CodeGenModule.cpp revision dbb1ecc32ca122b07b7c98fd0a8f6f53985adacc
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 14e8b9f5b8ea60983c4a74cb8b63879616b914b65aSanjiv Gupta#include "CGDebugInfo.h" 155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "CodeGenModule.h" 165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "CodeGenFunction.h" 170dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar#include "CGCall.h" 18af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar#include "CGObjCRuntime.h" 195f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor#include "Mangle.h" 205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/AST/ASTContext.h" 21c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar#include "clang/AST/DeclObjC.h" 2221ef7ae45c8b91f23cf5eab2263421bb398a644bChris Lattner#include "clang/AST/DeclCXX.h" 232c8569d5f43f7de1fb993e84c95ea571dd9ac55eChris Lattner#include "clang/Basic/Diagnostic.h" 248bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman#include "clang/Basic/SourceManager.h" 255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Basic/TargetInfo.h" 26ec9426ca6039279bcc99bc2c625bb2abe4f0353dNate Begeman#include "llvm/CallingConv.h" 27bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner#include "llvm/Module.h" 285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "llvm/Intrinsics.h" 2920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov#include "llvm/Target/TargetData.h" 305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerusing namespace clang; 315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerusing namespace CodeGen; 325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3445e8cbdce25c2e16c7aac2036a591f6190097ae6Chris LattnerCodeGenModule::CodeGenModule(ASTContext &C, const LangOptions &LO, 35fb97b03e42d397405f617be0252be83e77a66f6eChris Lattner llvm::Module &M, const llvm::TargetData &TD, 36f77ac86f4eca528a04b817d7ad7f045a47d52712Daniel Dunbar Diagnostic &diags, bool GenerateDebugInfo) 37fb97b03e42d397405f617be0252be83e77a66f6eChris Lattner : Context(C), Features(LO), TheModule(M), TheTargetData(TD), Diags(diags), 38208ff5e8a073de2a5d15cbe03cab8a4c0d935e28Daniel Dunbar Types(C, M, TD), Runtime(0), MemCpyFn(0), MemMoveFn(0), MemSetFn(0), 39ab695143861b520f5c9f8f982534a71d355396f1Mike Stump CFConstantStringClassRef(0), NSConcreteGlobalBlock(0), 409b8a7977109604d573b49d517e98badbbb9d5ac7Mike Stump BlockDescriptorType(0), GenericBlockLiteralType(0) { 41208ff5e8a073de2a5d15cbe03cab8a4c0d935e28Daniel Dunbar 42208ff5e8a073de2a5d15cbe03cab8a4c0d935e28Daniel Dunbar if (Features.ObjC1) { 43f77ac86f4eca528a04b817d7ad7f045a47d52712Daniel Dunbar if (Features.NeXTRuntime) { 4430bc57187be7535c57ef1ca8ff3e765653e94332Fariborz Jahanian Runtime = Features.ObjCNonFragileABI ? CreateMacNonFragileABIObjCRuntime(*this) 45ee0af74d1e0990c7b66d32657f3e4e54b8691552Fariborz Jahanian : CreateMacObjCRuntime(*this); 46208ff5e8a073de2a5d15cbe03cab8a4c0d935e28Daniel Dunbar } else { 47208ff5e8a073de2a5d15cbe03cab8a4c0d935e28Daniel Dunbar Runtime = CreateGNUObjCRuntime(*this); 48208ff5e8a073de2a5d15cbe03cab8a4c0d935e28Daniel Dunbar } 49c17a4d3b16a2624a76de5d7508805534545bd3bfDaniel Dunbar } 50e8b9f5b8ea60983c4a74cb8b63879616b914b65aSanjiv Gupta 51e8b9f5b8ea60983c4a74cb8b63879616b914b65aSanjiv Gupta // If debug info generation is enabled, create the CGDebugInfo object. 5226efc3388adb010984da2f70e1f24e8286e6476dMike Stump DebugInfo = GenerateDebugInfo ? new CGDebugInfo(this) : 0; 5326efc3388adb010984da2f70e1f24e8286e6476dMike Stump 5426efc3388adb010984da2f70e1f24e8286e6476dMike Stump Block.GlobalUniqueCount = 0; 552b94fe35edf951a14ecd32b21f7ebcc2e3754c67Chris Lattner} 562b94fe35edf951a14ecd32b21f7ebcc2e3754c67Chris Lattner 572b94fe35edf951a14ecd32b21f7ebcc2e3754c67Chris LattnerCodeGenModule::~CodeGenModule() { 58815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenek delete Runtime; 59815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenek delete DebugInfo; 60815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenek} 61815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenek 62815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenekvoid CodeGenModule::Release() { 630269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar EmitDeferred(); 64219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar EmitAliases(); 65208ff5e8a073de2a5d15cbe03cab8a4c0d935e28Daniel Dunbar if (Runtime) 66208ff5e8a073de2a5d15cbe03cab8a4c0d935e28Daniel Dunbar if (llvm::Function *ObjCInitFunction = Runtime->ModuleInitFunction()) 67208ff5e8a073de2a5d15cbe03cab8a4c0d935e28Daniel Dunbar AddGlobalCtor(ObjCInitFunction); 686bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar EmitCtorList(GlobalCtors, "llvm.global_ctors"); 696bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar EmitCtorList(GlobalDtors, "llvm.global_dtors"); 70532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman EmitAnnotations(); 710269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar EmitLLVMUsed(); 72f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar BindRuntimeFunctions(); 732b94fe35edf951a14ecd32b21f7ebcc2e3754c67Chris Lattner} 745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 75f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbarvoid CodeGenModule::BindRuntimeFunctions() { 76f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar // Deal with protecting runtime function names. 77f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar for (unsigned i = 0, e = RuntimeFunctions.size(); i < e; ++i) { 78f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar llvm::Function *Fn = RuntimeFunctions[i].first; 79f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar const std::string &Name = RuntimeFunctions[i].second; 80f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar 810293d540baafbe070c1035611787a81001a4118eDaniel Dunbar // Discard unused runtime functions. 820293d540baafbe070c1035611787a81001a4118eDaniel Dunbar if (Fn->use_empty()) { 830293d540baafbe070c1035611787a81001a4118eDaniel Dunbar Fn->eraseFromParent(); 840293d540baafbe070c1035611787a81001a4118eDaniel Dunbar continue; 850293d540baafbe070c1035611787a81001a4118eDaniel Dunbar } 860293d540baafbe070c1035611787a81001a4118eDaniel Dunbar 87f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar // See if there is a conflict against a function. 88f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar llvm::Function *Conflict = TheModule.getFunction(Name); 89f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar if (Conflict) { 90f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar // Decide which version to take. If the conflict is a definition 91f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar // we are forced to take that, otherwise assume the runtime 92f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar // knows best. 93f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar if (!Conflict->isDeclaration()) { 94f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar llvm::Value *Casted = 95f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar llvm::ConstantExpr::getBitCast(Conflict, Fn->getType()); 96f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar Fn->replaceAllUsesWith(Casted); 97f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar Fn->eraseFromParent(); 98f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar } else { 99f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar Fn->takeName(Conflict); 100f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar llvm::Value *Casted = 101f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar llvm::ConstantExpr::getBitCast(Fn, Conflict->getType()); 102f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar Conflict->replaceAllUsesWith(Casted); 103f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar Conflict->eraseFromParent(); 104f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar } 105f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar } else { 106f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar // FIXME: There still may be conflicts with aliases and 107f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar // variables. 108f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar Fn->setName(Name); 109f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar } 110f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar } 111f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar} 112f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar 113488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar/// ErrorUnsupported - Print out an error that codegen doesn't support the 1142c8569d5f43f7de1fb993e84c95ea571dd9ac55eChris Lattner/// specified stmt yet. 11590df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbarvoid CodeGenModule::ErrorUnsupported(const Stmt *S, const char *Type, 11690df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar bool OmitOnError) { 11790df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar if (OmitOnError && getDiags().hasErrorOccurred()) 11890df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar return; 119488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar unsigned DiagID = getDiags().getCustomDiagID(Diagnostic::Error, 12056b8001b42bd603ef593e3cb278d8b9b9ba26ca9Daniel Dunbar "cannot compile this %0 yet"); 1212c8569d5f43f7de1fb993e84c95ea571dd9ac55eChris Lattner std::string Msg = Type; 1220a14eee528a901c16f0e288fbc10a3abc1660d87Chris Lattner getDiags().Report(Context.getFullLoc(S->getLocStart()), DiagID) 1230a14eee528a901c16f0e288fbc10a3abc1660d87Chris Lattner << Msg << S->getSourceRange(); 1242c8569d5f43f7de1fb993e84c95ea571dd9ac55eChris Lattner} 12558c3f9ec11cbe852a518bf2f83af46f938b7b852Chris Lattner 126488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar/// ErrorUnsupported - Print out an error that codegen doesn't support the 127c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner/// specified decl yet. 12890df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbarvoid CodeGenModule::ErrorUnsupported(const Decl *D, const char *Type, 12990df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar bool OmitOnError) { 13090df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar if (OmitOnError && getDiags().hasErrorOccurred()) 13190df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar return; 132488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar unsigned DiagID = getDiags().getCustomDiagID(Diagnostic::Error, 13356b8001b42bd603ef593e3cb278d8b9b9ba26ca9Daniel Dunbar "cannot compile this %0 yet"); 134c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner std::string Msg = Type; 1350a14eee528a901c16f0e288fbc10a3abc1660d87Chris Lattner getDiags().Report(Context.getFullLoc(D->getLocation()), DiagID) << Msg; 136c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner} 137c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner 13841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar/// setGlobalVisibility - Set the visibility for the given LLVM 13941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar/// GlobalValue according to the given clang AST visibility value. 14041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbarstatic void setGlobalVisibility(llvm::GlobalValue *GV, 14141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar VisibilityAttr::VisibilityTypes Vis) { 1424f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman switch (Vis) { 1434f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman default: assert(0 && "Unknown visibility!"); 1444f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman case VisibilityAttr::DefaultVisibility: 1454f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman GV->setVisibility(llvm::GlobalValue::DefaultVisibility); 1464f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman break; 1474f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman case VisibilityAttr::HiddenVisibility: 1484f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman GV->setVisibility(llvm::GlobalValue::HiddenVisibility); 1494f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman break; 1504f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman case VisibilityAttr::ProtectedVisibility: 1514f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman GV->setVisibility(llvm::GlobalValue::ProtectedVisibility); 1524f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman break; 1534f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman } 1544f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman} 1554f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman 1565f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// \brief Retrieves the mangled name for the given declaration. 1575f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// 1585f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// If the given declaration requires a mangled name, returns an 1595f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// IdentifierInfo* containing the mangled name. Otherwise, returns 1605f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// the name of the declaration as an identifier. 1615f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// 1625f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// FIXME: Returning an IdentifierInfo* here is a total hack. We 1635f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// really need some kind of string abstraction that either stores a 1645f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// mangled name or stores an IdentifierInfo*. This will require 165b5da3e94b72a0106abd69c2a84bf650e773fa4acDaniel Dunbar/// changes to the GlobalDeclMap, too. (I disagree, I think what we 166b5da3e94b72a0106abd69c2a84bf650e773fa4acDaniel Dunbar/// actually need is for Sema to provide some notion of which Decls 167b5da3e94b72a0106abd69c2a84bf650e773fa4acDaniel Dunbar/// refer to the same semantic decl. We shouldn't need to mangle the 168b5da3e94b72a0106abd69c2a84bf650e773fa4acDaniel Dunbar/// names and see what comes out the same to figure this out. - DWD) 1695f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// 1705f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// FIXME: Performance here is going to be terribly until we start 1715f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// caching mangled names. However, we should fix the problem above 1725f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// first. 1736ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregorconst char *CodeGenModule::getMangledName(const NamedDecl *ND) { 1746ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregor llvm::SmallString<256> Name; 1756ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregor llvm::raw_svector_ostream Out(Name); 1765f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor if (!mangleName(ND, Context, Out)) 1776ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregor return ND->getIdentifier()->getName(); 1785f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor 1796ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregor Name += '\0'; 1806ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregor return MangledNames.GetOrCreateValue(Name.begin(), Name.end()) 1816ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregor .getKeyData(); 1825f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor} 1835f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor 1846d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner/// AddGlobalCtor - Add a function to the list that will be called before 1856d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner/// main() runs. 1866bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbarvoid CodeGenModule::AddGlobalCtor(llvm::Function * Ctor, int Priority) { 18749988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // FIXME: Type coercion of void()* types. 1886bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar GlobalCtors.push_back(std::make_pair(Ctor, Priority)); 1896d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner} 1906d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner 1916bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar/// AddGlobalDtor - Add a function to the list that will be called 1926bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar/// when the module is unloaded. 1936bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbarvoid CodeGenModule::AddGlobalDtor(llvm::Function * Dtor, int Priority) { 19449988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // FIXME: Type coercion of void()* types. 1956bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar GlobalDtors.push_back(std::make_pair(Dtor, Priority)); 1966bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar} 1976bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar 1986bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbarvoid CodeGenModule::EmitCtorList(const CtorList &Fns, const char *GlobalName) { 1996bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar // Ctor function type is void()*. 2006bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar llvm::FunctionType* CtorFTy = 2016bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar llvm::FunctionType::get(llvm::Type::VoidTy, 2026bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar std::vector<const llvm::Type*>(), 2036bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar false); 2046bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar llvm::Type *CtorPFTy = llvm::PointerType::getUnqual(CtorFTy); 2056bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar 2066bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar // Get the type of a ctor entry, { i32, void ()* }. 207572cf09ae8a78af1c56d40b016ec4cf1837163acChris Lattner llvm::StructType* CtorStructTy = 2086bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar llvm::StructType::get(llvm::Type::Int32Ty, 2096bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar llvm::PointerType::getUnqual(CtorFTy), NULL); 2106bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar 2116bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar // Construct the constructor and destructor arrays. 2126bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar std::vector<llvm::Constant*> Ctors; 2136bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar for (CtorList::const_iterator I = Fns.begin(), E = Fns.end(); I != E; ++I) { 2146bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar std::vector<llvm::Constant*> S; 2156bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar S.push_back(llvm::ConstantInt::get(llvm::Type::Int32Ty, I->second, false)); 2166bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar S.push_back(llvm::ConstantExpr::getBitCast(I->first, CtorPFTy)); 2176bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar Ctors.push_back(llvm::ConstantStruct::get(CtorStructTy, S)); 2186bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar } 2196bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar 2206bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar if (!Ctors.empty()) { 2216bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar llvm::ArrayType *AT = llvm::ArrayType::get(CtorStructTy, Ctors.size()); 2226bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar new llvm::GlobalVariable(AT, false, 223572cf09ae8a78af1c56d40b016ec4cf1837163acChris Lattner llvm::GlobalValue::AppendingLinkage, 2246bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar llvm::ConstantArray::get(AT, Ctors), 2256bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar GlobalName, 226572cf09ae8a78af1c56d40b016ec4cf1837163acChris Lattner &TheModule); 2276d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner } 2286d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner} 2296d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner 230532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begemanvoid CodeGenModule::EmitAnnotations() { 231532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman if (Annotations.empty()) 232532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman return; 233532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman 234532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman // Create a new global variable for the ConstantStruct in the Module. 235532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman llvm::Constant *Array = 236532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman llvm::ConstantArray::get(llvm::ArrayType::get(Annotations[0]->getType(), 237532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman Annotations.size()), 238532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman Annotations); 239532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman llvm::GlobalValue *gv = 240532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman new llvm::GlobalVariable(Array->getType(), false, 241532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman llvm::GlobalValue::AppendingLinkage, Array, 242532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman "llvm.global.annotations", &TheModule); 243532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman gv->setSection("llvm.metadata"); 244532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman} 245532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman 2465c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbarvoid CodeGenModule::SetGlobalValueAttributes(const Decl *D, 2475c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar bool IsInternal, 2485c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar bool IsInline, 2495c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar llvm::GlobalValue *GV, 2505c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar bool ForDefinition) { 25149988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // FIXME: Set up linkage and many other things. Note, this is a simple 252d4cbda6292b321c2e7dce7f039d92918fee99b3aNuno Lopes // approximation of what we really want. 253219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar if (!ForDefinition) { 254219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar // Only a few attributes are set on declarations. 2552f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov if (D->getAttr<DLLImportAttr>()) { 2562f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov // The dllimport attribute is overridden by a subsequent declaration as 2572f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov // dllexport. 2583ef5db646a6f66bb23146c3e506c294f31adf018Sebastian Redl if (!D->getAttr<DLLExportAttr>()) { 2592f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov // dllimport attribute can be applied only to function decls, not to 2602f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov // definitions. 2612f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 2622f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov if (!FD->getBody()) 2632f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov GV->setLinkage(llvm::Function::DLLImportLinkage); 2642f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov } else 2652f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov GV->setLinkage(llvm::Function::DLLImportLinkage); 2663ef5db646a6f66bb23146c3e506c294f31adf018Sebastian Redl } 267eda9a5ec380f172f4e0063744eb796144a125480Daniel Dunbar } else if (D->getAttr<WeakAttr>()) 268eda9a5ec380f172f4e0063744eb796144a125480Daniel Dunbar GV->setLinkage(llvm::Function::ExternalWeakLinkage); 269219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar } else { 270219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar if (IsInternal) { 271219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar GV->setLinkage(llvm::Function::InternalLinkage); 272219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar } else { 2732f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov if (D->getAttr<DLLExportAttr>()) { 2742f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 2752f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov // The dllexport attribute is ignored for undefined symbols. 2762f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov if (FD->getBody()) 2772f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov GV->setLinkage(llvm::Function::DLLExportLinkage); 2782f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov } else 2792f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov GV->setLinkage(llvm::Function::DLLExportLinkage); 2802f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov } else if (D->getAttr<WeakAttr>() || IsInline) 281219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar GV->setLinkage(llvm::Function::WeakLinkage); 282219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar } 2830dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar } 284d4cbda6292b321c2e7dce7f039d92918fee99b3aNuno Lopes 28549988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // FIXME: Figure out the relative priority of the attribute, 28649988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // -fvisibility, and private_extern. 2870dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar if (const VisibilityAttr *attr = D->getAttr<VisibilityAttr>()) 28841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar setGlobalVisibility(GV, attr->getVisibility()); 289d4cbda6292b321c2e7dce7f039d92918fee99b3aNuno Lopes // FIXME: else handle -fvisibility 290a735ad8be5536a1cd3e9817ec27dfeb2a0c1d5caDaniel Dunbar 291eda9a5ec380f172f4e0063744eb796144a125480Daniel Dunbar // Prefaced with special LLVM marker to indicate that the name 292eda9a5ec380f172f4e0063744eb796144a125480Daniel Dunbar // should not be munged. 293eda9a5ec380f172f4e0063744eb796144a125480Daniel Dunbar if (const AsmLabelAttr *ALA = D->getAttr<AsmLabelAttr>()) 294a735ad8be5536a1cd3e9817ec27dfeb2a0c1d5caDaniel Dunbar GV->setName("\01" + ALA->getLabel()); 29517f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar 29617f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar if (const SectionAttr *SA = D->getAttr<SectionAttr>()) 29717f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar GV->setSection(SA->getName()); 2985c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar 2995c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar // Only add to llvm.used when we see a definition, otherwise we 3005c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar // might add multiple times or risk the value being replaced by a 3015c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar // subsequent RAUW. 3025c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar if (ForDefinition) { 3035c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar if (D->getAttr<UsedAttr>()) 3045c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar AddUsedGlobal(GV); 3055c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar } 306d4cbda6292b321c2e7dce7f039d92918fee99b3aNuno Lopes} 307d4cbda6292b321c2e7dce7f039d92918fee99b3aNuno Lopes 308761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patelvoid CodeGenModule::SetFunctionAttributes(const Decl *D, 30945c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar const CGFunctionInfo &Info, 310b768807c49a1c7085def099b848631856af766faDaniel Dunbar llvm::Function *F) { 311761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patel AttributeListType AttributeList; 31288b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar ConstructAttributeList(Info, D, AttributeList); 313c134fcb0d7989fe6937e47e6216637647e074aefEli Friedman 314761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patel F->setAttributes(llvm::AttrListPtr::get(AttributeList.begin(), 315761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patel AttributeList.size())); 316ff4a2d9e2c1ddbf87e00e2a36ae341faf03eafb3Eli Friedman 317ff4a2d9e2c1ddbf87e00e2a36ae341faf03eafb3Eli Friedman // Set the appropriate calling convention for the Function. 31845c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar if (D->getAttr<FastCallAttr>()) 319f1c9c09e2e2220e4bbfb7e9d8adf9bf2c2406b80Anton Korobeynikov F->setCallingConv(llvm::CallingConv::X86_FastCall); 320f1c9c09e2e2220e4bbfb7e9d8adf9bf2c2406b80Anton Korobeynikov 321f1c9c09e2e2220e4bbfb7e9d8adf9bf2c2406b80Anton Korobeynikov if (D->getAttr<StdCallAttr>()) 322f1c9c09e2e2220e4bbfb7e9d8adf9bf2c2406b80Anton Korobeynikov F->setCallingConv(llvm::CallingConv::X86_StdCall); 323f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar} 324f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar 325f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar/// SetFunctionAttributesForDefinition - Set function attributes 326f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar/// specific to a function definition. 327219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbarvoid CodeGenModule::SetFunctionAttributesForDefinition(const Decl *D, 328219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar llvm::Function *F) { 329219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar if (isa<ObjCMethodDecl>(D)) { 330219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar SetGlobalValueAttributes(D, true, false, F, true); 331219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar } else { 332219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar const FunctionDecl *FD = cast<FunctionDecl>(D); 333219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar SetGlobalValueAttributes(FD, FD->getStorageClass() == FunctionDecl::Static, 334219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar FD->isInline(), F, true); 335219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar } 336219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 337f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar if (!Features.Exceptions) 338f93349f3ec4d69eafba42436c33aaa91bfca7e70Daniel Dunbar F->addFnAttr(llvm::Attribute::NoUnwind); 339af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar 340af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar if (D->getAttr<AlwaysInlineAttr>()) 341af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar F->addFnAttr(llvm::Attribute::AlwaysInline); 34281ebbde0fb30a40df0f5e913d8a1f71c383d271aAnders Carlsson 34381ebbde0fb30a40df0f5e913d8a1f71c383d271aAnders Carlsson if (D->getAttr<NoinlineAttr>()) 34481ebbde0fb30a40df0f5e913d8a1f71c383d271aAnders Carlsson F->addFnAttr(llvm::Attribute::NoInline); 345f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar} 346f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar 347f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbarvoid CodeGenModule::SetMethodAttributes(const ObjCMethodDecl *MD, 348f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar llvm::Function *F) { 349541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar SetFunctionAttributes(MD, getTypes().getFunctionInfo(MD), F); 350f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar 351219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar SetFunctionAttributesForDefinition(MD, F); 352f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar} 353f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar 354f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbarvoid CodeGenModule::SetFunctionAttributes(const FunctionDecl *FD, 355f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar llvm::Function *F) { 356541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar SetFunctionAttributes(FD, getTypes().getFunctionInfo(FD), F); 35745c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar 358219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar SetGlobalValueAttributes(FD, FD->getStorageClass() == FunctionDecl::Static, 359219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar FD->isInline(), F, false); 360219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar} 361219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 36245c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar 363219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbarvoid CodeGenModule::EmitAliases() { 364219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar for (unsigned i = 0, e = Aliases.size(); i != e; ++i) { 365219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar const FunctionDecl *D = Aliases[i]; 366219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar const AliasAttr *AA = D->getAttr<AliasAttr>(); 367219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 368219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar // This is something of a hack, if the FunctionDecl got overridden 369219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar // then its attributes will be moved to the new declaration. In 370219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar // this case the current decl has no alias attribute, but we will 371219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar // eventually see it. 372219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar if (!AA) 373219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar continue; 374219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 375219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar const std::string& aliaseeName = AA->getAliasee(); 376219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar llvm::Function *aliasee = getModule().getFunction(aliaseeName); 377219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar if (!aliasee) { 378219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar // FIXME: This isn't unsupported, this is just an error, which 379219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar // sema should catch, but... 380219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar ErrorUnsupported(D, "alias referencing a missing function"); 381219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar continue; 382219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar } 383219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 384219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar llvm::GlobalValue *GA = 385219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar new llvm::GlobalAlias(aliasee->getType(), 386219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar llvm::Function::ExternalLinkage, 3876ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregor getMangledName(D), aliasee, 3885f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor &getModule()); 389219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 3905f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor llvm::GlobalValue *&Entry = GlobalDeclMap[getMangledName(D)]; 391219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar if (Entry) { 392219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar // If we created a dummy function for this then replace it. 393219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar GA->takeName(Entry); 394219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 395219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar llvm::Value *Casted = 396219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar llvm::ConstantExpr::getBitCast(GA, Entry->getType()); 397219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar Entry->replaceAllUsesWith(Casted); 398219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar Entry->eraseFromParent(); 399ff4a2d9e2c1ddbf87e00e2a36ae341faf03eafb3Eli Friedman 400219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar Entry = GA; 401219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar } 402219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 403219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar // Alias should never be internal or inline. 404219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar SetGlobalValueAttributes(D, false, false, GA, true); 405219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar } 406ff4a2d9e2c1ddbf87e00e2a36ae341faf03eafb3Eli Friedman} 407ff4a2d9e2c1ddbf87e00e2a36ae341faf03eafb3Eli Friedman 4080269871c9cba493f76237175ab60313406f3bafaDaniel Dunbarvoid CodeGenModule::AddUsedGlobal(llvm::GlobalValue *GV) { 4090269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar assert(!GV->isDeclaration() && 4100269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar "Only globals with definition can force usage."); 4110269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar llvm::Type *i8PTy = llvm::PointerType::getUnqual(llvm::Type::Int8Ty); 4120269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar LLVMUsed.push_back(llvm::ConstantExpr::getBitCast(GV, i8PTy)); 4130269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar} 4140269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar 4150269871c9cba493f76237175ab60313406f3bafaDaniel Dunbarvoid CodeGenModule::EmitLLVMUsed() { 4160269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar // Don't create llvm.used if there is no need. 4170269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar if (LLVMUsed.empty()) 4180269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar return; 4190269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar 4200269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar llvm::ArrayType *ATy = llvm::ArrayType::get(LLVMUsed[0]->getType(), 4210269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar LLVMUsed.size()); 4220269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar llvm::GlobalVariable *GV = 4230269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar new llvm::GlobalVariable(ATy, false, 4240269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar llvm::GlobalValue::AppendingLinkage, 4250269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar llvm::ConstantArray::get(ATy, LLVMUsed), 4260269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar "llvm.used", &getModule()); 4270269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar 4280269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar GV->setSection("llvm.metadata"); 4290269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar} 4300269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar 4310269871c9cba493f76237175ab60313406f3bafaDaniel Dunbarvoid CodeGenModule::EmitDeferred() { 4320269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar // Emit code for any deferred decl which was used. Since a 4330269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar // previously unused static decl may become used during the 4340269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar // generation of code for a static function, iterate until no 4350269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar // changes are made. 4364c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman bool Changed; 4374c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman do { 4384c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman Changed = false; 439b723f7520bcce5f13ccaae557c16a1e7133b6908Anders Carlsson 4400269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar for (std::list<const ValueDecl*>::iterator i = DeferredDecls.begin(), 4410269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar e = DeferredDecls.end(); i != e; ) { 442b723f7520bcce5f13ccaae557c16a1e7133b6908Anders Carlsson const ValueDecl *D = *i; 443b723f7520bcce5f13ccaae557c16a1e7133b6908Anders Carlsson 4446f7e2eee917a136ffc36834f020782b3f15d8fa6Eli Friedman // Check if we have used a decl with the same name 4456f7e2eee917a136ffc36834f020782b3f15d8fa6Eli Friedman // FIXME: The AST should have some sort of aggregate decls or 4466f7e2eee917a136ffc36834f020782b3f15d8fa6Eli Friedman // global symbol map. 447219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar // FIXME: This is missing some important cases. For example, we 44873241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar // need to check for uses in an alias. 4495f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor if (!GlobalDeclMap.count(getMangledName(D))) { 450232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar ++i; 451a735ad8be5536a1cd3e9817ec27dfeb2a0c1d5caDaniel Dunbar continue; 452b723f7520bcce5f13ccaae557c16a1e7133b6908Anders Carlsson } 453b723f7520bcce5f13ccaae557c16a1e7133b6908Anders Carlsson 454bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar // Emit the definition. 455bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar EmitGlobalDefinition(D); 456bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 4574c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman // Erase the used decl from the list. 4580269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar i = DeferredDecls.erase(i); 459b723f7520bcce5f13ccaae557c16a1e7133b6908Anders Carlsson 4604c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman // Remember that we made a change. 4614c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman Changed = true; 4624c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman } 4634c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman } while (Changed); 4645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 4655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 4668bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// EmitAnnotateAttr - Generate the llvm::ConstantStruct which contains the 4678bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// annotation information for a given GlobalValue. The annotation struct is 4688bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// {i8 *, i8 *, i8 *, i32}. The first field is a constant expression, the 4693c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar/// GlobalValue being annotated. The second field is the constant string 4708bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// created from the AnnotateAttr's annotation. The third field is a constant 4718bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// string containing the name of the translation unit. The fourth field is 4728bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// the line number in the file of the annotated value declaration. 4738bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// 4748bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// FIXME: this does not unique the annotation string constants, as llvm-gcc 4758bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// appears to. 4768bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// 4778bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begemanllvm::Constant *CodeGenModule::EmitAnnotateAttr(llvm::GlobalValue *GV, 4788bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman const AnnotateAttr *AA, 4798bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman unsigned LineNo) { 4808bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::Module *M = &getModule(); 4818bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman 4828bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman // get [N x i8] constants for the annotation string, and the filename string 4838bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman // which are the 2nd and 3rd elements of the global annotation structure. 4848bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman const llvm::Type *SBP = llvm::PointerType::getUnqual(llvm::Type::Int8Ty); 4858bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::Constant *anno = llvm::ConstantArray::get(AA->getAnnotation(), true); 4868bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::Constant *unit = llvm::ConstantArray::get(M->getModuleIdentifier(), 4878bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman true); 4888bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman 4898bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman // Get the two global values corresponding to the ConstantArrays we just 4908bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman // created to hold the bytes of the strings. 4918bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::GlobalValue *annoGV = 4928bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman new llvm::GlobalVariable(anno->getType(), false, 4938bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::GlobalValue::InternalLinkage, anno, 4948bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman GV->getName() + ".str", M); 4958bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman // translation unit name string, emitted into the llvm.metadata section. 4968bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::GlobalValue *unitGV = 4978bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman new llvm::GlobalVariable(unit->getType(), false, 4988bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::GlobalValue::InternalLinkage, unit, ".str", M); 4998bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman 5008bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman // Create the ConstantStruct that is the global annotion. 5018bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::Constant *Fields[4] = { 5028bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::ConstantExpr::getBitCast(GV, SBP), 5038bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::ConstantExpr::getBitCast(annoGV, SBP), 5048bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::ConstantExpr::getBitCast(unitGV, SBP), 5058bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::ConstantInt::get(llvm::Type::Int32Ty, LineNo) 5068bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman }; 5078bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman return llvm::ConstantStruct::get(Fields, 4, false); 5088bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman} 5098bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman 51073241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbarbool CodeGenModule::MayDeferGeneration(const ValueDecl *Global) { 5115c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar // Never defer when EmitAllDecls is specified or the decl has 5125c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar // attribute used. 5135c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar if (Features.EmitAllDecls || Global->getAttr<UsedAttr>()) 51473241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar return false; 515bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 516bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(Global)) { 51773241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar // Constructors and destructors should never be deferred. 51873241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar if (FD->getAttr<ConstructorAttr>() || FD->getAttr<DestructorAttr>()) 51973241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar return false; 52073241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar 52173241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar if (FD->getStorageClass() != FunctionDecl::Static) 52273241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar return false; 52373241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar } else { 52473241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar const VarDecl *VD = cast<VarDecl>(Global); 52573241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar assert(VD->isFileVarDecl() && "Invalid decl."); 52673241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar 52773241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar if (VD->getStorageClass() != VarDecl::Static) 52873241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar return false; 52973241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar } 53073241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar 53173241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar return true; 53273241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar} 53373241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar 53473241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbarvoid CodeGenModule::EmitGlobal(const ValueDecl *Global) { 53573241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(Global)) { 536219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar // Aliases are deferred until code for everything else has been 537219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar // emitted. 538219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar if (FD->getAttr<AliasAttr>()) { 539219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar assert(!FD->isThisDeclarationADefinition() && 540219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar "Function alias cannot have a definition!"); 541219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar Aliases.push_back(FD); 542219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar return; 543219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar } 544219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 54573241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar // Forward declarations are emitted lazily on first use. 54673241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar if (!FD->isThisDeclarationADefinition()) 54773241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar return; 5480269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar } else { 5490269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar const VarDecl *VD = cast<VarDecl>(Global); 550bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar assert(VD->isFileVarDecl() && "Cannot emit local var decl as global."); 551bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 55273241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar // Forward declarations are emitted lazily on first use. 5537542bca16b63c84e401b44b586ac3378aed446c5Daniel Dunbar if (!VD->getInit() && VD->hasExternalStorage()) 55473241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar return; 5554c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman } 5564c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman 55773241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar // Defer code generation when possible. 55873241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar if (MayDeferGeneration(Global)) { 5590269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar DeferredDecls.push_back(Global); 560bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar return; 561bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } 562bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 563bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar // Otherwise emit the definition. 564bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar EmitGlobalDefinition(Global); 5654c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman} 5664c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman 567bd012ff1fa088181646a784f385b28867372d434Daniel Dunbarvoid CodeGenModule::EmitGlobalDefinition(const ValueDecl *D) { 568bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 569bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar EmitGlobalFunctionDefinition(FD); 570bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } else if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { 571bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar EmitGlobalVarDefinition(VD); 572bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } else { 573bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar assert(0 && "Invalid argument to EmitGlobalDefinition()"); 574bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } 575bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar} 576bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 5779986eabd4423d867262c358ca62f94a60ac58412Daniel Dunbar llvm::Constant *CodeGenModule::GetAddrOfGlobalVar(const VarDecl *D) { 57877ba708819285931932ecd33691a672bb59d221aEli Friedman assert(D->hasGlobalStorage() && "Not a global variable"); 57977ba708819285931932ecd33691a672bb59d221aEli Friedman 580bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar QualType ASTTy = D->getType(); 581bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar const llvm::Type *Ty = getTypes().ConvertTypeForMem(ASTTy); 5829986eabd4423d867262c358ca62f94a60ac58412Daniel Dunbar const llvm::Type *PTy = llvm::PointerType::get(Ty, ASTTy.getAddressSpace()); 583bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 5843c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar // Lookup the entry, lazily creating it if necessary. 5855f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor llvm::GlobalValue *&Entry = GlobalDeclMap[getMangledName(D)]; 58649988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar if (!Entry) { 58749988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar llvm::GlobalVariable *GV = 58849988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar new llvm::GlobalVariable(Ty, false, 58949988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar llvm::GlobalValue::ExternalLinkage, 5906ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregor 0, getMangledName(D), &getModule(), 5915f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor 0, ASTTy.getAddressSpace()); 59249988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar Entry = GV; 59349988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar 59449988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // Handle things which are present even on external declarations. 59549988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar 59649988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // FIXME: This code is overly simple and should be merged with 59749988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // other global handling. 59849988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar 59949988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar GV->setConstant(D->getType().isConstant(Context)); 60049988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar 601eda9a5ec380f172f4e0063744eb796144a125480Daniel Dunbar // FIXME: Merge with other attribute handling code. 602eda9a5ec380f172f4e0063744eb796144a125480Daniel Dunbar 60349988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar if (D->getStorageClass() == VarDecl::PrivateExtern) 60449988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar setGlobalVisibility(GV, VisibilityAttr::HiddenVisibility); 605eda9a5ec380f172f4e0063744eb796144a125480Daniel Dunbar 606eda9a5ec380f172f4e0063744eb796144a125480Daniel Dunbar if (D->getAttr<WeakAttr>()) 607eda9a5ec380f172f4e0063744eb796144a125480Daniel Dunbar GV->setLinkage(llvm::GlobalValue::ExternalWeakLinkage); 60849988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar } 6093c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar 6109986eabd4423d867262c358ca62f94a60ac58412Daniel Dunbar // Make sure the result is of the correct type. 6119986eabd4423d867262c358ca62f94a60ac58412Daniel Dunbar return llvm::ConstantExpr::getBitCast(Entry, PTy); 612bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar} 613bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 614bd012ff1fa088181646a784f385b28867372d434Daniel Dunbarvoid CodeGenModule::EmitGlobalVarDefinition(const VarDecl *D) { 6158f32f7189b12f67aa4a19bc7c3855b599980eca0Chris Lattner llvm::Constant *Init = 0; 61677ba708819285931932ecd33691a672bb59d221aEli Friedman QualType ASTTy = D->getType(); 61777ba708819285931932ecd33691a672bb59d221aEli Friedman const llvm::Type *VarTy = getTypes().ConvertTypeForMem(ASTTy); 61877ba708819285931932ecd33691a672bb59d221aEli Friedman 6198f32f7189b12f67aa4a19bc7c3855b599980eca0Chris Lattner if (D->getInit() == 0) { 620cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman // This is a tentative definition; tentative definitions are 621cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman // implicitly initialized with { 0 } 622cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman const llvm::Type* InitTy; 623cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman if (ASTTy->isIncompleteArrayType()) { 624cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman // An incomplete array is normally [ TYPE x 0 ], but we need 625cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman // to fix it to [ TYPE x 1 ]. 626cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman const llvm::ArrayType* ATy = cast<llvm::ArrayType>(VarTy); 627cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman InitTy = llvm::ArrayType::get(ATy->getElementType(), 1); 628cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman } else { 629cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman InitTy = VarTy; 630cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman } 631cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman Init = llvm::Constant::getNullValue(InitTy); 63277ba708819285931932ecd33691a672bb59d221aEli Friedman } else { 633bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar Init = EmitConstantExpr(D->getInit()); 6346e656f45ae04b415ba7a4c0c25e55633e2d0ecd0Eli Friedman if (!Init) { 635232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar ErrorUnsupported(D, "static initializer"); 6366e656f45ae04b415ba7a4c0c25e55633e2d0ecd0Eli Friedman QualType T = D->getInit()->getType(); 6376e656f45ae04b415ba7a4c0c25e55633e2d0ecd0Eli Friedman Init = llvm::UndefValue::get(getTypes().ConvertType(T)); 6386e656f45ae04b415ba7a4c0c25e55633e2d0ecd0Eli Friedman } 6398f32f7189b12f67aa4a19bc7c3855b599980eca0Chris Lattner } 64077ba708819285931932ecd33691a672bb59d221aEli Friedman const llvm::Type* InitType = Init->getType(); 6418e53e720b3d7c962e91138a130dbd5d6c2def0e5Devang Patel 6425f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor llvm::GlobalValue *&Entry = GlobalDeclMap[getMangledName(D)]; 6433c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar llvm::GlobalVariable *GV = cast_or_null<llvm::GlobalVariable>(Entry); 6443c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar 64577ba708819285931932ecd33691a672bb59d221aEli Friedman if (!GV) { 64677ba708819285931932ecd33691a672bb59d221aEli Friedman GV = new llvm::GlobalVariable(InitType, false, 64777ba708819285931932ecd33691a672bb59d221aEli Friedman llvm::GlobalValue::ExternalLinkage, 6486ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregor 0, getMangledName(D), 6495f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor &getModule(), 0, ASTTy.getAddressSpace()); 650232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar 651232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar } else if (GV->hasInitializer() && !GV->getInitializer()->isNullValue()) { 652232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // If we already have this global and it has an initializer, then 653232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // we are in the rare situation where we emitted the defining 654232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // declaration of the global and are now being asked to emit a 655232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // definition which would be common. This occurs, for example, in 656232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // the following situation because statics can be emitted out of 657232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // order: 658232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // 659232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // static int x; 660232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // static int *y = &x; 661232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // static int x = 10; 662232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // int **z = &y; 663232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // 664232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // Bail here so we don't blow away the definition. Note that if we 665232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // can't distinguish here if we emitted a definition with a null 666232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // initializer, but this case is safe. 667232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar assert(!D->getInit() && "Emitting multiple definitions of a decl!"); 668232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar return; 669232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar 6703c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar } else if (GV->getType() != 6713c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar llvm::PointerType::get(InitType, ASTTy.getAddressSpace())) { 67277ba708819285931932ecd33691a672bb59d221aEli Friedman // We have a definition after a prototype with the wrong type. 67377ba708819285931932ecd33691a672bb59d221aEli Friedman // We must make a new GlobalVariable* and update everything that used OldGV 67477ba708819285931932ecd33691a672bb59d221aEli Friedman // (a declaration or tentative definition) with the new GlobalVariable* 67577ba708819285931932ecd33691a672bb59d221aEli Friedman // (which will be a definition). 67677ba708819285931932ecd33691a672bb59d221aEli Friedman // 67777ba708819285931932ecd33691a672bb59d221aEli Friedman // This happens if there is a prototype for a global (e.g. "extern int x[];") 67877ba708819285931932ecd33691a672bb59d221aEli Friedman // and then a definition of a different type (e.g. "int x[10];"). This also 67977ba708819285931932ecd33691a672bb59d221aEli Friedman // happens when an initializer has a different type from the type of the 68077ba708819285931932ecd33691a672bb59d221aEli Friedman // global (this happens with unions). 681cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman // 682cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman // FIXME: This also ends up happening if there's a definition followed by 683cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman // a tentative definition! (Although Sema rejects that construct 684cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman // at the moment.) 68577ba708819285931932ecd33691a672bb59d221aEli Friedman 68677ba708819285931932ecd33691a672bb59d221aEli Friedman // Save the old global 68777ba708819285931932ecd33691a672bb59d221aEli Friedman llvm::GlobalVariable *OldGV = GV; 68877ba708819285931932ecd33691a672bb59d221aEli Friedman 68977ba708819285931932ecd33691a672bb59d221aEli Friedman // Make a new global with the correct type 69077ba708819285931932ecd33691a672bb59d221aEli Friedman GV = new llvm::GlobalVariable(InitType, false, 69177ba708819285931932ecd33691a672bb59d221aEli Friedman llvm::GlobalValue::ExternalLinkage, 6926ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregor 0, getMangledName(D), 6935f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor &getModule(), 0, ASTTy.getAddressSpace()); 69477ba708819285931932ecd33691a672bb59d221aEli Friedman // Steal the name of the old global 69577ba708819285931932ecd33691a672bb59d221aEli Friedman GV->takeName(OldGV); 69677ba708819285931932ecd33691a672bb59d221aEli Friedman 69777ba708819285931932ecd33691a672bb59d221aEli Friedman // Replace all uses of the old global with the new global 69877ba708819285931932ecd33691a672bb59d221aEli Friedman llvm::Constant *NewPtrForOldDecl = 69977ba708819285931932ecd33691a672bb59d221aEli Friedman llvm::ConstantExpr::getBitCast(GV, OldGV->getType()); 70077ba708819285931932ecd33691a672bb59d221aEli Friedman OldGV->replaceAllUsesWith(NewPtrForOldDecl); 70177ba708819285931932ecd33691a672bb59d221aEli Friedman 70277ba708819285931932ecd33691a672bb59d221aEli Friedman // Erase the old global, since it is no longer used. 70377ba708819285931932ecd33691a672bb59d221aEli Friedman OldGV->eraseFromParent(); 70477ba708819285931932ecd33691a672bb59d221aEli Friedman } 70577ba708819285931932ecd33691a672bb59d221aEli Friedman 7063c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar Entry = GV; 7079e32d4b4a7270a9701b7cb454381eeaa4cc42a77Devang Patel 7088bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman if (const AnnotateAttr *AA = D->getAttr<AnnotateAttr>()) { 7098bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman SourceManager &SM = Context.getSourceManager(); 7108bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman AddAnnotation(EmitAnnotateAttr(GV, AA, 711f7cf85b330bedd2877e1371fb0a83e99751ae162Chris Lattner SM.getInstantiationLineNumber(D->getLocation()))); 7128bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman } 7138bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman 71488a69ad80e1550e9932666e6efa050a5b1223889Chris Lattner GV->setInitializer(Init); 715b381aac9bae6d608c72267dd0ed08ec6369e94e4Nuno Lopes GV->setConstant(D->getType().isConstant(Context)); 716ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner 717cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman // FIXME: This is silly; getTypeAlign should just work for incomplete arrays 718cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman unsigned Align; 719c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner if (const IncompleteArrayType* IAT = 720c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner Context.getAsIncompleteArrayType(D->getType())) 721cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman Align = Context.getTypeAlign(IAT->getElementType()); 722cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman else 723cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman Align = Context.getTypeAlign(D->getType()); 7246aee306b1c653bc7d86ae6cb2b905e8b8d0ac27fDaniel Dunbar if (const AlignedAttr* AA = D->getAttr<AlignedAttr>()) 72508d7802a406ee4a7cc18e8fce0c137b8c410ea7cEli Friedman Align = std::max(Align, AA->getAlignment()); 72608d7802a406ee4a7cc18e8fce0c137b8c410ea7cEli Friedman GV->setAlignment(Align / 8); 72708d7802a406ee4a7cc18e8fce0c137b8c410ea7cEli Friedman 728ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner if (const VisibilityAttr *attr = D->getAttr<VisibilityAttr>()) 72941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar setGlobalVisibility(GV, attr->getVisibility()); 730ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner // FIXME: else handle -fvisibility 731a735ad8be5536a1cd3e9817ec27dfeb2a0c1d5caDaniel Dunbar 732a735ad8be5536a1cd3e9817ec27dfeb2a0c1d5caDaniel Dunbar if (const AsmLabelAttr *ALA = D->getAttr<AsmLabelAttr>()) { 733a735ad8be5536a1cd3e9817ec27dfeb2a0c1d5caDaniel Dunbar // Prefaced with special LLVM marker to indicate that the name 734a735ad8be5536a1cd3e9817ec27dfeb2a0c1d5caDaniel Dunbar // should not be munged. 735a735ad8be5536a1cd3e9817ec27dfeb2a0c1d5caDaniel Dunbar GV->setName("\01" + ALA->getLabel()); 736a735ad8be5536a1cd3e9817ec27dfeb2a0c1d5caDaniel Dunbar } 73788a69ad80e1550e9932666e6efa050a5b1223889Chris Lattner 73888a69ad80e1550e9932666e6efa050a5b1223889Chris Lattner // Set the llvm linkage type as appropriate. 7398fabd78f1976243cb223fb3e969c6f317d1ae44dChris Lattner if (D->getStorageClass() == VarDecl::Static) 7408fabd78f1976243cb223fb3e969c6f317d1ae44dChris Lattner GV->setLinkage(llvm::Function::InternalLinkage); 7418fabd78f1976243cb223fb3e969c6f317d1ae44dChris Lattner else if (D->getAttr<DLLImportAttr>()) 742ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner GV->setLinkage(llvm::Function::DLLImportLinkage); 743ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner else if (D->getAttr<DLLExportAttr>()) 744ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner GV->setLinkage(llvm::Function::DLLExportLinkage); 7458fabd78f1976243cb223fb3e969c6f317d1ae44dChris Lattner else if (D->getAttr<WeakAttr>()) 746ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner GV->setLinkage(llvm::GlobalVariable::WeakLinkage); 7478fabd78f1976243cb223fb3e969c6f317d1ae44dChris Lattner else { 748ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner // FIXME: This isn't right. This should handle common linkage and other 749ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner // stuff. 750ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner switch (D->getStorageClass()) { 7518fabd78f1976243cb223fb3e969c6f317d1ae44dChris Lattner case VarDecl::Static: assert(0 && "This case handled above"); 752ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner case VarDecl::Auto: 753ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner case VarDecl::Register: 754ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner assert(0 && "Can't have auto or register globals"); 755ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner case VarDecl::None: 756ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner if (!D->getInit()) 757a07b76419a03f126c22949dce2e546ba4df0e415Eli Friedman GV->setLinkage(llvm::GlobalVariable::CommonLinkage); 75898883e1e699457697fb8d5ac6d175dd3ee078774Anders Carlsson else 75998883e1e699457697fb8d5ac6d175dd3ee078774Anders Carlsson GV->setLinkage(llvm::GlobalVariable::ExternalLinkage); 760ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner break; 761ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner case VarDecl::Extern: 76249988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // FIXME: common 76349988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar break; 76449988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar 765ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner case VarDecl::PrivateExtern: 76649988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar GV->setVisibility(llvm::GlobalValue::HiddenVisibility); 76749988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // FIXME: common 768ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner break; 769ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner } 77088a69ad80e1550e9932666e6efa050a5b1223889Chris Lattner } 771686226b538e72c5059ab7c9a8f87eb883193b645Sanjiv Gupta 77217f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar if (const SectionAttr *SA = D->getAttr<SectionAttr>()) 77317f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar GV->setSection(SA->getName()); 77417f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar 7755c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar if (D->getAttr<UsedAttr>()) 7765c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar AddUsedGlobal(GV); 7775c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar 778686226b538e72c5059ab7c9a8f87eb883193b645Sanjiv Gupta // Emit global variable debug information. 779686226b538e72c5059ab7c9a8f87eb883193b645Sanjiv Gupta CGDebugInfo *DI = getDebugInfo(); 780686226b538e72c5059ab7c9a8f87eb883193b645Sanjiv Gupta if(DI) { 78166031a5594bc9a7dc0dc5137c3e7955f835e4639Daniel Dunbar DI->setLocation(D->getLocation()); 782686226b538e72c5059ab7c9a8f87eb883193b645Sanjiv Gupta DI->EmitGlobalVariable(GV, D); 783686226b538e72c5059ab7c9a8f87eb883193b645Sanjiv Gupta } 78488a69ad80e1550e9932666e6efa050a5b1223889Chris Lattner} 7855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 786bd012ff1fa088181646a784f385b28867372d434Daniel Dunbarllvm::GlobalValue * 787d5d31801fc87239436fa349c89dce7797cf13537Daniel DunbarCodeGenModule::EmitForwardFunctionDefinition(const FunctionDecl *D, 788d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar const llvm::Type *Ty) { 789d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar if (!Ty) 790d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar Ty = getTypes().ConvertType(D->getType()); 791219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar llvm::Function *F = llvm::Function::Create(cast<llvm::FunctionType>(Ty), 792219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar llvm::Function::ExternalLinkage, 7936ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregor getMangledName(D), 7945f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor &getModule()); 795219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar SetFunctionAttributes(D, F); 796219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar return F; 797bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar} 798bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 799bd012ff1fa088181646a784f385b28867372d434Daniel Dunbarllvm::Constant *CodeGenModule::GetAddrOfFunction(const FunctionDecl *D) { 8009986eabd4423d867262c358ca62f94a60ac58412Daniel Dunbar QualType ASTTy = D->getType(); 8019986eabd4423d867262c358ca62f94a60ac58412Daniel Dunbar const llvm::Type *Ty = getTypes().ConvertTypeForMem(ASTTy); 8029986eabd4423d867262c358ca62f94a60ac58412Daniel Dunbar const llvm::Type *PTy = llvm::PointerType::get(Ty, ASTTy.getAddressSpace()); 8033c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar 8043c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar // Lookup the entry, lazily creating it if necessary. 8055f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor llvm::GlobalValue *&Entry = GlobalDeclMap[getMangledName(D)]; 8063c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar if (!Entry) 807d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar Entry = EmitForwardFunctionDefinition(D, 0); 808bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 8099986eabd4423d867262c358ca62f94a60ac58412Daniel Dunbar return llvm::ConstantExpr::getBitCast(Entry, PTy); 810bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar} 811bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 812bd012ff1fa088181646a784f385b28867372d434Daniel Dunbarvoid CodeGenModule::EmitGlobalFunctionDefinition(const FunctionDecl *D) { 813d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar const llvm::FunctionType *Ty = 814d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar cast<llvm::FunctionType>(getTypes().ConvertType(D->getType())); 815d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar 816d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar // As a special case, make sure that definitions of K&R function 817d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar // "type foo()" aren't declared as varargs (which forces the backend 818d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar // to do unnecessary work). 819d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar if (Ty->isVarArg() && Ty->getNumParams() == 0 && Ty->isVarArg()) 820d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar Ty = llvm::FunctionType::get(Ty->getReturnType(), 821d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar std::vector<const llvm::Type*>(), 822d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar false); 823d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar 8245f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor llvm::GlobalValue *&Entry = GlobalDeclMap[getMangledName(D)]; 8253c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar if (!Entry) { 826d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar Entry = EmitForwardFunctionDefinition(D, Ty); 827bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } else { 8283c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar // If the types mismatch then we have to rewrite the definition. 8293c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar if (Entry->getType() != llvm::PointerType::getUnqual(Ty)) { 830d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar // Otherwise, we have a definition after a prototype with the 831d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar // wrong type. F is the Function* for the one with the wrong 832d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar // type, we must make a new Function* and update everything that 833d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar // used F (a declaration) with the new Function* (which will be 834d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar // a definition). 835bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar // 836d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar // This happens if there is a prototype for a function 837d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar // (e.g. "int f()") and then a definition of a different type 838d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar // (e.g. "int f(int x)"). Start by making a new function of the 839d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar // correct type, RAUW, then steal the name. 840d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar llvm::GlobalValue *NewFn = EmitForwardFunctionDefinition(D, Ty); 8413c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar NewFn->takeName(Entry); 842bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 843bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar // Replace uses of F with the Function we will endow with a body. 844bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar llvm::Constant *NewPtrForOldDecl = 8453c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar llvm::ConstantExpr::getBitCast(NewFn, Entry->getType()); 8463c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar Entry->replaceAllUsesWith(NewPtrForOldDecl); 8473c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar 848bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar // Ok, delete the old function now, which is dead. 8493c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar assert(Entry->isDeclaration() && "Shouldn't replace non-declaration"); 850219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar Entry->eraseFromParent(); 851bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 852bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar Entry = NewFn; 853bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } 854bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } 855bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 856219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar llvm::Function *Fn = cast<llvm::Function>(Entry); 857219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar CodeGenFunction(*this).GenerateCode(D, Fn); 8586379a7a15335e0af543a942efe9cfd514a83dab8Daniel Dunbar 859219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar SetFunctionAttributesForDefinition(D, Fn); 860219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 861219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar if (const ConstructorAttr *CA = D->getAttr<ConstructorAttr>()) { 862219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar AddGlobalCtor(Fn, CA->getPriority()); 863219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar } else if (const DestructorAttr *DA = D->getAttr<DestructorAttr>()) { 864219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar AddGlobalDtor(Fn, DA->getPriority()); 865bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } 866bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar} 867bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 868f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbarllvm::Function * 869f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel DunbarCodeGenModule::CreateRuntimeFunction(const llvm::FunctionType *FTy, 870f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar const std::string &Name) { 871f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar llvm::Function *Fn = llvm::Function::Create(FTy, 872f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar llvm::Function::ExternalLinkage, 873f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar "", &TheModule); 874f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar RuntimeFunctions.push_back(std::make_pair(Fn, Name)); 875f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar return Fn; 876f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar} 877f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar 878c5b8806cda286cf41866176ef98011fdaa68da01Chris Lattnervoid CodeGenModule::UpdateCompletedType(const TagDecl *TD) { 879c5b8806cda286cf41866176ef98011fdaa68da01Chris Lattner // Make sure that this type is translated. 880c5b8806cda286cf41866176ef98011fdaa68da01Chris Lattner Types.UpdateCompletedType(TD); 881d86e6bc7ab4388a578daf46e7c76be9122a25072Chris Lattner} 882d86e6bc7ab4388a578daf46e7c76be9122a25072Chris Lattner 883d86e6bc7ab4388a578daf46e7c76be9122a25072Chris Lattner 884bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner/// getBuiltinLibFunction 885bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattnerllvm::Function *CodeGenModule::getBuiltinLibFunction(unsigned BuiltinID) { 8861426fecdf90dd1986751b9940422e675880ff671Chris Lattner if (BuiltinID > BuiltinFunctions.size()) 8871426fecdf90dd1986751b9940422e675880ff671Chris Lattner BuiltinFunctions.resize(BuiltinID); 888bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 8891426fecdf90dd1986751b9940422e675880ff671Chris Lattner // Cache looked up functions. Since builtin id #0 is invalid we don't reserve 8901426fecdf90dd1986751b9940422e675880ff671Chris Lattner // a slot for it. 8911426fecdf90dd1986751b9940422e675880ff671Chris Lattner assert(BuiltinID && "Invalid Builtin ID"); 8921426fecdf90dd1986751b9940422e675880ff671Chris Lattner llvm::Function *&FunctionSlot = BuiltinFunctions[BuiltinID-1]; 893bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner if (FunctionSlot) 894bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner return FunctionSlot; 895bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 8963e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor assert((Context.BuiltinInfo.isLibFunction(BuiltinID) || 8973e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor Context.BuiltinInfo.isPredefinedLibFunction(BuiltinID)) && 8983e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor "isn't a lib fn"); 899bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 9003e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor // Get the name, skip over the __builtin_ prefix (if necessary). 9013e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor const char *Name = Context.BuiltinInfo.GetName(BuiltinID); 9023e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor if (Context.BuiltinInfo.isLibFunction(BuiltinID)) 9033e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor Name += 10; 904bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 905bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner // Get the type for the builtin. 906370ab3f1373841d70582feac9e35c3c6b3489f63Douglas Gregor Builtin::Context::GetBuiltinTypeError Error; 907370ab3f1373841d70582feac9e35c3c6b3489f63Douglas Gregor QualType Type = Context.BuiltinInfo.GetBuiltinType(BuiltinID, Context, Error); 908370ab3f1373841d70582feac9e35c3c6b3489f63Douglas Gregor assert(Error == Builtin::Context::GE_None && "Can't get builtin type"); 909370ab3f1373841d70582feac9e35c3c6b3489f63Douglas Gregor 910bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner const llvm::FunctionType *Ty = 911bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner cast<llvm::FunctionType>(getTypes().ConvertType(Type)); 912bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 913bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner // FIXME: This has a serious problem with code like this: 914bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner // void abs() {} 915bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner // ... __builtin_abs(x); 916bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner // The two versions of abs will collide. The fix is for the builtin to win, 917bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner // and for the existing one to be turned into a constantexpr cast of the 918bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner // builtin. In the case where the existing one is a static function, it 919bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner // should just be renamed. 920c5e940fa551840ecd71e8116c316c9131490f5faChris Lattner if (llvm::Function *Existing = getModule().getFunction(Name)) { 921c5e940fa551840ecd71e8116c316c9131490f5faChris Lattner if (Existing->getFunctionType() == Ty && Existing->hasExternalLinkage()) 922c5e940fa551840ecd71e8116c316c9131490f5faChris Lattner return FunctionSlot = Existing; 923c5e940fa551840ecd71e8116c316c9131490f5faChris Lattner assert(Existing == 0 && "FIXME: Name collision"); 924c5e940fa551840ecd71e8116c316c9131490f5faChris Lattner } 925bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 926bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner // FIXME: param attributes for sext/zext etc. 9274c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman return FunctionSlot = 9284c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman llvm::Function::Create(Ty, llvm::Function::ExternalLinkage, Name, 9294c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman &getModule()); 930bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner} 931bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 9327acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattnerllvm::Function *CodeGenModule::getIntrinsic(unsigned IID,const llvm::Type **Tys, 9337acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattner unsigned NumTys) { 9347acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattner return llvm::Intrinsic::getDeclaration(&getModule(), 9357acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattner (llvm::Intrinsic::ID)IID, Tys, NumTys); 9367acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattner} 937bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 9385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerllvm::Function *CodeGenModule::getMemCpyFn() { 9395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (MemCpyFn) return MemCpyFn; 9404e8a9e8640a6717120394ee2ee5f27989757754dChris Lattner const llvm::Type *IntPtr = TheTargetData.getIntPtrType(); 9414e8a9e8640a6717120394ee2ee5f27989757754dChris Lattner return MemCpyFn = getIntrinsic(llvm::Intrinsic::memcpy, &IntPtr, 1); 9425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 943c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 9440c99509927a0c7a48490486b9fec287b63e5c09cEli Friedmanllvm::Function *CodeGenModule::getMemMoveFn() { 9450c99509927a0c7a48490486b9fec287b63e5c09cEli Friedman if (MemMoveFn) return MemMoveFn; 9464e8a9e8640a6717120394ee2ee5f27989757754dChris Lattner const llvm::Type *IntPtr = TheTargetData.getIntPtrType(); 9474e8a9e8640a6717120394ee2ee5f27989757754dChris Lattner return MemMoveFn = getIntrinsic(llvm::Intrinsic::memmove, &IntPtr, 1); 9480c99509927a0c7a48490486b9fec287b63e5c09cEli Friedman} 9490c99509927a0c7a48490486b9fec287b63e5c09cEli Friedman 95041ef30e869d3f4940437503eb6a2cf70819fdb08Lauro Ramos Venanciollvm::Function *CodeGenModule::getMemSetFn() { 95141ef30e869d3f4940437503eb6a2cf70819fdb08Lauro Ramos Venancio if (MemSetFn) return MemSetFn; 9524e8a9e8640a6717120394ee2ee5f27989757754dChris Lattner const llvm::Type *IntPtr = TheTargetData.getIntPtrType(); 9534e8a9e8640a6717120394ee2ee5f27989757754dChris Lattner return MemSetFn = getIntrinsic(llvm::Intrinsic::memset, &IntPtr, 1); 95441ef30e869d3f4940437503eb6a2cf70819fdb08Lauro Ramos Venancio} 9557acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattner 956e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlssonstatic void appendFieldAndPadding(CodeGenModule &CGM, 957e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson std::vector<llvm::Constant*>& Fields, 95844b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor FieldDecl *FieldD, FieldDecl *NextFieldD, 95944b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor llvm::Constant* Field, 960e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson RecordDecl* RD, const llvm::StructType *STy) 961e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson{ 962e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson // Append the field. 963e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson Fields.push_back(Field); 964e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson 96544b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor int StructFieldNo = CGM.getTypes().getLLVMFieldNo(FieldD); 966e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson 967e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson int NextStructFieldNo; 96844b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor if (!NextFieldD) { 969e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson NextStructFieldNo = STy->getNumElements(); 970e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson } else { 97144b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor NextStructFieldNo = CGM.getTypes().getLLVMFieldNo(NextFieldD); 972e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson } 973e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson 974e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson // Append padding 975e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson for (int i = StructFieldNo + 1; i < NextStructFieldNo; i++) { 976e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson llvm::Constant *C = 977e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson llvm::Constant::getNullValue(STy->getElementType(StructFieldNo + 1)); 978e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson 979e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson Fields.push_back(C); 980e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson } 981e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson} 982e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson 9833e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar// We still need to work out the details of handling UTF-16. 9843e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar// See: <rdr://2996215> 985bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattnerllvm::Constant *CodeGenModule:: 986bef20ac367a09555b30d6eb3847a81ec164caf88Chris LattnerGetAddrOfConstantCFString(const std::string &str) { 987c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson llvm::StringMapEntry<llvm::Constant *> &Entry = 988c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson CFConstantStringMap.GetOrCreateValue(&str[0], &str[str.length()]); 989c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 990c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson if (Entry.getValue()) 991c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson return Entry.getValue(); 992c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 9933e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar llvm::Constant *Zero = llvm::Constant::getNullValue(llvm::Type::Int32Ty); 9943e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar llvm::Constant *Zeros[] = { Zero, Zero }; 995c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 996c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson if (!CFConstantStringClassRef) { 997c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson const llvm::Type *Ty = getTypes().ConvertType(getContext().IntTy); 998c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson Ty = llvm::ArrayType::get(Ty, 0); 9993e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar 10003e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar // FIXME: This is fairly broken if 10013e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar // __CFConstantStringClassReference is already defined, in that it 10023e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar // will get renamed and the user will most likely see an opaque 10033e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar // error message. This is a general issue with relying on 10043e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar // particular names. 10053e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar llvm::GlobalVariable *GV = 1006c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson new llvm::GlobalVariable(Ty, false, 1007c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson llvm::GlobalVariable::ExternalLinkage, 0, 1008c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson "__CFConstantStringClassReference", 1009c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson &getModule()); 10103e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar 10113e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar // Decay array -> ptr 10123e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar CFConstantStringClassRef = 10133e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar llvm::ConstantExpr::getGetElementPtr(GV, Zeros, 2); 1014c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson } 1015c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 1016e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson QualType CFTy = getContext().getCFConstantStringType(); 1017e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson RecordDecl *CFRD = CFTy->getAsRecordType()->getDecl(); 10183e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar 1019e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson const llvm::StructType *STy = 1020e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson cast<llvm::StructType>(getTypes().ConvertType(CFTy)); 1021e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson 1022e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson std::vector<llvm::Constant*> Fields; 102344b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor RecordDecl::field_iterator Field = CFRD->field_begin(); 102444b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 1025c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // Class pointer. 102644b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor FieldDecl *CurField = *Field++; 102744b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor FieldDecl *NextField = *Field++; 102844b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor appendFieldAndPadding(*this, Fields, CurField, NextField, 102944b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor CFConstantStringClassRef, CFRD, STy); 1030c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 1031c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // Flags. 103244b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor CurField = NextField; 103344b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor NextField = *Field++; 10343e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar const llvm::Type *Ty = getTypes().ConvertType(getContext().UnsignedIntTy); 103544b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor appendFieldAndPadding(*this, Fields, CurField, NextField, 103644b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor llvm::ConstantInt::get(Ty, 0x07C8), CFRD, STy); 1037c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 1038c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // String pointer. 103944b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor CurField = NextField; 104044b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor NextField = *Field++; 10413e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar llvm::Constant *C = llvm::ConstantArray::get(str); 1042c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson C = new llvm::GlobalVariable(C->getType(), true, 1043c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson llvm::GlobalValue::InternalLinkage, 1044e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson C, ".str", &getModule()); 104544b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor appendFieldAndPadding(*this, Fields, CurField, NextField, 1046e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson llvm::ConstantExpr::getGetElementPtr(C, Zeros, 2), 1047e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson CFRD, STy); 1048c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 1049c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // String length. 105044b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor CurField = NextField; 105144b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor NextField = 0; 1052c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson Ty = getTypes().ConvertType(getContext().LongTy); 105344b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor appendFieldAndPadding(*this, Fields, CurField, NextField, 105444b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor llvm::ConstantInt::get(Ty, str.length()), CFRD, STy); 1055c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 1056c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // The struct. 1057e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson C = llvm::ConstantStruct::get(STy, Fields); 10580c67829763b98bc670062b553897a851fab17401Anders Carlsson llvm::GlobalVariable *GV = 10590c67829763b98bc670062b553897a851fab17401Anders Carlsson new llvm::GlobalVariable(C->getType(), true, 10600c67829763b98bc670062b553897a851fab17401Anders Carlsson llvm::GlobalVariable::InternalLinkage, 10610c67829763b98bc670062b553897a851fab17401Anders Carlsson C, "", &getModule()); 10623e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar 10630c67829763b98bc670062b553897a851fab17401Anders Carlsson GV->setSection("__DATA,__cfstring"); 10640c67829763b98bc670062b553897a851fab17401Anders Carlsson Entry.setValue(GV); 10653e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar 10660c67829763b98bc670062b553897a851fab17401Anders Carlsson return GV; 1067c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson} 106845e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 10696143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// GetStringForStringLiteral - Return the appropriate bytes for a 10701e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar/// string literal, properly padded to match the literal type. 10716143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbarstd::string CodeGenModule::GetStringForStringLiteral(const StringLiteral *E) { 10721e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar const char *StrData = E->getStrData(); 10731e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar unsigned Len = E->getByteLength(); 10741e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar 10751e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar const ConstantArrayType *CAT = 10761e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar getContext().getAsConstantArrayType(E->getType()); 10771e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar assert(CAT && "String isn't pointer or array!"); 10781e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar 1079dbb1ecc32ca122b07b7c98fd0a8f6f53985adaccChris Lattner // Resize the string to the right size. 10801e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar std::string Str(StrData, StrData+Len); 10811e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar uint64_t RealLen = CAT->getSize().getZExtValue(); 1082dbb1ecc32ca122b07b7c98fd0a8f6f53985adaccChris Lattner 1083dbb1ecc32ca122b07b7c98fd0a8f6f53985adaccChris Lattner if (E->isWide()) 1084dbb1ecc32ca122b07b7c98fd0a8f6f53985adaccChris Lattner RealLen *= getContext().Target.getWCharWidth()/8; 1085dbb1ecc32ca122b07b7c98fd0a8f6f53985adaccChris Lattner 10861e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar Str.resize(RealLen, '\0'); 10871e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar 10881e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar return Str; 10891e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar} 10901e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar 10916143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// GetAddrOfConstantStringFromLiteral - Return a pointer to a 10926143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// constant array for the given string literal. 10936143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbarllvm::Constant * 10946143293fa4366ee95d7e47e61bd030a34bf68b55Daniel DunbarCodeGenModule::GetAddrOfConstantStringFromLiteral(const StringLiteral *S) { 10956143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar // FIXME: This can be more efficient. 10966143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar return GetAddrOfConstantString(GetStringForStringLiteral(S)); 10976143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar} 10986143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar 1099eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner/// GetAddrOfConstantStringFromObjCEncode - Return a pointer to a constant 1100eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner/// array for the given ObjCEncodeExpr node. 1101eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattnerllvm::Constant * 1102eaf2bb89eb2aad3b80673de30febe52df43c10ecChris LattnerCodeGenModule::GetAddrOfConstantStringFromObjCEncode(const ObjCEncodeExpr *E) { 1103eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner std::string Str; 1104eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner getContext().getObjCEncodingForType(E->getEncodedType(), Str); 1105eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner 1106eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner llvm::Constant *C = llvm::ConstantArray::get(Str); 1107eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner C = new llvm::GlobalVariable(C->getType(), true, 1108eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner llvm::GlobalValue::InternalLinkage, 1109eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner C, ".str", &getModule()); 1110eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner return C; 1111eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner} 1112eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner 1113eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner 1114a7ad98ff0919d6a24ea7c46634ea29bea551c1a0Chris Lattner/// GenerateWritableString -- Creates storage for a string literal. 111545e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattnerstatic llvm::Constant *GenerateStringLiteral(const std::string &str, 111645e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner bool constant, 11175fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar CodeGenModule &CGM, 11185fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar const char *GlobalName) { 11196143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar // Create Constant for this string literal. Don't add a '\0'. 11206143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar llvm::Constant *C = llvm::ConstantArray::get(str, false); 112145e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 112245e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner // Create a global variable for this string 1123eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner return new llvm::GlobalVariable(C->getType(), constant, 1124eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner llvm::GlobalValue::InternalLinkage, 1125eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner C, GlobalName ? GlobalName : ".str", 1126eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner &CGM.getModule()); 112745e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner} 112845e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 11296143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// GetAddrOfConstantString - Returns a pointer to a character array 11306143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// containing the literal. This contents are exactly that of the 11316143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// given string, i.e. it will not be null terminated automatically; 11326143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// see GetAddrOfConstantCString. Note that whether the result is 11336143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// actually a pointer to an LLVM constant depends on 11346143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// Feature.WriteableStrings. 11356143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// 11366143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// The result has pointer to array type. 11375fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbarllvm::Constant *CodeGenModule::GetAddrOfConstantString(const std::string &str, 11385fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar const char *GlobalName) { 113945e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner // Don't share any string literals if writable-strings is turned on. 114045e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner if (Features.WritableStrings) 11415fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar return GenerateStringLiteral(str, false, *this, GlobalName); 114245e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 114345e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner llvm::StringMapEntry<llvm::Constant *> &Entry = 114445e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner ConstantStringMap.GetOrCreateValue(&str[0], &str[str.length()]); 114545e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 114645e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner if (Entry.getValue()) 1147eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner return Entry.getValue(); 114845e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 114945e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner // Create a global variable for this. 11505fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar llvm::Constant *C = GenerateStringLiteral(str, true, *this, GlobalName); 115145e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner Entry.setValue(C); 115245e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner return C; 115345e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner} 11546143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar 11556143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// GetAddrOfConstantCString - Returns a pointer to a character 11566143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// array containing the literal and a terminating '\-' 11576143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// character. The result has pointer to array type. 11585fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbarllvm::Constant *CodeGenModule::GetAddrOfConstantCString(const std::string &str, 11595fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar const char *GlobalName){ 1160c9f29c61856ffb5f643cedbe87ac076f21a1381aChris Lattner return GetAddrOfConstantString(str + '\0', GlobalName); 11616143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar} 116241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 1163af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar/// EmitObjCPropertyImplementations - Emit information for synthesized 1164af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar/// properties for an implementation. 1165af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbarvoid CodeGenModule::EmitObjCPropertyImplementations(const 1166af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCImplementationDecl *D) { 1167af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar for (ObjCImplementationDecl::propimpl_iterator i = D->propimpl_begin(), 1168af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar e = D->propimpl_end(); i != e; ++i) { 1169af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCPropertyImplDecl *PID = *i; 1170af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 1171af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // Dynamic is just for type-checking. 1172af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize) { 1173af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCPropertyDecl *PD = PID->getPropertyDecl(); 1174af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 1175af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // Determine which methods need to be implemented, some may have 1176af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // been overridden. Note that ::isSynthesized is not the method 1177af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // we want, that just indicates if the decl came from a 1178af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // property. What we want to know is if the method is defined in 1179af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // this implementation. 1180af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar if (!D->getInstanceMethod(PD->getGetterName())) 1181fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian CodeGenFunction(*this).GenerateObjCGetter( 1182fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian const_cast<ObjCImplementationDecl *>(D), PID); 1183af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar if (!PD->isReadOnly() && 1184af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar !D->getInstanceMethod(PD->getSetterName())) 1185fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian CodeGenFunction(*this).GenerateObjCSetter( 1186fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian const_cast<ObjCImplementationDecl *>(D), PID); 1187af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar } 1188af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar } 1189af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar} 1190af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 119141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar/// EmitTopLevelDecl - Emit code for a single top level declaration. 119241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbarvoid CodeGenModule::EmitTopLevelDecl(Decl *D) { 119341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // If an error has occurred, stop code generation, but continue 119441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // parsing and semantic analysis (to ensure all warnings and errors 119541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // are emitted). 119641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar if (Diags.hasErrorOccurred()) 119741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar return; 119841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 119941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar switch (D->getKind()) { 120041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::Function: 120141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::Var: 120241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar EmitGlobal(cast<ValueDecl>(D)); 120341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 120441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 120541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::Namespace: 1206662174c82ef46b19a2329c7d37208e1d12dfb7b3Daniel Dunbar ErrorUnsupported(D, "namespace"); 120741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 120841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 120941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // Objective-C Decls 121041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 121141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // Forward declarations, no (immediate) code generation. 121241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCClass: 121341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCCategory: 121441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCForwardProtocol: 121541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCInterface: 121641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 121741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 121841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCProtocol: 121941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar Runtime->GenerateProtocol(cast<ObjCProtocolDecl>(D)); 122041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 122141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 122241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCCategoryImpl: 1223af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // Categories have properties but don't support synthesize so we 1224af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // can ignore them here. 1225af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 122641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar Runtime->GenerateCategory(cast<ObjCCategoryImplDecl>(D)); 122741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 122841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 1229af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar case Decl::ObjCImplementation: { 1230af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCImplementationDecl *OMD = cast<ObjCImplementationDecl>(D); 1231af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar EmitObjCPropertyImplementations(OMD); 1232af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar Runtime->GenerateClass(OMD); 123341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 1234af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar } 123541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCMethod: { 123641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar ObjCMethodDecl *OMD = cast<ObjCMethodDecl>(D); 123741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // If this is not a prototype, emit the body. 123841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar if (OMD->getBody()) 123941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar CodeGenFunction(*this).GenerateObjCMethod(OMD); 124041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 124141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar } 124241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCCompatibleAlias: 1243305c658ebce84bb9833fc0e7675554656453b8e8Fariborz Jahanian // compatibility-alias is a directive and has no code gen. 124441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 124541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 124641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::LinkageSpec: { 124741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar LinkageSpecDecl *LSD = cast<LinkageSpecDecl>(D); 124841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar if (LSD->getLanguage() == LinkageSpecDecl::lang_cxx) 1249488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar ErrorUnsupported(LSD, "linkage spec"); 125041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // FIXME: implement C++ linkage, C linkage works mostly by C 125141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // language reuse already. 125241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 125341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar } 125441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 125541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::FileScopeAsm: { 125641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar FileScopeAsmDecl *AD = cast<FileScopeAsmDecl>(D); 125741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar std::string AsmString(AD->getAsmString()->getStrData(), 125841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar AD->getAsmString()->getByteLength()); 125941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 126041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar const std::string &S = getModule().getModuleInlineAsm(); 126141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar if (S.empty()) 126241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar getModule().setModuleInlineAsm(AsmString); 126341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar else 126441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar getModule().setModuleInlineAsm(S + '\n' + AsmString); 126541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 126641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar } 126741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 126841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar default: 126941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // Make sure we handled everything we should, every other kind is 127041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // a non-top-level decl. FIXME: Would be nice to have an 127141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // isTopLevelDeclKind function. Need to recode Decl::Kind to do 127241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // that easily. 127341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar assert(isa<TypeDecl>(D) && "Unsupported decl kind"); 127441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar } 127541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar} 1276