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpllvm::Constant *CodeGenModule::EmitAnnotateAttr(llvm::GlobalValue *GV, 4738bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman const AnnotateAttr *AA, 4748bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman unsigned LineNo) { 4758bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::Module *M = &getModule(); 4768bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman 4778bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman // get [N x i8] constants for the annotation string, and the filename string 4788bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman // which are the 2nd and 3rd elements of the global annotation structure. 4793c0ef8cc0dc246bd3083e8cdd63005e8873d36d2Benjamin Kramer const llvm::Type *SBP = llvm::Type::getInt8PtrTy(VMContext); 4801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Constant *anno = llvm::ConstantArray::get(VMContext, 4810032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson AA->getAnnotation(), true); 4820032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Constant *unit = llvm::ConstantArray::get(VMContext, 4830032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson M->getModuleIdentifier(), 4848bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman true); 4858bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman 4868bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman // Get the two global values corresponding to the ConstantArrays we just 4878bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman // created to hold the bytes of the strings. 4881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalValue *annoGV = 48995b851e55c328af4b69da7bfc1124bf258c0ffe5Chris Lattner new llvm::GlobalVariable(*M, anno->getType(), false, 49095b851e55c328af4b69da7bfc1124bf258c0ffe5Chris Lattner llvm::GlobalValue::PrivateLinkage, anno, 49195b851e55c328af4b69da7bfc1124bf258c0ffe5Chris Lattner GV->getName()); 4928bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman // translation unit name string, emitted into the llvm.metadata section. 4938bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::GlobalValue *unitGV = 49495b851e55c328af4b69da7bfc1124bf258c0ffe5Chris Lattner new llvm::GlobalVariable(*M, unit->getType(), false, 4951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalValue::PrivateLinkage, unit, 49695b851e55c328af4b69da7bfc1124bf258c0ffe5Chris Lattner ".str"); 4978bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman 49857d5cee133495bc21d1abdbce45ab05a79274a23Daniel Dunbar // Create the ConstantStruct for the global annotation. 4998bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::Constant *Fields[4] = { 5003c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(GV, SBP), 5013c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(annoGV, SBP), 5023c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(unitGV, SBP), 5030032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), LineNo) 5048bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman }; 50547a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson return llvm::ConstantStruct::get(VMContext, Fields, 4, false); 5068bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman} 5078bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman 50873241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbarbool CodeGenModule::MayDeferGeneration(const ValueDecl *Global) { 5095c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar // Never defer when EmitAllDecls is specified or the decl has 5105c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar // attribute used. 51140b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (Features.EmitAllDecls || Global->hasAttr<UsedAttr>()) 51273241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar return false; 513bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 514bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(Global)) { 51573241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar // Constructors and destructors should never be deferred. 5161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (FD->hasAttr<ConstructorAttr>() || 51740b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis FD->hasAttr<DestructorAttr>()) 51873241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar return false; 51973241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar 52068584ed35ad819a1668e3f527ba7f5dd4ae6a333Douglas Gregor GVALinkage Linkage = GetLinkageForFunction(getContext(), FD, Features); 5211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 522dbb5a376c8b9272813a30c5519031e9ea2fb071fChris Lattner // static, static inline, always_inline, and extern inline functions can 52386daeee2d4aa6523679f07f27a826bf4c42ca95dChris Lattner // always be deferred. Normal inline functions can be deferred in C99/C++. 524cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner if (Linkage == GVA_Internal || Linkage == GVA_C99Inline || 525cbb8fc18d86a886856f5b852a6a3ead71fec17f9Chris Lattner Linkage == GVA_CXXInline) 526dbb5a376c8b9272813a30c5519031e9ea2fb071fChris Lattner return true; 527dbb5a376c8b9272813a30c5519031e9ea2fb071fChris Lattner return false; 52873241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar } 5291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 530dbb5a376c8b9272813a30c5519031e9ea2fb071fChris Lattner const VarDecl *VD = cast<VarDecl>(Global); 531dbb5a376c8b9272813a30c5519031e9ea2fb071fChris Lattner assert(VD->isFileVarDecl() && "Invalid decl"); 532b6c8c8bd8d362c8a6cdb767415b0d21e62b77eb2Douglas Gregor 53374d644abe56809d9bcea7311f37aa9063ab9e064Anders Carlsson // We never want to defer structs that have non-trivial constructors or 53474d644abe56809d9bcea7311f37aa9063ab9e064Anders Carlsson // destructors. 53574d644abe56809d9bcea7311f37aa9063ab9e064Anders Carlsson 53674d644abe56809d9bcea7311f37aa9063ab9e064Anders Carlsson // FIXME: Handle references. 53774d644abe56809d9bcea7311f37aa9063ab9e064Anders Carlsson if (const RecordType *RT = VD->getType()->getAs<RecordType>()) { 53874d644abe56809d9bcea7311f37aa9063ab9e064Anders Carlsson if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(RT->getDecl())) { 53974d644abe56809d9bcea7311f37aa9063ab9e064Anders Carlsson if (!RD->hasTrivialConstructor() || !RD->hasTrivialDestructor()) 54074d644abe56809d9bcea7311f37aa9063ab9e064Anders Carlsson return false; 54174d644abe56809d9bcea7311f37aa9063ab9e064Anders Carlsson } 54274d644abe56809d9bcea7311f37aa9063ab9e064Anders Carlsson } 54374d644abe56809d9bcea7311f37aa9063ab9e064Anders Carlsson 5441028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor // Static data may be deferred, but out-of-line static data members 5451028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor // cannot be. 5461028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor // FIXME: What if the initializer has side effects? 5471028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor return VD->isInAnonymousNamespace() || 5481028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor (VD->getStorageClass() == VarDecl::Static && 5491028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor !(VD->isStaticDataMember() && VD->isOutOfLine())); 55073241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar} 55173241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar 552b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattnervoid CodeGenModule::EmitGlobal(GlobalDecl GD) { 5534a6835e650ff24e19ce08a3bd347c0ad186777fdAnders Carlsson const ValueDecl *Global = cast<ValueDecl>(GD.getDecl()); 5541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 555bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // If this is an alias definition (which otherwise looks like a declaration) 556bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // emit it now. 55740b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (Global->hasAttr<AliasAttr>()) 558bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner return EmitAliasDefinition(Global); 559219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 56067b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Ignore declarations, they will be emitted on their first use. 5615e1e1f95c98b1add70c238093bbd5dc8d4f9c4e9Daniel Dunbar if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(Global)) { 56273241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar // Forward declarations are emitted lazily on first use. 56373241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar if (!FD->isThisDeclarationADefinition()) 56473241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar return; 5650269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar } else { 5660269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar const VarDecl *VD = cast<VarDecl>(Global); 567bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar assert(VD->isFileVarDecl() && "Cannot emit local var decl as global."); 568bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 569b6c8c8bd8d362c8a6cdb767415b0d21e62b77eb2Douglas Gregor // In C++, if this is marked "extern", defer code generation. 5702928c2107f2e0007f35fe1c224aab63535f1403dAnders Carlsson if (getLangOptions().CPlusPlus && !VD->getInit() && 5711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump (VD->getStorageClass() == VarDecl::Extern || 57248a83b5e7ae4051c7c11680ac00c1fa02d610a62Douglas Gregor VD->isExternC())) 573b6c8c8bd8d362c8a6cdb767415b0d21e62b77eb2Douglas Gregor return; 574b6c8c8bd8d362c8a6cdb767415b0d21e62b77eb2Douglas Gregor 575b6c8c8bd8d362c8a6cdb767415b0d21e62b77eb2Douglas Gregor // In C, if this isn't a definition, defer code generation. 576b6c8c8bd8d362c8a6cdb767415b0d21e62b77eb2Douglas Gregor if (!getLangOptions().CPlusPlus && !VD->getInit()) 57773241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar return; 5784c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman } 5794c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman 58067b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Defer code generation when possible if this is a static definition, inline 58167b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // function etc. These we only want to emit if they are used. 58273241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar if (MayDeferGeneration(Global)) { 58367b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // If the value has already been used, add it directly to the 58467b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // DeferredDeclsToEmit list. 5852a131fbca2a51085dc083b8c56a2d4ced3cf1413Anders Carlsson const char *MangledName = getMangledName(GD); 58667b00520c8f5b48fad722b790d87fea6be764efeChris Lattner if (GlobalDeclMap.count(MangledName)) 5872a131fbca2a51085dc083b8c56a2d4ced3cf1413Anders Carlsson DeferredDeclsToEmit.push_back(GD); 58867b00520c8f5b48fad722b790d87fea6be764efeChris Lattner else { 58967b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Otherwise, remember that we saw a deferred decl with this name. The 59067b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // first use of the mangled name will cause it to move into 59167b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // DeferredDeclsToEmit. 5922a131fbca2a51085dc083b8c56a2d4ced3cf1413Anders Carlsson DeferredDecls[MangledName] = GD; 59367b00520c8f5b48fad722b790d87fea6be764efeChris Lattner } 594bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar return; 595bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } 596bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 597bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar // Otherwise emit the definition. 5982a131fbca2a51085dc083b8c56a2d4ced3cf1413Anders Carlsson EmitGlobalDefinition(GD); 5994c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman} 6004c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman 601b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattnervoid CodeGenModule::EmitGlobalDefinition(GlobalDecl GD) { 6024a6835e650ff24e19ce08a3bd347c0ad186777fdAnders Carlsson const ValueDecl *D = cast<ValueDecl>(GD.getDecl()); 6031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6048e2efcc267ed12dc435782288b7f9a4a1bc56c72Anders Carlsson PrettyStackTraceDecl CrashInfo((ValueDecl *)D, D->getLocation(), 6058e2efcc267ed12dc435782288b7f9a4a1bc56c72Anders Carlsson Context.getSourceManager(), 6068e2efcc267ed12dc435782288b7f9a4a1bc56c72Anders Carlsson "Generating code for declaration"); 6078e2efcc267ed12dc435782288b7f9a4a1bc56c72Anders Carlsson 6082a131fbca2a51085dc083b8c56a2d4ced3cf1413Anders Carlsson if (const CXXConstructorDecl *CD = dyn_cast<CXXConstructorDecl>(D)) 6092a131fbca2a51085dc083b8c56a2d4ced3cf1413Anders Carlsson EmitCXXConstructor(CD, GD.getCtorType()); 6107267c1693abe7875b0c57268be05005ae013c6c9Anders Carlsson else if (const CXXDestructorDecl *DD = dyn_cast<CXXDestructorDecl>(D)) 6117267c1693abe7875b0c57268be05005ae013c6c9Anders Carlsson EmitCXXDestructor(DD, GD.getDtorType()); 612b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner else if (isa<FunctionDecl>(D)) 613b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner EmitGlobalFunctionDefinition(GD); 6142a131fbca2a51085dc083b8c56a2d4ced3cf1413Anders Carlsson else if (const VarDecl *VD = dyn_cast<VarDecl>(D)) 615bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar EmitGlobalVarDefinition(VD); 6162a131fbca2a51085dc083b8c56a2d4ced3cf1413Anders Carlsson else { 617bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar assert(0 && "Invalid argument to EmitGlobalDefinition()"); 618bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } 619bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar} 620bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 62174391b48b4791cded373683a3baf67314f358d50Chris Lattner/// GetOrCreateLLVMFunction - If the specified mangled name is not in the 62274391b48b4791cded373683a3baf67314f358d50Chris Lattner/// module, create and return an llvm Function with the specified type. If there 62374391b48b4791cded373683a3baf67314f358d50Chris Lattner/// is something in the module with the specified name, return it potentially 62474391b48b4791cded373683a3baf67314f358d50Chris Lattner/// bitcasted to the right type. 62574391b48b4791cded373683a3baf67314f358d50Chris Lattner/// 62674391b48b4791cded373683a3baf67314f358d50Chris Lattner/// If D is non-null, it specifies a decl that correspond to this. This is used 62774391b48b4791cded373683a3baf67314f358d50Chris Lattner/// to set the attributes on the function when it is first created. 62874391b48b4791cded373683a3baf67314f358d50Chris Lattnerllvm::Constant *CodeGenModule::GetOrCreateLLVMFunction(const char *MangledName, 62974391b48b4791cded373683a3baf67314f358d50Chris Lattner const llvm::Type *Ty, 630b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner GlobalDecl D) { 6310558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner // Lookup the entry, lazily creating it if necessary. 6320558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner llvm::GlobalValue *&Entry = GlobalDeclMap[MangledName]; 6330558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner if (Entry) { 6340558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner if (Entry->getType()->getElementType() == Ty) 6350558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner return Entry; 6361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6370558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner // Make sure the result is of the correct type. 63896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson const llvm::Type *PTy = llvm::PointerType::getUnqual(Ty); 6393c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson return llvm::ConstantExpr::getBitCast(Entry, PTy); 6400558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner } 6411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 64267b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // This is the first use or definition of a mangled name. If there is a 64367b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // deferred decl with this name, remember that we need to emit it at the end 64467b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // of the file. 6451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::DenseMap<const char*, GlobalDecl>::iterator DDI = 6469fa959d5bfbbb17d7c6ba71252219201fc8dc971Chris Lattner DeferredDecls.find(MangledName); 64767b00520c8f5b48fad722b790d87fea6be764efeChris Lattner if (DDI != DeferredDecls.end()) { 64867b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Move the potentially referenced deferred decl to the DeferredDeclsToEmit 64967b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // list, and remove it from DeferredDecls (since we don't need it anymore). 65067b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDeclsToEmit.push_back(DDI->second); 65167b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDecls.erase(DDI); 652b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner } else if (const FunctionDecl *FD = cast_or_null<FunctionDecl>(D.getDecl())) { 6530c337ed63ff0f04fd8315afabb2d7a51969fdc97Chris Lattner // If this the first reference to a C++ inline function in a class, queue up 6540c337ed63ff0f04fd8315afabb2d7a51969fdc97Chris Lattner // the deferred function body for emission. These are not seen as 6550c337ed63ff0f04fd8315afabb2d7a51969fdc97Chris Lattner // top-level declarations. 656b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner if (FD->isThisDeclarationADefinition() && MayDeferGeneration(FD)) 657b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner DeferredDeclsToEmit.push_back(D); 658c7ff8e19081c2e974f05f66c4fa9b40750fc655fFariborz Jahanian // A called constructor which has no definition or declaration need be 659c7ff8e19081c2e974f05f66c4fa9b40750fc655fFariborz Jahanian // synthesized. 660c7ff8e19081c2e974f05f66c4fa9b40750fc655fFariborz Jahanian else if (const CXXConstructorDecl *CD = dyn_cast<CXXConstructorDecl>(FD)) { 6611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const CXXRecordDecl *ClassDecl = 662c7ff8e19081c2e974f05f66c4fa9b40750fc655fFariborz Jahanian cast<CXXRecordDecl>(CD->getDeclContext()); 66397a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian if (CD->isCopyConstructor(getContext())) 66497a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian DeferredCopyConstructorToEmit(D); 6659889652dbc10060cd604861ed2e5bc6719f845b0Fariborz Jahanian else if (!ClassDecl->hasUserDeclaredConstructor()) 666c7ff8e19081c2e974f05f66c4fa9b40750fc655fFariborz Jahanian DeferredDeclsToEmit.push_back(D); 667c7ff8e19081c2e974f05f66c4fa9b40750fc655fFariborz Jahanian } 6681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump else if (isa<CXXDestructorDecl>(FD)) 669b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian DeferredDestructorToEmit(D); 670ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian else if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD)) 671ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian if (MD->isCopyAssignment()) 672ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian DeferredCopyAssignmentToEmit(D); 67367b00520c8f5b48fad722b790d87fea6be764efeChris Lattner } 6741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6750558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner // This function doesn't have a complete type (for example, the return 6760558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner // type is an incomplete struct). Use a fake type instead, and make 6770558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner // sure not to try to set attributes. 678c6c14d1cd68afcd90d097715296377f15be45210Eli Friedman bool IsIncompleteFunction = false; 6790558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner if (!isa<llvm::FunctionType>(Ty)) { 6800032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson Ty = llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), 6810558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner std::vector<const llvm::Type*>(), false); 682c6c14d1cd68afcd90d097715296377f15be45210Eli Friedman IsIncompleteFunction = true; 6830558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner } 6841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Function *F = llvm::Function::Create(cast<llvm::FunctionType>(Ty), 6850558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner llvm::Function::ExternalLinkage, 686d972678a053d4785772b75cf6c8d4ab74ac2c7f6Chris Lattner "", &getModule()); 687d972678a053d4785772b75cf6c8d4ab74ac2c7f6Chris Lattner F->setName(MangledName); 688c6c14d1cd68afcd90d097715296377f15be45210Eli Friedman if (D.getDecl()) 689c6c14d1cd68afcd90d097715296377f15be45210Eli Friedman SetFunctionAttributes(cast<FunctionDecl>(D.getDecl()), F, 690c6c14d1cd68afcd90d097715296377f15be45210Eli Friedman IsIncompleteFunction); 6910558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner Entry = F; 6920558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner return F; 6930558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner} 6940558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner 69597a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian/// Defer definition of copy constructor(s) which need be implicitly defined. 69697a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanianvoid CodeGenModule::DeferredCopyConstructorToEmit(GlobalDecl CopyCtorDecl) { 6971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const CXXConstructorDecl *CD = 69897a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian cast<CXXConstructorDecl>(CopyCtorDecl.getDecl()); 69997a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian const CXXRecordDecl *ClassDecl = cast<CXXRecordDecl>(CD->getDeclContext()); 70097a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian if (ClassDecl->hasTrivialCopyConstructor() || 70197a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian ClassDecl->hasUserDeclaredCopyConstructor()) 70297a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian return; 7031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 70497a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian // First make sure all direct base classes and virtual bases and non-static 70597a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian // data mebers which need to have their copy constructors implicitly defined 70697a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian // are defined. 12.8.p7 70797a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian for (CXXRecordDecl::base_class_const_iterator Base = ClassDecl->bases_begin(); 70897a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian Base != ClassDecl->bases_end(); ++Base) { 70997a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian CXXRecordDecl *BaseClassDecl 71097a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian = cast<CXXRecordDecl>(Base->getType()->getAs<RecordType>()->getDecl()); 7111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (CXXConstructorDecl *BaseCopyCtor = 71280e4b9e0e87064a824d72b6ff89074206ecced58Fariborz Jahanian BaseClassDecl->getCopyConstructor(Context, 0)) 71397a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian GetAddrOfCXXConstructor(BaseCopyCtor, Ctor_Complete); 71497a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian } 7151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 71697a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian for (CXXRecordDecl::field_iterator Field = ClassDecl->field_begin(), 71797a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian FieldEnd = ClassDecl->field_end(); 71897a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian Field != FieldEnd; ++Field) { 71997a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian QualType FieldType = Context.getCanonicalType((*Field)->getType()); 72097a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian if (const ArrayType *Array = Context.getAsArrayType(FieldType)) 72197a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian FieldType = Array->getElementType(); 72297a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian if (const RecordType *FieldClassType = FieldType->getAs<RecordType>()) { 723e64941280877d065a27e8cefd2a9038256d0e3acFariborz Jahanian if ((*Field)->isAnonymousStructOrUnion()) 724e64941280877d065a27e8cefd2a9038256d0e3acFariborz Jahanian continue; 72597a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian CXXRecordDecl *FieldClassDecl 726e64941280877d065a27e8cefd2a9038256d0e3acFariborz Jahanian = cast<CXXRecordDecl>(FieldClassType->getDecl()); 7271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (CXXConstructorDecl *FieldCopyCtor = 72880e4b9e0e87064a824d72b6ff89074206ecced58Fariborz Jahanian FieldClassDecl->getCopyConstructor(Context, 0)) 72997a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian GetAddrOfCXXConstructor(FieldCopyCtor, Ctor_Complete); 73097a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian } 73197a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian } 73297a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian DeferredDeclsToEmit.push_back(CopyCtorDecl); 733ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian} 734ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian 735ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian/// Defer definition of copy assignments which need be implicitly defined. 736ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanianvoid CodeGenModule::DeferredCopyAssignmentToEmit(GlobalDecl CopyAssignDecl) { 737ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian const CXXMethodDecl *CD = cast<CXXMethodDecl>(CopyAssignDecl.getDecl()); 738ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian const CXXRecordDecl *ClassDecl = cast<CXXRecordDecl>(CD->getDeclContext()); 7391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 740ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian if (ClassDecl->hasTrivialCopyAssignment() || 741ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian ClassDecl->hasUserDeclaredCopyAssignment()) 742ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian return; 7431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 744ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian // First make sure all direct base classes and virtual bases and non-static 745ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian // data mebers which need to have their copy assignments implicitly defined 746ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian // are defined. 12.8.p12 747ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian for (CXXRecordDecl::base_class_const_iterator Base = ClassDecl->bases_begin(); 748ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian Base != ClassDecl->bases_end(); ++Base) { 749ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian CXXRecordDecl *BaseClassDecl 750ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian = cast<CXXRecordDecl>(Base->getType()->getAs<RecordType>()->getDecl()); 751ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian const CXXMethodDecl *MD = 0; 752183d7181fd59842ac969cbc6fe0376f85dc63ae4Fariborz Jahanian if (!BaseClassDecl->hasTrivialCopyAssignment() && 753183d7181fd59842ac969cbc6fe0376f85dc63ae4Fariborz Jahanian !BaseClassDecl->hasUserDeclaredCopyAssignment() && 754183d7181fd59842ac969cbc6fe0376f85dc63ae4Fariborz Jahanian BaseClassDecl->hasConstCopyAssignment(getContext(), MD)) 755555b4bb2749aea2ec8e2adc351a71ec1cb9bdc33Anders Carlsson GetAddrOfFunction(MD, 0); 756ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian } 7571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 758ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian for (CXXRecordDecl::field_iterator Field = ClassDecl->field_begin(), 759ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian FieldEnd = ClassDecl->field_end(); 760ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian Field != FieldEnd; ++Field) { 761ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian QualType FieldType = Context.getCanonicalType((*Field)->getType()); 762ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian if (const ArrayType *Array = Context.getAsArrayType(FieldType)) 763ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian FieldType = Array->getElementType(); 764ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian if (const RecordType *FieldClassType = FieldType->getAs<RecordType>()) { 765ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian if ((*Field)->isAnonymousStructOrUnion()) 766ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian continue; 767ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian CXXRecordDecl *FieldClassDecl 768ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian = cast<CXXRecordDecl>(FieldClassType->getDecl()); 769ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian const CXXMethodDecl *MD = 0; 770183d7181fd59842ac969cbc6fe0376f85dc63ae4Fariborz Jahanian if (!FieldClassDecl->hasTrivialCopyAssignment() && 771183d7181fd59842ac969cbc6fe0376f85dc63ae4Fariborz Jahanian !FieldClassDecl->hasUserDeclaredCopyAssignment() && 772183d7181fd59842ac969cbc6fe0376f85dc63ae4Fariborz Jahanian FieldClassDecl->hasConstCopyAssignment(getContext(), MD)) 773555b4bb2749aea2ec8e2adc351a71ec1cb9bdc33Anders Carlsson GetAddrOfFunction(MD, 0); 774ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian } 775ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian } 7761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DeferredDeclsToEmit.push_back(CopyAssignDecl); 77797a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian} 77897a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian 779b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanianvoid CodeGenModule::DeferredDestructorToEmit(GlobalDecl DtorDecl) { 780b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian const CXXDestructorDecl *DD = cast<CXXDestructorDecl>(DtorDecl.getDecl()); 781b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian const CXXRecordDecl *ClassDecl = cast<CXXRecordDecl>(DD->getDeclContext()); 782b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian if (ClassDecl->hasTrivialDestructor() || 783b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian ClassDecl->hasUserDeclaredDestructor()) 784b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian return; 785b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian 786b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian for (CXXRecordDecl::base_class_const_iterator Base = ClassDecl->bases_begin(); 787b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian Base != ClassDecl->bases_end(); ++Base) { 788b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian CXXRecordDecl *BaseClassDecl 789b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian = cast<CXXRecordDecl>(Base->getType()->getAs<RecordType>()->getDecl()); 7901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (const CXXDestructorDecl *BaseDtor = 791b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian BaseClassDecl->getDestructor(Context)) 792b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian GetAddrOfCXXDestructor(BaseDtor, Dtor_Complete); 793b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian } 7941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 795b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian for (CXXRecordDecl::field_iterator Field = ClassDecl->field_begin(), 796b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian FieldEnd = ClassDecl->field_end(); 797b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian Field != FieldEnd; ++Field) { 798b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian QualType FieldType = Context.getCanonicalType((*Field)->getType()); 799b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian if (const ArrayType *Array = Context.getAsArrayType(FieldType)) 800b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian FieldType = Array->getElementType(); 801b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian if (const RecordType *FieldClassType = FieldType->getAs<RecordType>()) { 802b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian if ((*Field)->isAnonymousStructOrUnion()) 803b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian continue; 804b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian CXXRecordDecl *FieldClassDecl 805b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian = cast<CXXRecordDecl>(FieldClassType->getDecl()); 8061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (const CXXDestructorDecl *FieldDtor = 807b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian FieldClassDecl->getDestructor(Context)) 808b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian GetAddrOfCXXDestructor(FieldDtor, Dtor_Complete); 809b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian } 810b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian } 811b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian DeferredDeclsToEmit.push_back(DtorDecl); 812b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian} 813b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian 814b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian 81574391b48b4791cded373683a3baf67314f358d50Chris Lattner/// GetAddrOfFunction - Return the address of the given function. If Ty is 81674391b48b4791cded373683a3baf67314f358d50Chris Lattner/// non-null, then this function will use the specified type if it has to 81774391b48b4791cded373683a3baf67314f358d50Chris Lattner/// create it (this occurs when we see a definition of the function). 818b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattnerllvm::Constant *CodeGenModule::GetAddrOfFunction(GlobalDecl GD, 81974391b48b4791cded373683a3baf67314f358d50Chris Lattner const llvm::Type *Ty) { 82074391b48b4791cded373683a3baf67314f358d50Chris Lattner // If there was no specific requested type, just convert it now. 82174391b48b4791cded373683a3baf67314f358d50Chris Lattner if (!Ty) 8224a6835e650ff24e19ce08a3bd347c0ad186777fdAnders Carlsson Ty = getTypes().ConvertType(cast<ValueDecl>(GD.getDecl())->getType()); 8234fe95f99a2693f1145785ea5835ba6937e49c730Douglas Gregor return GetOrCreateLLVMFunction(getMangledName(GD), Ty, GD); 82474391b48b4791cded373683a3baf67314f358d50Chris Lattner} 82577ba708819285931932ecd33691a672bb59d221aEli Friedman 82674391b48b4791cded373683a3baf67314f358d50Chris Lattner/// CreateRuntimeFunction - Create a new runtime function with the specified 82774391b48b4791cded373683a3baf67314f358d50Chris Lattner/// type and name. 82874391b48b4791cded373683a3baf67314f358d50Chris Lattnerllvm::Constant * 82974391b48b4791cded373683a3baf67314f358d50Chris LattnerCodeGenModule::CreateRuntimeFunction(const llvm::FunctionType *FTy, 83074391b48b4791cded373683a3baf67314f358d50Chris Lattner const char *Name) { 83174391b48b4791cded373683a3baf67314f358d50Chris Lattner // Convert Name to be a uniqued string from the IdentifierInfo table. 832e013d685c6689ac7ae103ee88acf573422d1ed6aDaniel Dunbar Name = getContext().Idents.get(Name).getNameStart(); 833b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner return GetOrCreateLLVMFunction(Name, FTy, GlobalDecl()); 83474391b48b4791cded373683a3baf67314f358d50Chris Lattner} 835bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 83674391b48b4791cded373683a3baf67314f358d50Chris Lattner/// GetOrCreateLLVMGlobal - If the specified mangled name is not in the module, 83774391b48b4791cded373683a3baf67314f358d50Chris Lattner/// create and return an llvm GlobalVariable with the specified type. If there 83874391b48b4791cded373683a3baf67314f358d50Chris Lattner/// is something in the module with the specified name, return it potentially 83974391b48b4791cded373683a3baf67314f358d50Chris Lattner/// bitcasted to the right type. 84074391b48b4791cded373683a3baf67314f358d50Chris Lattner/// 84174391b48b4791cded373683a3baf67314f358d50Chris Lattner/// If D is non-null, it specifies a decl that correspond to this. This is used 84274391b48b4791cded373683a3baf67314f358d50Chris Lattner/// to set the attributes on the global when it is first created. 84374391b48b4791cded373683a3baf67314f358d50Chris Lattnerllvm::Constant *CodeGenModule::GetOrCreateLLVMGlobal(const char *MangledName, 84474391b48b4791cded373683a3baf67314f358d50Chris Lattner const llvm::PointerType*Ty, 84574391b48b4791cded373683a3baf67314f358d50Chris Lattner const VarDecl *D) { 8463c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar // Lookup the entry, lazily creating it if necessary. 8475d4f5c724533b994de05df49ae259120482ec366Chris Lattner llvm::GlobalValue *&Entry = GlobalDeclMap[MangledName]; 84899b53613ebe2c59d41030e987962c1ed101b2efeChris Lattner if (Entry) { 84974391b48b4791cded373683a3baf67314f358d50Chris Lattner if (Entry->getType() == Ty) 850570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner return Entry; 8511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 85299b53613ebe2c59d41030e987962c1ed101b2efeChris Lattner // Make sure the result is of the correct type. 8533c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson return llvm::ConstantExpr::getBitCast(Entry, Ty); 85499b53613ebe2c59d41030e987962c1ed101b2efeChris Lattner } 8551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 85667b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // This is the first use or definition of a mangled name. If there is a 85767b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // deferred decl with this name, remember that we need to emit it at the end 85867b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // of the file. 8591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::DenseMap<const char*, GlobalDecl>::iterator DDI = 86067b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDecls.find(MangledName); 86167b00520c8f5b48fad722b790d87fea6be764efeChris Lattner if (DDI != DeferredDecls.end()) { 86267b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Move the potentially referenced deferred decl to the DeferredDeclsToEmit 86367b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // list, and remove it from DeferredDecls (since we don't need it anymore). 86467b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDeclsToEmit.push_back(DDI->second); 86567b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDecls.erase(DDI); 86667b00520c8f5b48fad722b790d87fea6be764efeChris Lattner } 8671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalVariable *GV = 8691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump new llvm::GlobalVariable(getModule(), Ty->getElementType(), false, 87099b53613ebe2c59d41030e987962c1ed101b2efeChris Lattner llvm::GlobalValue::ExternalLinkage, 8711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 0, "", 0, 87256ebe5082da7411fb37479e230b52735f77cff35Eli Friedman false, Ty->getAddressSpace()); 873d972678a053d4785772b75cf6c8d4ab74ac2c7f6Chris Lattner GV->setName(MangledName); 87449988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar 87599b53613ebe2c59d41030e987962c1ed101b2efeChris Lattner // Handle things which are present even on external declarations. 87674391b48b4791cded373683a3baf67314f358d50Chris Lattner if (D) { 877f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump // FIXME: This code is overly simple and should be merged with other global 878f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump // handling. 87974391b48b4791cded373683a3baf67314f358d50Chris Lattner GV->setConstant(D->getType().isConstant(Context)); 88049988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar 88174391b48b4791cded373683a3baf67314f358d50Chris Lattner // FIXME: Merge with other attribute handling code. 88274391b48b4791cded373683a3baf67314f358d50Chris Lattner if (D->getStorageClass() == VarDecl::PrivateExtern) 88304d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar GV->setVisibility(llvm::GlobalValue::HiddenVisibility); 88449988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar 8851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (D->hasAttr<WeakAttr>() || 88640b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis D->hasAttr<WeakImportAttr>()) 88774391b48b4791cded373683a3baf67314f358d50Chris Lattner GV->setLinkage(llvm::GlobalValue::ExternalWeakLinkage); 88856ebe5082da7411fb37479e230b52735f77cff35Eli Friedman 88956ebe5082da7411fb37479e230b52735f77cff35Eli Friedman GV->setThreadLocal(D->isThreadSpecified()); 89074391b48b4791cded373683a3baf67314f358d50Chris Lattner } 8911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 89274391b48b4791cded373683a3baf67314f358d50Chris Lattner return Entry = GV; 89374391b48b4791cded373683a3baf67314f358d50Chris Lattner} 894eda9a5ec380f172f4e0063744eb796144a125480Daniel Dunbar 895eda9a5ec380f172f4e0063744eb796144a125480Daniel Dunbar 89674391b48b4791cded373683a3baf67314f358d50Chris Lattner/// GetAddrOfGlobalVar - Return the llvm::Constant for the address of the 89774391b48b4791cded373683a3baf67314f358d50Chris Lattner/// given global variable. If Ty is non-null and if the global doesn't exist, 89874391b48b4791cded373683a3baf67314f358d50Chris Lattner/// then it will be greated with the specified type instead of whatever the 89974391b48b4791cded373683a3baf67314f358d50Chris Lattner/// normal requested type would be. 90074391b48b4791cded373683a3baf67314f358d50Chris Lattnerllvm::Constant *CodeGenModule::GetAddrOfGlobalVar(const VarDecl *D, 90174391b48b4791cded373683a3baf67314f358d50Chris Lattner const llvm::Type *Ty) { 90274391b48b4791cded373683a3baf67314f358d50Chris Lattner assert(D->hasGlobalStorage() && "Not a global variable"); 90374391b48b4791cded373683a3baf67314f358d50Chris Lattner QualType ASTTy = D->getType(); 90474391b48b4791cded373683a3baf67314f358d50Chris Lattner if (Ty == 0) 90574391b48b4791cded373683a3baf67314f358d50Chris Lattner Ty = getTypes().ConvertTypeForMem(ASTTy); 9061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::PointerType *PTy = 90896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::get(Ty, ASTTy.getAddressSpace()); 90974391b48b4791cded373683a3baf67314f358d50Chris Lattner return GetOrCreateLLVMGlobal(getMangledName(D), PTy, D); 91074391b48b4791cded373683a3baf67314f358d50Chris Lattner} 9113f75c43bd77e063342bc888ac276daf64ba0ce07Daniel Dunbar 91274391b48b4791cded373683a3baf67314f358d50Chris Lattner/// CreateRuntimeVariable - Create a new runtime global variable with the 91374391b48b4791cded373683a3baf67314f358d50Chris Lattner/// specified type and name. 91474391b48b4791cded373683a3baf67314f358d50Chris Lattnerllvm::Constant * 91574391b48b4791cded373683a3baf67314f358d50Chris LattnerCodeGenModule::CreateRuntimeVariable(const llvm::Type *Ty, 91674391b48b4791cded373683a3baf67314f358d50Chris Lattner const char *Name) { 91774391b48b4791cded373683a3baf67314f358d50Chris Lattner // Convert Name to be a uniqued string from the IdentifierInfo table. 918e013d685c6689ac7ae103ee88acf573422d1ed6aDaniel Dunbar Name = getContext().Idents.get(Name).getNameStart(); 91996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson return GetOrCreateLLVMGlobal(Name, llvm::PointerType::getUnqual(Ty), 0); 920bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar} 921bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 92203f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbarvoid CodeGenModule::EmitTentativeDefinition(const VarDecl *D) { 92303f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar assert(!D->getInit() && "Cannot emit definite definitions here!"); 92403f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar 9257520bd1de12af10ea08c662440565adbdf589317Douglas Gregor if (MayDeferGeneration(D)) { 9267520bd1de12af10ea08c662440565adbdf589317Douglas Gregor // If we have not seen a reference to this variable yet, place it 9277520bd1de12af10ea08c662440565adbdf589317Douglas Gregor // into the deferred declarations table to be emitted if needed 9287520bd1de12af10ea08c662440565adbdf589317Douglas Gregor // later. 9297520bd1de12af10ea08c662440565adbdf589317Douglas Gregor const char *MangledName = getMangledName(D); 9307520bd1de12af10ea08c662440565adbdf589317Douglas Gregor if (GlobalDeclMap.count(MangledName) == 0) { 931555b4bb2749aea2ec8e2adc351a71ec1cb9bdc33Anders Carlsson DeferredDecls[MangledName] = D; 93203f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar return; 9337520bd1de12af10ea08c662440565adbdf589317Douglas Gregor } 9347520bd1de12af10ea08c662440565adbdf589317Douglas Gregor } 9357520bd1de12af10ea08c662440565adbdf589317Douglas Gregor 9367520bd1de12af10ea08c662440565adbdf589317Douglas Gregor // The tentative definition is the only definition. 93703f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar EmitGlobalVarDefinition(D); 93803f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar} 93903f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar 9401028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregorstatic CodeGenModule::GVALinkage 9411028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas GregorGetLinkageForVariable(ASTContext &Context, const VarDecl *VD) { 9421028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor // Everything located semantically within an anonymous namespace is 9431028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor // always internal. 9441028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor if (VD->isInAnonymousNamespace()) 9451028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor return CodeGenModule::GVA_Internal; 9461028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor 9471028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor // Handle linkage for static data members. 9481028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor if (VD->isStaticDataMember()) { 9491028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor switch (VD->getTemplateSpecializationKind()) { 9501028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor case TSK_Undeclared: 9511028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor case TSK_ExplicitSpecialization: 9521028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor case TSK_ExplicitInstantiationDefinition: 9531028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor return CodeGenModule::GVA_StrongExternal; 9541028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor 9551028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor case TSK_ExplicitInstantiationDeclaration: 9569f0306d969700c9d79a31d559f95a1eb4c0bfcb4Douglas Gregor llvm::llvm_unreachable("Variable should not be instantiated"); 9571028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor // Fall through to treat this like any other instantiation. 9581028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor 9591028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor case TSK_ImplicitInstantiation: 9601028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor return CodeGenModule::GVA_TemplateInstantiation; 9611028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor } 9621028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor } 9631028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor 9641028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor // Static variables get internal linkage. 9651028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor if (VD->getStorageClass() == VarDecl::Static) 9661028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor return CodeGenModule::GVA_Internal; 9671028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor 9681028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor return CodeGenModule::GVA_StrongExternal; 9691028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor} 9701028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor 971bd012ff1fa088181646a784f385b28867372d434Daniel Dunbarvoid CodeGenModule::EmitGlobalVarDefinition(const VarDecl *D) { 9728f32f7189b12f67aa4a19bc7c3855b599980eca0Chris Lattner llvm::Constant *Init = 0; 97377ba708819285931932ecd33691a672bb59d221aEli Friedman QualType ASTTy = D->getType(); 9741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9758f32f7189b12f67aa4a19bc7c3855b599980eca0Chris Lattner if (D->getInit() == 0) { 976cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman // This is a tentative definition; tentative definitions are 97703f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // implicitly initialized with { 0 }. 97803f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // 97903f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // Note that tentative definitions are only emitted at the end of 98003f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // a translation unit, so they should never have incomplete 98103f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // type. In addition, EmitTentativeDefinition makes sure that we 98203f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // never attempt to emit a tentative definition if a real one 98303f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // exists. A use may still exists, however, so we still may need 98403f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // to do a RAUW. 98503f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar assert(!ASTTy->isIncompleteType() && "Unexpected incomplete type"); 986b0d0ea042116c1f451d3db8ceff9f1dd92bc36d2Anders Carlsson Init = EmitNullConstant(D->getType()); 98777ba708819285931932ecd33691a672bb59d221aEli Friedman } else { 988e9352cc9818ba59e7cf88500ef048991c90f3821Anders Carlsson Init = EmitConstantExpr(D->getInit(), D->getType()); 9891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9906e656f45ae04b415ba7a4c0c25e55633e2d0ecd0Eli Friedman if (!Init) { 9916e656f45ae04b415ba7a4c0c25e55633e2d0ecd0Eli Friedman QualType T = D->getInit()->getType(); 99289ed31d3f9eeb8ec77c284a5cf404a74bf5e7acfAnders Carlsson if (getLangOptions().CPlusPlus) { 99389ed31d3f9eeb8ec77c284a5cf404a74bf5e7acfAnders Carlsson CXXGlobalInits.push_back(D); 99489ed31d3f9eeb8ec77c284a5cf404a74bf5e7acfAnders Carlsson Init = EmitNullConstant(T); 99589ed31d3f9eeb8ec77c284a5cf404a74bf5e7acfAnders Carlsson } else { 99689ed31d3f9eeb8ec77c284a5cf404a74bf5e7acfAnders Carlsson ErrorUnsupported(D, "static initializer"); 99789ed31d3f9eeb8ec77c284a5cf404a74bf5e7acfAnders Carlsson Init = llvm::UndefValue::get(getTypes().ConvertType(T)); 99889ed31d3f9eeb8ec77c284a5cf404a74bf5e7acfAnders Carlsson } 9996e656f45ae04b415ba7a4c0c25e55633e2d0ecd0Eli Friedman } 10008f32f7189b12f67aa4a19bc7c3855b599980eca0Chris Lattner } 10018e53e720b3d7c962e91138a130dbd5d6c2def0e5Devang Patel 10022d58406872e5af0c924623d9f7c194c4f09936d3Chris Lattner const llvm::Type* InitType = Init->getType(); 1003570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner llvm::Constant *Entry = GetAddrOfGlobalVar(D, InitType); 10041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1005570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // Strip off a bitcast if we got one back. 1006570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner if (llvm::ConstantExpr *CE = dyn_cast<llvm::ConstantExpr>(Entry)) { 10079d4a15fd3b85434c43ea27562793de63a793321aChris Lattner assert(CE->getOpcode() == llvm::Instruction::BitCast || 10089d4a15fd3b85434c43ea27562793de63a793321aChris Lattner // all zero index gep. 10099d4a15fd3b85434c43ea27562793de63a793321aChris Lattner CE->getOpcode() == llvm::Instruction::GetElementPtr); 1010570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner Entry = CE->getOperand(0); 1011570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner } 10121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1013570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // Entry is now either a Function or GlobalVariable. 1014570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner llvm::GlobalVariable *GV = dyn_cast<llvm::GlobalVariable>(Entry); 10151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1016570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // We have a definition after a declaration with the wrong type. 1017570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // We must make a new GlobalVariable* and update everything that used OldGV 1018570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // (a declaration or tentative definition) with the new GlobalVariable* 1019570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // (which will be a definition). 1020570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // 1021570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // This happens if there is a prototype for a global (e.g. 1022570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // "extern int x[];") and then a definition of a different type (e.g. 1023570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // "int x[10];"). This also happens when an initializer has a different type 1024570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // from the type of the global (this happens with unions). 1025570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner if (GV == 0 || 1026570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner GV->getType()->getElementType() != InitType || 1027570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner GV->getType()->getAddressSpace() != ASTTy.getAddressSpace()) { 10281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1029570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // Remove the old entry from GlobalDeclMap so that we'll create a new one. 1030570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner GlobalDeclMap.erase(getMangledName(D)); 1031232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar 1032570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // Make a new global with the correct type, this is now guaranteed to work. 1033570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner GV = cast<llvm::GlobalVariable>(GetAddrOfGlobalVar(D, InitType)); 10340558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner GV->takeName(cast<llvm::GlobalValue>(Entry)); 10350558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner 103677ba708819285931932ecd33691a672bb59d221aEli Friedman // Replace all uses of the old global with the new global 10371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Constant *NewPtrForOldDecl = 10383c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(GV, Entry->getType()); 1039570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner Entry->replaceAllUsesWith(NewPtrForOldDecl); 104077ba708819285931932ecd33691a672bb59d221aEli Friedman 104177ba708819285931932ecd33691a672bb59d221aEli Friedman // Erase the old global, since it is no longer used. 1042570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner cast<llvm::GlobalValue>(Entry)->eraseFromParent(); 104377ba708819285931932ecd33691a672bb59d221aEli Friedman } 104477ba708819285931932ecd33691a672bb59d221aEli Friedman 104540b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (const AnnotateAttr *AA = D->getAttr<AnnotateAttr>()) { 10468bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman SourceManager &SM = Context.getSourceManager(); 10478bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman AddAnnotation(EmitAnnotateAttr(GV, AA, 1048f7cf85b330bedd2877e1371fb0a83e99751ae162Chris Lattner SM.getInstantiationLineNumber(D->getLocation()))); 10498bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman } 10508bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman 105188a69ad80e1550e9932666e6efa050a5b1223889Chris Lattner GV->setInitializer(Init); 1052e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner 1053e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner // If it is safe to mark the global 'constant', do so now. 1054e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner GV->setConstant(false); 1055e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner if (D->getType().isConstant(Context)) { 1056e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner // FIXME: In C++, if the variable has a non-trivial ctor/dtor or any mutable 1057e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner // members, it cannot be declared "LLVM const". 1058e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner GV->setConstant(true); 1059e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner } 10601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10610de40af3a3aa14e3854c0eafeabd08f6762801f9Eli Friedman GV->setAlignment(getContext().getDeclAlignInBytes(D)); 106208d7802a406ee4a7cc18e8fce0c137b8c410ea7cEli Friedman 106388a69ad80e1550e9932666e6efa050a5b1223889Chris Lattner // Set the llvm linkage type as appropriate. 10641028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor GVALinkage Linkage = GetLinkageForVariable(getContext(), D); 1065a0f00a71fcb0f98298709d5e5318339acf7958acDouglas Gregor if (Linkage == GVA_Internal) 10668fabd78f1976243cb223fb3e969c6f317d1ae44dChris Lattner GV->setLinkage(llvm::Function::InternalLinkage); 106740b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis else if (D->hasAttr<DLLImportAttr>()) 1068ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner GV->setLinkage(llvm::Function::DLLImportLinkage); 106940b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis else if (D->hasAttr<DLLExportAttr>()) 1070ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner GV->setLinkage(llvm::Function::DLLExportLinkage); 1071e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner else if (D->hasAttr<WeakAttr>()) { 1072e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner if (GV->isConstant()) 1073e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner GV->setLinkage(llvm::GlobalVariable::WeakODRLinkage); 1074e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner else 1075e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner GV->setLinkage(llvm::GlobalVariable::WeakAnyLinkage); 10761028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor } else if (Linkage == GVA_TemplateInstantiation) 10771028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor GV->setLinkage(llvm::GlobalVariable::WeakAnyLinkage); 10781028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor else if (!CompileOpts.NoCommon && 1079309457d0f1b416c1b379c9f3e172848adffedb23Chris Lattner !D->hasExternalStorage() && !D->getInit() && 1080e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner !D->getAttr<SectionAttr>()) { 108104d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar GV->setLinkage(llvm::GlobalVariable::CommonLinkage); 1082e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner // common vars aren't constant even if declared const. 1083e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner GV->setConstant(false); 1084e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner } else 108504d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar GV->setLinkage(llvm::GlobalVariable::ExternalLinkage); 10867e714cd931fa3a90bfd728318a92485aa3e95748Daniel Dunbar 10877c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar SetCommonAttributes(D, GV); 108804d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar 1089686226b538e72c5059ab7c9a8f87eb883193b645Sanjiv Gupta // Emit global variable debug information. 10902d58406872e5af0c924623d9f7c194c4f09936d3Chris Lattner if (CGDebugInfo *DI = getDebugInfo()) { 109166031a5594bc9a7dc0dc5137c3e7955f835e4639Daniel Dunbar DI->setLocation(D->getLocation()); 1092686226b538e72c5059ab7c9a8f87eb883193b645Sanjiv Gupta DI->EmitGlobalVariable(GV, D); 1093686226b538e72c5059ab7c9a8f87eb883193b645Sanjiv Gupta } 109488a69ad80e1550e9932666e6efa050a5b1223889Chris Lattner} 10955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1096bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// ReplaceUsesOfNonProtoTypeWithRealFunction - This function is called when we 1097bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// implement a function with no prototype, e.g. "int foo() {}". If there are 1098bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// existing call uses of the old function in the module, this adjusts them to 1099bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// call the new function directly. 1100bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// 1101bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// This is not just a cleanup: the always_inline pass requires direct calls to 1102bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// functions to be able to inline them. If there is a bitcast in the way, it 1103bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// won't inline them. Instcombine normally deletes these calls, but it isn't 1104bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// run at -O0. 1105bdb0132722082886558f31eccdba06ae1852c0eeChris Lattnerstatic void ReplaceUsesOfNonProtoTypeWithRealFunction(llvm::GlobalValue *Old, 1106bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner llvm::Function *NewFn) { 1107bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // If we're redefining a global as a function, don't transform it. 1108bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner llvm::Function *OldFn = dyn_cast<llvm::Function>(Old); 1109bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner if (OldFn == 0) return; 11101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1111bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner const llvm::Type *NewRetTy = NewFn->getReturnType(); 1112bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner llvm::SmallVector<llvm::Value*, 4> ArgList; 1113bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner 1114bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner for (llvm::Value::use_iterator UI = OldFn->use_begin(), E = OldFn->use_end(); 1115bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner UI != E; ) { 1116bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // TODO: Do invokes ever occur in C code? If so, we should handle them too. 111708c93a7f2210b464e5abe298a5474b99414615f6Chris Lattner unsigned OpNo = UI.getOperandNo(); 1118bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner llvm::CallInst *CI = dyn_cast<llvm::CallInst>(*UI++); 111908c93a7f2210b464e5abe298a5474b99414615f6Chris Lattner if (!CI || OpNo != 0) continue; 11201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1121bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // If the return types don't match exactly, and if the call isn't dead, then 1122bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // we can't transform this call. 1123bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner if (CI->getType() != NewRetTy && !CI->use_empty()) 1124bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner continue; 1125bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner 1126bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // If the function was passed too few arguments, don't transform. If extra 1127bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // arguments were passed, we silently drop them. If any of the types 1128bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // mismatch, we don't transform. 1129bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner unsigned ArgNo = 0; 1130bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner bool DontTransform = false; 1131bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner for (llvm::Function::arg_iterator AI = NewFn->arg_begin(), 1132bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner E = NewFn->arg_end(); AI != E; ++AI, ++ArgNo) { 1133bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner if (CI->getNumOperands()-1 == ArgNo || 1134bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner CI->getOperand(ArgNo+1)->getType() != AI->getType()) { 1135bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner DontTransform = true; 1136bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner break; 1137bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner } 1138bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner } 1139bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner if (DontTransform) 1140bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner continue; 11411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1142bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // Okay, we can transform this. Create the new call instruction and copy 1143bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // over the required information. 1144bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner ArgList.append(CI->op_begin()+1, CI->op_begin()+1+ArgNo); 1145bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner llvm::CallInst *NewCall = llvm::CallInst::Create(NewFn, ArgList.begin(), 1146bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner ArgList.end(), "", CI); 1147bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner ArgList.clear(); 1148ffbb15e54a6dc120087003d1e42448b8705bd58aBenjamin Kramer if (!NewCall->getType()->isVoidTy()) 1149bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner NewCall->takeName(CI); 1150bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner NewCall->setAttributes(CI->getAttributes()); 1151ca6408c3176783f0b29da4679a08512aa05f0c73Daniel Dunbar NewCall->setCallingConv(CI->getCallingConv()); 1152bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner 1153bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // Finally, remove the old call, replacing any uses with the new one. 115400549fcec0490b2daf27543e532f94adbb186063Chris Lattner if (!CI->use_empty()) 115500549fcec0490b2daf27543e532f94adbb186063Chris Lattner CI->replaceAllUsesWith(NewCall); 11563b122bc5f1203615e2128e0c1a63da438865b1ccDevang Patel 1157aa40454a14837c573f323e29269cc0b53f495a13Devang Patel // Copy any custom metadata attached with CI. 1158aa40454a14837c573f323e29269cc0b53f495a13Devang Patel llvm::MetadataContext &TheMetadata = CI->getContext().getMetadata(); 1159aa40454a14837c573f323e29269cc0b53f495a13Devang Patel TheMetadata.copyMD(CI, NewCall); 1160aa40454a14837c573f323e29269cc0b53f495a13Devang Patel 1161bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner CI->eraseFromParent(); 1162bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner } 1163bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner} 1164bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner 1165bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 1166b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattnervoid CodeGenModule::EmitGlobalFunctionDefinition(GlobalDecl GD) { 11672b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson const llvm::FunctionType *Ty; 1168b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner const FunctionDecl *D = cast<FunctionDecl>(GD.getDecl()); 11691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11702b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(D)) { 1171183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall bool isVariadic = D->getType()->getAs<FunctionProtoType>()->isVariadic(); 11721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11732b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson Ty = getTypes().GetFunctionType(getTypes().getFunctionInfo(MD), isVariadic); 11742b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson } else { 11752b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson Ty = cast<llvm::FunctionType>(getTypes().ConvertType(D->getType())); 11761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11772b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson // As a special case, make sure that definitions of K&R function 11782b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson // "type foo()" aren't declared as varargs (which forces the backend 11792b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson // to do unnecessary work). 11802b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson if (D->getType()->isFunctionNoProtoType()) { 11812b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson assert(Ty->isVarArg() && "Didn't lower type as expected"); 11821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Due to stret, the lowered function could have arguments. 11831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Just create the same type as was lowered by ConvertType 11842b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson // but strip off the varargs bit. 11852b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson std::vector<const llvm::Type*> Args(Ty->param_begin(), Ty->param_end()); 118696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson Ty = llvm::FunctionType::get(Ty->getReturnType(), Args, false); 11872b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson } 1188ff75e1db95a53c7606e0bb114cf9adc59ab3d7f6Chris Lattner } 1189d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar 11909fa959d5bfbbb17d7c6ba71252219201fc8dc971Chris Lattner // Get or create the prototype for the function. 1191b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner llvm::Constant *Entry = GetAddrOfFunction(GD, Ty); 11921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11930558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner // Strip off a bitcast if we got one back. 11940558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner if (llvm::ConstantExpr *CE = dyn_cast<llvm::ConstantExpr>(Entry)) { 11950558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner assert(CE->getOpcode() == llvm::Instruction::BitCast); 11960558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner Entry = CE->getOperand(0); 11970558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner } 11981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12000558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner if (cast<llvm::GlobalValue>(Entry)->getType()->getElementType() != Ty) { 1201bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner llvm::GlobalValue *OldFn = cast<llvm::GlobalValue>(Entry); 12021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 120342745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar // If the types mismatch then we have to rewrite the definition. 1204bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner assert(OldFn->isDeclaration() && 12050558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner "Shouldn't replace non-declaration"); 120634809507232bc4c3c4840c7d092c7440219fddafChris Lattner 120762b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // F is the Function* for the one with the wrong type, we must make a new 120862b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // Function* and update everything that used F (a declaration) with the new 120962b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // Function* (which will be a definition). 121062b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // 121162b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // This happens if there is a prototype for a function 121262b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // (e.g. "int f()") and then a definition of a different type 121362b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // (e.g. "int f(int x)"). Start by making a new function of the 121462b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // correct type, RAUW, then steal the name. 121534809507232bc4c3c4840c7d092c7440219fddafChris Lattner GlobalDeclMap.erase(getMangledName(D)); 1216b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner llvm::Function *NewFn = cast<llvm::Function>(GetAddrOfFunction(GD, Ty)); 1217bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner NewFn->takeName(OldFn); 12181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1219bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // If this is an implementation of a function without a prototype, try to 1220bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // replace any existing uses of the function (which may be calls) with uses 1221bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // of the new function 12229fa959d5bfbbb17d7c6ba71252219201fc8dc971Chris Lattner if (D->getType()->isFunctionNoProtoType()) { 1223bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner ReplaceUsesOfNonProtoTypeWithRealFunction(OldFn, NewFn); 12249fa959d5bfbbb17d7c6ba71252219201fc8dc971Chris Lattner OldFn->removeDeadConstantUsers(); 12259fa959d5bfbbb17d7c6ba71252219201fc8dc971Chris Lattner } 12261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 122762b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // Replace uses of F with the Function we will endow with a body. 1228bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner if (!Entry->use_empty()) { 12291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Constant *NewPtrForOldDecl = 12303c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(NewFn, Entry->getType()); 1231bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner Entry->replaceAllUsesWith(NewPtrForOldDecl); 1232bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner } 12331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 123462b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // Ok, delete the old function now, which is dead. 1235bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner OldFn->eraseFromParent(); 12361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12370558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner Entry = NewFn; 1238bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } 12391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12400558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner llvm::Function *Fn = cast<llvm::Function>(Entry); 1241bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 1242219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar CodeGenFunction(*this).GenerateCode(D, Fn); 12436379a7a15335e0af543a942efe9cfd514a83dab8Daniel Dunbar 12447c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar SetFunctionDefinitionAttributes(D, Fn); 12457c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar SetLLVMFunctionAttributesForDefinition(D, Fn); 12461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 124740b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (const ConstructorAttr *CA = D->getAttr<ConstructorAttr>()) 1248219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar AddGlobalCtor(Fn, CA->getPriority()); 124940b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (const DestructorAttr *DA = D->getAttr<DestructorAttr>()) 1250219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar AddGlobalDtor(Fn, DA->getPriority()); 1251bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar} 1252bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 1253bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattnervoid CodeGenModule::EmitAliasDefinition(const ValueDecl *D) { 125440b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis const AliasAttr *AA = D->getAttr<AliasAttr>(); 1255bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner assert(AA && "Not an alias?"); 1256bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 1257bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner const llvm::Type *DeclTy = getTypes().ConvertTypeForMem(D->getType()); 12581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1259bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // Unique the name through the identifier table. 1260bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner const char *AliaseeName = AA->getAliasee().c_str(); 1261e013d685c6689ac7ae103ee88acf573422d1ed6aDaniel Dunbar AliaseeName = getContext().Idents.get(AliaseeName).getNameStart(); 1262bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 1263bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // Create a reference to the named value. This ensures that it is emitted 1264bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // if a deferred decl. 1265bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner llvm::Constant *Aliasee; 1266bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner if (isa<llvm::FunctionType>(DeclTy)) 1267b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner Aliasee = GetOrCreateLLVMFunction(AliaseeName, DeclTy, GlobalDecl()); 1268bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner else 1269bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner Aliasee = GetOrCreateLLVMGlobal(AliaseeName, 127096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(DeclTy), 0); 1271bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 1272bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // Create the new alias itself, but don't set a name yet. 12731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalValue *GA = 1274bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner new llvm::GlobalAlias(Aliasee->getType(), 1275bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner llvm::Function::ExternalLinkage, 1276bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner "", Aliasee, &getModule()); 12771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1278bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // See if there is already something with the alias' name in the module. 1279bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner const char *MangledName = getMangledName(D); 1280bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner llvm::GlobalValue *&Entry = GlobalDeclMap[MangledName]; 12811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1282bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner if (Entry && !Entry->isDeclaration()) { 1283bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // If there is a definition in the module, then it wins over the alias. 1284bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // This is dubious, but allow it to be safe. Just ignore the alias. 1285bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner GA->eraseFromParent(); 1286bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner return; 1287bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner } 12881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1289bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner if (Entry) { 1290bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // If there is a declaration in the module, then we had an extern followed 1291bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // by the alias, as in: 1292bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // extern int test6(); 1293bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // ... 1294bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // int test6() __attribute__((alias("test7"))); 1295bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // 1296bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // Remove it and replace uses of it with the alias. 12971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12983c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Entry->replaceAllUsesWith(llvm::ConstantExpr::getBitCast(GA, 1299bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner Entry->getType())); 1300bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner Entry->eraseFromParent(); 1301bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner } 13021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1303bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // Now we know that there is no conflict, set the name. 1304bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner Entry = GA; 1305bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner GA->setName(MangledName); 1306bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 13077c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // Set attributes which are particular to an alias; this is a 13087c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // specialization of the attributes which may be set on a global 13097c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // variable/function. 131040b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (D->hasAttr<DLLExportAttr>()) { 13117c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 13127c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // The dllexport attribute is ignored for undefined symbols. 13136fb0aee4f9dc261bbec72e1283ad8dc0557a6d96Argyrios Kyrtzidis if (FD->getBody()) 13147c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar GA->setLinkage(llvm::Function::DLLExportLinkage); 13157c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar } else { 13167c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar GA->setLinkage(llvm::Function::DLLExportLinkage); 13177c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar } 13181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } else if (D->hasAttr<WeakAttr>() || 131940b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis D->hasAttr<WeakImportAttr>()) { 13207c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar GA->setLinkage(llvm::Function::WeakAnyLinkage); 13217c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar } 13227c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 13237c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar SetCommonAttributes(D, GA); 1324bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner} 1325bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 1326b808c952bbff821dce727dd801a1098d64394f98Chris Lattner/// getBuiltinLibFunction - Given a builtin id for a function like 1327b808c952bbff821dce727dd801a1098d64394f98Chris Lattner/// "__builtin_fabsf", return a Function* for "fabsf". 132834771b594ca8cdf8cd2e40b27170efa4ed2833c5Daniel Dunbarllvm::Value *CodeGenModule::getBuiltinLibFunction(const FunctionDecl *FD, 132934771b594ca8cdf8cd2e40b27170efa4ed2833c5Daniel Dunbar unsigned BuiltinID) { 13303e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor assert((Context.BuiltinInfo.isLibFunction(BuiltinID) || 13311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Context.BuiltinInfo.isPredefinedLibFunction(BuiltinID)) && 13323e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor "isn't a lib fn"); 13331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13343e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor // Get the name, skip over the __builtin_ prefix (if necessary). 13353e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor const char *Name = Context.BuiltinInfo.GetName(BuiltinID); 13363e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor if (Context.BuiltinInfo.isLibFunction(BuiltinID)) 13373e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor Name += 10; 13381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1339bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner // Get the type for the builtin. 134086df27bbdbb98c39ec2184695c0561209f91beddChris Lattner ASTContext::GetBuiltinTypeError Error; 134186df27bbdbb98c39ec2184695c0561209f91beddChris Lattner QualType Type = Context.GetBuiltinType(BuiltinID, Error); 134286df27bbdbb98c39ec2184695c0561209f91beddChris Lattner assert(Error == ASTContext::GE_None && "Can't get builtin type"); 1343370ab3f1373841d70582feac9e35c3c6b3489f63Douglas Gregor 13441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::FunctionType *Ty = 1345bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner cast<llvm::FunctionType>(getTypes().ConvertType(Type)); 1346bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 1347b808c952bbff821dce727dd801a1098d64394f98Chris Lattner // Unique the name through the identifier table. 1348e013d685c6689ac7ae103ee88acf573422d1ed6aDaniel Dunbar Name = getContext().Idents.get(Name).getNameStart(); 134934771b594ca8cdf8cd2e40b27170efa4ed2833c5Daniel Dunbar return GetOrCreateLLVMFunction(Name, Ty, GlobalDecl(FD)); 1350bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner} 1351bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 13527acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattnerllvm::Function *CodeGenModule::getIntrinsic(unsigned IID,const llvm::Type **Tys, 13537acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattner unsigned NumTys) { 13547acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattner return llvm::Intrinsic::getDeclaration(&getModule(), 13557acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattner (llvm::Intrinsic::ID)IID, Tys, NumTys); 13567acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattner} 1357bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 13585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerllvm::Function *CodeGenModule::getMemCpyFn() { 13595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (MemCpyFn) return MemCpyFn; 13600032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson const llvm::Type *IntPtr = TheTargetData.getIntPtrType(VMContext); 13614e8a9e8640a6717120394ee2ee5f27989757754dChris Lattner return MemCpyFn = getIntrinsic(llvm::Intrinsic::memcpy, &IntPtr, 1); 13625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1363c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 13640c99509927a0c7a48490486b9fec287b63e5c09cEli Friedmanllvm::Function *CodeGenModule::getMemMoveFn() { 13650c99509927a0c7a48490486b9fec287b63e5c09cEli Friedman if (MemMoveFn) return MemMoveFn; 13660032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson const llvm::Type *IntPtr = TheTargetData.getIntPtrType(VMContext); 13674e8a9e8640a6717120394ee2ee5f27989757754dChris Lattner return MemMoveFn = getIntrinsic(llvm::Intrinsic::memmove, &IntPtr, 1); 13680c99509927a0c7a48490486b9fec287b63e5c09cEli Friedman} 13690c99509927a0c7a48490486b9fec287b63e5c09cEli Friedman 137041ef30e869d3f4940437503eb6a2cf70819fdb08Lauro Ramos Venanciollvm::Function *CodeGenModule::getMemSetFn() { 137141ef30e869d3f4940437503eb6a2cf70819fdb08Lauro Ramos Venancio if (MemSetFn) return MemSetFn; 13720032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson const llvm::Type *IntPtr = TheTargetData.getIntPtrType(VMContext); 13734e8a9e8640a6717120394ee2ee5f27989757754dChris Lattner return MemSetFn = getIntrinsic(llvm::Intrinsic::memset, &IntPtr, 1); 137441ef30e869d3f4940437503eb6a2cf70819fdb08Lauro Ramos Venancio} 13757acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattner 13761d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbarstatic llvm::StringMapEntry<llvm::Constant*> & 13771d5529132e4620562cab931c1f84c24e42f02741Daniel DunbarGetConstantCFStringEntry(llvm::StringMap<llvm::Constant*> &Map, 13781d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar const StringLiteral *Literal, 137970ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar bool TargetIsLSB, 13801d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar bool &IsUTF16, 13811d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar unsigned &StringLength) { 1382df4eee9b035cc4b95b1ea72635e7429d06b0ecc8Daniel Dunbar unsigned NumBytes = Literal->getByteLength(); 13831d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar 1384f015b034159d40e7033309e50036804eb1971787Daniel Dunbar // Check for simple case. 1385f015b034159d40e7033309e50036804eb1971787Daniel Dunbar if (!Literal->containsNonAsciiOrNull()) { 1386f015b034159d40e7033309e50036804eb1971787Daniel Dunbar StringLength = NumBytes; 1387f015b034159d40e7033309e50036804eb1971787Daniel Dunbar return Map.GetOrCreateValue(llvm::StringRef(Literal->getStrData(), 1388f015b034159d40e7033309e50036804eb1971787Daniel Dunbar StringLength)); 1389f015b034159d40e7033309e50036804eb1971787Daniel Dunbar } 1390f015b034159d40e7033309e50036804eb1971787Daniel Dunbar 13911d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar // Otherwise, convert the UTF8 literals into a byte string. 13921d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar llvm::SmallVector<UTF16, 128> ToBuf(NumBytes); 13931d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar const UTF8 *FromPtr = (UTF8 *)Literal->getStrData(); 13941d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar UTF16 *ToPtr = &ToBuf[0]; 13951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ConversionResult Result = ConvertUTF8toUTF16(&FromPtr, FromPtr + NumBytes, 13971d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar &ToPtr, ToPtr + NumBytes, 13981d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar strictConversion); 13991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14001d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar // Check for conversion failure. 14011d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar if (Result != conversionOK) { 14021d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar // FIXME: Have Sema::CheckObjCString() validate the UTF-8 string and remove 14031d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar // this duplicate code. 14041d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar assert(Result == sourceIllegal && "UTF-8 to UTF-16 conversion failed"); 1405f015b034159d40e7033309e50036804eb1971787Daniel Dunbar StringLength = NumBytes; 1406f015b034159d40e7033309e50036804eb1971787Daniel Dunbar return Map.GetOrCreateValue(llvm::StringRef(Literal->getStrData(), 1407f015b034159d40e7033309e50036804eb1971787Daniel Dunbar StringLength)); 1408e9b7d8ace8674585818990cff585daae7745bd88Steve Naroff } 14091d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar 141070ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar // ConvertUTF8toUTF16 returns the length in ToPtr. 14111d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar StringLength = ToPtr - &ToBuf[0]; 141270ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar 141370ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar // Render the UTF-16 string into a byte array and convert to the target byte 141470ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar // order. 141570ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar // 141670ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar // FIXME: This isn't something we should need to do here. 141770ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar llvm::SmallString<128> AsBytes; 141870ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar AsBytes.reserve(StringLength * 2); 141970ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar for (unsigned i = 0; i != StringLength; ++i) { 142070ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar unsigned short Val = ToBuf[i]; 142170ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar if (TargetIsLSB) { 142270ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar AsBytes.push_back(Val & 0xFF); 142370ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar AsBytes.push_back(Val >> 8); 142470ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar } else { 142570ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar AsBytes.push_back(Val >> 8); 142670ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar AsBytes.push_back(Val & 0xFF); 142770ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar } 142870ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar } 1429434da48d0e35764f18b3fc96c75504746050b046Daniel Dunbar // Append one extra null character, the second is automatically added by our 1430434da48d0e35764f18b3fc96c75504746050b046Daniel Dunbar // caller. 1431434da48d0e35764f18b3fc96c75504746050b046Daniel Dunbar AsBytes.push_back(0); 143270ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar 14331d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar IsUTF16 = true; 143470ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar return Map.GetOrCreateValue(llvm::StringRef(AsBytes.data(), AsBytes.size())); 14351d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar} 14361d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar 14371d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbarllvm::Constant * 14381d5529132e4620562cab931c1f84c24e42f02741Daniel DunbarCodeGenModule::GetAddrOfConstantCFString(const StringLiteral *Literal) { 14391d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar unsigned StringLength = 0; 14401d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar bool isUTF16 = false; 14411d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar llvm::StringMapEntry<llvm::Constant*> &Entry = 14421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump GetConstantCFStringEntry(CFConstantStringMap, Literal, 144370ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar getTargetData().isLittleEndian(), 144470ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar isUTF16, StringLength); 14451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14461d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar if (llvm::Constant *C = Entry.getValue()) 14471d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar return C; 14481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14490032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Constant *Zero = 14500032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Constant::getNullValue(llvm::Type::getInt32Ty(VMContext)); 14513e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar llvm::Constant *Zeros[] = { Zero, Zero }; 14521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14539d4a15fd3b85434c43ea27562793de63a793321aChris Lattner // If we don't already have it, get __CFConstantStringClassReference. 1454c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson if (!CFConstantStringClassRef) { 1455c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson const llvm::Type *Ty = getTypes().ConvertType(getContext().IntTy); 145696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson Ty = llvm::ArrayType::get(Ty, 0); 14571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Constant *GV = CreateRuntimeVariable(Ty, 14589d4a15fd3b85434c43ea27562793de63a793321aChris Lattner "__CFConstantStringClassReference"); 14593e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar // Decay array -> ptr 14603e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar CFConstantStringClassRef = 14613c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getGetElementPtr(GV, Zeros, 2); 1462c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson } 14631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1464e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson QualType CFTy = getContext().getCFConstantStringType(); 14653e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar 14661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::StructType *STy = 1467e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson cast<llvm::StructType>(getTypes().ConvertType(CFTy)); 1468e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson 14695add6835b0c6b0f67e19fd5366825d3e41eb0dcfAnders Carlsson std::vector<llvm::Constant*> Fields(4); 147044b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 1471c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // Class pointer. 14725add6835b0c6b0f67e19fd5366825d3e41eb0dcfAnders Carlsson Fields[0] = CFConstantStringClassRef; 14731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1474c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // Flags. 14753e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar const llvm::Type *Ty = getTypes().ConvertType(getContext().UnsignedIntTy); 14761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Fields[1] = isUTF16 ? llvm::ConstantInt::get(Ty, 0x07d0) : 14775add6835b0c6b0f67e19fd5366825d3e41eb0dcfAnders Carlsson llvm::ConstantInt::get(Ty, 0x07C8); 14785add6835b0c6b0f67e19fd5366825d3e41eb0dcfAnders Carlsson 1479c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // String pointer. 14800032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Constant *C = llvm::ConstantArray::get(VMContext, Entry.getKey().str()); 1481a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar 1482278b9f06933c385ffbccc15f8491787470cb4a1bChris Lattner const char *Sect = 0; 148395b851e55c328af4b69da7bfc1124bf258c0ffe5Chris Lattner llvm::GlobalValue::LinkageTypes Linkage; 1484278b9f06933c385ffbccc15f8491787470cb4a1bChris Lattner bool isConstant; 1485a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar if (isUTF16) { 1486a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar Sect = getContext().Target.getUnicodeStringSection(); 1487278b9f06933c385ffbccc15f8491787470cb4a1bChris Lattner // FIXME: why do utf strings get "_" labels instead of "L" labels? 148895b851e55c328af4b69da7bfc1124bf258c0ffe5Chris Lattner Linkage = llvm::GlobalValue::InternalLinkage; 1489278b9f06933c385ffbccc15f8491787470cb4a1bChris Lattner // Note: -fwritable-strings doesn't make unicode CFStrings writable, but 1490278b9f06933c385ffbccc15f8491787470cb4a1bChris Lattner // does make plain ascii ones writable. 1491278b9f06933c385ffbccc15f8491787470cb4a1bChris Lattner isConstant = true; 1492a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar } else { 149395b851e55c328af4b69da7bfc1124bf258c0ffe5Chris Lattner Linkage = llvm::GlobalValue::PrivateLinkage; 1494278b9f06933c385ffbccc15f8491787470cb4a1bChris Lattner isConstant = !Features.WritableStrings; 1495a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar } 1496278b9f06933c385ffbccc15f8491787470cb4a1bChris Lattner 14971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalVariable *GV = 1498278b9f06933c385ffbccc15f8491787470cb4a1bChris Lattner new llvm::GlobalVariable(getModule(), C->getType(), isConstant, Linkage, C, 1499278b9f06933c385ffbccc15f8491787470cb4a1bChris Lattner ".str"); 1500a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar if (Sect) 15018e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar GV->setSection(Sect); 1502a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar if (isUTF16) { 1503a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar unsigned Align = getContext().getTypeAlign(getContext().ShortTy)/8; 15041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump GV->setAlignment(Align); 1505a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar } 15065add6835b0c6b0f67e19fd5366825d3e41eb0dcfAnders Carlsson Fields[2] = llvm::ConstantExpr::getGetElementPtr(GV, Zeros, 2); 15075add6835b0c6b0f67e19fd5366825d3e41eb0dcfAnders Carlsson 1508c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // String length. 1509c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson Ty = getTypes().ConvertType(getContext().LongTy); 15105add6835b0c6b0f67e19fd5366825d3e41eb0dcfAnders Carlsson Fields[3] = llvm::ConstantInt::get(Ty, StringLength); 15111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1512c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // The struct. 151308e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson C = llvm::ConstantStruct::get(STy, Fields); 15141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump GV = new llvm::GlobalVariable(getModule(), C->getType(), true, 15151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalVariable::PrivateLinkage, C, 151695b851e55c328af4b69da7bfc1124bf258c0ffe5Chris Lattner "_unnamed_cfstring_"); 15178e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar if (const char *Sect = getContext().Target.getCFStringSection()) 15188e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar GV->setSection(Sect); 15191d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar Entry.setValue(GV); 15201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15210c67829763b98bc670062b553897a851fab17401Anders Carlsson return GV; 1522c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson} 152345e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 15246143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// GetStringForStringLiteral - Return the appropriate bytes for a 15251e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar/// string literal, properly padded to match the literal type. 15266143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbarstd::string CodeGenModule::GetStringForStringLiteral(const StringLiteral *E) { 15271e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar const char *StrData = E->getStrData(); 15281e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar unsigned Len = E->getByteLength(); 15291e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar 15301e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar const ConstantArrayType *CAT = 15311e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar getContext().getAsConstantArrayType(E->getType()); 15321e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar assert(CAT && "String isn't pointer or array!"); 15331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1534dbb1ecc32ca122b07b7c98fd0a8f6f53985adaccChris Lattner // Resize the string to the right size. 15351e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar std::string Str(StrData, StrData+Len); 15361e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar uint64_t RealLen = CAT->getSize().getZExtValue(); 15371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1538dbb1ecc32ca122b07b7c98fd0a8f6f53985adaccChris Lattner if (E->isWide()) 1539dbb1ecc32ca122b07b7c98fd0a8f6f53985adaccChris Lattner RealLen *= getContext().Target.getWCharWidth()/8; 15401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15411e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar Str.resize(RealLen, '\0'); 15421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15431e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar return Str; 15441e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar} 15451e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar 15466143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// GetAddrOfConstantStringFromLiteral - Return a pointer to a 15476143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// constant array for the given string literal. 15486143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbarllvm::Constant * 15496143293fa4366ee95d7e47e61bd030a34bf68b55Daniel DunbarCodeGenModule::GetAddrOfConstantStringFromLiteral(const StringLiteral *S) { 15506143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar // FIXME: This can be more efficient. 15516143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar return GetAddrOfConstantString(GetStringForStringLiteral(S)); 15526143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar} 15536143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar 1554eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner/// GetAddrOfConstantStringFromObjCEncode - Return a pointer to a constant 1555eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner/// array for the given ObjCEncodeExpr node. 1556eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattnerllvm::Constant * 1557eaf2bb89eb2aad3b80673de30febe52df43c10ecChris LattnerCodeGenModule::GetAddrOfConstantStringFromObjCEncode(const ObjCEncodeExpr *E) { 1558eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner std::string Str; 1559eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner getContext().getObjCEncodingForType(E->getEncodedType(), Str); 1560a210f350fa78c263caa26e0f999cce85bb235309Eli Friedman 1561a210f350fa78c263caa26e0f999cce85bb235309Eli Friedman return GetAddrOfConstantCString(Str); 1562eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner} 1563eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner 1564eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner 1565a7ad98ff0919d6a24ea7c46634ea29bea551c1a0Chris Lattner/// GenerateWritableString -- Creates storage for a string literal. 15661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpstatic llvm::Constant *GenerateStringLiteral(const std::string &str, 156745e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner bool constant, 15685fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar CodeGenModule &CGM, 15695fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar const char *GlobalName) { 15706143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar // Create Constant for this string literal. Don't add a '\0'. 15710032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Constant *C = 15720032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::ConstantArray::get(CGM.getLLVMContext(), str, false); 15731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 157445e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner // Create a global variable for this string 15751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return new llvm::GlobalVariable(CGM.getModule(), C->getType(), constant, 157695b851e55c328af4b69da7bfc1124bf258c0ffe5Chris Lattner llvm::GlobalValue::PrivateLinkage, 15771c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson C, GlobalName); 157845e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner} 157945e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 15806143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// GetAddrOfConstantString - Returns a pointer to a character array 15816143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// containing the literal. This contents are exactly that of the 15826143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// given string, i.e. it will not be null terminated automatically; 15836143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// see GetAddrOfConstantCString. Note that whether the result is 15846143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// actually a pointer to an LLVM constant depends on 15856143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// Feature.WriteableStrings. 15866143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// 15876143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// The result has pointer to array type. 15885fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbarllvm::Constant *CodeGenModule::GetAddrOfConstantString(const std::string &str, 15895fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar const char *GlobalName) { 15908e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar bool IsConstant = !Features.WritableStrings; 15918e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar 15928e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar // Get the default prefix if a name wasn't specified. 15938e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar if (!GlobalName) 159495b851e55c328af4b69da7bfc1124bf258c0ffe5Chris Lattner GlobalName = ".str"; 15958e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar 15968e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar // Don't share any string literals if strings aren't constant. 15978e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar if (!IsConstant) 15985fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar return GenerateStringLiteral(str, false, *this, GlobalName); 15991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::StringMapEntry<llvm::Constant *> &Entry = 160195b851e55c328af4b69da7bfc1124bf258c0ffe5Chris Lattner ConstantStringMap.GetOrCreateValue(&str[0], &str[str.length()]); 160245e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 160345e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner if (Entry.getValue()) 1604eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner return Entry.getValue(); 160545e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 160645e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner // Create a global variable for this. 16075fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar llvm::Constant *C = GenerateStringLiteral(str, true, *this, GlobalName); 160845e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner Entry.setValue(C); 160945e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner return C; 161045e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner} 16116143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar 16126143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// GetAddrOfConstantCString - Returns a pointer to a character 16136143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// array containing the literal and a terminating '\-' 16146143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// character. The result has pointer to array type. 16155fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbarllvm::Constant *CodeGenModule::GetAddrOfConstantCString(const std::string &str, 16165fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar const char *GlobalName){ 1617c9f29c61856ffb5f643cedbe87ac076f21a1381aChris Lattner return GetAddrOfConstantString(str + '\0', GlobalName); 16186143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar} 161941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 1620af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar/// EmitObjCPropertyImplementations - Emit information for synthesized 1621af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar/// properties for an implementation. 16221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpvoid CodeGenModule::EmitObjCPropertyImplementations(const 1623af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCImplementationDecl *D) { 16241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCImplementationDecl::propimpl_iterator 162517945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis i = D->propimpl_begin(), e = D->propimpl_end(); i != e; ++i) { 1626af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCPropertyImplDecl *PID = *i; 16271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1628af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // Dynamic is just for type-checking. 1629af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize) { 1630af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCPropertyDecl *PD = PID->getPropertyDecl(); 1631af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 1632af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // Determine which methods need to be implemented, some may have 1633af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // been overridden. Note that ::isSynthesized is not the method 1634af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // we want, that just indicates if the decl came from a 1635af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // property. What we want to know is if the method is defined in 1636af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // this implementation. 163717945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis if (!D->getInstanceMethod(PD->getGetterName())) 1638fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian CodeGenFunction(*this).GenerateObjCGetter( 1639fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian const_cast<ObjCImplementationDecl *>(D), PID); 1640af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar if (!PD->isReadOnly() && 164117945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis !D->getInstanceMethod(PD->getSetterName())) 1642fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian CodeGenFunction(*this).GenerateObjCSetter( 1643fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian const_cast<ObjCImplementationDecl *>(D), PID); 1644af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar } 1645af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar } 1646af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar} 1647af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 164891e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson/// EmitNamespace - Emit all declarations in a namespace. 1649984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlssonvoid CodeGenModule::EmitNamespace(const NamespaceDecl *ND) { 165017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (RecordDecl::decl_iterator I = ND->decls_begin(), E = ND->decls_end(); 1651984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlsson I != E; ++I) 1652984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlsson EmitTopLevelDecl(*I); 1653984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlsson} 1654984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlsson 165591e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson// EmitLinkageSpec - Emit all declarations in a linkage spec. 165691e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlssonvoid CodeGenModule::EmitLinkageSpec(const LinkageSpecDecl *LSD) { 1657f976be8a63f9e0d3bd50e33dadef02c3c9921747Eli Friedman if (LSD->getLanguage() != LinkageSpecDecl::lang_c && 1658f976be8a63f9e0d3bd50e33dadef02c3c9921747Eli Friedman LSD->getLanguage() != LinkageSpecDecl::lang_cxx) { 165991e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson ErrorUnsupported(LSD, "linkage spec"); 166091e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson return; 166191e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson } 166291e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson 166317945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (RecordDecl::decl_iterator I = LSD->decls_begin(), E = LSD->decls_end(); 166491e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson I != E; ++I) 166591e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson EmitTopLevelDecl(*I); 166691e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson} 166791e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson 166841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar/// EmitTopLevelDecl - Emit code for a single top level declaration. 166941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbarvoid CodeGenModule::EmitTopLevelDecl(Decl *D) { 167041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // If an error has occurred, stop code generation, but continue 167141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // parsing and semantic analysis (to ensure all warnings and errors 167241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // are emitted). 167341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar if (Diags.hasErrorOccurred()) 167441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar return; 167541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 167616e8be2ac532358d4e413fdfa2643b1876edda78Douglas Gregor // Ignore dependent declarations. 167716e8be2ac532358d4e413fdfa2643b1876edda78Douglas Gregor if (D->getDeclContext() && D->getDeclContext()->isDependentContext()) 167816e8be2ac532358d4e413fdfa2643b1876edda78Douglas Gregor return; 16791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 168041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar switch (D->getKind()) { 1681293361afd4199c92aabff9267fddea890943c586Anders Carlsson case Decl::CXXConversion: 16822b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson case Decl::CXXMethod: 168341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::Function: 168416e8be2ac532358d4e413fdfa2643b1876edda78Douglas Gregor // Skip function templates 168516e8be2ac532358d4e413fdfa2643b1876edda78Douglas Gregor if (cast<FunctionDecl>(D)->getDescribedFunctionTemplate()) 168616e8be2ac532358d4e413fdfa2643b1876edda78Douglas Gregor return; 16871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1688555b4bb2749aea2ec8e2adc351a71ec1cb9bdc33Anders Carlsson EmitGlobal(cast<FunctionDecl>(D)); 1689555b4bb2749aea2ec8e2adc351a71ec1cb9bdc33Anders Carlsson break; 1690555b4bb2749aea2ec8e2adc351a71ec1cb9bdc33Anders Carlsson 169141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::Var: 1692555b4bb2749aea2ec8e2adc351a71ec1cb9bdc33Anders Carlsson EmitGlobal(cast<VarDecl>(D)); 169341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 169441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 169595d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson // C++ Decls 169641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::Namespace: 1697984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlsson EmitNamespace(cast<NamespaceDecl>(D)); 169841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 16999cfbe48a7a20a217fdb2920b29b67ae7941cb116Douglas Gregor // No code generation needed. 17009cfbe48a7a20a217fdb2920b29b67ae7941cb116Douglas Gregor case Decl::Using: 1701dd9967a6374c9a44be4af02aaeee340ffb82848fDouglas Gregor case Decl::UsingDirective: 1702127102b5196ffe04bdb70fd553fe62c265ab10a9Douglas Gregor case Decl::ClassTemplate: 1703127102b5196ffe04bdb70fd553fe62c265ab10a9Douglas Gregor case Decl::FunctionTemplate: 1704018837b081bd1a725bae1c020eb1649975b04d67Anders Carlsson case Decl::NamespaceAlias: 17059cfbe48a7a20a217fdb2920b29b67ae7941cb116Douglas Gregor break; 170695d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson case Decl::CXXConstructor: 170795d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson EmitCXXConstructors(cast<CXXConstructorDecl>(D)); 170895d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson break; 170927ae53665f8b00fe4ba21da0fa79a4ce6e0b6cd5Anders Carlsson case Decl::CXXDestructor: 171027ae53665f8b00fe4ba21da0fa79a4ce6e0b6cd5Anders Carlsson EmitCXXDestructors(cast<CXXDestructorDecl>(D)); 171127ae53665f8b00fe4ba21da0fa79a4ce6e0b6cd5Anders Carlsson break; 171236674d2978eb53962218ac67bb4d352cc287ea05Anders Carlsson 171336674d2978eb53962218ac67bb4d352cc287ea05Anders Carlsson case Decl::StaticAssert: 171436674d2978eb53962218ac67bb4d352cc287ea05Anders Carlsson // Nothing to do. 171536674d2978eb53962218ac67bb4d352cc287ea05Anders Carlsson break; 171636674d2978eb53962218ac67bb4d352cc287ea05Anders Carlsson 171795d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson // Objective-C Decls 17181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 171938e24c782c17b6058bf61d635747bbde19fb1bc7Fariborz Jahanian // Forward declarations, no (immediate) code generation. 172041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCClass: 172141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCForwardProtocol: 1722b31cb7f1752ea011fd06ac9574ce24667d11cbdbFariborz Jahanian case Decl::ObjCCategory: 1723b31cb7f1752ea011fd06ac9574ce24667d11cbdbFariborz Jahanian case Decl::ObjCInterface: 172441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 1725285d0dba947b7c9960eaa88e8c4fced0398d4319Chris Lattner 172641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCProtocol: 1727b31cb7f1752ea011fd06ac9574ce24667d11cbdbFariborz Jahanian Runtime->GenerateProtocol(cast<ObjCProtocolDecl>(D)); 172841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 172941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 173041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCCategoryImpl: 1731af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // Categories have properties but don't support synthesize so we 1732af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // can ignore them here. 173341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar Runtime->GenerateCategory(cast<ObjCCategoryImplDecl>(D)); 173441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 173541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 1736af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar case Decl::ObjCImplementation: { 1737af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCImplementationDecl *OMD = cast<ObjCImplementationDecl>(D); 1738af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar EmitObjCPropertyImplementations(OMD); 1739af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar Runtime->GenerateClass(OMD); 174041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 17411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 174241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCMethod: { 174341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar ObjCMethodDecl *OMD = cast<ObjCMethodDecl>(D); 174441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // If this is not a prototype, emit the body. 17456fb0aee4f9dc261bbec72e1283ad8dc0557a6d96Argyrios Kyrtzidis if (OMD->getBody()) 174641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar CodeGenFunction(*this).GenerateObjCMethod(OMD); 174741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 174841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar } 17491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump case Decl::ObjCCompatibleAlias: 1750305c658ebce84bb9833fc0e7675554656453b8e8Fariborz Jahanian // compatibility-alias is a directive and has no code gen. 175141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 175241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 175391e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson case Decl::LinkageSpec: 175491e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson EmitLinkageSpec(cast<LinkageSpecDecl>(D)); 175541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 175641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 175741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::FileScopeAsm: { 175841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar FileScopeAsmDecl *AD = cast<FileScopeAsmDecl>(D); 175941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar std::string AsmString(AD->getAsmString()->getStrData(), 176041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar AD->getAsmString()->getByteLength()); 17611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 176241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar const std::string &S = getModule().getModuleInlineAsm(); 176341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar if (S.empty()) 176441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar getModule().setModuleInlineAsm(AsmString); 176541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar else 176641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar getModule().setModuleInlineAsm(S + '\n' + AsmString); 176741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 176841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar } 17691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump default: 1771f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump // Make sure we handled everything we should, every other kind is a 1772f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump // non-top-level decl. FIXME: Would be nice to have an isTopLevelDeclKind 1773f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump // function. Need to recode Decl::Kind to do that easily. 177441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar assert(isa<TypeDecl>(D) && "Unsupported decl kind"); 177541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar } 177641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar} 1777