CodeGenModule.cpp revision e013d685c6689ac7ae103ee88acf573422d1ed6a
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. 265f5cecfbdcd20be224861f9e67c5973a9a2b61512Argyrios Kyrtzidis if (MD->isInline() || !MD->isOutOfLine()) 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 275005eedce54da6580de37bb115bf581008637e4b1Chris Lattner if (!FD->isInline()) 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 6042a131fbca2a51085dc083b8c56a2d4ced3cf1413Anders Carlsson if (const CXXConstructorDecl *CD = dyn_cast<CXXConstructorDecl>(D)) 6052a131fbca2a51085dc083b8c56a2d4ced3cf1413Anders Carlsson EmitCXXConstructor(CD, GD.getCtorType()); 6067267c1693abe7875b0c57268be05005ae013c6c9Anders Carlsson else if (const CXXDestructorDecl *DD = dyn_cast<CXXDestructorDecl>(D)) 6077267c1693abe7875b0c57268be05005ae013c6c9Anders Carlsson EmitCXXDestructor(DD, GD.getDtorType()); 608b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner else if (isa<FunctionDecl>(D)) 609b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner EmitGlobalFunctionDefinition(GD); 6102a131fbca2a51085dc083b8c56a2d4ced3cf1413Anders Carlsson else if (const VarDecl *VD = dyn_cast<VarDecl>(D)) 611bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar EmitGlobalVarDefinition(VD); 6122a131fbca2a51085dc083b8c56a2d4ced3cf1413Anders Carlsson else { 613bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar assert(0 && "Invalid argument to EmitGlobalDefinition()"); 614bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } 615bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar} 616bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 61774391b48b4791cded373683a3baf67314f358d50Chris Lattner/// GetOrCreateLLVMFunction - If the specified mangled name is not in the 61874391b48b4791cded373683a3baf67314f358d50Chris Lattner/// module, create and return an llvm Function with the specified type. If there 61974391b48b4791cded373683a3baf67314f358d50Chris Lattner/// is something in the module with the specified name, return it potentially 62074391b48b4791cded373683a3baf67314f358d50Chris Lattner/// bitcasted to the right type. 62174391b48b4791cded373683a3baf67314f358d50Chris Lattner/// 62274391b48b4791cded373683a3baf67314f358d50Chris Lattner/// If D is non-null, it specifies a decl that correspond to this. This is used 62374391b48b4791cded373683a3baf67314f358d50Chris Lattner/// to set the attributes on the function when it is first created. 62474391b48b4791cded373683a3baf67314f358d50Chris Lattnerllvm::Constant *CodeGenModule::GetOrCreateLLVMFunction(const char *MangledName, 62574391b48b4791cded373683a3baf67314f358d50Chris Lattner const llvm::Type *Ty, 626b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner GlobalDecl D) { 6270558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner // Lookup the entry, lazily creating it if necessary. 6280558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner llvm::GlobalValue *&Entry = GlobalDeclMap[MangledName]; 6290558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner if (Entry) { 6300558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner if (Entry->getType()->getElementType() == Ty) 6310558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner return Entry; 6321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6330558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner // Make sure the result is of the correct type. 63496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson const llvm::Type *PTy = llvm::PointerType::getUnqual(Ty); 6353c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson return llvm::ConstantExpr::getBitCast(Entry, PTy); 6360558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner } 6371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 63867b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // This is the first use or definition of a mangled name. If there is a 63967b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // deferred decl with this name, remember that we need to emit it at the end 64067b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // of the file. 6411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::DenseMap<const char*, GlobalDecl>::iterator DDI = 6429fa959d5bfbbb17d7c6ba71252219201fc8dc971Chris Lattner DeferredDecls.find(MangledName); 64367b00520c8f5b48fad722b790d87fea6be764efeChris Lattner if (DDI != DeferredDecls.end()) { 64467b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Move the potentially referenced deferred decl to the DeferredDeclsToEmit 64567b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // list, and remove it from DeferredDecls (since we don't need it anymore). 64667b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDeclsToEmit.push_back(DDI->second); 64767b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDecls.erase(DDI); 648b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner } else if (const FunctionDecl *FD = cast_or_null<FunctionDecl>(D.getDecl())) { 6490c337ed63ff0f04fd8315afabb2d7a51969fdc97Chris Lattner // If this the first reference to a C++ inline function in a class, queue up 6500c337ed63ff0f04fd8315afabb2d7a51969fdc97Chris Lattner // the deferred function body for emission. These are not seen as 6510c337ed63ff0f04fd8315afabb2d7a51969fdc97Chris Lattner // top-level declarations. 652b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner if (FD->isThisDeclarationADefinition() && MayDeferGeneration(FD)) 653b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner DeferredDeclsToEmit.push_back(D); 654c7ff8e19081c2e974f05f66c4fa9b40750fc655fFariborz Jahanian // A called constructor which has no definition or declaration need be 655c7ff8e19081c2e974f05f66c4fa9b40750fc655fFariborz Jahanian // synthesized. 656c7ff8e19081c2e974f05f66c4fa9b40750fc655fFariborz Jahanian else if (const CXXConstructorDecl *CD = dyn_cast<CXXConstructorDecl>(FD)) { 6571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const CXXRecordDecl *ClassDecl = 658c7ff8e19081c2e974f05f66c4fa9b40750fc655fFariborz Jahanian cast<CXXRecordDecl>(CD->getDeclContext()); 65997a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian if (CD->isCopyConstructor(getContext())) 66097a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian DeferredCopyConstructorToEmit(D); 6619889652dbc10060cd604861ed2e5bc6719f845b0Fariborz Jahanian else if (!ClassDecl->hasUserDeclaredConstructor()) 662c7ff8e19081c2e974f05f66c4fa9b40750fc655fFariborz Jahanian DeferredDeclsToEmit.push_back(D); 663c7ff8e19081c2e974f05f66c4fa9b40750fc655fFariborz Jahanian } 6641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump else if (isa<CXXDestructorDecl>(FD)) 665b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian DeferredDestructorToEmit(D); 666ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian else if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD)) 667ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian if (MD->isCopyAssignment()) 668ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian DeferredCopyAssignmentToEmit(D); 66967b00520c8f5b48fad722b790d87fea6be764efeChris Lattner } 6701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6710558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner // This function doesn't have a complete type (for example, the return 6720558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner // type is an incomplete struct). Use a fake type instead, and make 6730558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner // sure not to try to set attributes. 674c6c14d1cd68afcd90d097715296377f15be45210Eli Friedman bool IsIncompleteFunction = false; 6750558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner if (!isa<llvm::FunctionType>(Ty)) { 6760032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson Ty = llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), 6770558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner std::vector<const llvm::Type*>(), false); 678c6c14d1cd68afcd90d097715296377f15be45210Eli Friedman IsIncompleteFunction = true; 6790558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner } 6801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Function *F = llvm::Function::Create(cast<llvm::FunctionType>(Ty), 6810558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner llvm::Function::ExternalLinkage, 682d972678a053d4785772b75cf6c8d4ab74ac2c7f6Chris Lattner "", &getModule()); 683d972678a053d4785772b75cf6c8d4ab74ac2c7f6Chris Lattner F->setName(MangledName); 684c6c14d1cd68afcd90d097715296377f15be45210Eli Friedman if (D.getDecl()) 685c6c14d1cd68afcd90d097715296377f15be45210Eli Friedman SetFunctionAttributes(cast<FunctionDecl>(D.getDecl()), F, 686c6c14d1cd68afcd90d097715296377f15be45210Eli Friedman IsIncompleteFunction); 6870558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner Entry = F; 6880558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner return F; 6890558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner} 6900558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner 69197a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian/// Defer definition of copy constructor(s) which need be implicitly defined. 69297a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanianvoid CodeGenModule::DeferredCopyConstructorToEmit(GlobalDecl CopyCtorDecl) { 6931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const CXXConstructorDecl *CD = 69497a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian cast<CXXConstructorDecl>(CopyCtorDecl.getDecl()); 69597a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian const CXXRecordDecl *ClassDecl = cast<CXXRecordDecl>(CD->getDeclContext()); 69697a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian if (ClassDecl->hasTrivialCopyConstructor() || 69797a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian ClassDecl->hasUserDeclaredCopyConstructor()) 69897a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian return; 6991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 70097a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian // First make sure all direct base classes and virtual bases and non-static 70197a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian // data mebers which need to have their copy constructors implicitly defined 70297a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian // are defined. 12.8.p7 70397a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian for (CXXRecordDecl::base_class_const_iterator Base = ClassDecl->bases_begin(); 70497a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian Base != ClassDecl->bases_end(); ++Base) { 70597a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian CXXRecordDecl *BaseClassDecl 70697a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian = cast<CXXRecordDecl>(Base->getType()->getAs<RecordType>()->getDecl()); 7071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (CXXConstructorDecl *BaseCopyCtor = 70880e4b9e0e87064a824d72b6ff89074206ecced58Fariborz Jahanian BaseClassDecl->getCopyConstructor(Context, 0)) 70997a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian GetAddrOfCXXConstructor(BaseCopyCtor, Ctor_Complete); 71097a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian } 7111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 71297a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian for (CXXRecordDecl::field_iterator Field = ClassDecl->field_begin(), 71397a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian FieldEnd = ClassDecl->field_end(); 71497a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian Field != FieldEnd; ++Field) { 71597a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian QualType FieldType = Context.getCanonicalType((*Field)->getType()); 71697a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian if (const ArrayType *Array = Context.getAsArrayType(FieldType)) 71797a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian FieldType = Array->getElementType(); 71897a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian if (const RecordType *FieldClassType = FieldType->getAs<RecordType>()) { 719e64941280877d065a27e8cefd2a9038256d0e3acFariborz Jahanian if ((*Field)->isAnonymousStructOrUnion()) 720e64941280877d065a27e8cefd2a9038256d0e3acFariborz Jahanian continue; 72197a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian CXXRecordDecl *FieldClassDecl 722e64941280877d065a27e8cefd2a9038256d0e3acFariborz Jahanian = cast<CXXRecordDecl>(FieldClassType->getDecl()); 7231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (CXXConstructorDecl *FieldCopyCtor = 72480e4b9e0e87064a824d72b6ff89074206ecced58Fariborz Jahanian FieldClassDecl->getCopyConstructor(Context, 0)) 72597a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian GetAddrOfCXXConstructor(FieldCopyCtor, Ctor_Complete); 72697a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian } 72797a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian } 72897a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian DeferredDeclsToEmit.push_back(CopyCtorDecl); 729ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian} 730ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian 731ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian/// Defer definition of copy assignments which need be implicitly defined. 732ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanianvoid CodeGenModule::DeferredCopyAssignmentToEmit(GlobalDecl CopyAssignDecl) { 733ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian const CXXMethodDecl *CD = cast<CXXMethodDecl>(CopyAssignDecl.getDecl()); 734ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian const CXXRecordDecl *ClassDecl = cast<CXXRecordDecl>(CD->getDeclContext()); 7351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 736ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian if (ClassDecl->hasTrivialCopyAssignment() || 737ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian ClassDecl->hasUserDeclaredCopyAssignment()) 738ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian return; 7391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 740ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian // First make sure all direct base classes and virtual bases and non-static 741ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian // data mebers which need to have their copy assignments implicitly defined 742ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian // are defined. 12.8.p12 743ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian for (CXXRecordDecl::base_class_const_iterator Base = ClassDecl->bases_begin(); 744ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian Base != ClassDecl->bases_end(); ++Base) { 745ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian CXXRecordDecl *BaseClassDecl 746ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian = cast<CXXRecordDecl>(Base->getType()->getAs<RecordType>()->getDecl()); 747ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian const CXXMethodDecl *MD = 0; 748183d7181fd59842ac969cbc6fe0376f85dc63ae4Fariborz Jahanian if (!BaseClassDecl->hasTrivialCopyAssignment() && 749183d7181fd59842ac969cbc6fe0376f85dc63ae4Fariborz Jahanian !BaseClassDecl->hasUserDeclaredCopyAssignment() && 750183d7181fd59842ac969cbc6fe0376f85dc63ae4Fariborz Jahanian BaseClassDecl->hasConstCopyAssignment(getContext(), MD)) 751555b4bb2749aea2ec8e2adc351a71ec1cb9bdc33Anders Carlsson GetAddrOfFunction(MD, 0); 752ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian } 7531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 754ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian for (CXXRecordDecl::field_iterator Field = ClassDecl->field_begin(), 755ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian FieldEnd = ClassDecl->field_end(); 756ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian Field != FieldEnd; ++Field) { 757ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian QualType FieldType = Context.getCanonicalType((*Field)->getType()); 758ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian if (const ArrayType *Array = Context.getAsArrayType(FieldType)) 759ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian FieldType = Array->getElementType(); 760ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian if (const RecordType *FieldClassType = FieldType->getAs<RecordType>()) { 761ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian if ((*Field)->isAnonymousStructOrUnion()) 762ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian continue; 763ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian CXXRecordDecl *FieldClassDecl 764ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian = cast<CXXRecordDecl>(FieldClassType->getDecl()); 765ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian const CXXMethodDecl *MD = 0; 766183d7181fd59842ac969cbc6fe0376f85dc63ae4Fariborz Jahanian if (!FieldClassDecl->hasTrivialCopyAssignment() && 767183d7181fd59842ac969cbc6fe0376f85dc63ae4Fariborz Jahanian !FieldClassDecl->hasUserDeclaredCopyAssignment() && 768183d7181fd59842ac969cbc6fe0376f85dc63ae4Fariborz Jahanian FieldClassDecl->hasConstCopyAssignment(getContext(), MD)) 769555b4bb2749aea2ec8e2adc351a71ec1cb9bdc33Anders Carlsson GetAddrOfFunction(MD, 0); 770ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian } 771ad25883a644dd6b52c7923dd128a7d05fb26213cFariborz Jahanian } 7721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DeferredDeclsToEmit.push_back(CopyAssignDecl); 77397a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian} 77497a937532c24a8ea44317d4fdee26d9701a1e83cFariborz Jahanian 775b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanianvoid CodeGenModule::DeferredDestructorToEmit(GlobalDecl DtorDecl) { 776b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian const CXXDestructorDecl *DD = cast<CXXDestructorDecl>(DtorDecl.getDecl()); 777b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian const CXXRecordDecl *ClassDecl = cast<CXXRecordDecl>(DD->getDeclContext()); 778b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian if (ClassDecl->hasTrivialDestructor() || 779b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian ClassDecl->hasUserDeclaredDestructor()) 780b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian return; 781b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian 782b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian for (CXXRecordDecl::base_class_const_iterator Base = ClassDecl->bases_begin(); 783b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian Base != ClassDecl->bases_end(); ++Base) { 784b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian CXXRecordDecl *BaseClassDecl 785b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian = cast<CXXRecordDecl>(Base->getType()->getAs<RecordType>()->getDecl()); 7861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (const CXXDestructorDecl *BaseDtor = 787b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian BaseClassDecl->getDestructor(Context)) 788b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian GetAddrOfCXXDestructor(BaseDtor, Dtor_Complete); 789b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian } 7901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 791b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian for (CXXRecordDecl::field_iterator Field = ClassDecl->field_begin(), 792b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian FieldEnd = ClassDecl->field_end(); 793b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian Field != FieldEnd; ++Field) { 794b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian QualType FieldType = Context.getCanonicalType((*Field)->getType()); 795b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian if (const ArrayType *Array = Context.getAsArrayType(FieldType)) 796b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian FieldType = Array->getElementType(); 797b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian if (const RecordType *FieldClassType = FieldType->getAs<RecordType>()) { 798b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian if ((*Field)->isAnonymousStructOrUnion()) 799b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian continue; 800b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian CXXRecordDecl *FieldClassDecl 801b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian = cast<CXXRecordDecl>(FieldClassType->getDecl()); 8021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (const CXXDestructorDecl *FieldDtor = 803b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian FieldClassDecl->getDestructor(Context)) 804b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian GetAddrOfCXXDestructor(FieldDtor, Dtor_Complete); 805b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian } 806b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian } 807b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian DeferredDeclsToEmit.push_back(DtorDecl); 808b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian} 809b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian 810b193a414f13d7cfa2524a8149eff8d4871f8cbf6Fariborz Jahanian 81174391b48b4791cded373683a3baf67314f358d50Chris Lattner/// GetAddrOfFunction - Return the address of the given function. If Ty is 81274391b48b4791cded373683a3baf67314f358d50Chris Lattner/// non-null, then this function will use the specified type if it has to 81374391b48b4791cded373683a3baf67314f358d50Chris Lattner/// create it (this occurs when we see a definition of the function). 814b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattnerllvm::Constant *CodeGenModule::GetAddrOfFunction(GlobalDecl GD, 81574391b48b4791cded373683a3baf67314f358d50Chris Lattner const llvm::Type *Ty) { 81674391b48b4791cded373683a3baf67314f358d50Chris Lattner // If there was no specific requested type, just convert it now. 81774391b48b4791cded373683a3baf67314f358d50Chris Lattner if (!Ty) 8184a6835e650ff24e19ce08a3bd347c0ad186777fdAnders Carlsson Ty = getTypes().ConvertType(cast<ValueDecl>(GD.getDecl())->getType()); 8194fe95f99a2693f1145785ea5835ba6937e49c730Douglas Gregor return GetOrCreateLLVMFunction(getMangledName(GD), Ty, GD); 82074391b48b4791cded373683a3baf67314f358d50Chris Lattner} 82177ba708819285931932ecd33691a672bb59d221aEli Friedman 82274391b48b4791cded373683a3baf67314f358d50Chris Lattner/// CreateRuntimeFunction - Create a new runtime function with the specified 82374391b48b4791cded373683a3baf67314f358d50Chris Lattner/// type and name. 82474391b48b4791cded373683a3baf67314f358d50Chris Lattnerllvm::Constant * 82574391b48b4791cded373683a3baf67314f358d50Chris LattnerCodeGenModule::CreateRuntimeFunction(const llvm::FunctionType *FTy, 82674391b48b4791cded373683a3baf67314f358d50Chris Lattner const char *Name) { 82774391b48b4791cded373683a3baf67314f358d50Chris Lattner // Convert Name to be a uniqued string from the IdentifierInfo table. 828e013d685c6689ac7ae103ee88acf573422d1ed6aDaniel Dunbar Name = getContext().Idents.get(Name).getNameStart(); 829b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner return GetOrCreateLLVMFunction(Name, FTy, GlobalDecl()); 83074391b48b4791cded373683a3baf67314f358d50Chris Lattner} 831bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 83274391b48b4791cded373683a3baf67314f358d50Chris Lattner/// GetOrCreateLLVMGlobal - If the specified mangled name is not in the module, 83374391b48b4791cded373683a3baf67314f358d50Chris Lattner/// create and return an llvm GlobalVariable with the specified type. If there 83474391b48b4791cded373683a3baf67314f358d50Chris Lattner/// is something in the module with the specified name, return it potentially 83574391b48b4791cded373683a3baf67314f358d50Chris Lattner/// bitcasted to the right type. 83674391b48b4791cded373683a3baf67314f358d50Chris Lattner/// 83774391b48b4791cded373683a3baf67314f358d50Chris Lattner/// If D is non-null, it specifies a decl that correspond to this. This is used 83874391b48b4791cded373683a3baf67314f358d50Chris Lattner/// to set the attributes on the global when it is first created. 83974391b48b4791cded373683a3baf67314f358d50Chris Lattnerllvm::Constant *CodeGenModule::GetOrCreateLLVMGlobal(const char *MangledName, 84074391b48b4791cded373683a3baf67314f358d50Chris Lattner const llvm::PointerType*Ty, 84174391b48b4791cded373683a3baf67314f358d50Chris Lattner const VarDecl *D) { 8423c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar // Lookup the entry, lazily creating it if necessary. 8435d4f5c724533b994de05df49ae259120482ec366Chris Lattner llvm::GlobalValue *&Entry = GlobalDeclMap[MangledName]; 84499b53613ebe2c59d41030e987962c1ed101b2efeChris Lattner if (Entry) { 84574391b48b4791cded373683a3baf67314f358d50Chris Lattner if (Entry->getType() == Ty) 846570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner return Entry; 8471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 84899b53613ebe2c59d41030e987962c1ed101b2efeChris Lattner // Make sure the result is of the correct type. 8493c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson return llvm::ConstantExpr::getBitCast(Entry, Ty); 85099b53613ebe2c59d41030e987962c1ed101b2efeChris Lattner } 8511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 85267b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // This is the first use or definition of a mangled name. If there is a 85367b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // deferred decl with this name, remember that we need to emit it at the end 85467b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // of the file. 8551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::DenseMap<const char*, GlobalDecl>::iterator DDI = 85667b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDecls.find(MangledName); 85767b00520c8f5b48fad722b790d87fea6be764efeChris Lattner if (DDI != DeferredDecls.end()) { 85867b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // Move the potentially referenced deferred decl to the DeferredDeclsToEmit 85967b00520c8f5b48fad722b790d87fea6be764efeChris Lattner // list, and remove it from DeferredDecls (since we don't need it anymore). 86067b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDeclsToEmit.push_back(DDI->second); 86167b00520c8f5b48fad722b790d87fea6be764efeChris Lattner DeferredDecls.erase(DDI); 86267b00520c8f5b48fad722b790d87fea6be764efeChris Lattner } 8631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalVariable *GV = 8651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump new llvm::GlobalVariable(getModule(), Ty->getElementType(), false, 86699b53613ebe2c59d41030e987962c1ed101b2efeChris Lattner llvm::GlobalValue::ExternalLinkage, 8671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 0, "", 0, 86856ebe5082da7411fb37479e230b52735f77cff35Eli Friedman false, Ty->getAddressSpace()); 869d972678a053d4785772b75cf6c8d4ab74ac2c7f6Chris Lattner GV->setName(MangledName); 87049988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar 87199b53613ebe2c59d41030e987962c1ed101b2efeChris Lattner // Handle things which are present even on external declarations. 87274391b48b4791cded373683a3baf67314f358d50Chris Lattner if (D) { 873f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump // FIXME: This code is overly simple and should be merged with other global 874f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump // handling. 87574391b48b4791cded373683a3baf67314f358d50Chris Lattner GV->setConstant(D->getType().isConstant(Context)); 87649988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar 87774391b48b4791cded373683a3baf67314f358d50Chris Lattner // FIXME: Merge with other attribute handling code. 87874391b48b4791cded373683a3baf67314f358d50Chris Lattner if (D->getStorageClass() == VarDecl::PrivateExtern) 87904d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar GV->setVisibility(llvm::GlobalValue::HiddenVisibility); 88049988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar 8811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (D->hasAttr<WeakAttr>() || 88240b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis D->hasAttr<WeakImportAttr>()) 88374391b48b4791cded373683a3baf67314f358d50Chris Lattner GV->setLinkage(llvm::GlobalValue::ExternalWeakLinkage); 88456ebe5082da7411fb37479e230b52735f77cff35Eli Friedman 88556ebe5082da7411fb37479e230b52735f77cff35Eli Friedman GV->setThreadLocal(D->isThreadSpecified()); 88674391b48b4791cded373683a3baf67314f358d50Chris Lattner } 8871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 88874391b48b4791cded373683a3baf67314f358d50Chris Lattner return Entry = GV; 88974391b48b4791cded373683a3baf67314f358d50Chris Lattner} 890eda9a5ec380f172f4e0063744eb796144a125480Daniel Dunbar 891eda9a5ec380f172f4e0063744eb796144a125480Daniel Dunbar 89274391b48b4791cded373683a3baf67314f358d50Chris Lattner/// GetAddrOfGlobalVar - Return the llvm::Constant for the address of the 89374391b48b4791cded373683a3baf67314f358d50Chris Lattner/// given global variable. If Ty is non-null and if the global doesn't exist, 89474391b48b4791cded373683a3baf67314f358d50Chris Lattner/// then it will be greated with the specified type instead of whatever the 89574391b48b4791cded373683a3baf67314f358d50Chris Lattner/// normal requested type would be. 89674391b48b4791cded373683a3baf67314f358d50Chris Lattnerllvm::Constant *CodeGenModule::GetAddrOfGlobalVar(const VarDecl *D, 89774391b48b4791cded373683a3baf67314f358d50Chris Lattner const llvm::Type *Ty) { 89874391b48b4791cded373683a3baf67314f358d50Chris Lattner assert(D->hasGlobalStorage() && "Not a global variable"); 89974391b48b4791cded373683a3baf67314f358d50Chris Lattner QualType ASTTy = D->getType(); 90074391b48b4791cded373683a3baf67314f358d50Chris Lattner if (Ty == 0) 90174391b48b4791cded373683a3baf67314f358d50Chris Lattner Ty = getTypes().ConvertTypeForMem(ASTTy); 9021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::PointerType *PTy = 90496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::get(Ty, ASTTy.getAddressSpace()); 90574391b48b4791cded373683a3baf67314f358d50Chris Lattner return GetOrCreateLLVMGlobal(getMangledName(D), PTy, D); 90674391b48b4791cded373683a3baf67314f358d50Chris Lattner} 9073f75c43bd77e063342bc888ac276daf64ba0ce07Daniel Dunbar 90874391b48b4791cded373683a3baf67314f358d50Chris Lattner/// CreateRuntimeVariable - Create a new runtime global variable with the 90974391b48b4791cded373683a3baf67314f358d50Chris Lattner/// specified type and name. 91074391b48b4791cded373683a3baf67314f358d50Chris Lattnerllvm::Constant * 91174391b48b4791cded373683a3baf67314f358d50Chris LattnerCodeGenModule::CreateRuntimeVariable(const llvm::Type *Ty, 91274391b48b4791cded373683a3baf67314f358d50Chris Lattner const char *Name) { 91374391b48b4791cded373683a3baf67314f358d50Chris Lattner // Convert Name to be a uniqued string from the IdentifierInfo table. 914e013d685c6689ac7ae103ee88acf573422d1ed6aDaniel Dunbar Name = getContext().Idents.get(Name).getNameStart(); 91596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson return GetOrCreateLLVMGlobal(Name, llvm::PointerType::getUnqual(Ty), 0); 916bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar} 917bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 91803f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbarvoid CodeGenModule::EmitTentativeDefinition(const VarDecl *D) { 91903f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar assert(!D->getInit() && "Cannot emit definite definitions here!"); 92003f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar 9217520bd1de12af10ea08c662440565adbdf589317Douglas Gregor if (MayDeferGeneration(D)) { 9227520bd1de12af10ea08c662440565adbdf589317Douglas Gregor // If we have not seen a reference to this variable yet, place it 9237520bd1de12af10ea08c662440565adbdf589317Douglas Gregor // into the deferred declarations table to be emitted if needed 9247520bd1de12af10ea08c662440565adbdf589317Douglas Gregor // later. 9257520bd1de12af10ea08c662440565adbdf589317Douglas Gregor const char *MangledName = getMangledName(D); 9267520bd1de12af10ea08c662440565adbdf589317Douglas Gregor if (GlobalDeclMap.count(MangledName) == 0) { 927555b4bb2749aea2ec8e2adc351a71ec1cb9bdc33Anders Carlsson DeferredDecls[MangledName] = D; 92803f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar return; 9297520bd1de12af10ea08c662440565adbdf589317Douglas Gregor } 9307520bd1de12af10ea08c662440565adbdf589317Douglas Gregor } 9317520bd1de12af10ea08c662440565adbdf589317Douglas Gregor 9327520bd1de12af10ea08c662440565adbdf589317Douglas Gregor // The tentative definition is the only definition. 93303f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar EmitGlobalVarDefinition(D); 93403f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar} 93503f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar 9361028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregorstatic CodeGenModule::GVALinkage 9371028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas GregorGetLinkageForVariable(ASTContext &Context, const VarDecl *VD) { 9381028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor // Everything located semantically within an anonymous namespace is 9391028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor // always internal. 9401028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor if (VD->isInAnonymousNamespace()) 9411028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor return CodeGenModule::GVA_Internal; 9421028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor 9431028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor // Handle linkage for static data members. 9441028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor if (VD->isStaticDataMember()) { 9451028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor switch (VD->getTemplateSpecializationKind()) { 9461028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor case TSK_Undeclared: 9471028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor case TSK_ExplicitSpecialization: 9481028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor case TSK_ExplicitInstantiationDefinition: 9491028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor return CodeGenModule::GVA_StrongExternal; 9501028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor 9511028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor case TSK_ExplicitInstantiationDeclaration: 9521028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor assert(false && "Variable should not be instantiated"); 9531028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor // Fall through to treat this like any other instantiation. 9541028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor 9551028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor case TSK_ImplicitInstantiation: 9561028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor return CodeGenModule::GVA_TemplateInstantiation; 9571028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor } 9581028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor } 9591028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor 9601028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor // Static variables get internal linkage. 9611028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor if (VD->getStorageClass() == VarDecl::Static) 9621028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor return CodeGenModule::GVA_Internal; 9631028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor 9641028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor return CodeGenModule::GVA_StrongExternal; 9651028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor} 9661028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor 967bd012ff1fa088181646a784f385b28867372d434Daniel Dunbarvoid CodeGenModule::EmitGlobalVarDefinition(const VarDecl *D) { 9688f32f7189b12f67aa4a19bc7c3855b599980eca0Chris Lattner llvm::Constant *Init = 0; 96977ba708819285931932ecd33691a672bb59d221aEli Friedman QualType ASTTy = D->getType(); 9701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9718f32f7189b12f67aa4a19bc7c3855b599980eca0Chris Lattner if (D->getInit() == 0) { 972cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman // This is a tentative definition; tentative definitions are 97303f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // implicitly initialized with { 0 }. 97403f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // 97503f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // Note that tentative definitions are only emitted at the end of 97603f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // a translation unit, so they should never have incomplete 97703f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // type. In addition, EmitTentativeDefinition makes sure that we 97803f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // never attempt to emit a tentative definition if a real one 97903f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // exists. A use may still exists, however, so we still may need 98003f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar // to do a RAUW. 98103f5ad9a7707e098f601921fcec17ed65eb355a7Daniel Dunbar assert(!ASTTy->isIncompleteType() && "Unexpected incomplete type"); 982b0d0ea042116c1f451d3db8ceff9f1dd92bc36d2Anders Carlsson Init = EmitNullConstant(D->getType()); 98377ba708819285931932ecd33691a672bb59d221aEli Friedman } else { 984e9352cc9818ba59e7cf88500ef048991c90f3821Anders Carlsson Init = EmitConstantExpr(D->getInit(), D->getType()); 9851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9866e656f45ae04b415ba7a4c0c25e55633e2d0ecd0Eli Friedman if (!Init) { 9876e656f45ae04b415ba7a4c0c25e55633e2d0ecd0Eli Friedman QualType T = D->getInit()->getType(); 98889ed31d3f9eeb8ec77c284a5cf404a74bf5e7acfAnders Carlsson if (getLangOptions().CPlusPlus) { 98989ed31d3f9eeb8ec77c284a5cf404a74bf5e7acfAnders Carlsson CXXGlobalInits.push_back(D); 99089ed31d3f9eeb8ec77c284a5cf404a74bf5e7acfAnders Carlsson Init = EmitNullConstant(T); 99189ed31d3f9eeb8ec77c284a5cf404a74bf5e7acfAnders Carlsson } else { 99289ed31d3f9eeb8ec77c284a5cf404a74bf5e7acfAnders Carlsson ErrorUnsupported(D, "static initializer"); 99389ed31d3f9eeb8ec77c284a5cf404a74bf5e7acfAnders Carlsson Init = llvm::UndefValue::get(getTypes().ConvertType(T)); 99489ed31d3f9eeb8ec77c284a5cf404a74bf5e7acfAnders Carlsson } 9956e656f45ae04b415ba7a4c0c25e55633e2d0ecd0Eli Friedman } 9968f32f7189b12f67aa4a19bc7c3855b599980eca0Chris Lattner } 9978e53e720b3d7c962e91138a130dbd5d6c2def0e5Devang Patel 9982d58406872e5af0c924623d9f7c194c4f09936d3Chris Lattner const llvm::Type* InitType = Init->getType(); 999570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner llvm::Constant *Entry = GetAddrOfGlobalVar(D, InitType); 10001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1001570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // Strip off a bitcast if we got one back. 1002570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner if (llvm::ConstantExpr *CE = dyn_cast<llvm::ConstantExpr>(Entry)) { 10039d4a15fd3b85434c43ea27562793de63a793321aChris Lattner assert(CE->getOpcode() == llvm::Instruction::BitCast || 10049d4a15fd3b85434c43ea27562793de63a793321aChris Lattner // all zero index gep. 10059d4a15fd3b85434c43ea27562793de63a793321aChris Lattner CE->getOpcode() == llvm::Instruction::GetElementPtr); 1006570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner Entry = CE->getOperand(0); 1007570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner } 10081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1009570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // Entry is now either a Function or GlobalVariable. 1010570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner llvm::GlobalVariable *GV = dyn_cast<llvm::GlobalVariable>(Entry); 10111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1012570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // We have a definition after a declaration with the wrong type. 1013570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // We must make a new GlobalVariable* and update everything that used OldGV 1014570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // (a declaration or tentative definition) with the new GlobalVariable* 1015570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // (which will be a definition). 1016570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // 1017570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // This happens if there is a prototype for a global (e.g. 1018570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // "extern int x[];") and then a definition of a different type (e.g. 1019570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // "int x[10];"). This also happens when an initializer has a different type 1020570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // from the type of the global (this happens with unions). 1021570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner if (GV == 0 || 1022570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner GV->getType()->getElementType() != InitType || 1023570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner GV->getType()->getAddressSpace() != ASTTy.getAddressSpace()) { 10241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1025570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // Remove the old entry from GlobalDeclMap so that we'll create a new one. 1026570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner GlobalDeclMap.erase(getMangledName(D)); 1027232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar 1028570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner // Make a new global with the correct type, this is now guaranteed to work. 1029570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner GV = cast<llvm::GlobalVariable>(GetAddrOfGlobalVar(D, InitType)); 10300558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner GV->takeName(cast<llvm::GlobalValue>(Entry)); 10310558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner 103277ba708819285931932ecd33691a672bb59d221aEli Friedman // Replace all uses of the old global with the new global 10331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Constant *NewPtrForOldDecl = 10343c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(GV, Entry->getType()); 1035570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner Entry->replaceAllUsesWith(NewPtrForOldDecl); 103677ba708819285931932ecd33691a672bb59d221aEli Friedman 103777ba708819285931932ecd33691a672bb59d221aEli Friedman // Erase the old global, since it is no longer used. 1038570585c91dee98d7ba8ccf1198c03208ba17966bChris Lattner cast<llvm::GlobalValue>(Entry)->eraseFromParent(); 103977ba708819285931932ecd33691a672bb59d221aEli Friedman } 104077ba708819285931932ecd33691a672bb59d221aEli Friedman 104140b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (const AnnotateAttr *AA = D->getAttr<AnnotateAttr>()) { 10428bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman SourceManager &SM = Context.getSourceManager(); 10438bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman AddAnnotation(EmitAnnotateAttr(GV, AA, 1044f7cf85b330bedd2877e1371fb0a83e99751ae162Chris Lattner SM.getInstantiationLineNumber(D->getLocation()))); 10458bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman } 10468bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman 104788a69ad80e1550e9932666e6efa050a5b1223889Chris Lattner GV->setInitializer(Init); 1048e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner 1049e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner // If it is safe to mark the global 'constant', do so now. 1050e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner GV->setConstant(false); 1051e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner if (D->getType().isConstant(Context)) { 1052e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner // FIXME: In C++, if the variable has a non-trivial ctor/dtor or any mutable 1053e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner // members, it cannot be declared "LLVM const". 1054e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner GV->setConstant(true); 1055e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner } 10561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10570de40af3a3aa14e3854c0eafeabd08f6762801f9Eli Friedman GV->setAlignment(getContext().getDeclAlignInBytes(D)); 105808d7802a406ee4a7cc18e8fce0c137b8c410ea7cEli Friedman 105988a69ad80e1550e9932666e6efa050a5b1223889Chris Lattner // Set the llvm linkage type as appropriate. 10601028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor GVALinkage Linkage = GetLinkageForVariable(getContext(), D); 1061a0f00a71fcb0f98298709d5e5318339acf7958acDouglas Gregor if (Linkage == GVA_Internal) 10628fabd78f1976243cb223fb3e969c6f317d1ae44dChris Lattner GV->setLinkage(llvm::Function::InternalLinkage); 106340b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis else if (D->hasAttr<DLLImportAttr>()) 1064ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner GV->setLinkage(llvm::Function::DLLImportLinkage); 106540b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis else if (D->hasAttr<DLLExportAttr>()) 1066ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner GV->setLinkage(llvm::Function::DLLExportLinkage); 1067e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner else if (D->hasAttr<WeakAttr>()) { 1068e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner if (GV->isConstant()) 1069e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner GV->setLinkage(llvm::GlobalVariable::WeakODRLinkage); 1070e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner else 1071e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner GV->setLinkage(llvm::GlobalVariable::WeakAnyLinkage); 10721028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor } else if (Linkage == GVA_TemplateInstantiation) 10731028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor GV->setLinkage(llvm::GlobalVariable::WeakAnyLinkage); 10741028c9f0afc1cc5f4951b39b7067fa57c1fea07bDouglas Gregor else if (!CompileOpts.NoCommon && 1075309457d0f1b416c1b379c9f3e172848adffedb23Chris Lattner !D->hasExternalStorage() && !D->getInit() && 1076e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner !D->getAttr<SectionAttr>()) { 107704d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar GV->setLinkage(llvm::GlobalVariable::CommonLinkage); 1078e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner // common vars aren't constant even if declared const. 1079e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner GV->setConstant(false); 1080e78b86f3201ae5f09e2cf85bd6558f1d9b34de26Chris Lattner } else 108104d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar GV->setLinkage(llvm::GlobalVariable::ExternalLinkage); 10827e714cd931fa3a90bfd728318a92485aa3e95748Daniel Dunbar 10837c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar SetCommonAttributes(D, GV); 108404d4078425614bf9fd58d606335c1f5f74ee7fa4Daniel Dunbar 1085686226b538e72c5059ab7c9a8f87eb883193b645Sanjiv Gupta // Emit global variable debug information. 10862d58406872e5af0c924623d9f7c194c4f09936d3Chris Lattner if (CGDebugInfo *DI = getDebugInfo()) { 108766031a5594bc9a7dc0dc5137c3e7955f835e4639Daniel Dunbar DI->setLocation(D->getLocation()); 1088686226b538e72c5059ab7c9a8f87eb883193b645Sanjiv Gupta DI->EmitGlobalVariable(GV, D); 1089686226b538e72c5059ab7c9a8f87eb883193b645Sanjiv Gupta } 109088a69ad80e1550e9932666e6efa050a5b1223889Chris Lattner} 10915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1092bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// ReplaceUsesOfNonProtoTypeWithRealFunction - This function is called when we 1093bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// implement a function with no prototype, e.g. "int foo() {}". If there are 1094bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// existing call uses of the old function in the module, this adjusts them to 1095bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// call the new function directly. 1096bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// 1097bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// This is not just a cleanup: the always_inline pass requires direct calls to 1098bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// functions to be able to inline them. If there is a bitcast in the way, it 1099bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// won't inline them. Instcombine normally deletes these calls, but it isn't 1100bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner/// run at -O0. 1101bdb0132722082886558f31eccdba06ae1852c0eeChris Lattnerstatic void ReplaceUsesOfNonProtoTypeWithRealFunction(llvm::GlobalValue *Old, 1102bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner llvm::Function *NewFn) { 1103bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // If we're redefining a global as a function, don't transform it. 1104bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner llvm::Function *OldFn = dyn_cast<llvm::Function>(Old); 1105bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner if (OldFn == 0) return; 11061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1107bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner const llvm::Type *NewRetTy = NewFn->getReturnType(); 1108bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner llvm::SmallVector<llvm::Value*, 4> ArgList; 1109bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner 1110bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner for (llvm::Value::use_iterator UI = OldFn->use_begin(), E = OldFn->use_end(); 1111bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner UI != E; ) { 1112bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // TODO: Do invokes ever occur in C code? If so, we should handle them too. 111308c93a7f2210b464e5abe298a5474b99414615f6Chris Lattner unsigned OpNo = UI.getOperandNo(); 1114bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner llvm::CallInst *CI = dyn_cast<llvm::CallInst>(*UI++); 111508c93a7f2210b464e5abe298a5474b99414615f6Chris Lattner if (!CI || OpNo != 0) continue; 11161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1117bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // If the return types don't match exactly, and if the call isn't dead, then 1118bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // we can't transform this call. 1119bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner if (CI->getType() != NewRetTy && !CI->use_empty()) 1120bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner continue; 1121bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner 1122bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // If the function was passed too few arguments, don't transform. If extra 1123bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // arguments were passed, we silently drop them. If any of the types 1124bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // mismatch, we don't transform. 1125bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner unsigned ArgNo = 0; 1126bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner bool DontTransform = false; 1127bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner for (llvm::Function::arg_iterator AI = NewFn->arg_begin(), 1128bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner E = NewFn->arg_end(); AI != E; ++AI, ++ArgNo) { 1129bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner if (CI->getNumOperands()-1 == ArgNo || 1130bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner CI->getOperand(ArgNo+1)->getType() != AI->getType()) { 1131bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner DontTransform = true; 1132bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner break; 1133bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner } 1134bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner } 1135bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner if (DontTransform) 1136bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner continue; 11371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1138bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // Okay, we can transform this. Create the new call instruction and copy 1139bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // over the required information. 1140bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner ArgList.append(CI->op_begin()+1, CI->op_begin()+1+ArgNo); 1141bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner llvm::CallInst *NewCall = llvm::CallInst::Create(NewFn, ArgList.begin(), 1142bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner ArgList.end(), "", CI); 1143bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner ArgList.clear(); 1144ffbb15e54a6dc120087003d1e42448b8705bd58aBenjamin Kramer if (!NewCall->getType()->isVoidTy()) 1145bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner NewCall->takeName(CI); 1146bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner NewCall->setAttributes(CI->getAttributes()); 1147ca6408c3176783f0b29da4679a08512aa05f0c73Daniel Dunbar NewCall->setCallingConv(CI->getCallingConv()); 1148bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner 1149bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // Finally, remove the old call, replacing any uses with the new one. 115000549fcec0490b2daf27543e532f94adbb186063Chris Lattner if (!CI->use_empty()) 115100549fcec0490b2daf27543e532f94adbb186063Chris Lattner CI->replaceAllUsesWith(NewCall); 11523b122bc5f1203615e2128e0c1a63da438865b1ccDevang Patel 1153aa40454a14837c573f323e29269cc0b53f495a13Devang Patel // Copy any custom metadata attached with CI. 1154aa40454a14837c573f323e29269cc0b53f495a13Devang Patel llvm::MetadataContext &TheMetadata = CI->getContext().getMetadata(); 1155aa40454a14837c573f323e29269cc0b53f495a13Devang Patel TheMetadata.copyMD(CI, NewCall); 1156aa40454a14837c573f323e29269cc0b53f495a13Devang Patel 1157bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner CI->eraseFromParent(); 1158bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner } 1159bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner} 1160bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner 1161bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 1162b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattnervoid CodeGenModule::EmitGlobalFunctionDefinition(GlobalDecl GD) { 11632b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson const llvm::FunctionType *Ty; 1164b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner const FunctionDecl *D = cast<FunctionDecl>(GD.getDecl()); 11651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11662b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(D)) { 1167183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall bool isVariadic = D->getType()->getAs<FunctionProtoType>()->isVariadic(); 11681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11692b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson Ty = getTypes().GetFunctionType(getTypes().getFunctionInfo(MD), isVariadic); 11702b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson } else { 11712b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson Ty = cast<llvm::FunctionType>(getTypes().ConvertType(D->getType())); 11721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11732b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson // As a special case, make sure that definitions of K&R function 11742b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson // "type foo()" aren't declared as varargs (which forces the backend 11752b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson // to do unnecessary work). 11762b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson if (D->getType()->isFunctionNoProtoType()) { 11772b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson assert(Ty->isVarArg() && "Didn't lower type as expected"); 11781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Due to stret, the lowered function could have arguments. 11791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Just create the same type as was lowered by ConvertType 11802b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson // but strip off the varargs bit. 11812b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson std::vector<const llvm::Type*> Args(Ty->param_begin(), Ty->param_end()); 118296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson Ty = llvm::FunctionType::get(Ty->getReturnType(), Args, false); 11832b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson } 1184ff75e1db95a53c7606e0bb114cf9adc59ab3d7f6Chris Lattner } 1185d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar 11869fa959d5bfbbb17d7c6ba71252219201fc8dc971Chris Lattner // Get or create the prototype for the function. 1187b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner llvm::Constant *Entry = GetAddrOfFunction(GD, Ty); 11881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11890558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner // Strip off a bitcast if we got one back. 11900558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner if (llvm::ConstantExpr *CE = dyn_cast<llvm::ConstantExpr>(Entry)) { 11910558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner assert(CE->getOpcode() == llvm::Instruction::BitCast); 11920558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner Entry = CE->getOperand(0); 11930558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner } 11941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11960558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner if (cast<llvm::GlobalValue>(Entry)->getType()->getElementType() != Ty) { 1197bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner llvm::GlobalValue *OldFn = cast<llvm::GlobalValue>(Entry); 11981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 119942745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar // If the types mismatch then we have to rewrite the definition. 1200bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner assert(OldFn->isDeclaration() && 12010558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner "Shouldn't replace non-declaration"); 120234809507232bc4c3c4840c7d092c7440219fddafChris Lattner 120362b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // F is the Function* for the one with the wrong type, we must make a new 120462b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // Function* and update everything that used F (a declaration) with the new 120562b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // Function* (which will be a definition). 120662b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // 120762b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // This happens if there is a prototype for a function 120862b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // (e.g. "int f()") and then a definition of a different type 120962b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // (e.g. "int f(int x)"). Start by making a new function of the 121062b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // correct type, RAUW, then steal the name. 121134809507232bc4c3c4840c7d092c7440219fddafChris Lattner GlobalDeclMap.erase(getMangledName(D)); 1212b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner llvm::Function *NewFn = cast<llvm::Function>(GetAddrOfFunction(GD, Ty)); 1213bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner NewFn->takeName(OldFn); 12141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1215bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // If this is an implementation of a function without a prototype, try to 1216bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // replace any existing uses of the function (which may be calls) with uses 1217bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner // of the new function 12189fa959d5bfbbb17d7c6ba71252219201fc8dc971Chris Lattner if (D->getType()->isFunctionNoProtoType()) { 1219bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner ReplaceUsesOfNonProtoTypeWithRealFunction(OldFn, NewFn); 12209fa959d5bfbbb17d7c6ba71252219201fc8dc971Chris Lattner OldFn->removeDeadConstantUsers(); 12219fa959d5bfbbb17d7c6ba71252219201fc8dc971Chris Lattner } 12221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 122362b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // Replace uses of F with the Function we will endow with a body. 1224bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner if (!Entry->use_empty()) { 12251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Constant *NewPtrForOldDecl = 12263c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(NewFn, Entry->getType()); 1227bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner Entry->replaceAllUsesWith(NewPtrForOldDecl); 1228bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner } 12291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 123062b33ea51adbd0e7f2f05983e9e4a3a2b2ed26deChris Lattner // Ok, delete the old function now, which is dead. 1231bdb0132722082886558f31eccdba06ae1852c0eeChris Lattner OldFn->eraseFromParent(); 12321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12330558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner Entry = NewFn; 1234bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } 12351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12360558e79840bfdbbd38c6e2b4f6765bf0158e85f4Chris Lattner llvm::Function *Fn = cast<llvm::Function>(Entry); 1237bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 1238219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar CodeGenFunction(*this).GenerateCode(D, Fn); 12396379a7a15335e0af543a942efe9cfd514a83dab8Daniel Dunbar 12407c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar SetFunctionDefinitionAttributes(D, Fn); 12417c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar SetLLVMFunctionAttributesForDefinition(D, Fn); 12421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 124340b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (const ConstructorAttr *CA = D->getAttr<ConstructorAttr>()) 1244219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar AddGlobalCtor(Fn, CA->getPriority()); 124540b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (const DestructorAttr *DA = D->getAttr<DestructorAttr>()) 1246219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar AddGlobalDtor(Fn, DA->getPriority()); 1247bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar} 1248bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 1249bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattnervoid CodeGenModule::EmitAliasDefinition(const ValueDecl *D) { 125040b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis const AliasAttr *AA = D->getAttr<AliasAttr>(); 1251bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner assert(AA && "Not an alias?"); 1252bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 1253bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner const llvm::Type *DeclTy = getTypes().ConvertTypeForMem(D->getType()); 12541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1255bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // Unique the name through the identifier table. 1256bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner const char *AliaseeName = AA->getAliasee().c_str(); 1257e013d685c6689ac7ae103ee88acf573422d1ed6aDaniel Dunbar AliaseeName = getContext().Idents.get(AliaseeName).getNameStart(); 1258bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 1259bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // Create a reference to the named value. This ensures that it is emitted 1260bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // if a deferred decl. 1261bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner llvm::Constant *Aliasee; 1262bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner if (isa<llvm::FunctionType>(DeclTy)) 1263b4880bab7fc1b61267cfd9a0ad52188e7a828cb3Chris Lattner Aliasee = GetOrCreateLLVMFunction(AliaseeName, DeclTy, GlobalDecl()); 1264bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner else 1265bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner Aliasee = GetOrCreateLLVMGlobal(AliaseeName, 126696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(DeclTy), 0); 1267bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 1268bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // Create the new alias itself, but don't set a name yet. 12691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalValue *GA = 1270bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner new llvm::GlobalAlias(Aliasee->getType(), 1271bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner llvm::Function::ExternalLinkage, 1272bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner "", Aliasee, &getModule()); 12731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1274bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // See if there is already something with the alias' name in the module. 1275bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner const char *MangledName = getMangledName(D); 1276bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner llvm::GlobalValue *&Entry = GlobalDeclMap[MangledName]; 12771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1278bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner if (Entry && !Entry->isDeclaration()) { 1279bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // If there is a definition in the module, then it wins over the alias. 1280bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // This is dubious, but allow it to be safe. Just ignore the alias. 1281bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner GA->eraseFromParent(); 1282bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner return; 1283bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner } 12841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1285bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner if (Entry) { 1286bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // If there is a declaration in the module, then we had an extern followed 1287bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // by the alias, as in: 1288bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // extern int test6(); 1289bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // ... 1290bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // int test6() __attribute__((alias("test7"))); 1291bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // 1292bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // Remove it and replace uses of it with the alias. 12931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12943c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Entry->replaceAllUsesWith(llvm::ConstantExpr::getBitCast(GA, 1295bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner Entry->getType())); 1296bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner Entry->eraseFromParent(); 1297bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner } 12981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1299bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner // Now we know that there is no conflict, set the name. 1300bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner Entry = GA; 1301bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner GA->setName(MangledName); 1302bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 13037c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // Set attributes which are particular to an alias; this is a 13047c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // specialization of the attributes which may be set on a global 13057c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // variable/function. 130640b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis if (D->hasAttr<DLLExportAttr>()) { 13077c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 13087c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar // The dllexport attribute is ignored for undefined symbols. 13096fb0aee4f9dc261bbec72e1283ad8dc0557a6d96Argyrios Kyrtzidis if (FD->getBody()) 13107c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar GA->setLinkage(llvm::Function::DLLExportLinkage); 13117c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar } else { 13127c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar GA->setLinkage(llvm::Function::DLLExportLinkage); 13137c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar } 13141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } else if (D->hasAttr<WeakAttr>() || 131540b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis D->hasAttr<WeakImportAttr>()) { 13167c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar GA->setLinkage(llvm::Function::WeakAnyLinkage); 13177c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar } 13187c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar 13197c65e990e9f0dafaf9adbc59b766dcc23eaee845Daniel Dunbar SetCommonAttributes(D, GA); 1320bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner} 1321bd53271dc7570b54f7b7cab7b09bcf04c6e927f6Chris Lattner 1322b808c952bbff821dce727dd801a1098d64394f98Chris Lattner/// getBuiltinLibFunction - Given a builtin id for a function like 1323b808c952bbff821dce727dd801a1098d64394f98Chris Lattner/// "__builtin_fabsf", return a Function* for "fabsf". 132434771b594ca8cdf8cd2e40b27170efa4ed2833c5Daniel Dunbarllvm::Value *CodeGenModule::getBuiltinLibFunction(const FunctionDecl *FD, 132534771b594ca8cdf8cd2e40b27170efa4ed2833c5Daniel Dunbar unsigned BuiltinID) { 13263e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor assert((Context.BuiltinInfo.isLibFunction(BuiltinID) || 13271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Context.BuiltinInfo.isPredefinedLibFunction(BuiltinID)) && 13283e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor "isn't a lib fn"); 13291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13303e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor // Get the name, skip over the __builtin_ prefix (if necessary). 13313e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor const char *Name = Context.BuiltinInfo.GetName(BuiltinID); 13323e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor if (Context.BuiltinInfo.isLibFunction(BuiltinID)) 13333e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor Name += 10; 13341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1335bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner // Get the type for the builtin. 133686df27bbdbb98c39ec2184695c0561209f91beddChris Lattner ASTContext::GetBuiltinTypeError Error; 133786df27bbdbb98c39ec2184695c0561209f91beddChris Lattner QualType Type = Context.GetBuiltinType(BuiltinID, Error); 133886df27bbdbb98c39ec2184695c0561209f91beddChris Lattner assert(Error == ASTContext::GE_None && "Can't get builtin type"); 1339370ab3f1373841d70582feac9e35c3c6b3489f63Douglas Gregor 13401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::FunctionType *Ty = 1341bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner cast<llvm::FunctionType>(getTypes().ConvertType(Type)); 1342bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 1343b808c952bbff821dce727dd801a1098d64394f98Chris Lattner // Unique the name through the identifier table. 1344e013d685c6689ac7ae103ee88acf573422d1ed6aDaniel Dunbar Name = getContext().Idents.get(Name).getNameStart(); 134534771b594ca8cdf8cd2e40b27170efa4ed2833c5Daniel Dunbar return GetOrCreateLLVMFunction(Name, Ty, GlobalDecl(FD)); 1346bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner} 1347bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 13487acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattnerllvm::Function *CodeGenModule::getIntrinsic(unsigned IID,const llvm::Type **Tys, 13497acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattner unsigned NumTys) { 13507acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattner return llvm::Intrinsic::getDeclaration(&getModule(), 13517acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattner (llvm::Intrinsic::ID)IID, Tys, NumTys); 13527acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattner} 1353bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 13545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerllvm::Function *CodeGenModule::getMemCpyFn() { 13555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (MemCpyFn) return MemCpyFn; 13560032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson const llvm::Type *IntPtr = TheTargetData.getIntPtrType(VMContext); 13574e8a9e8640a6717120394ee2ee5f27989757754dChris Lattner return MemCpyFn = getIntrinsic(llvm::Intrinsic::memcpy, &IntPtr, 1); 13585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1359c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 13600c99509927a0c7a48490486b9fec287b63e5c09cEli Friedmanllvm::Function *CodeGenModule::getMemMoveFn() { 13610c99509927a0c7a48490486b9fec287b63e5c09cEli Friedman if (MemMoveFn) return MemMoveFn; 13620032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson const llvm::Type *IntPtr = TheTargetData.getIntPtrType(VMContext); 13634e8a9e8640a6717120394ee2ee5f27989757754dChris Lattner return MemMoveFn = getIntrinsic(llvm::Intrinsic::memmove, &IntPtr, 1); 13640c99509927a0c7a48490486b9fec287b63e5c09cEli Friedman} 13650c99509927a0c7a48490486b9fec287b63e5c09cEli Friedman 136641ef30e869d3f4940437503eb6a2cf70819fdb08Lauro Ramos Venanciollvm::Function *CodeGenModule::getMemSetFn() { 136741ef30e869d3f4940437503eb6a2cf70819fdb08Lauro Ramos Venancio if (MemSetFn) return MemSetFn; 13680032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson const llvm::Type *IntPtr = TheTargetData.getIntPtrType(VMContext); 13694e8a9e8640a6717120394ee2ee5f27989757754dChris Lattner return MemSetFn = getIntrinsic(llvm::Intrinsic::memset, &IntPtr, 1); 137041ef30e869d3f4940437503eb6a2cf70819fdb08Lauro Ramos Venancio} 13717acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattner 13721d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbarstatic llvm::StringMapEntry<llvm::Constant*> & 13731d5529132e4620562cab931c1f84c24e42f02741Daniel DunbarGetConstantCFStringEntry(llvm::StringMap<llvm::Constant*> &Map, 13741d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar const StringLiteral *Literal, 137570ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar bool TargetIsLSB, 13761d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar bool &IsUTF16, 13771d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar unsigned &StringLength) { 1378df4eee9b035cc4b95b1ea72635e7429d06b0ecc8Daniel Dunbar unsigned NumBytes = Literal->getByteLength(); 13791d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar 1380f015b034159d40e7033309e50036804eb1971787Daniel Dunbar // Check for simple case. 1381f015b034159d40e7033309e50036804eb1971787Daniel Dunbar if (!Literal->containsNonAsciiOrNull()) { 1382f015b034159d40e7033309e50036804eb1971787Daniel Dunbar StringLength = NumBytes; 1383f015b034159d40e7033309e50036804eb1971787Daniel Dunbar return Map.GetOrCreateValue(llvm::StringRef(Literal->getStrData(), 1384f015b034159d40e7033309e50036804eb1971787Daniel Dunbar StringLength)); 1385f015b034159d40e7033309e50036804eb1971787Daniel Dunbar } 1386f015b034159d40e7033309e50036804eb1971787Daniel Dunbar 13871d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar // Otherwise, convert the UTF8 literals into a byte string. 13881d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar llvm::SmallVector<UTF16, 128> ToBuf(NumBytes); 13891d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar const UTF8 *FromPtr = (UTF8 *)Literal->getStrData(); 13901d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar UTF16 *ToPtr = &ToBuf[0]; 13911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ConversionResult Result = ConvertUTF8toUTF16(&FromPtr, FromPtr + NumBytes, 13931d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar &ToPtr, ToPtr + NumBytes, 13941d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar strictConversion); 13951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13961d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar // Check for conversion failure. 13971d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar if (Result != conversionOK) { 13981d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar // FIXME: Have Sema::CheckObjCString() validate the UTF-8 string and remove 13991d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar // this duplicate code. 14001d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar assert(Result == sourceIllegal && "UTF-8 to UTF-16 conversion failed"); 1401f015b034159d40e7033309e50036804eb1971787Daniel Dunbar StringLength = NumBytes; 1402f015b034159d40e7033309e50036804eb1971787Daniel Dunbar return Map.GetOrCreateValue(llvm::StringRef(Literal->getStrData(), 1403f015b034159d40e7033309e50036804eb1971787Daniel Dunbar StringLength)); 1404e9b7d8ace8674585818990cff585daae7745bd88Steve Naroff } 14051d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar 140670ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar // ConvertUTF8toUTF16 returns the length in ToPtr. 14071d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar StringLength = ToPtr - &ToBuf[0]; 140870ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar 140970ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar // Render the UTF-16 string into a byte array and convert to the target byte 141070ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar // order. 141170ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar // 141270ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar // FIXME: This isn't something we should need to do here. 141370ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar llvm::SmallString<128> AsBytes; 141470ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar AsBytes.reserve(StringLength * 2); 141570ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar for (unsigned i = 0; i != StringLength; ++i) { 141670ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar unsigned short Val = ToBuf[i]; 141770ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar if (TargetIsLSB) { 141870ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar AsBytes.push_back(Val & 0xFF); 141970ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar AsBytes.push_back(Val >> 8); 142070ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar } else { 142170ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar AsBytes.push_back(Val >> 8); 142270ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar AsBytes.push_back(Val & 0xFF); 142370ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar } 142470ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar } 1425434da48d0e35764f18b3fc96c75504746050b046Daniel Dunbar // Append one extra null character, the second is automatically added by our 1426434da48d0e35764f18b3fc96c75504746050b046Daniel Dunbar // caller. 1427434da48d0e35764f18b3fc96c75504746050b046Daniel Dunbar AsBytes.push_back(0); 142870ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar 14291d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar IsUTF16 = true; 143070ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar return Map.GetOrCreateValue(llvm::StringRef(AsBytes.data(), AsBytes.size())); 14311d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar} 14321d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar 14331d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbarllvm::Constant * 14341d5529132e4620562cab931c1f84c24e42f02741Daniel DunbarCodeGenModule::GetAddrOfConstantCFString(const StringLiteral *Literal) { 14351d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar unsigned StringLength = 0; 14361d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar bool isUTF16 = false; 14371d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar llvm::StringMapEntry<llvm::Constant*> &Entry = 14381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump GetConstantCFStringEntry(CFConstantStringMap, Literal, 143970ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar getTargetData().isLittleEndian(), 144070ee975fad4653fa09f8e77f9a46a7b1f592ef59Daniel Dunbar isUTF16, StringLength); 14411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14421d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar if (llvm::Constant *C = Entry.getValue()) 14431d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar return C; 14441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14450032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Constant *Zero = 14460032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Constant::getNullValue(llvm::Type::getInt32Ty(VMContext)); 14473e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar llvm::Constant *Zeros[] = { Zero, Zero }; 14481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14499d4a15fd3b85434c43ea27562793de63a793321aChris Lattner // If we don't already have it, get __CFConstantStringClassReference. 1450c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson if (!CFConstantStringClassRef) { 1451c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson const llvm::Type *Ty = getTypes().ConvertType(getContext().IntTy); 145296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson Ty = llvm::ArrayType::get(Ty, 0); 14531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Constant *GV = CreateRuntimeVariable(Ty, 14549d4a15fd3b85434c43ea27562793de63a793321aChris Lattner "__CFConstantStringClassReference"); 14553e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar // Decay array -> ptr 14563e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar CFConstantStringClassRef = 14573c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getGetElementPtr(GV, Zeros, 2); 1458c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson } 14591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1460e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson QualType CFTy = getContext().getCFConstantStringType(); 14613e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar 14621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::StructType *STy = 1463e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson cast<llvm::StructType>(getTypes().ConvertType(CFTy)); 1464e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson 14655add6835b0c6b0f67e19fd5366825d3e41eb0dcfAnders Carlsson std::vector<llvm::Constant*> Fields(4); 146644b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 1467c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // Class pointer. 14685add6835b0c6b0f67e19fd5366825d3e41eb0dcfAnders Carlsson Fields[0] = CFConstantStringClassRef; 14691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1470c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // Flags. 14713e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar const llvm::Type *Ty = getTypes().ConvertType(getContext().UnsignedIntTy); 14721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Fields[1] = isUTF16 ? llvm::ConstantInt::get(Ty, 0x07d0) : 14735add6835b0c6b0f67e19fd5366825d3e41eb0dcfAnders Carlsson llvm::ConstantInt::get(Ty, 0x07C8); 14745add6835b0c6b0f67e19fd5366825d3e41eb0dcfAnders Carlsson 1475c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // String pointer. 14760032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Constant *C = llvm::ConstantArray::get(VMContext, Entry.getKey().str()); 1477a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar 1478278b9f06933c385ffbccc15f8491787470cb4a1bChris Lattner const char *Sect = 0; 147995b851e55c328af4b69da7bfc1124bf258c0ffe5Chris Lattner llvm::GlobalValue::LinkageTypes Linkage; 1480278b9f06933c385ffbccc15f8491787470cb4a1bChris Lattner bool isConstant; 1481a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar if (isUTF16) { 1482a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar Sect = getContext().Target.getUnicodeStringSection(); 1483278b9f06933c385ffbccc15f8491787470cb4a1bChris Lattner // FIXME: why do utf strings get "_" labels instead of "L" labels? 148495b851e55c328af4b69da7bfc1124bf258c0ffe5Chris Lattner Linkage = llvm::GlobalValue::InternalLinkage; 1485278b9f06933c385ffbccc15f8491787470cb4a1bChris Lattner // Note: -fwritable-strings doesn't make unicode CFStrings writable, but 1486278b9f06933c385ffbccc15f8491787470cb4a1bChris Lattner // does make plain ascii ones writable. 1487278b9f06933c385ffbccc15f8491787470cb4a1bChris Lattner isConstant = true; 1488a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar } else { 148995b851e55c328af4b69da7bfc1124bf258c0ffe5Chris Lattner Linkage = llvm::GlobalValue::PrivateLinkage; 1490278b9f06933c385ffbccc15f8491787470cb4a1bChris Lattner isConstant = !Features.WritableStrings; 1491a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar } 1492278b9f06933c385ffbccc15f8491787470cb4a1bChris Lattner 14931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalVariable *GV = 1494278b9f06933c385ffbccc15f8491787470cb4a1bChris Lattner new llvm::GlobalVariable(getModule(), C->getType(), isConstant, Linkage, C, 1495278b9f06933c385ffbccc15f8491787470cb4a1bChris Lattner ".str"); 1496a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar if (Sect) 14978e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar GV->setSection(Sect); 1498a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar if (isUTF16) { 1499a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar unsigned Align = getContext().getTypeAlign(getContext().ShortTy)/8; 15001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump GV->setAlignment(Align); 1501a9668e0b4c451a1021fe650c451b54dc98c2d18dDaniel Dunbar } 15025add6835b0c6b0f67e19fd5366825d3e41eb0dcfAnders Carlsson Fields[2] = llvm::ConstantExpr::getGetElementPtr(GV, Zeros, 2); 15035add6835b0c6b0f67e19fd5366825d3e41eb0dcfAnders Carlsson 1504c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // String length. 1505c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson Ty = getTypes().ConvertType(getContext().LongTy); 15065add6835b0c6b0f67e19fd5366825d3e41eb0dcfAnders Carlsson Fields[3] = llvm::ConstantInt::get(Ty, StringLength); 15071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1508c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // The struct. 150908e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson C = llvm::ConstantStruct::get(STy, Fields); 15101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump GV = new llvm::GlobalVariable(getModule(), C->getType(), true, 15111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalVariable::PrivateLinkage, C, 151295b851e55c328af4b69da7bfc1124bf258c0ffe5Chris Lattner "_unnamed_cfstring_"); 15138e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar if (const char *Sect = getContext().Target.getCFStringSection()) 15148e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar GV->setSection(Sect); 15151d5529132e4620562cab931c1f84c24e42f02741Daniel Dunbar Entry.setValue(GV); 15161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15170c67829763b98bc670062b553897a851fab17401Anders Carlsson return GV; 1518c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson} 151945e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 15206143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// GetStringForStringLiteral - Return the appropriate bytes for a 15211e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar/// string literal, properly padded to match the literal type. 15226143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbarstd::string CodeGenModule::GetStringForStringLiteral(const StringLiteral *E) { 15231e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar const char *StrData = E->getStrData(); 15241e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar unsigned Len = E->getByteLength(); 15251e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar 15261e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar const ConstantArrayType *CAT = 15271e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar getContext().getAsConstantArrayType(E->getType()); 15281e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar assert(CAT && "String isn't pointer or array!"); 15291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1530dbb1ecc32ca122b07b7c98fd0a8f6f53985adaccChris Lattner // Resize the string to the right size. 15311e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar std::string Str(StrData, StrData+Len); 15321e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar uint64_t RealLen = CAT->getSize().getZExtValue(); 15331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1534dbb1ecc32ca122b07b7c98fd0a8f6f53985adaccChris Lattner if (E->isWide()) 1535dbb1ecc32ca122b07b7c98fd0a8f6f53985adaccChris Lattner RealLen *= getContext().Target.getWCharWidth()/8; 15361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15371e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar Str.resize(RealLen, '\0'); 15381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15391e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar return Str; 15401e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar} 15411e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar 15426143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// GetAddrOfConstantStringFromLiteral - Return a pointer to a 15436143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// constant array for the given string literal. 15446143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbarllvm::Constant * 15456143293fa4366ee95d7e47e61bd030a34bf68b55Daniel DunbarCodeGenModule::GetAddrOfConstantStringFromLiteral(const StringLiteral *S) { 15466143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar // FIXME: This can be more efficient. 15476143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar return GetAddrOfConstantString(GetStringForStringLiteral(S)); 15486143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar} 15496143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar 1550eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner/// GetAddrOfConstantStringFromObjCEncode - Return a pointer to a constant 1551eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner/// array for the given ObjCEncodeExpr node. 1552eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattnerllvm::Constant * 1553eaf2bb89eb2aad3b80673de30febe52df43c10ecChris LattnerCodeGenModule::GetAddrOfConstantStringFromObjCEncode(const ObjCEncodeExpr *E) { 1554eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner std::string Str; 1555eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner getContext().getObjCEncodingForType(E->getEncodedType(), Str); 1556a210f350fa78c263caa26e0f999cce85bb235309Eli Friedman 1557a210f350fa78c263caa26e0f999cce85bb235309Eli Friedman return GetAddrOfConstantCString(Str); 1558eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner} 1559eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner 1560eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner 1561a7ad98ff0919d6a24ea7c46634ea29bea551c1a0Chris Lattner/// GenerateWritableString -- Creates storage for a string literal. 15621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpstatic llvm::Constant *GenerateStringLiteral(const std::string &str, 156345e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner bool constant, 15645fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar CodeGenModule &CGM, 15655fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar const char *GlobalName) { 15666143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar // Create Constant for this string literal. Don't add a '\0'. 15670032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Constant *C = 15680032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::ConstantArray::get(CGM.getLLVMContext(), str, false); 15691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 157045e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner // Create a global variable for this string 15711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return new llvm::GlobalVariable(CGM.getModule(), C->getType(), constant, 157295b851e55c328af4b69da7bfc1124bf258c0ffe5Chris Lattner llvm::GlobalValue::PrivateLinkage, 15731c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson C, GlobalName); 157445e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner} 157545e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 15766143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// GetAddrOfConstantString - Returns a pointer to a character array 15776143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// containing the literal. This contents are exactly that of the 15786143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// given string, i.e. it will not be null terminated automatically; 15796143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// see GetAddrOfConstantCString. Note that whether the result is 15806143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// actually a pointer to an LLVM constant depends on 15816143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// Feature.WriteableStrings. 15826143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// 15836143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// The result has pointer to array type. 15845fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbarllvm::Constant *CodeGenModule::GetAddrOfConstantString(const std::string &str, 15855fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar const char *GlobalName) { 15868e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar bool IsConstant = !Features.WritableStrings; 15878e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar 15888e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar // Get the default prefix if a name wasn't specified. 15898e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar if (!GlobalName) 159095b851e55c328af4b69da7bfc1124bf258c0ffe5Chris Lattner GlobalName = ".str"; 15918e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar 15928e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar // Don't share any string literals if strings aren't constant. 15938e5c2b8072f4409c7c0004331d1db9652d5209c0Daniel Dunbar if (!IsConstant) 15945fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar return GenerateStringLiteral(str, false, *this, GlobalName); 15951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::StringMapEntry<llvm::Constant *> &Entry = 159795b851e55c328af4b69da7bfc1124bf258c0ffe5Chris Lattner ConstantStringMap.GetOrCreateValue(&str[0], &str[str.length()]); 159845e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 159945e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner if (Entry.getValue()) 1600eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner return Entry.getValue(); 160145e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 160245e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner // Create a global variable for this. 16035fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar llvm::Constant *C = GenerateStringLiteral(str, true, *this, GlobalName); 160445e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner Entry.setValue(C); 160545e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner return C; 160645e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner} 16076143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar 16086143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// GetAddrOfConstantCString - Returns a pointer to a character 16096143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// array containing the literal and a terminating '\-' 16106143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// character. The result has pointer to array type. 16115fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbarllvm::Constant *CodeGenModule::GetAddrOfConstantCString(const std::string &str, 16125fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar const char *GlobalName){ 1613c9f29c61856ffb5f643cedbe87ac076f21a1381aChris Lattner return GetAddrOfConstantString(str + '\0', GlobalName); 16146143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar} 161541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 1616af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar/// EmitObjCPropertyImplementations - Emit information for synthesized 1617af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar/// properties for an implementation. 16181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpvoid CodeGenModule::EmitObjCPropertyImplementations(const 1619af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCImplementationDecl *D) { 16201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCImplementationDecl::propimpl_iterator 162117945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis i = D->propimpl_begin(), e = D->propimpl_end(); i != e; ++i) { 1622af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCPropertyImplDecl *PID = *i; 16231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1624af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // Dynamic is just for type-checking. 1625af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize) { 1626af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCPropertyDecl *PD = PID->getPropertyDecl(); 1627af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 1628af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // Determine which methods need to be implemented, some may have 1629af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // been overridden. Note that ::isSynthesized is not the method 1630af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // we want, that just indicates if the decl came from a 1631af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // property. What we want to know is if the method is defined in 1632af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // this implementation. 163317945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis if (!D->getInstanceMethod(PD->getGetterName())) 1634fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian CodeGenFunction(*this).GenerateObjCGetter( 1635fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian const_cast<ObjCImplementationDecl *>(D), PID); 1636af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar if (!PD->isReadOnly() && 163717945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis !D->getInstanceMethod(PD->getSetterName())) 1638fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian CodeGenFunction(*this).GenerateObjCSetter( 1639fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian const_cast<ObjCImplementationDecl *>(D), PID); 1640af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar } 1641af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar } 1642af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar} 1643af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 164491e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson/// EmitNamespace - Emit all declarations in a namespace. 1645984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlssonvoid CodeGenModule::EmitNamespace(const NamespaceDecl *ND) { 164617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (RecordDecl::decl_iterator I = ND->decls_begin(), E = ND->decls_end(); 1647984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlsson I != E; ++I) 1648984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlsson EmitTopLevelDecl(*I); 1649984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlsson} 1650984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlsson 165191e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson// EmitLinkageSpec - Emit all declarations in a linkage spec. 165291e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlssonvoid CodeGenModule::EmitLinkageSpec(const LinkageSpecDecl *LSD) { 1653f976be8a63f9e0d3bd50e33dadef02c3c9921747Eli Friedman if (LSD->getLanguage() != LinkageSpecDecl::lang_c && 1654f976be8a63f9e0d3bd50e33dadef02c3c9921747Eli Friedman LSD->getLanguage() != LinkageSpecDecl::lang_cxx) { 165591e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson ErrorUnsupported(LSD, "linkage spec"); 165691e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson return; 165791e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson } 165891e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson 165917945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (RecordDecl::decl_iterator I = LSD->decls_begin(), E = LSD->decls_end(); 166091e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson I != E; ++I) 166191e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson EmitTopLevelDecl(*I); 166291e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson} 166391e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson 166441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar/// EmitTopLevelDecl - Emit code for a single top level declaration. 166541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbarvoid CodeGenModule::EmitTopLevelDecl(Decl *D) { 166641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // If an error has occurred, stop code generation, but continue 166741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // parsing and semantic analysis (to ensure all warnings and errors 166841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // are emitted). 166941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar if (Diags.hasErrorOccurred()) 167041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar return; 167141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 167216e8be2ac532358d4e413fdfa2643b1876edda78Douglas Gregor // Ignore dependent declarations. 167316e8be2ac532358d4e413fdfa2643b1876edda78Douglas Gregor if (D->getDeclContext() && D->getDeclContext()->isDependentContext()) 167416e8be2ac532358d4e413fdfa2643b1876edda78Douglas Gregor return; 16751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 167641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar switch (D->getKind()) { 1677293361afd4199c92aabff9267fddea890943c586Anders Carlsson case Decl::CXXConversion: 16782b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson case Decl::CXXMethod: 167941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::Function: 168016e8be2ac532358d4e413fdfa2643b1876edda78Douglas Gregor // Skip function templates 168116e8be2ac532358d4e413fdfa2643b1876edda78Douglas Gregor if (cast<FunctionDecl>(D)->getDescribedFunctionTemplate()) 168216e8be2ac532358d4e413fdfa2643b1876edda78Douglas Gregor return; 16831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1684555b4bb2749aea2ec8e2adc351a71ec1cb9bdc33Anders Carlsson EmitGlobal(cast<FunctionDecl>(D)); 1685555b4bb2749aea2ec8e2adc351a71ec1cb9bdc33Anders Carlsson break; 1686555b4bb2749aea2ec8e2adc351a71ec1cb9bdc33Anders Carlsson 168741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::Var: 1688555b4bb2749aea2ec8e2adc351a71ec1cb9bdc33Anders Carlsson EmitGlobal(cast<VarDecl>(D)); 168941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 169041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 169195d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson // C++ Decls 169241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::Namespace: 1693984e06874685396ca2cb51f0008cfff7c9b3d9c6Anders Carlsson EmitNamespace(cast<NamespaceDecl>(D)); 169441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 16959cfbe48a7a20a217fdb2920b29b67ae7941cb116Douglas Gregor // No code generation needed. 16969cfbe48a7a20a217fdb2920b29b67ae7941cb116Douglas Gregor case Decl::Using: 1697dd9967a6374c9a44be4af02aaeee340ffb82848fDouglas Gregor case Decl::UsingDirective: 1698127102b5196ffe04bdb70fd553fe62c265ab10a9Douglas Gregor case Decl::ClassTemplate: 1699127102b5196ffe04bdb70fd553fe62c265ab10a9Douglas Gregor case Decl::FunctionTemplate: 1700018837b081bd1a725bae1c020eb1649975b04d67Anders Carlsson case Decl::NamespaceAlias: 17019cfbe48a7a20a217fdb2920b29b67ae7941cb116Douglas Gregor break; 170295d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson case Decl::CXXConstructor: 170395d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson EmitCXXConstructors(cast<CXXConstructorDecl>(D)); 170495d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson break; 170527ae53665f8b00fe4ba21da0fa79a4ce6e0b6cd5Anders Carlsson case Decl::CXXDestructor: 170627ae53665f8b00fe4ba21da0fa79a4ce6e0b6cd5Anders Carlsson EmitCXXDestructors(cast<CXXDestructorDecl>(D)); 170727ae53665f8b00fe4ba21da0fa79a4ce6e0b6cd5Anders Carlsson break; 170836674d2978eb53962218ac67bb4d352cc287ea05Anders Carlsson 170936674d2978eb53962218ac67bb4d352cc287ea05Anders Carlsson case Decl::StaticAssert: 171036674d2978eb53962218ac67bb4d352cc287ea05Anders Carlsson // Nothing to do. 171136674d2978eb53962218ac67bb4d352cc287ea05Anders Carlsson break; 171236674d2978eb53962218ac67bb4d352cc287ea05Anders Carlsson 171395d4e5d2f87a0f07fb143ccb824dfc4c5c595c78Anders Carlsson // Objective-C Decls 17141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 171538e24c782c17b6058bf61d635747bbde19fb1bc7Fariborz Jahanian // Forward declarations, no (immediate) code generation. 171641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCClass: 171741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCForwardProtocol: 1718b31cb7f1752ea011fd06ac9574ce24667d11cbdbFariborz Jahanian case Decl::ObjCCategory: 1719b31cb7f1752ea011fd06ac9574ce24667d11cbdbFariborz Jahanian case Decl::ObjCInterface: 172041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 1721285d0dba947b7c9960eaa88e8c4fced0398d4319Chris Lattner 172241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCProtocol: 1723b31cb7f1752ea011fd06ac9574ce24667d11cbdbFariborz Jahanian Runtime->GenerateProtocol(cast<ObjCProtocolDecl>(D)); 172441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 172541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 172641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCCategoryImpl: 1727af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // Categories have properties but don't support synthesize so we 1728af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // can ignore them here. 172941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar Runtime->GenerateCategory(cast<ObjCCategoryImplDecl>(D)); 173041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 173141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 1732af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar case Decl::ObjCImplementation: { 1733af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCImplementationDecl *OMD = cast<ObjCImplementationDecl>(D); 1734af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar EmitObjCPropertyImplementations(OMD); 1735af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar Runtime->GenerateClass(OMD); 173641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 17371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 173841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCMethod: { 173941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar ObjCMethodDecl *OMD = cast<ObjCMethodDecl>(D); 174041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // If this is not a prototype, emit the body. 17416fb0aee4f9dc261bbec72e1283ad8dc0557a6d96Argyrios Kyrtzidis if (OMD->getBody()) 174241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar CodeGenFunction(*this).GenerateObjCMethod(OMD); 174341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 174441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar } 17451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump case Decl::ObjCCompatibleAlias: 1746305c658ebce84bb9833fc0e7675554656453b8e8Fariborz Jahanian // compatibility-alias is a directive and has no code gen. 174741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 174841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 174991e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson case Decl::LinkageSpec: 175091e20dd8bf1bc8980ee93839383d2bd170bce050Anders Carlsson EmitLinkageSpec(cast<LinkageSpecDecl>(D)); 175141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 175241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 175341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::FileScopeAsm: { 175441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar FileScopeAsmDecl *AD = cast<FileScopeAsmDecl>(D); 175541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar std::string AsmString(AD->getAsmString()->getStrData(), 175641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar AD->getAsmString()->getByteLength()); 17571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 175841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar const std::string &S = getModule().getModuleInlineAsm(); 175941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar if (S.empty()) 176041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar getModule().setModuleInlineAsm(AsmString); 176141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar else 176241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar getModule().setModuleInlineAsm(S + '\n' + AsmString); 176341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 176441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar } 17651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump default: 1767f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump // Make sure we handled everything we should, every other kind is a 1768f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump // non-top-level decl. FIXME: Would be nice to have an isTopLevelDeclKind 1769f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump // function. Need to recode Decl::Kind to do that easily. 177041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar assert(isa<TypeDecl>(D) && "Unsupported decl kind"); 177141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar } 177241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar} 1773