CodeGenModule.cpp revision e21c4b829c9e69c20f4baab4916e05cdb786d9ae
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) 3790a904309c79977fcba2ff0542e2e4cd8e3c3fafMike Stump : BlockModule(C, M, TD, Types, *this), Context(C), Features(LO), TheModule(M), 382a998148a6823c44d67da347c95eb2ea21f6b986Mike Stump TheTargetData(TD), Diags(diags), Types(C, M, TD), Runtime(0), 392a998148a6823c44d67da347c95eb2ea21f6b986Mike Stump MemCpyFn(0), MemMoveFn(0), MemSetFn(0), CFConstantStringClassRef(0) { 40208ff5e8a073de2a5d15cbe03cab8a4c0d935e28Daniel Dunbar 413c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner if (!Features.ObjC1) 423c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner Runtime = 0; 433c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner else if (!Features.NeXTRuntime) 443c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner Runtime = CreateGNUObjCRuntime(*this); 453c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner else if (Features.ObjCNonFragileABI) 463c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner Runtime = CreateMacNonFragileABIObjCRuntime(*this); 473c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner else 483c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner Runtime = CreateMacObjCRuntime(*this); 49e8b9f5b8ea60983c4a74cb8b63879616b914b65aSanjiv Gupta 50e8b9f5b8ea60983c4a74cb8b63879616b914b65aSanjiv Gupta // If debug info generation is enabled, create the CGDebugInfo object. 5126efc3388adb010984da2f70e1f24e8286e6476dMike Stump DebugInfo = GenerateDebugInfo ? new CGDebugInfo(this) : 0; 522b94fe35edf951a14ecd32b21f7ebcc2e3754c67Chris Lattner} 532b94fe35edf951a14ecd32b21f7ebcc2e3754c67Chris Lattner 542b94fe35edf951a14ecd32b21f7ebcc2e3754c67Chris LattnerCodeGenModule::~CodeGenModule() { 55815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenek delete Runtime; 56815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenek delete DebugInfo; 57815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenek} 58815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenek 59815c78fd9ab8bd5dfe8e8a91b8c6a413e2b8c889Ted Kremenekvoid CodeGenModule::Release() { 600269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar EmitDeferred(); 61219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar EmitAliases(); 62208ff5e8a073de2a5d15cbe03cab8a4c0d935e28Daniel Dunbar if (Runtime) 63208ff5e8a073de2a5d15cbe03cab8a4c0d935e28Daniel Dunbar if (llvm::Function *ObjCInitFunction = Runtime->ModuleInitFunction()) 64208ff5e8a073de2a5d15cbe03cab8a4c0d935e28Daniel Dunbar AddGlobalCtor(ObjCInitFunction); 656bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar EmitCtorList(GlobalCtors, "llvm.global_ctors"); 666bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar EmitCtorList(GlobalDtors, "llvm.global_dtors"); 67532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman EmitAnnotations(); 680269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar EmitLLVMUsed(); 69b681b8ffab2aa016b3897916d5110927c34a584bDaniel Dunbar BindRuntimeGlobals(); 702b94fe35edf951a14ecd32b21f7ebcc2e3754c67Chris Lattner} 715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 72b681b8ffab2aa016b3897916d5110927c34a584bDaniel Dunbarvoid CodeGenModule::BindRuntimeGlobals() { 73f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar // Deal with protecting runtime function names. 74b681b8ffab2aa016b3897916d5110927c34a584bDaniel Dunbar for (unsigned i = 0, e = RuntimeGlobals.size(); i < e; ++i) { 75b681b8ffab2aa016b3897916d5110927c34a584bDaniel Dunbar llvm::GlobalValue *GV = RuntimeGlobals[i].first; 76b681b8ffab2aa016b3897916d5110927c34a584bDaniel Dunbar const std::string &Name = RuntimeGlobals[i].second; 77f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar 78b681b8ffab2aa016b3897916d5110927c34a584bDaniel Dunbar // Discard unused runtime declarations. 79b681b8ffab2aa016b3897916d5110927c34a584bDaniel Dunbar if (GV->isDeclaration() && GV->use_empty()) { 80b681b8ffab2aa016b3897916d5110927c34a584bDaniel Dunbar GV->eraseFromParent(); 810293d540baafbe070c1035611787a81001a4118eDaniel Dunbar continue; 820293d540baafbe070c1035611787a81001a4118eDaniel Dunbar } 830293d540baafbe070c1035611787a81001a4118eDaniel Dunbar 84e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner // See if there is a conflict against a function by setting the name and 85e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner // seeing if we got the desired name. 86e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner GV->setName(Name); 87e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner if (GV->isName(Name.c_str())) 88e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner continue; // Yep, it worked! 89e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner 90e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner GV->setName(""); // Zap the bogus name until we work out the conflict. 91b681b8ffab2aa016b3897916d5110927c34a584bDaniel Dunbar llvm::GlobalValue *Conflict = TheModule.getNamedValue(Name); 92e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner assert(Conflict && "Must have conflicted!"); 93e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner 94e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner // Decide which version to take. If the conflict is a definition 95e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner // we are forced to take that, otherwise assume the runtime 96e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner // knows best. 97b681b8ffab2aa016b3897916d5110927c34a584bDaniel Dunbar 98e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner // FIXME: This will fail phenomenally when the conflict is the 99e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner // wrong type of value. Just bail on it for now. This should 100e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner // really reuse something inside the LLVM Linker code. 101e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner assert(GV->getValueID() == Conflict->getValueID() && 102e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner "Unable to resolve conflict between globals of different types."); 103e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner if (!Conflict->isDeclaration()) { 104e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner llvm::Value *Casted = 105e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner llvm::ConstantExpr::getBitCast(Conflict, GV->getType()); 106e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner GV->replaceAllUsesWith(Casted); 107e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner GV->eraseFromParent(); 108e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner } else { 109e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner GV->takeName(Conflict); 110e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner llvm::Value *Casted = 111e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner llvm::ConstantExpr::getBitCast(GV, Conflict->getType()); 112e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner Conflict->replaceAllUsesWith(Casted); 113e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner Conflict->eraseFromParent(); 114e21c4b829c9e69c20f4baab4916e05cdb786d9aeChris Lattner } 115f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar } 116f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar} 117f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar 118488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar/// ErrorUnsupported - Print out an error that codegen doesn't support the 1192c8569d5f43f7de1fb993e84c95ea571dd9ac55eChris Lattner/// specified stmt yet. 12090df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbarvoid CodeGenModule::ErrorUnsupported(const Stmt *S, const char *Type, 12190df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar bool OmitOnError) { 12290df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar if (OmitOnError && getDiags().hasErrorOccurred()) 12390df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar return; 124488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar unsigned DiagID = getDiags().getCustomDiagID(Diagnostic::Error, 12556b8001b42bd603ef593e3cb278d8b9b9ba26ca9Daniel Dunbar "cannot compile this %0 yet"); 1262c8569d5f43f7de1fb993e84c95ea571dd9ac55eChris Lattner std::string Msg = Type; 1270a14eee528a901c16f0e288fbc10a3abc1660d87Chris Lattner getDiags().Report(Context.getFullLoc(S->getLocStart()), DiagID) 1280a14eee528a901c16f0e288fbc10a3abc1660d87Chris Lattner << Msg << S->getSourceRange(); 1292c8569d5f43f7de1fb993e84c95ea571dd9ac55eChris Lattner} 13058c3f9ec11cbe852a518bf2f83af46f938b7b852Chris Lattner 131488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar/// ErrorUnsupported - Print out an error that codegen doesn't support the 132c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner/// specified decl yet. 13390df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbarvoid CodeGenModule::ErrorUnsupported(const Decl *D, const char *Type, 13490df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar bool OmitOnError) { 13590df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar if (OmitOnError && getDiags().hasErrorOccurred()) 13690df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar return; 137488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar unsigned DiagID = getDiags().getCustomDiagID(Diagnostic::Error, 13856b8001b42bd603ef593e3cb278d8b9b9ba26ca9Daniel Dunbar "cannot compile this %0 yet"); 139c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner std::string Msg = Type; 1400a14eee528a901c16f0e288fbc10a3abc1660d87Chris Lattner getDiags().Report(Context.getFullLoc(D->getLocation()), DiagID) << Msg; 141c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner} 142c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner 14341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar/// setGlobalVisibility - Set the visibility for the given LLVM 14441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar/// GlobalValue according to the given clang AST visibility value. 14541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbarstatic void setGlobalVisibility(llvm::GlobalValue *GV, 14641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar VisibilityAttr::VisibilityTypes Vis) { 1474f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman switch (Vis) { 1484f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman default: assert(0 && "Unknown visibility!"); 1494f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman case VisibilityAttr::DefaultVisibility: 1504f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman GV->setVisibility(llvm::GlobalValue::DefaultVisibility); 1514f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman break; 1524f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman case VisibilityAttr::HiddenVisibility: 1534f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman GV->setVisibility(llvm::GlobalValue::HiddenVisibility); 1544f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman break; 1554f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman case VisibilityAttr::ProtectedVisibility: 1564f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman GV->setVisibility(llvm::GlobalValue::ProtectedVisibility); 1574f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman break; 1584f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman } 1594f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman} 1604f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman 1615f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// \brief Retrieves the mangled name for the given declaration. 1625f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// 1635f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// If the given declaration requires a mangled name, returns an 164c50689bd1e8788a7fc8f19070b7505ff95034979Chris Lattner/// const char* containing the mangled name. Otherwise, returns 165c50689bd1e8788a7fc8f19070b7505ff95034979Chris Lattner/// the unmangled name. 1665f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// 1675f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// FIXME: Returning an IdentifierInfo* here is a total hack. We 1685f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// really need some kind of string abstraction that either stores a 1695f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// mangled name or stores an IdentifierInfo*. This will require 170b5da3e94b72a0106abd69c2a84bf650e773fa4acDaniel Dunbar/// changes to the GlobalDeclMap, too. (I disagree, I think what we 171b5da3e94b72a0106abd69c2a84bf650e773fa4acDaniel Dunbar/// actually need is for Sema to provide some notion of which Decls 172b5da3e94b72a0106abd69c2a84bf650e773fa4acDaniel Dunbar/// refer to the same semantic decl. We shouldn't need to mangle the 173b5da3e94b72a0106abd69c2a84bf650e773fa4acDaniel Dunbar/// names and see what comes out the same to figure this out. - DWD) 1745f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// 1755f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// FIXME: Performance here is going to be terribly until we start 1765f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// caching mangled names. However, we should fix the problem above 1775f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor/// first. 1786ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregorconst char *CodeGenModule::getMangledName(const NamedDecl *ND) { 179c50689bd1e8788a7fc8f19070b7505ff95034979Chris Lattner // In C, functions with no attributes never need to be mangled. Fastpath them. 180c50689bd1e8788a7fc8f19070b7505ff95034979Chris Lattner if (!getLangOptions().CPlusPlus && !ND->hasAttrs()) { 181c50689bd1e8788a7fc8f19070b7505ff95034979Chris Lattner assert(ND->getIdentifier() && "Attempt to mangle unnamed decl."); 1823c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner return ND->getNameAsCString(); 183c50689bd1e8788a7fc8f19070b7505ff95034979Chris Lattner } 184c50689bd1e8788a7fc8f19070b7505ff95034979Chris Lattner 1856ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregor llvm::SmallString<256> Name; 1866ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregor llvm::raw_svector_ostream Out(Name); 187fe345572459b69a6b680322fef504b4f8bd98dd7Daniel Dunbar if (!mangleName(ND, Context, Out)) { 188fe345572459b69a6b680322fef504b4f8bd98dd7Daniel Dunbar assert(ND->getIdentifier() && "Attempt to mangle unnamed decl."); 1893c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner return ND->getNameAsCString(); 190fe345572459b69a6b680322fef504b4f8bd98dd7Daniel Dunbar } 1915f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor 1926ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregor Name += '\0'; 1933c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner return MangledNames.GetOrCreateValue(Name.begin(), Name.end()).getKeyData(); 1945f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor} 1955f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor 1966d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner/// AddGlobalCtor - Add a function to the list that will be called before 1976d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner/// main() runs. 1986bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbarvoid CodeGenModule::AddGlobalCtor(llvm::Function * Ctor, int Priority) { 19949988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // FIXME: Type coercion of void()* types. 2006bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar GlobalCtors.push_back(std::make_pair(Ctor, Priority)); 2016d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner} 2026d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner 2036bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar/// AddGlobalDtor - Add a function to the list that will be called 2046bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar/// when the module is unloaded. 2056bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbarvoid CodeGenModule::AddGlobalDtor(llvm::Function * Dtor, int Priority) { 20649988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // FIXME: Type coercion of void()* types. 2076bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar GlobalDtors.push_back(std::make_pair(Dtor, Priority)); 2086bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar} 2096bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar 2106bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbarvoid CodeGenModule::EmitCtorList(const CtorList &Fns, const char *GlobalName) { 2116bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar // Ctor function type is void()*. 2126bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar llvm::FunctionType* CtorFTy = 2136bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar llvm::FunctionType::get(llvm::Type::VoidTy, 2146bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar std::vector<const llvm::Type*>(), 2156bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar false); 2166bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar llvm::Type *CtorPFTy = llvm::PointerType::getUnqual(CtorFTy); 2176bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar 2186bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar // Get the type of a ctor entry, { i32, void ()* }. 219572cf09ae8a78af1c56d40b016ec4cf1837163acChris Lattner llvm::StructType* CtorStructTy = 2206bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar llvm::StructType::get(llvm::Type::Int32Ty, 2216bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar llvm::PointerType::getUnqual(CtorFTy), NULL); 2226bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar 2236bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar // Construct the constructor and destructor arrays. 2246bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar std::vector<llvm::Constant*> Ctors; 2256bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar for (CtorList::const_iterator I = Fns.begin(), E = Fns.end(); I != E; ++I) { 2266bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar std::vector<llvm::Constant*> S; 2276bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar S.push_back(llvm::ConstantInt::get(llvm::Type::Int32Ty, I->second, false)); 2286bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar S.push_back(llvm::ConstantExpr::getBitCast(I->first, CtorPFTy)); 2296bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar Ctors.push_back(llvm::ConstantStruct::get(CtorStructTy, S)); 2306bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar } 2316bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar 2326bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar if (!Ctors.empty()) { 2336bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar llvm::ArrayType *AT = llvm::ArrayType::get(CtorStructTy, Ctors.size()); 2346bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar new llvm::GlobalVariable(AT, false, 235572cf09ae8a78af1c56d40b016ec4cf1837163acChris Lattner llvm::GlobalValue::AppendingLinkage, 2366bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar llvm::ConstantArray::get(AT, Ctors), 2376bfed7e411adc46eaf616371f85f68305c6e6257Daniel Dunbar GlobalName, 238572cf09ae8a78af1c56d40b016ec4cf1837163acChris Lattner &TheModule); 2396d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner } 2406d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner} 2416d39760673df2e92d9293f46ff8c66dad6ab5e0aChris Lattner 242532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begemanvoid CodeGenModule::EmitAnnotations() { 243532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman if (Annotations.empty()) 244532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman return; 245532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman 246532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman // Create a new global variable for the ConstantStruct in the Module. 247532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman llvm::Constant *Array = 248532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman llvm::ConstantArray::get(llvm::ArrayType::get(Annotations[0]->getType(), 249532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman Annotations.size()), 250532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman Annotations); 251532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman llvm::GlobalValue *gv = 252532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman new llvm::GlobalVariable(Array->getType(), false, 253532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman llvm::GlobalValue::AppendingLinkage, Array, 254532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman "llvm.global.annotations", &TheModule); 255532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman gv->setSection("llvm.metadata"); 256532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman} 257532485cc6c078d9e51b517c6bbd8984deb17f0feNate Begeman 2585c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbarvoid CodeGenModule::SetGlobalValueAttributes(const Decl *D, 2595c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar bool IsInternal, 2605c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar bool IsInline, 2615c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar llvm::GlobalValue *GV, 2625c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar bool ForDefinition) { 26349988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // FIXME: Set up linkage and many other things. Note, this is a simple 264d4cbda6292b321c2e7dce7f039d92918fee99b3aNuno Lopes // approximation of what we really want. 265219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar if (!ForDefinition) { 266219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar // Only a few attributes are set on declarations. 2672f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov if (D->getAttr<DLLImportAttr>()) { 2682f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov // The dllimport attribute is overridden by a subsequent declaration as 2692f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov // dllexport. 2703ef5db646a6f66bb23146c3e506c294f31adf018Sebastian Redl if (!D->getAttr<DLLExportAttr>()) { 2712f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov // dllimport attribute can be applied only to function decls, not to 2722f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov // definitions. 2732f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 2742f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov if (!FD->getBody()) 2752f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov GV->setLinkage(llvm::Function::DLLImportLinkage); 2762f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov } else 2772f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov GV->setLinkage(llvm::Function::DLLImportLinkage); 2783ef5db646a6f66bb23146c3e506c294f31adf018Sebastian Redl } 2795e27314eb5a9cba7997cf9f6fc82428d99667077Daniel Dunbar } else if (D->getAttr<WeakAttr>() || 2805e27314eb5a9cba7997cf9f6fc82428d99667077Daniel Dunbar D->getAttr<WeakImportAttr>()) { 2815e27314eb5a9cba7997cf9f6fc82428d99667077Daniel Dunbar // "extern_weak" is overloaded in LLVM; we probably should have 2825e27314eb5a9cba7997cf9f6fc82428d99667077Daniel Dunbar // separate linkage types for this. 283e3fedbeee8a014cd4f4e7cad8e7f6059eae12410Duncan Sands GV->setLinkage(llvm::Function::ExternalWeakLinkage); 2845e27314eb5a9cba7997cf9f6fc82428d99667077Daniel Dunbar } 285219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar } else { 286219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar if (IsInternal) { 287219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar GV->setLinkage(llvm::Function::InternalLinkage); 288219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar } else { 2892f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov if (D->getAttr<DLLExportAttr>()) { 2902f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 2912f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov // The dllexport attribute is ignored for undefined symbols. 2922f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov if (FD->getBody()) 2932f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov GV->setLinkage(llvm::Function::DLLExportLinkage); 2942f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov } else 2952f402708e62f89fb875442802e3d3f20fc909d33Anton Korobeynikov GV->setLinkage(llvm::Function::DLLExportLinkage); 2965e27314eb5a9cba7997cf9f6fc82428d99667077Daniel Dunbar } else if (D->getAttr<WeakAttr>() || D->getAttr<WeakImportAttr>() || 2975e27314eb5a9cba7997cf9f6fc82428d99667077Daniel Dunbar IsInline) 298286acbdbe0c82e9a6bcad5fca3c4fa582f3f1a2cMike Stump GV->setLinkage(llvm::Function::WeakAnyLinkage); 299219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar } 3000dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar } 301d4cbda6292b321c2e7dce7f039d92918fee99b3aNuno Lopes 30249988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // FIXME: Figure out the relative priority of the attribute, 30349988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // -fvisibility, and private_extern. 3040dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar if (const VisibilityAttr *attr = D->getAttr<VisibilityAttr>()) 30541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar setGlobalVisibility(GV, attr->getVisibility()); 306d4cbda6292b321c2e7dce7f039d92918fee99b3aNuno Lopes // FIXME: else handle -fvisibility 307a735ad8be5536a1cd3e9817ec27dfeb2a0c1d5caDaniel Dunbar 308eda9a5ec380f172f4e0063744eb796144a125480Daniel Dunbar // Prefaced with special LLVM marker to indicate that the name 309eda9a5ec380f172f4e0063744eb796144a125480Daniel Dunbar // should not be munged. 310eda9a5ec380f172f4e0063744eb796144a125480Daniel Dunbar if (const AsmLabelAttr *ALA = D->getAttr<AsmLabelAttr>()) 311a735ad8be5536a1cd3e9817ec27dfeb2a0c1d5caDaniel Dunbar GV->setName("\01" + ALA->getLabel()); 31217f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar 31317f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar if (const SectionAttr *SA = D->getAttr<SectionAttr>()) 31417f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar GV->setSection(SA->getName()); 3155c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar 3165c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar // Only add to llvm.used when we see a definition, otherwise we 3175c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar // might add multiple times or risk the value being replaced by a 3185c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar // subsequent RAUW. 3195c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar if (ForDefinition) { 3205c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar if (D->getAttr<UsedAttr>()) 3215c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar AddUsedGlobal(GV); 3225c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar } 323d4cbda6292b321c2e7dce7f039d92918fee99b3aNuno Lopes} 324d4cbda6292b321c2e7dce7f039d92918fee99b3aNuno Lopes 325761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patelvoid CodeGenModule::SetFunctionAttributes(const Decl *D, 32645c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar const CGFunctionInfo &Info, 327b768807c49a1c7085def099b848631856af766faDaniel Dunbar llvm::Function *F) { 328761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patel AttributeListType AttributeList; 32988b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar ConstructAttributeList(Info, D, AttributeList); 330c134fcb0d7989fe6937e47e6216637647e074aefEli Friedman 331761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patel F->setAttributes(llvm::AttrListPtr::get(AttributeList.begin(), 332761d7f78e2dac7ea5f35828c2271e60d91e106ceDevang Patel AttributeList.size())); 333ff4a2d9e2c1ddbf87e00e2a36ae341faf03eafb3Eli Friedman 334ff4a2d9e2c1ddbf87e00e2a36ae341faf03eafb3Eli Friedman // Set the appropriate calling convention for the Function. 33545c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar if (D->getAttr<FastCallAttr>()) 336f1c9c09e2e2220e4bbfb7e9d8adf9bf2c2406b80Anton Korobeynikov F->setCallingConv(llvm::CallingConv::X86_FastCall); 337f1c9c09e2e2220e4bbfb7e9d8adf9bf2c2406b80Anton Korobeynikov 338f1c9c09e2e2220e4bbfb7e9d8adf9bf2c2406b80Anton Korobeynikov if (D->getAttr<StdCallAttr>()) 339f1c9c09e2e2220e4bbfb7e9d8adf9bf2c2406b80Anton Korobeynikov F->setCallingConv(llvm::CallingConv::X86_StdCall); 340f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar} 341f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar 342f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar/// SetFunctionAttributesForDefinition - Set function attributes 343f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar/// specific to a function definition. 344219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbarvoid CodeGenModule::SetFunctionAttributesForDefinition(const Decl *D, 345219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar llvm::Function *F) { 346219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar if (isa<ObjCMethodDecl>(D)) { 347219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar SetGlobalValueAttributes(D, true, false, F, true); 348219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar } else { 349219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar const FunctionDecl *FD = cast<FunctionDecl>(D); 350219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar SetGlobalValueAttributes(FD, FD->getStorageClass() == FunctionDecl::Static, 351219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar FD->isInline(), F, true); 352219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar } 353219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 35474ac74ae244c501027924c99f2a33559a1e23b53Daniel Dunbar if (!Features.Exceptions && !Features.ObjCNonFragileABI) 355f93349f3ec4d69eafba42436c33aaa91bfca7e70Daniel Dunbar F->addFnAttr(llvm::Attribute::NoUnwind); 356af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar 357af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar if (D->getAttr<AlwaysInlineAttr>()) 358af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar F->addFnAttr(llvm::Attribute::AlwaysInline); 35981ebbde0fb30a40df0f5e913d8a1f71c383d271aAnders Carlsson 36081ebbde0fb30a40df0f5e913d8a1f71c383d271aAnders Carlsson if (D->getAttr<NoinlineAttr>()) 36181ebbde0fb30a40df0f5e913d8a1f71c383d271aAnders Carlsson F->addFnAttr(llvm::Attribute::NoInline); 362f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar} 363f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar 364f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbarvoid CodeGenModule::SetMethodAttributes(const ObjCMethodDecl *MD, 365f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar llvm::Function *F) { 366541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar SetFunctionAttributes(MD, getTypes().getFunctionInfo(MD), F); 367f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar 368219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar SetFunctionAttributesForDefinition(MD, F); 369f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar} 370f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar 371f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbarvoid CodeGenModule::SetFunctionAttributes(const FunctionDecl *FD, 372f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar llvm::Function *F) { 373541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar SetFunctionAttributes(FD, getTypes().getFunctionInfo(FD), F); 37445c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar 375219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar SetGlobalValueAttributes(FD, FD->getStorageClass() == FunctionDecl::Static, 376219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar FD->isInline(), F, false); 377219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar} 378219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 37945c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar 380219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbarvoid CodeGenModule::EmitAliases() { 381219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar for (unsigned i = 0, e = Aliases.size(); i != e; ++i) { 3825e1e1f95c98b1add70c238093bbd5dc8d4f9c4e9Daniel Dunbar const ValueDecl *D = Aliases[i]; 383219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar const AliasAttr *AA = D->getAttr<AliasAttr>(); 384219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 385219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar // This is something of a hack, if the FunctionDecl got overridden 386219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar // then its attributes will be moved to the new declaration. In 387219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar // this case the current decl has no alias attribute, but we will 388219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar // eventually see it. 389219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar if (!AA) 390219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar continue; 391219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 392219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar const std::string& aliaseeName = AA->getAliasee(); 3935e1e1f95c98b1add70c238093bbd5dc8d4f9c4e9Daniel Dunbar llvm::GlobalValue *aliasee = getModule().getNamedValue(aliaseeName); 394219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar if (!aliasee) { 395219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar // FIXME: This isn't unsupported, this is just an error, which 396219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar // sema should catch, but... 397219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar ErrorUnsupported(D, "alias referencing a missing function"); 398219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar continue; 399219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar } 400219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 401219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar llvm::GlobalValue *GA = 402219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar new llvm::GlobalAlias(aliasee->getType(), 403219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar llvm::Function::ExternalLinkage, 4046ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregor getMangledName(D), aliasee, 4055f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor &getModule()); 406219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 4075f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor llvm::GlobalValue *&Entry = GlobalDeclMap[getMangledName(D)]; 408219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar if (Entry) { 409219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar // If we created a dummy function for this then replace it. 410219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar GA->takeName(Entry); 411219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 412219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar llvm::Value *Casted = 413219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar llvm::ConstantExpr::getBitCast(GA, Entry->getType()); 414219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar Entry->replaceAllUsesWith(Casted); 415219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar Entry->eraseFromParent(); 416ff4a2d9e2c1ddbf87e00e2a36ae341faf03eafb3Eli Friedman 417219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar Entry = GA; 418219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar } 419219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 420219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar // Alias should never be internal or inline. 421219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar SetGlobalValueAttributes(D, false, false, GA, true); 422219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar } 423ff4a2d9e2c1ddbf87e00e2a36ae341faf03eafb3Eli Friedman} 424ff4a2d9e2c1ddbf87e00e2a36ae341faf03eafb3Eli Friedman 4250269871c9cba493f76237175ab60313406f3bafaDaniel Dunbarvoid CodeGenModule::AddUsedGlobal(llvm::GlobalValue *GV) { 4260269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar assert(!GV->isDeclaration() && 4270269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar "Only globals with definition can force usage."); 4280269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar llvm::Type *i8PTy = llvm::PointerType::getUnqual(llvm::Type::Int8Ty); 4290269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar LLVMUsed.push_back(llvm::ConstantExpr::getBitCast(GV, i8PTy)); 4300269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar} 4310269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar 4320269871c9cba493f76237175ab60313406f3bafaDaniel Dunbarvoid CodeGenModule::EmitLLVMUsed() { 4330269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar // Don't create llvm.used if there is no need. 4340269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar if (LLVMUsed.empty()) 4350269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar return; 4360269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar 4370269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar llvm::ArrayType *ATy = llvm::ArrayType::get(LLVMUsed[0]->getType(), 4380269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar LLVMUsed.size()); 4390269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar llvm::GlobalVariable *GV = 4400269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar new llvm::GlobalVariable(ATy, false, 4410269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar llvm::GlobalValue::AppendingLinkage, 4420269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar llvm::ConstantArray::get(ATy, LLVMUsed), 4430269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar "llvm.used", &getModule()); 4440269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar 4450269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar GV->setSection("llvm.metadata"); 4460269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar} 4470269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar 4480269871c9cba493f76237175ab60313406f3bafaDaniel Dunbarvoid CodeGenModule::EmitDeferred() { 4490269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar // Emit code for any deferred decl which was used. Since a 4500269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar // previously unused static decl may become used during the 4510269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar // generation of code for a static function, iterate until no 4520269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar // changes are made. 4534c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman bool Changed; 4544c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman do { 4554c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman Changed = false; 456b723f7520bcce5f13ccaae557c16a1e7133b6908Anders Carlsson 4570269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar for (std::list<const ValueDecl*>::iterator i = DeferredDecls.begin(), 4580269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar e = DeferredDecls.end(); i != e; ) { 459b723f7520bcce5f13ccaae557c16a1e7133b6908Anders Carlsson const ValueDecl *D = *i; 460b723f7520bcce5f13ccaae557c16a1e7133b6908Anders Carlsson 4616f7e2eee917a136ffc36834f020782b3f15d8fa6Eli Friedman // Check if we have used a decl with the same name 4626f7e2eee917a136ffc36834f020782b3f15d8fa6Eli Friedman // FIXME: The AST should have some sort of aggregate decls or 4636f7e2eee917a136ffc36834f020782b3f15d8fa6Eli Friedman // global symbol map. 464219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar // FIXME: This is missing some important cases. For example, we 46573241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar // need to check for uses in an alias. 4665f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor if (!GlobalDeclMap.count(getMangledName(D))) { 467232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar ++i; 468a735ad8be5536a1cd3e9817ec27dfeb2a0c1d5caDaniel Dunbar continue; 469b723f7520bcce5f13ccaae557c16a1e7133b6908Anders Carlsson } 470b723f7520bcce5f13ccaae557c16a1e7133b6908Anders Carlsson 471bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar // Emit the definition. 472bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar EmitGlobalDefinition(D); 473bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 4744c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman // Erase the used decl from the list. 4750269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar i = DeferredDecls.erase(i); 476b723f7520bcce5f13ccaae557c16a1e7133b6908Anders Carlsson 4774c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman // Remember that we made a change. 4784c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman Changed = true; 4794c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman } 4804c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman } while (Changed); 4815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 4825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 4838bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// EmitAnnotateAttr - Generate the llvm::ConstantStruct which contains the 4848bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// annotation information for a given GlobalValue. The annotation struct is 4858bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// {i8 *, i8 *, i8 *, i32}. The first field is a constant expression, the 4863c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar/// GlobalValue being annotated. The second field is the constant string 4878bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// created from the AnnotateAttr's annotation. The third field is a constant 4888bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// string containing the name of the translation unit. The fourth field is 4898bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// the line number in the file of the annotated value declaration. 4908bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// 4918bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// FIXME: this does not unique the annotation string constants, as llvm-gcc 4928bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// appears to. 4938bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman/// 4948bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begemanllvm::Constant *CodeGenModule::EmitAnnotateAttr(llvm::GlobalValue *GV, 4958bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman const AnnotateAttr *AA, 4968bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman unsigned LineNo) { 4978bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::Module *M = &getModule(); 4988bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman 4998bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman // get [N x i8] constants for the annotation string, and the filename string 5008bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman // which are the 2nd and 3rd elements of the global annotation structure. 5018bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman const llvm::Type *SBP = llvm::PointerType::getUnqual(llvm::Type::Int8Ty); 5028bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::Constant *anno = llvm::ConstantArray::get(AA->getAnnotation(), true); 5038bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::Constant *unit = llvm::ConstantArray::get(M->getModuleIdentifier(), 5048bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman true); 5058bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman 5068bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman // Get the two global values corresponding to the ConstantArrays we just 5078bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman // created to hold the bytes of the strings. 5088bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::GlobalValue *annoGV = 5098bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman new llvm::GlobalVariable(anno->getType(), false, 5108bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::GlobalValue::InternalLinkage, anno, 5118bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman GV->getName() + ".str", M); 5128bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman // translation unit name string, emitted into the llvm.metadata section. 5138bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::GlobalValue *unitGV = 5148bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman new llvm::GlobalVariable(unit->getType(), false, 5158bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::GlobalValue::InternalLinkage, unit, ".str", M); 5168bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman 5178bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman // Create the ConstantStruct that is the global annotion. 5188bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::Constant *Fields[4] = { 5198bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::ConstantExpr::getBitCast(GV, SBP), 5208bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::ConstantExpr::getBitCast(annoGV, SBP), 5218bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::ConstantExpr::getBitCast(unitGV, SBP), 5228bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman llvm::ConstantInt::get(llvm::Type::Int32Ty, LineNo) 5238bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman }; 5248bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman return llvm::ConstantStruct::get(Fields, 4, false); 5258bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman} 5268bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman 52773241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbarbool CodeGenModule::MayDeferGeneration(const ValueDecl *Global) { 5285c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar // Never defer when EmitAllDecls is specified or the decl has 5295c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar // attribute used. 5305c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar if (Features.EmitAllDecls || Global->getAttr<UsedAttr>()) 53173241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar return false; 532bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 533bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(Global)) { 53473241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar // Constructors and destructors should never be deferred. 53573241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar if (FD->getAttr<ConstructorAttr>() || FD->getAttr<DestructorAttr>()) 53673241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar return false; 53773241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar 53873241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar if (FD->getStorageClass() != FunctionDecl::Static) 53973241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar return false; 54073241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar } else { 54173241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar const VarDecl *VD = cast<VarDecl>(Global); 54273241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar assert(VD->isFileVarDecl() && "Invalid decl."); 54373241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar 54473241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar if (VD->getStorageClass() != VarDecl::Static) 54573241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar return false; 54673241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar } 54773241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar 54873241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar return true; 54973241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar} 55073241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar 55173241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbarvoid CodeGenModule::EmitGlobal(const ValueDecl *Global) { 5525e1e1f95c98b1add70c238093bbd5dc8d4f9c4e9Daniel Dunbar // Aliases are deferred until code for everything else has been 5535e1e1f95c98b1add70c238093bbd5dc8d4f9c4e9Daniel Dunbar // emitted. 5545e1e1f95c98b1add70c238093bbd5dc8d4f9c4e9Daniel Dunbar if (Global->getAttr<AliasAttr>()) { 5555e1e1f95c98b1add70c238093bbd5dc8d4f9c4e9Daniel Dunbar Aliases.push_back(Global); 5565e1e1f95c98b1add70c238093bbd5dc8d4f9c4e9Daniel Dunbar return; 5575e1e1f95c98b1add70c238093bbd5dc8d4f9c4e9Daniel Dunbar } 558219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 5595e1e1f95c98b1add70c238093bbd5dc8d4f9c4e9Daniel Dunbar if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(Global)) { 56073241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar // Forward declarations are emitted lazily on first use. 56173241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar if (!FD->isThisDeclarationADefinition()) 56273241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar return; 5630269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar } else { 5640269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar const VarDecl *VD = cast<VarDecl>(Global); 565bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar assert(VD->isFileVarDecl() && "Cannot emit local var decl as global."); 566bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 56773241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar // Forward declarations are emitted lazily on first use. 5687542bca16b63c84e401b44b586ac3378aed446c5Daniel Dunbar if (!VD->getInit() && VD->hasExternalStorage()) 56973241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar return; 5704c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman } 5714c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman 57273241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar // Defer code generation when possible. 57373241dfeb5c498255b662984cca369fd28ec3147Daniel Dunbar if (MayDeferGeneration(Global)) { 5740269871c9cba493f76237175ab60313406f3bafaDaniel Dunbar DeferredDecls.push_back(Global); 575bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar return; 576bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } 577bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 578bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar // Otherwise emit the definition. 579bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar EmitGlobalDefinition(Global); 5804c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman} 5814c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman 582bd012ff1fa088181646a784f385b28867372d434Daniel Dunbarvoid CodeGenModule::EmitGlobalDefinition(const ValueDecl *D) { 583bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 584bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar EmitGlobalFunctionDefinition(FD); 585bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } else if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { 586bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar EmitGlobalVarDefinition(VD); 587bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } else { 588bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar assert(0 && "Invalid argument to EmitGlobalDefinition()"); 589bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } 590bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar} 591bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 5929986eabd4423d867262c358ca62f94a60ac58412Daniel Dunbar llvm::Constant *CodeGenModule::GetAddrOfGlobalVar(const VarDecl *D) { 59377ba708819285931932ecd33691a672bb59d221aEli Friedman assert(D->hasGlobalStorage() && "Not a global variable"); 59477ba708819285931932ecd33691a672bb59d221aEli Friedman 595bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar QualType ASTTy = D->getType(); 596bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar const llvm::Type *Ty = getTypes().ConvertTypeForMem(ASTTy); 5979986eabd4423d867262c358ca62f94a60ac58412Daniel Dunbar const llvm::Type *PTy = llvm::PointerType::get(Ty, ASTTy.getAddressSpace()); 598bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 5993c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar // Lookup the entry, lazily creating it if necessary. 6005f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor llvm::GlobalValue *&Entry = GlobalDeclMap[getMangledName(D)]; 60149988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar if (!Entry) { 60249988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar llvm::GlobalVariable *GV = 60349988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar new llvm::GlobalVariable(Ty, false, 60449988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar llvm::GlobalValue::ExternalLinkage, 6056ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregor 0, getMangledName(D), &getModule(), 6065f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor 0, ASTTy.getAddressSpace()); 60749988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar Entry = GV; 60849988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar 60949988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // Handle things which are present even on external declarations. 61049988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar 61149988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // FIXME: This code is overly simple and should be merged with 61249988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // other global handling. 61349988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar 61449988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar GV->setConstant(D->getType().isConstant(Context)); 61549988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar 616eda9a5ec380f172f4e0063744eb796144a125480Daniel Dunbar // FIXME: Merge with other attribute handling code. 617eda9a5ec380f172f4e0063744eb796144a125480Daniel Dunbar 61849988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar if (D->getStorageClass() == VarDecl::PrivateExtern) 61949988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar setGlobalVisibility(GV, VisibilityAttr::HiddenVisibility); 620eda9a5ec380f172f4e0063744eb796144a125480Daniel Dunbar 6215e27314eb5a9cba7997cf9f6fc82428d99667077Daniel Dunbar if (D->getAttr<WeakAttr>() || D->getAttr<WeakImportAttr>()) 622e3fedbeee8a014cd4f4e7cad8e7f6059eae12410Duncan Sands GV->setLinkage(llvm::GlobalValue::ExternalWeakLinkage); 6233f75c43bd77e063342bc888ac276daf64ba0ce07Daniel Dunbar 6243f75c43bd77e063342bc888ac276daf64ba0ce07Daniel Dunbar if (const AsmLabelAttr *ALA = D->getAttr<AsmLabelAttr>()) { 6253f75c43bd77e063342bc888ac276daf64ba0ce07Daniel Dunbar // Prefaced with special LLVM marker to indicate that the name 6263f75c43bd77e063342bc888ac276daf64ba0ce07Daniel Dunbar // should not be munged. 6273f75c43bd77e063342bc888ac276daf64ba0ce07Daniel Dunbar GV->setName("\01" + ALA->getLabel()); 6283f75c43bd77e063342bc888ac276daf64ba0ce07Daniel Dunbar } 62949988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar } 6303c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar 6319986eabd4423d867262c358ca62f94a60ac58412Daniel Dunbar // Make sure the result is of the correct type. 6329986eabd4423d867262c358ca62f94a60ac58412Daniel Dunbar return llvm::ConstantExpr::getBitCast(Entry, PTy); 633bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar} 634bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 635bd012ff1fa088181646a784f385b28867372d434Daniel Dunbarvoid CodeGenModule::EmitGlobalVarDefinition(const VarDecl *D) { 6368f32f7189b12f67aa4a19bc7c3855b599980eca0Chris Lattner llvm::Constant *Init = 0; 63777ba708819285931932ecd33691a672bb59d221aEli Friedman QualType ASTTy = D->getType(); 63877ba708819285931932ecd33691a672bb59d221aEli Friedman const llvm::Type *VarTy = getTypes().ConvertTypeForMem(ASTTy); 63977ba708819285931932ecd33691a672bb59d221aEli Friedman 6408f32f7189b12f67aa4a19bc7c3855b599980eca0Chris Lattner if (D->getInit() == 0) { 641cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman // This is a tentative definition; tentative definitions are 642cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman // implicitly initialized with { 0 } 643cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman const llvm::Type* InitTy; 644cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman if (ASTTy->isIncompleteArrayType()) { 645cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman // An incomplete array is normally [ TYPE x 0 ], but we need 646cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman // to fix it to [ TYPE x 1 ]. 647cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman const llvm::ArrayType* ATy = cast<llvm::ArrayType>(VarTy); 648cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman InitTy = llvm::ArrayType::get(ATy->getElementType(), 1); 649cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman } else { 650cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman InitTy = VarTy; 651cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman } 652cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman Init = llvm::Constant::getNullValue(InitTy); 65377ba708819285931932ecd33691a672bb59d221aEli Friedman } else { 654bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar Init = EmitConstantExpr(D->getInit()); 6556e656f45ae04b415ba7a4c0c25e55633e2d0ecd0Eli Friedman if (!Init) { 656232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar ErrorUnsupported(D, "static initializer"); 6576e656f45ae04b415ba7a4c0c25e55633e2d0ecd0Eli Friedman QualType T = D->getInit()->getType(); 6586e656f45ae04b415ba7a4c0c25e55633e2d0ecd0Eli Friedman Init = llvm::UndefValue::get(getTypes().ConvertType(T)); 6596e656f45ae04b415ba7a4c0c25e55633e2d0ecd0Eli Friedman } 6608f32f7189b12f67aa4a19bc7c3855b599980eca0Chris Lattner } 66177ba708819285931932ecd33691a672bb59d221aEli Friedman const llvm::Type* InitType = Init->getType(); 6628e53e720b3d7c962e91138a130dbd5d6c2def0e5Devang Patel 6635f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor llvm::GlobalValue *&Entry = GlobalDeclMap[getMangledName(D)]; 6643c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar llvm::GlobalVariable *GV = cast_or_null<llvm::GlobalVariable>(Entry); 6653c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar 66677ba708819285931932ecd33691a672bb59d221aEli Friedman if (!GV) { 66777ba708819285931932ecd33691a672bb59d221aEli Friedman GV = new llvm::GlobalVariable(InitType, false, 66877ba708819285931932ecd33691a672bb59d221aEli Friedman llvm::GlobalValue::ExternalLinkage, 6696ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregor 0, getMangledName(D), 6705f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor &getModule(), 0, ASTTy.getAddressSpace()); 671232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar 672232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar } else if (GV->hasInitializer() && !GV->getInitializer()->isNullValue()) { 673232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // If we already have this global and it has an initializer, then 674232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // we are in the rare situation where we emitted the defining 675232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // declaration of the global and are now being asked to emit a 676232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // definition which would be common. This occurs, for example, in 677232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // the following situation because statics can be emitted out of 678232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // order: 679232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // 680232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // static int x; 681232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // static int *y = &x; 682232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // static int x = 10; 683232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // int **z = &y; 684232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // 685232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // Bail here so we don't blow away the definition. Note that if we 686232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // can't distinguish here if we emitted a definition with a null 687232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar // initializer, but this case is safe. 688232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar assert(!D->getInit() && "Emitting multiple definitions of a decl!"); 689232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar return; 690232350d4faf46ec38d5ff60e11505f9c4fa9535bDaniel Dunbar 6913c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar } else if (GV->getType() != 6923c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar llvm::PointerType::get(InitType, ASTTy.getAddressSpace())) { 69377ba708819285931932ecd33691a672bb59d221aEli Friedman // We have a definition after a prototype with the wrong type. 69477ba708819285931932ecd33691a672bb59d221aEli Friedman // We must make a new GlobalVariable* and update everything that used OldGV 69577ba708819285931932ecd33691a672bb59d221aEli Friedman // (a declaration or tentative definition) with the new GlobalVariable* 69677ba708819285931932ecd33691a672bb59d221aEli Friedman // (which will be a definition). 69777ba708819285931932ecd33691a672bb59d221aEli Friedman // 69877ba708819285931932ecd33691a672bb59d221aEli Friedman // This happens if there is a prototype for a global (e.g. "extern int x[];") 69977ba708819285931932ecd33691a672bb59d221aEli Friedman // and then a definition of a different type (e.g. "int x[10];"). This also 70077ba708819285931932ecd33691a672bb59d221aEli Friedman // happens when an initializer has a different type from the type of the 70177ba708819285931932ecd33691a672bb59d221aEli Friedman // global (this happens with unions). 702cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman // 703cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman // FIXME: This also ends up happening if there's a definition followed by 704cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman // a tentative definition! (Although Sema rejects that construct 705cd5f4aaf0c219189878126d556f35e38fdb8afa1Eli Friedman // at the moment.) 70677ba708819285931932ecd33691a672bb59d221aEli Friedman 70777ba708819285931932ecd33691a672bb59d221aEli Friedman // Save the old global 70877ba708819285931932ecd33691a672bb59d221aEli Friedman llvm::GlobalVariable *OldGV = GV; 70977ba708819285931932ecd33691a672bb59d221aEli Friedman 71077ba708819285931932ecd33691a672bb59d221aEli Friedman // Make a new global with the correct type 71177ba708819285931932ecd33691a672bb59d221aEli Friedman GV = new llvm::GlobalVariable(InitType, false, 71277ba708819285931932ecd33691a672bb59d221aEli Friedman llvm::GlobalValue::ExternalLinkage, 7136ec3668a2608b63473207319f5ceff9bbd22ea51Douglas Gregor 0, getMangledName(D), 7145f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor &getModule(), 0, ASTTy.getAddressSpace()); 71577ba708819285931932ecd33691a672bb59d221aEli Friedman // Steal the name of the old global 71677ba708819285931932ecd33691a672bb59d221aEli Friedman GV->takeName(OldGV); 71777ba708819285931932ecd33691a672bb59d221aEli Friedman 71877ba708819285931932ecd33691a672bb59d221aEli Friedman // Replace all uses of the old global with the new global 71977ba708819285931932ecd33691a672bb59d221aEli Friedman llvm::Constant *NewPtrForOldDecl = 72077ba708819285931932ecd33691a672bb59d221aEli Friedman llvm::ConstantExpr::getBitCast(GV, OldGV->getType()); 72177ba708819285931932ecd33691a672bb59d221aEli Friedman OldGV->replaceAllUsesWith(NewPtrForOldDecl); 72277ba708819285931932ecd33691a672bb59d221aEli Friedman 72377ba708819285931932ecd33691a672bb59d221aEli Friedman // Erase the old global, since it is no longer used. 72477ba708819285931932ecd33691a672bb59d221aEli Friedman OldGV->eraseFromParent(); 72577ba708819285931932ecd33691a672bb59d221aEli Friedman } 72677ba708819285931932ecd33691a672bb59d221aEli Friedman 7273c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar Entry = GV; 7289e32d4b4a7270a9701b7cb454381eeaa4cc42a77Devang Patel 7298bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman if (const AnnotateAttr *AA = D->getAttr<AnnotateAttr>()) { 7308bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman SourceManager &SM = Context.getSourceManager(); 7318bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman AddAnnotation(EmitAnnotateAttr(GV, AA, 732f7cf85b330bedd2877e1371fb0a83e99751ae162Chris Lattner SM.getInstantiationLineNumber(D->getLocation()))); 7338bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman } 7348bd4afeb876fd0015bb808eb2f3de1fe709658a7Nate Begeman 73588a69ad80e1550e9932666e6efa050a5b1223889Chris Lattner GV->setInitializer(Init); 736b381aac9bae6d608c72267dd0ed08ec6369e94e4Nuno Lopes GV->setConstant(D->getType().isConstant(Context)); 7370de40af3a3aa14e3854c0eafeabd08f6762801f9Eli Friedman GV->setAlignment(getContext().getDeclAlignInBytes(D)); 73808d7802a406ee4a7cc18e8fce0c137b8c410ea7cEli Friedman 739ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner if (const VisibilityAttr *attr = D->getAttr<VisibilityAttr>()) 74041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar setGlobalVisibility(GV, attr->getVisibility()); 741ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner // FIXME: else handle -fvisibility 742a735ad8be5536a1cd3e9817ec27dfeb2a0c1d5caDaniel Dunbar 743a735ad8be5536a1cd3e9817ec27dfeb2a0c1d5caDaniel Dunbar if (const AsmLabelAttr *ALA = D->getAttr<AsmLabelAttr>()) { 744a735ad8be5536a1cd3e9817ec27dfeb2a0c1d5caDaniel Dunbar // Prefaced with special LLVM marker to indicate that the name 745a735ad8be5536a1cd3e9817ec27dfeb2a0c1d5caDaniel Dunbar // should not be munged. 746a735ad8be5536a1cd3e9817ec27dfeb2a0c1d5caDaniel Dunbar GV->setName("\01" + ALA->getLabel()); 747a735ad8be5536a1cd3e9817ec27dfeb2a0c1d5caDaniel Dunbar } 74888a69ad80e1550e9932666e6efa050a5b1223889Chris Lattner 74988a69ad80e1550e9932666e6efa050a5b1223889Chris Lattner // Set the llvm linkage type as appropriate. 7508fabd78f1976243cb223fb3e969c6f317d1ae44dChris Lattner if (D->getStorageClass() == VarDecl::Static) 7518fabd78f1976243cb223fb3e969c6f317d1ae44dChris Lattner GV->setLinkage(llvm::Function::InternalLinkage); 7528fabd78f1976243cb223fb3e969c6f317d1ae44dChris Lattner else if (D->getAttr<DLLImportAttr>()) 753ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner GV->setLinkage(llvm::Function::DLLImportLinkage); 754ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner else if (D->getAttr<DLLExportAttr>()) 755ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner GV->setLinkage(llvm::Function::DLLExportLinkage); 7565e27314eb5a9cba7997cf9f6fc82428d99667077Daniel Dunbar else if (D->getAttr<WeakAttr>() || D->getAttr<WeakImportAttr>()) 757286acbdbe0c82e9a6bcad5fca3c4fa582f3f1a2cMike Stump GV->setLinkage(llvm::GlobalVariable::WeakAnyLinkage); 7588fabd78f1976243cb223fb3e969c6f317d1ae44dChris Lattner else { 759ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner // FIXME: This isn't right. This should handle common linkage and other 760ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner // stuff. 761ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner switch (D->getStorageClass()) { 7628fabd78f1976243cb223fb3e969c6f317d1ae44dChris Lattner case VarDecl::Static: assert(0 && "This case handled above"); 763ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner case VarDecl::Auto: 764ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner case VarDecl::Register: 765ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner assert(0 && "Can't have auto or register globals"); 766ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner case VarDecl::None: 767ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner if (!D->getInit()) 768ceb77d909f80d4949ee6177094510413c391cddcDuncan Sands GV->setLinkage(llvm::GlobalVariable::CommonLinkage); 76998883e1e699457697fb8d5ac6d175dd3ee078774Anders Carlsson else 77098883e1e699457697fb8d5ac6d175dd3ee078774Anders Carlsson GV->setLinkage(llvm::GlobalVariable::ExternalLinkage); 771ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner break; 772ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner case VarDecl::Extern: 77349988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // FIXME: common 77449988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar break; 77549988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar 776ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner case VarDecl::PrivateExtern: 77749988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar GV->setVisibility(llvm::GlobalValue::HiddenVisibility); 77849988884c1da4b2200bfe2298a1e41b3f044e8d4Daniel Dunbar // FIXME: common 779ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner break; 780ddee4231e9bdfbac1e1f5385ff1a17fd0e0b0e39Chris Lattner } 78188a69ad80e1550e9932666e6efa050a5b1223889Chris Lattner } 782686226b538e72c5059ab7c9a8f87eb883193b645Sanjiv Gupta 78317f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar if (const SectionAttr *SA = D->getAttr<SectionAttr>()) 78417f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar GV->setSection(SA->getName()); 78517f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar 7865c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar if (D->getAttr<UsedAttr>()) 7875c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar AddUsedGlobal(GV); 7885c61d97ad442b2c0bbecb617c8f21857ce1fff6dDaniel Dunbar 789686226b538e72c5059ab7c9a8f87eb883193b645Sanjiv Gupta // Emit global variable debug information. 790686226b538e72c5059ab7c9a8f87eb883193b645Sanjiv Gupta CGDebugInfo *DI = getDebugInfo(); 791686226b538e72c5059ab7c9a8f87eb883193b645Sanjiv Gupta if(DI) { 79266031a5594bc9a7dc0dc5137c3e7955f835e4639Daniel Dunbar DI->setLocation(D->getLocation()); 793686226b538e72c5059ab7c9a8f87eb883193b645Sanjiv Gupta DI->EmitGlobalVariable(GV, D); 794686226b538e72c5059ab7c9a8f87eb883193b645Sanjiv Gupta } 79588a69ad80e1550e9932666e6efa050a5b1223889Chris Lattner} 7965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 797bd012ff1fa088181646a784f385b28867372d434Daniel Dunbarllvm::GlobalValue * 798d5d31801fc87239436fa349c89dce7797cf13537Daniel DunbarCodeGenModule::EmitForwardFunctionDefinition(const FunctionDecl *D, 79942745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar const llvm::Type *Ty) { 8002136b2e9345c23c26426110873dd97ef5d761ef2Eli Friedman bool DoSetAttributes = true; 8012136b2e9345c23c26426110873dd97ef5d761ef2Eli Friedman if (!Ty) { 802d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar Ty = getTypes().ConvertType(D->getType()); 8032136b2e9345c23c26426110873dd97ef5d761ef2Eli Friedman if (!isa<llvm::FunctionType>(Ty)) { 8042136b2e9345c23c26426110873dd97ef5d761ef2Eli Friedman // This function doesn't have a complete type (for example, the return 8052136b2e9345c23c26426110873dd97ef5d761ef2Eli Friedman // type is an incomplete struct). Use a fake type instead, and make 8062136b2e9345c23c26426110873dd97ef5d761ef2Eli Friedman // sure not to try to set attributes. 8072136b2e9345c23c26426110873dd97ef5d761ef2Eli Friedman Ty = llvm::FunctionType::get(llvm::Type::VoidTy, 8082136b2e9345c23c26426110873dd97ef5d761ef2Eli Friedman std::vector<const llvm::Type*>(), false); 8092136b2e9345c23c26426110873dd97ef5d761ef2Eli Friedman DoSetAttributes = false; 8102136b2e9345c23c26426110873dd97ef5d761ef2Eli Friedman } 8112136b2e9345c23c26426110873dd97ef5d761ef2Eli Friedman } 81242745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar llvm::Function *F = llvm::Function::Create(cast<llvm::FunctionType>(Ty), 81342745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar llvm::Function::ExternalLinkage, 81442745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar getMangledName(D), 81542745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar &getModule()); 8162136b2e9345c23c26426110873dd97ef5d761ef2Eli Friedman if (DoSetAttributes) 8172136b2e9345c23c26426110873dd97ef5d761ef2Eli Friedman SetFunctionAttributes(D, F); 818219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar return F; 819bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar} 820bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 821bd012ff1fa088181646a784f385b28867372d434Daniel Dunbarllvm::Constant *CodeGenModule::GetAddrOfFunction(const FunctionDecl *D) { 8229986eabd4423d867262c358ca62f94a60ac58412Daniel Dunbar QualType ASTTy = D->getType(); 8239986eabd4423d867262c358ca62f94a60ac58412Daniel Dunbar const llvm::Type *Ty = getTypes().ConvertTypeForMem(ASTTy); 8249986eabd4423d867262c358ca62f94a60ac58412Daniel Dunbar const llvm::Type *PTy = llvm::PointerType::get(Ty, ASTTy.getAddressSpace()); 8253c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar 8263c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar // Lookup the entry, lazily creating it if necessary. 8275f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor llvm::GlobalValue *&Entry = GlobalDeclMap[getMangledName(D)]; 8283c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar if (!Entry) 829d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar Entry = EmitForwardFunctionDefinition(D, 0); 830bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 8318f431a554367d2828b82612b456c3a2ce737e799Chris Lattner if (Entry->getType() != PTy) 8328f431a554367d2828b82612b456c3a2ce737e799Chris Lattner return llvm::ConstantExpr::getBitCast(Entry, PTy); 8338f431a554367d2828b82612b456c3a2ce737e799Chris Lattner return Entry; 834bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar} 835bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 836bd012ff1fa088181646a784f385b28867372d434Daniel Dunbarvoid CodeGenModule::EmitGlobalFunctionDefinition(const FunctionDecl *D) { 837d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar const llvm::FunctionType *Ty = 838d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar cast<llvm::FunctionType>(getTypes().ConvertType(D->getType())); 839d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar 840d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar // As a special case, make sure that definitions of K&R function 841d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar // "type foo()" aren't declared as varargs (which forces the backend 842d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar // to do unnecessary work). 843d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar if (Ty->isVarArg() && Ty->getNumParams() == 0 && Ty->isVarArg()) 844d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar Ty = llvm::FunctionType::get(Ty->getReturnType(), 845d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar std::vector<const llvm::Type*>(), 846d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar false); 847d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar 8485f2bfd4811996abb783aa6c7254c56baa6930e8cDouglas Gregor llvm::GlobalValue *&Entry = GlobalDeclMap[getMangledName(D)]; 8493c827a79cb7d04c255db8080e682ee2c6912373dDaniel Dunbar if (!Entry) { 850d5d31801fc87239436fa349c89dce7797cf13537Daniel Dunbar Entry = EmitForwardFunctionDefinition(D, Ty); 85142745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar } else { 85242745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar // If the types mismatch then we have to rewrite the definition. 85342745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar if (Entry->getType() != llvm::PointerType::getUnqual(Ty)) { 85442745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar // Otherwise, we have a definition after a prototype with the 85542745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar // wrong type. F is the Function* for the one with the wrong 85642745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar // type, we must make a new Function* and update everything that 85742745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar // used F (a declaration) with the new Function* (which will be 85842745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar // a definition). 85942745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar // 86042745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar // This happens if there is a prototype for a function 86142745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar // (e.g. "int f()") and then a definition of a different type 86242745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar // (e.g. "int f(int x)"). Start by making a new function of the 86342745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar // correct type, RAUW, then steal the name. 86442745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar llvm::GlobalValue *NewFn = EmitForwardFunctionDefinition(D, Ty); 86542745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar NewFn->takeName(Entry); 86642745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar 86742745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar // Replace uses of F with the Function we will endow with a body. 86842745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar llvm::Constant *NewPtrForOldDecl = 86942745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar llvm::ConstantExpr::getBitCast(NewFn, Entry->getType()); 87042745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar Entry->replaceAllUsesWith(NewPtrForOldDecl); 87142745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar 87242745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar // Ok, delete the old function now, which is dead. 87342745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar assert(Entry->isDeclaration() && "Shouldn't replace non-declaration"); 87442745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar Entry->eraseFromParent(); 87542745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar 87642745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar Entry = NewFn; 87742745815fa4e90bfb07e581d2e5152b2c2db08ffDaniel Dunbar } 878bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } 879bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 880219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar llvm::Function *Fn = cast<llvm::Function>(Entry); 881219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar CodeGenFunction(*this).GenerateCode(D, Fn); 8826379a7a15335e0af543a942efe9cfd514a83dab8Daniel Dunbar 883219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar SetFunctionAttributesForDefinition(D, Fn); 884219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar 885219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar if (const ConstructorAttr *CA = D->getAttr<ConstructorAttr>()) { 886219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar AddGlobalCtor(Fn, CA->getPriority()); 887219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar } else if (const DestructorAttr *DA = D->getAttr<DestructorAttr>()) { 888219df6644e2338ff067471ab0d85f27b88544ac2Daniel Dunbar AddGlobalDtor(Fn, DA->getPriority()); 889bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar } 890bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar} 891bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar 892f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbarllvm::Function * 893f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel DunbarCodeGenModule::CreateRuntimeFunction(const llvm::FunctionType *FTy, 894f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar const std::string &Name) { 895f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar llvm::Function *Fn = llvm::Function::Create(FTy, 896f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar llvm::Function::ExternalLinkage, 897f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar "", &TheModule); 898b681b8ffab2aa016b3897916d5110927c34a584bDaniel Dunbar RuntimeGlobals.push_back(std::make_pair(Fn, Name)); 899f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar return Fn; 900f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar} 901f1968f28869f4e0675450ae39c478a37c5b9abd6Daniel Dunbar 902b681b8ffab2aa016b3897916d5110927c34a584bDaniel Dunbarllvm::GlobalVariable * 903b681b8ffab2aa016b3897916d5110927c34a584bDaniel DunbarCodeGenModule::CreateRuntimeVariable(const llvm::Type *Ty, 904b681b8ffab2aa016b3897916d5110927c34a584bDaniel Dunbar const std::string &Name) { 905b681b8ffab2aa016b3897916d5110927c34a584bDaniel Dunbar llvm::GlobalVariable *GV = 906b681b8ffab2aa016b3897916d5110927c34a584bDaniel Dunbar new llvm::GlobalVariable(Ty, /*Constant=*/false, 907b681b8ffab2aa016b3897916d5110927c34a584bDaniel Dunbar llvm::GlobalValue::ExternalLinkage, 908b681b8ffab2aa016b3897916d5110927c34a584bDaniel Dunbar 0, "", &TheModule); 909b681b8ffab2aa016b3897916d5110927c34a584bDaniel Dunbar RuntimeGlobals.push_back(std::make_pair(GV, Name)); 910b681b8ffab2aa016b3897916d5110927c34a584bDaniel Dunbar return GV; 911b681b8ffab2aa016b3897916d5110927c34a584bDaniel Dunbar} 912b681b8ffab2aa016b3897916d5110927c34a584bDaniel Dunbar 913c5b8806cda286cf41866176ef98011fdaa68da01Chris Lattnervoid CodeGenModule::UpdateCompletedType(const TagDecl *TD) { 914c5b8806cda286cf41866176ef98011fdaa68da01Chris Lattner // Make sure that this type is translated. 915c5b8806cda286cf41866176ef98011fdaa68da01Chris Lattner Types.UpdateCompletedType(TD); 916d86e6bc7ab4388a578daf46e7c76be9122a25072Chris Lattner} 917d86e6bc7ab4388a578daf46e7c76be9122a25072Chris Lattner 918d86e6bc7ab4388a578daf46e7c76be9122a25072Chris Lattner 919bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner/// getBuiltinLibFunction 920c136e6cf237711f9f1324637a0b2cdf6ae8e79e4Mike Stumpllvm::Value *CodeGenModule::getBuiltinLibFunction(unsigned BuiltinID) { 9211426fecdf90dd1986751b9940422e675880ff671Chris Lattner if (BuiltinID > BuiltinFunctions.size()) 9221426fecdf90dd1986751b9940422e675880ff671Chris Lattner BuiltinFunctions.resize(BuiltinID); 923bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 9241426fecdf90dd1986751b9940422e675880ff671Chris Lattner // Cache looked up functions. Since builtin id #0 is invalid we don't reserve 9251426fecdf90dd1986751b9940422e675880ff671Chris Lattner // a slot for it. 9261426fecdf90dd1986751b9940422e675880ff671Chris Lattner assert(BuiltinID && "Invalid Builtin ID"); 927c136e6cf237711f9f1324637a0b2cdf6ae8e79e4Mike Stump llvm::Value *&FunctionSlot = BuiltinFunctions[BuiltinID-1]; 928bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner if (FunctionSlot) 929bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner return FunctionSlot; 930bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 9313e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor assert((Context.BuiltinInfo.isLibFunction(BuiltinID) || 9323e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor Context.BuiltinInfo.isPredefinedLibFunction(BuiltinID)) && 9333e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor "isn't a lib fn"); 934bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 9353e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor // Get the name, skip over the __builtin_ prefix (if necessary). 9363e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor const char *Name = Context.BuiltinInfo.GetName(BuiltinID); 9373e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor if (Context.BuiltinInfo.isLibFunction(BuiltinID)) 9383e41d60eb627dc227c770f1c1c87d06909cf05fdDouglas Gregor Name += 10; 939bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 940bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner // Get the type for the builtin. 941370ab3f1373841d70582feac9e35c3c6b3489f63Douglas Gregor Builtin::Context::GetBuiltinTypeError Error; 942370ab3f1373841d70582feac9e35c3c6b3489f63Douglas Gregor QualType Type = Context.BuiltinInfo.GetBuiltinType(BuiltinID, Context, Error); 943370ab3f1373841d70582feac9e35c3c6b3489f63Douglas Gregor assert(Error == Builtin::Context::GE_None && "Can't get builtin type"); 944370ab3f1373841d70582feac9e35c3c6b3489f63Douglas Gregor 945bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner const llvm::FunctionType *Ty = 946bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner cast<llvm::FunctionType>(getTypes().ConvertType(Type)); 947bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 948bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner // FIXME: This has a serious problem with code like this: 949bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner // void abs() {} 950bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner // ... __builtin_abs(x); 951bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner // The two versions of abs will collide. The fix is for the builtin to win, 952bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner // and for the existing one to be turned into a constantexpr cast of the 953bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner // builtin. In the case where the existing one is a static function, it 954bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner // should just be renamed. 955c5e940fa551840ecd71e8116c316c9131490f5faChris Lattner if (llvm::Function *Existing = getModule().getFunction(Name)) { 956c5e940fa551840ecd71e8116c316c9131490f5faChris Lattner if (Existing->getFunctionType() == Ty && Existing->hasExternalLinkage()) 957c5e940fa551840ecd71e8116c316c9131490f5faChris Lattner return FunctionSlot = Existing; 958c5e940fa551840ecd71e8116c316c9131490f5faChris Lattner assert(Existing == 0 && "FIXME: Name collision"); 959c5e940fa551840ecd71e8116c316c9131490f5faChris Lattner } 960bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 9614667c4a309f7d49f858e14c4c2462fe595bcc536Chris Lattner llvm::GlobalValue *&ExistingFn = 9624667c4a309f7d49f858e14c4c2462fe595bcc536Chris Lattner GlobalDeclMap[getContext().Idents.get(Name).getName()]; 9635b60a0e369521825f892d755150255645d923646Chris Lattner assert(!ExistingFn && "Asking for the same builtin multiple times?"); 964c136e6cf237711f9f1324637a0b2cdf6ae8e79e4Mike Stump 965bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner // FIXME: param attributes for sext/zext etc. 9664667c4a309f7d49f858e14c4c2462fe595bcc536Chris Lattner return FunctionSlot = ExistingFn = 9674c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman llvm::Function::Create(Ty, llvm::Function::ExternalLinkage, Name, 9684c13b7a3973d2d263d9682d7b68fbfeb76334af5Nate Begeman &getModule()); 969bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner} 970bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 9717acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattnerllvm::Function *CodeGenModule::getIntrinsic(unsigned IID,const llvm::Type **Tys, 9727acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattner unsigned NumTys) { 9737acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattner return llvm::Intrinsic::getDeclaration(&getModule(), 9747acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattner (llvm::Intrinsic::ID)IID, Tys, NumTys); 9757acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattner} 976bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattner 9775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerllvm::Function *CodeGenModule::getMemCpyFn() { 9785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (MemCpyFn) return MemCpyFn; 9794e8a9e8640a6717120394ee2ee5f27989757754dChris Lattner const llvm::Type *IntPtr = TheTargetData.getIntPtrType(); 9804e8a9e8640a6717120394ee2ee5f27989757754dChris Lattner return MemCpyFn = getIntrinsic(llvm::Intrinsic::memcpy, &IntPtr, 1); 9815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 982c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 9830c99509927a0c7a48490486b9fec287b63e5c09cEli Friedmanllvm::Function *CodeGenModule::getMemMoveFn() { 9840c99509927a0c7a48490486b9fec287b63e5c09cEli Friedman if (MemMoveFn) return MemMoveFn; 9854e8a9e8640a6717120394ee2ee5f27989757754dChris Lattner const llvm::Type *IntPtr = TheTargetData.getIntPtrType(); 9864e8a9e8640a6717120394ee2ee5f27989757754dChris Lattner return MemMoveFn = getIntrinsic(llvm::Intrinsic::memmove, &IntPtr, 1); 9870c99509927a0c7a48490486b9fec287b63e5c09cEli Friedman} 9880c99509927a0c7a48490486b9fec287b63e5c09cEli Friedman 98941ef30e869d3f4940437503eb6a2cf70819fdb08Lauro Ramos Venanciollvm::Function *CodeGenModule::getMemSetFn() { 99041ef30e869d3f4940437503eb6a2cf70819fdb08Lauro Ramos Venancio if (MemSetFn) return MemSetFn; 9914e8a9e8640a6717120394ee2ee5f27989757754dChris Lattner const llvm::Type *IntPtr = TheTargetData.getIntPtrType(); 9924e8a9e8640a6717120394ee2ee5f27989757754dChris Lattner return MemSetFn = getIntrinsic(llvm::Intrinsic::memset, &IntPtr, 1); 99341ef30e869d3f4940437503eb6a2cf70819fdb08Lauro Ramos Venancio} 9947acda7c4a0e4aec6c003b3169ca45a5f3bc7e033Chris Lattner 995e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlssonstatic void appendFieldAndPadding(CodeGenModule &CGM, 996e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson std::vector<llvm::Constant*>& Fields, 99744b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor FieldDecl *FieldD, FieldDecl *NextFieldD, 99844b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor llvm::Constant* Field, 9993c8f153ae767fa55b2da74438c7f8ec370a06d6fChris Lattner RecordDecl* RD, const llvm::StructType *STy) { 1000e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson // Append the field. 1001e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson Fields.push_back(Field); 1002e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson 100344b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor int StructFieldNo = CGM.getTypes().getLLVMFieldNo(FieldD); 1004e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson 1005e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson int NextStructFieldNo; 100644b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor if (!NextFieldD) { 1007e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson NextStructFieldNo = STy->getNumElements(); 1008e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson } else { 100944b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor NextStructFieldNo = CGM.getTypes().getLLVMFieldNo(NextFieldD); 1010e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson } 1011e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson 1012e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson // Append padding 1013e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson for (int i = StructFieldNo + 1; i < NextStructFieldNo; i++) { 1014e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson llvm::Constant *C = 1015e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson llvm::Constant::getNullValue(STy->getElementType(StructFieldNo + 1)); 1016e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson 1017e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson Fields.push_back(C); 1018e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson } 1019e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson} 1020e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson 10213e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar// We still need to work out the details of handling UTF-16. 10223e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar// See: <rdr://2996215> 1023bef20ac367a09555b30d6eb3847a81ec164caf88Chris Lattnerllvm::Constant *CodeGenModule:: 1024bef20ac367a09555b30d6eb3847a81ec164caf88Chris LattnerGetAddrOfConstantCFString(const std::string &str) { 1025c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson llvm::StringMapEntry<llvm::Constant *> &Entry = 1026c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson CFConstantStringMap.GetOrCreateValue(&str[0], &str[str.length()]); 1027c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 1028c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson if (Entry.getValue()) 1029c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson return Entry.getValue(); 1030c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 10313e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar llvm::Constant *Zero = llvm::Constant::getNullValue(llvm::Type::Int32Ty); 10323e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar llvm::Constant *Zeros[] = { Zero, Zero }; 1033c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 1034c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson if (!CFConstantStringClassRef) { 1035c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson const llvm::Type *Ty = getTypes().ConvertType(getContext().IntTy); 1036c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson Ty = llvm::ArrayType::get(Ty, 0); 10373e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar 10383e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar // FIXME: This is fairly broken if 10393e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar // __CFConstantStringClassReference is already defined, in that it 10403e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar // will get renamed and the user will most likely see an opaque 10413e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar // error message. This is a general issue with relying on 10423e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar // particular names. 10433e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar llvm::GlobalVariable *GV = 1044c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson new llvm::GlobalVariable(Ty, false, 1045c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson llvm::GlobalVariable::ExternalLinkage, 0, 1046c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson "__CFConstantStringClassReference", 1047c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson &getModule()); 10483e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar 10493e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar // Decay array -> ptr 10503e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar CFConstantStringClassRef = 10513e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar llvm::ConstantExpr::getGetElementPtr(GV, Zeros, 2); 1052c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson } 1053c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 1054e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson QualType CFTy = getContext().getCFConstantStringType(); 1055e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson RecordDecl *CFRD = CFTy->getAsRecordType()->getDecl(); 10563e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar 1057e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson const llvm::StructType *STy = 1058e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson cast<llvm::StructType>(getTypes().ConvertType(CFTy)); 1059e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson 1060e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson std::vector<llvm::Constant*> Fields; 106144b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor RecordDecl::field_iterator Field = CFRD->field_begin(); 106244b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 1063c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // Class pointer. 106444b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor FieldDecl *CurField = *Field++; 106544b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor FieldDecl *NextField = *Field++; 106644b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor appendFieldAndPadding(*this, Fields, CurField, NextField, 106744b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor CFConstantStringClassRef, CFRD, STy); 1068c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 1069c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // Flags. 107044b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor CurField = NextField; 107144b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor NextField = *Field++; 10723e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar const llvm::Type *Ty = getTypes().ConvertType(getContext().UnsignedIntTy); 107344b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor appendFieldAndPadding(*this, Fields, CurField, NextField, 107444b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor llvm::ConstantInt::get(Ty, 0x07C8), CFRD, STy); 1075c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 1076c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // String pointer. 107744b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor CurField = NextField; 107844b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor NextField = *Field++; 10793e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar llvm::Constant *C = llvm::ConstantArray::get(str); 1080c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson C = new llvm::GlobalVariable(C->getType(), true, 1081c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson llvm::GlobalValue::InternalLinkage, 1082e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson C, ".str", &getModule()); 108344b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor appendFieldAndPadding(*this, Fields, CurField, NextField, 1084e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson llvm::ConstantExpr::getGetElementPtr(C, Zeros, 2), 1085e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson CFRD, STy); 1086c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 1087c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // String length. 108844b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor CurField = NextField; 108944b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor NextField = 0; 1090c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson Ty = getTypes().ConvertType(getContext().LongTy); 109144b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor appendFieldAndPadding(*this, Fields, CurField, NextField, 109244b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor llvm::ConstantInt::get(Ty, str.length()), CFRD, STy); 1093c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson 1094c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson // The struct. 1095e3daa761061982f2267f7c8fb847ea02abad0aa9Anders Carlsson C = llvm::ConstantStruct::get(STy, Fields); 10960c67829763b98bc670062b553897a851fab17401Anders Carlsson llvm::GlobalVariable *GV = 10970c67829763b98bc670062b553897a851fab17401Anders Carlsson new llvm::GlobalVariable(C->getType(), true, 10980c67829763b98bc670062b553897a851fab17401Anders Carlsson llvm::GlobalVariable::InternalLinkage, 10990c67829763b98bc670062b553897a851fab17401Anders Carlsson C, "", &getModule()); 11003e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar 11010c67829763b98bc670062b553897a851fab17401Anders Carlsson GV->setSection("__DATA,__cfstring"); 11020c67829763b98bc670062b553897a851fab17401Anders Carlsson Entry.setValue(GV); 11033e9df9920db8de8ec93a424b0c1784f9bff301eaDaniel Dunbar 11040c67829763b98bc670062b553897a851fab17401Anders Carlsson return GV; 1105c9e2091efcb535110474434dd12015afdc3b1637Anders Carlsson} 110645e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 11076143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// GetStringForStringLiteral - Return the appropriate bytes for a 11081e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar/// string literal, properly padded to match the literal type. 11096143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbarstd::string CodeGenModule::GetStringForStringLiteral(const StringLiteral *E) { 11101e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar const char *StrData = E->getStrData(); 11111e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar unsigned Len = E->getByteLength(); 11121e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar 11131e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar const ConstantArrayType *CAT = 11141e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar getContext().getAsConstantArrayType(E->getType()); 11151e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar assert(CAT && "String isn't pointer or array!"); 11161e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar 1117dbb1ecc32ca122b07b7c98fd0a8f6f53985adaccChris Lattner // Resize the string to the right size. 11181e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar std::string Str(StrData, StrData+Len); 11191e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar uint64_t RealLen = CAT->getSize().getZExtValue(); 1120dbb1ecc32ca122b07b7c98fd0a8f6f53985adaccChris Lattner 1121dbb1ecc32ca122b07b7c98fd0a8f6f53985adaccChris Lattner if (E->isWide()) 1122dbb1ecc32ca122b07b7c98fd0a8f6f53985adaccChris Lattner RealLen *= getContext().Target.getWCharWidth()/8; 1123dbb1ecc32ca122b07b7c98fd0a8f6f53985adaccChris Lattner 11241e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar Str.resize(RealLen, '\0'); 11251e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar 11261e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar return Str; 11271e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar} 11281e04976fc2611d8cc06986a81deed4c42183b870Daniel Dunbar 11296143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// GetAddrOfConstantStringFromLiteral - Return a pointer to a 11306143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// constant array for the given string literal. 11316143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbarllvm::Constant * 11326143293fa4366ee95d7e47e61bd030a34bf68b55Daniel DunbarCodeGenModule::GetAddrOfConstantStringFromLiteral(const StringLiteral *S) { 11336143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar // FIXME: This can be more efficient. 11346143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar return GetAddrOfConstantString(GetStringForStringLiteral(S)); 11356143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar} 11366143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar 1137eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner/// GetAddrOfConstantStringFromObjCEncode - Return a pointer to a constant 1138eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner/// array for the given ObjCEncodeExpr node. 1139eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattnerllvm::Constant * 1140eaf2bb89eb2aad3b80673de30febe52df43c10ecChris LattnerCodeGenModule::GetAddrOfConstantStringFromObjCEncode(const ObjCEncodeExpr *E) { 1141eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner std::string Str; 1142eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner getContext().getObjCEncodingForType(E->getEncodedType(), Str); 1143a210f350fa78c263caa26e0f999cce85bb235309Eli Friedman 1144a210f350fa78c263caa26e0f999cce85bb235309Eli Friedman return GetAddrOfConstantCString(Str); 1145eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner} 1146eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner 1147eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner 1148a7ad98ff0919d6a24ea7c46634ea29bea551c1a0Chris Lattner/// GenerateWritableString -- Creates storage for a string literal. 114945e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattnerstatic llvm::Constant *GenerateStringLiteral(const std::string &str, 115045e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner bool constant, 11515fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar CodeGenModule &CGM, 11525fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar const char *GlobalName) { 11536143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar // Create Constant for this string literal. Don't add a '\0'. 11546143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar llvm::Constant *C = llvm::ConstantArray::get(str, false); 115545e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 115645e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner // Create a global variable for this string 1157eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner return new llvm::GlobalVariable(C->getType(), constant, 1158eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner llvm::GlobalValue::InternalLinkage, 1159eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner C, GlobalName ? GlobalName : ".str", 1160eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner &CGM.getModule()); 116145e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner} 116245e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 11636143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// GetAddrOfConstantString - Returns a pointer to a character array 11646143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// containing the literal. This contents are exactly that of the 11656143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// given string, i.e. it will not be null terminated automatically; 11666143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// see GetAddrOfConstantCString. Note that whether the result is 11676143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// actually a pointer to an LLVM constant depends on 11686143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// Feature.WriteableStrings. 11696143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// 11706143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// The result has pointer to array type. 11715fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbarllvm::Constant *CodeGenModule::GetAddrOfConstantString(const std::string &str, 11725fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar const char *GlobalName) { 117345e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner // Don't share any string literals if writable-strings is turned on. 117445e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner if (Features.WritableStrings) 11755fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar return GenerateStringLiteral(str, false, *this, GlobalName); 117645e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 117745e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner llvm::StringMapEntry<llvm::Constant *> &Entry = 117845e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner ConstantStringMap.GetOrCreateValue(&str[0], &str[str.length()]); 117945e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 118045e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner if (Entry.getValue()) 1181eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner return Entry.getValue(); 118245e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner 118345e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner // Create a global variable for this. 11845fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar llvm::Constant *C = GenerateStringLiteral(str, true, *this, GlobalName); 118545e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner Entry.setValue(C); 118645e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner return C; 118745e8cbdce25c2e16c7aac2036a591f6190097ae6Chris Lattner} 11886143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar 11896143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// GetAddrOfConstantCString - Returns a pointer to a character 11906143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// array containing the literal and a terminating '\-' 11916143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar/// character. The result has pointer to array type. 11925fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbarllvm::Constant *CodeGenModule::GetAddrOfConstantCString(const std::string &str, 11935fabf9dbee29464bcd06cd09f8e569d1b850f948Daniel Dunbar const char *GlobalName){ 1194c9f29c61856ffb5f643cedbe87ac076f21a1381aChris Lattner return GetAddrOfConstantString(str + '\0', GlobalName); 11956143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar} 119641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 1197af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar/// EmitObjCPropertyImplementations - Emit information for synthesized 1198af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar/// properties for an implementation. 1199af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbarvoid CodeGenModule::EmitObjCPropertyImplementations(const 1200af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCImplementationDecl *D) { 1201af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar for (ObjCImplementationDecl::propimpl_iterator i = D->propimpl_begin(), 1202af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar e = D->propimpl_end(); i != e; ++i) { 1203af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCPropertyImplDecl *PID = *i; 1204af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 1205af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // Dynamic is just for type-checking. 1206af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize) { 1207af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCPropertyDecl *PD = PID->getPropertyDecl(); 1208af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 1209af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // Determine which methods need to be implemented, some may have 1210af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // been overridden. Note that ::isSynthesized is not the method 1211af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // we want, that just indicates if the decl came from a 1212af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // property. What we want to know is if the method is defined in 1213af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // this implementation. 1214af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar if (!D->getInstanceMethod(PD->getGetterName())) 1215fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian CodeGenFunction(*this).GenerateObjCGetter( 1216fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian const_cast<ObjCImplementationDecl *>(D), PID); 1217af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar if (!PD->isReadOnly() && 1218af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar !D->getInstanceMethod(PD->getSetterName())) 1219fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian CodeGenFunction(*this).GenerateObjCSetter( 1220fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian const_cast<ObjCImplementationDecl *>(D), PID); 1221af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar } 1222af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar } 1223af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar} 1224af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 122541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar/// EmitTopLevelDecl - Emit code for a single top level declaration. 122641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbarvoid CodeGenModule::EmitTopLevelDecl(Decl *D) { 122741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // If an error has occurred, stop code generation, but continue 122841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // parsing and semantic analysis (to ensure all warnings and errors 122941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // are emitted). 123041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar if (Diags.hasErrorOccurred()) 123141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar return; 123241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 123341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar switch (D->getKind()) { 123441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::Function: 123541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::Var: 123641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar EmitGlobal(cast<ValueDecl>(D)); 123741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 123841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 123941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::Namespace: 1240662174c82ef46b19a2329c7d37208e1d12dfb7b3Daniel Dunbar ErrorUnsupported(D, "namespace"); 124141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 124241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 124341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // Objective-C Decls 124441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 124538e24c782c17b6058bf61d635747bbde19fb1bc7Fariborz Jahanian // Forward declarations, no (immediate) code generation. 124641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCClass: 124741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCForwardProtocol: 124841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 124938e24c782c17b6058bf61d635747bbde19fb1bc7Fariborz Jahanian 125041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCProtocol: 125138e24c782c17b6058bf61d635747bbde19fb1bc7Fariborz Jahanian case Decl::ObjCCategory: 125238e24c782c17b6058bf61d635747bbde19fb1bc7Fariborz Jahanian case Decl::ObjCInterface: { 125338e24c782c17b6058bf61d635747bbde19fb1bc7Fariborz Jahanian ObjCContainerDecl *OCD = cast<ObjCContainerDecl>(D); 125438e24c782c17b6058bf61d635747bbde19fb1bc7Fariborz Jahanian for (ObjCContainerDecl::tuvar_iterator i = OCD->tuvar_begin(), 125538e24c782c17b6058bf61d635747bbde19fb1bc7Fariborz Jahanian e = OCD->tuvar_end(); i != e; ++i) { 125638e24c782c17b6058bf61d635747bbde19fb1bc7Fariborz Jahanian VarDecl *VD = *i; 125738e24c782c17b6058bf61d635747bbde19fb1bc7Fariborz Jahanian EmitGlobal(VD); 125838e24c782c17b6058bf61d635747bbde19fb1bc7Fariborz Jahanian } 125938e24c782c17b6058bf61d635747bbde19fb1bc7Fariborz Jahanian if (D->getKind() == Decl::ObjCProtocol) 126038e24c782c17b6058bf61d635747bbde19fb1bc7Fariborz Jahanian Runtime->GenerateProtocol(cast<ObjCProtocolDecl>(D)); 126141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 126238e24c782c17b6058bf61d635747bbde19fb1bc7Fariborz Jahanian } 126341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 126441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCCategoryImpl: 1265af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // Categories have properties but don't support synthesize so we 1266af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar // can ignore them here. 1267af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 126841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar Runtime->GenerateCategory(cast<ObjCCategoryImplDecl>(D)); 126941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 127041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 1271af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar case Decl::ObjCImplementation: { 1272af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCImplementationDecl *OMD = cast<ObjCImplementationDecl>(D); 1273af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar EmitObjCPropertyImplementations(OMD); 1274af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar Runtime->GenerateClass(OMD); 127541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 1276af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar } 127741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCMethod: { 127841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar ObjCMethodDecl *OMD = cast<ObjCMethodDecl>(D); 127941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // If this is not a prototype, emit the body. 128041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar if (OMD->getBody()) 128141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar CodeGenFunction(*this).GenerateObjCMethod(OMD); 128241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 128341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar } 128441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::ObjCCompatibleAlias: 1285305c658ebce84bb9833fc0e7675554656453b8e8Fariborz Jahanian // compatibility-alias is a directive and has no code gen. 128641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 128741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 128841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::LinkageSpec: { 128941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar LinkageSpecDecl *LSD = cast<LinkageSpecDecl>(D); 129041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar if (LSD->getLanguage() == LinkageSpecDecl::lang_cxx) 1291488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar ErrorUnsupported(LSD, "linkage spec"); 129241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // FIXME: implement C++ linkage, C linkage works mostly by C 129341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // language reuse already. 129441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 129541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar } 129641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 129741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar case Decl::FileScopeAsm: { 129841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar FileScopeAsmDecl *AD = cast<FileScopeAsmDecl>(D); 129941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar std::string AsmString(AD->getAsmString()->getStrData(), 130041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar AD->getAsmString()->getByteLength()); 130141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 130241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar const std::string &S = getModule().getModuleInlineAsm(); 130341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar if (S.empty()) 130441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar getModule().setModuleInlineAsm(AsmString); 130541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar else 130641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar getModule().setModuleInlineAsm(S + '\n' + AsmString); 130741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar break; 130841071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar } 130941071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar 131041071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar default: 131141071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // Make sure we handled everything we should, every other kind is 131241071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // a non-top-level decl. FIXME: Would be nice to have an 131341071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // isTopLevelDeclKind function. Need to recode Decl::Kind to do 131441071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar // that easily. 131541071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar assert(isa<TypeDecl>(D) && "Unsupported decl kind"); 131641071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar } 131741071debe9b8887449c3f2ee0dd7124ed47bdda8Daniel Dunbar} 1318