CGObjCGNU.cpp revision 87935a8d5c0eeda8ad62815f4fc815ad25c7cd8e
120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//===------- CGObjCGNU.cpp - Emit LLVM Code from ASTs for a Module --------===// 20f984268b05edab2cc555a427c441baa9c252658Chris Lattner// 30f984268b05edab2cc555a427c441baa9c252658Chris Lattner// The LLVM Compiler Infrastructure 40f984268b05edab2cc555a427c441baa9c252658Chris Lattner// 50f984268b05edab2cc555a427c441baa9c252658Chris Lattner// This file is distributed under the University of Illinois Open Source 60f984268b05edab2cc555a427c441baa9c252658Chris Lattner// License. See LICENSE.TXT for details. 70f984268b05edab2cc555a427c441baa9c252658Chris Lattner// 80f984268b05edab2cc555a427c441baa9c252658Chris Lattner//===----------------------------------------------------------------------===// 90f984268b05edab2cc555a427c441baa9c252658Chris Lattner// 1020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// This provides Objective-C code generation targetting the GNU runtime. The 1120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// class in this file generates structures used by the GNU Objective-C runtime 1220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// library. These structures are defined in objc/objc.h and objc/objc-api.h in 1320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// the GNU runtime distribution. 140f984268b05edab2cc555a427c441baa9c252658Chris Lattner// 150f984268b05edab2cc555a427c441baa9c252658Chris Lattner//===----------------------------------------------------------------------===// 160f984268b05edab2cc555a427c441baa9c252658Chris Lattner 170f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "CGObjCRuntime.h" 18dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner#include "CodeGenModule.h" 198f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar#include "CodeGenFunction.h" 205dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 21dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner#include "clang/AST/ASTContext.h" 22e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar#include "clang/AST/Decl.h" 23af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar#include "clang/AST/DeclObjC.h" 2419cc4abea06a9b49e0e16a50d335c064cd723572Anders Carlsson#include "clang/AST/RecordLayout.h" 2516f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/AST/StmtObjC.h" 265dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 275dc0867af17b3bd6f567897433853b2b4767446cChris Lattner#include "llvm/Intrinsics.h" 280f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "llvm/Module.h" 29c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall#include "llvm/LLVMContext.h" 300f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "llvm/ADT/SmallVector.h" 3120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov#include "llvm/ADT/StringMap.h" 327ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar#include "llvm/Support/Compiler.h" 337ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar#include "llvm/Target/TargetData.h" 345dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 3520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov#include <map> 36e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 37e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 38dce1406f1c1f572cfd61c494546572d63461c741Chris Lattnerusing namespace clang; 3946f45b9bec4a265ad8400a538e5ec3a5683617f1Daniel Dunbarusing namespace CodeGen; 4020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovusing llvm::dyn_cast; 4120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 4220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// The version of the runtime that this class targets. Must match the version 4320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// in the runtime. 4420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic const int RuntimeVersion = 8; 459cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianstatic const int NonFragileRuntimeVersion = 9; 4620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic const int ProtocolVersion = 2; 47d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianstatic const int NonFragileProtocolVersion = 3; 480f984268b05edab2cc555a427c441baa9c252658Chris Lattner 490f984268b05edab2cc555a427c441baa9c252658Chris Lattnernamespace { 50dce1406f1c1f572cfd61c494546572d63461c741Chris Lattnerclass CGObjCGNU : public CodeGen::CGObjCRuntime { 510f984268b05edab2cc555a427c441baa9c252658Chris Lattnerprivate: 52dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner CodeGen::CodeGenModule &CGM; 530f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Module &TheModule; 54e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *SelectorTy; 55d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const llvm::IntegerType *Int8Ty; 56e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *PtrToInt8Ty; 57b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const llvm::FunctionType *IMPTy; 58e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *IdTy; 59ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall const llvm::PointerType *PtrToIdTy; 60ead608af31b6c9abeae1ca6d0b75094dac4641c0John McCall CanQualType ASTIdTy; 61e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::IntegerType *IntTy; 62e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *PtrTy; 63e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::IntegerType *LongTy; 64e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *PtrToIntTy; 655efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *ClassPtrAlias; 665efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *MetaClassPtrAlias; 6720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Classes; 6820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Categories; 6920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> ConstantStrings; 7048272a078e54d501cb05edd797c54b8e82ceb520David Chisnall llvm::StringMap<llvm::Constant*> ObjCStrings; 7120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function *LoadFunction; 7220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StringMap<llvm::Constant*> ExistingProtocols; 7320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov typedef std::pair<std::string, std::string> TypedSelector; 7420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::map<TypedSelector, llvm::GlobalAlias*> TypedSelectors; 7520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StringMap<llvm::GlobalAlias*> UntypedSelectors; 76ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // Selectors that we don't emit in GC mode 77ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Selector RetainSel, ReleaseSel, AutoreleaseSel; 78ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // Functions used for GC. 79ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall llvm::Constant *IvarAssignFn, *StrongCastAssignFn, *MemMoveFn, *WeakReadFn, 80ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall *WeakAssignFn, *GlobalAssignFn; 8120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Some zeros used for GEPs in lots of places. 8220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Zeros[2]; 8320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *NULLPtr; 84a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson llvm::LLVMContext &VMContext; 85c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall /// Metadata kind used to tie method lookups to message sends. 86c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall unsigned msgSendMDKind; 8720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovprivate: 8820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateIvarList( 8920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 9020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 9120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets); 9220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateMethodList(const std::string &ClassName, 9320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const std::string &CategoryName, 941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::SmallVectorImpl<Selector> &MethodSels, 951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes, 9620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList); 97f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *GenerateEmptyProtocol(const std::string &ProtocolName); 98d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *GeneratePropertyList(const ObjCImplementationDecl *OID, 99d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVectorImpl<Selector> &InstanceMethodSels, 100d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVectorImpl<llvm::Constant*> &InstanceMethodTypes); 10120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolList( 10220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols); 103d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // To ensure that all protocols are seen by the runtime, we add a category on 104d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // a class defined in the runtime, declaring no methods, but adopting the 105d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // protocols. 106d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian void GenerateProtocolHolderCategory(void); 10720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateClassStructure( 10820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 10920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 11020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 111d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 11220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 11320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 11420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 11520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 116d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Protocols, 117d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *IvarOffsets, 1188c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall llvm::Constant *Properties, 1198c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall bool isMeta=false); 12020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolMethodList( 12120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames, 12220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes); 12320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeConstantString(const std::string &Str, const std::string 12420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &Name=""); 125d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *ExportUniqueString(const std::string &Str, const std::string 126d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian prefix); 12720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeGlobal(const llvm::StructType *Ty, 12874a8bbf0654fbbf37be04b240b5bbe591f37f242Benjamin Kramer std::vector<llvm::Constant*> &V, llvm::StringRef Name="", 12941d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall llvm::GlobalValue::LinkageTypes linkage=llvm::GlobalValue::InternalLinkage); 13020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeGlobal(const llvm::ArrayType *Ty, 13174a8bbf0654fbbf37be04b240b5bbe591f37f242Benjamin Kramer std::vector<llvm::Constant*> &V, llvm::StringRef Name="", 13241d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall llvm::GlobalValue::LinkageTypes linkage=llvm::GlobalValue::InternalLinkage); 1339cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::GlobalVariable *ObjCIvarOffsetVariable(const ObjCInterfaceDecl *ID, 1349cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar); 1352a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner void EmitClassRef(const std::string &className); 136ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall llvm::Value* EnforceType(CGBuilderTy B, llvm::Value *V, const llvm::Type *Ty){ 137ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (V->getType() == Ty) return V; 138ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return B.CreateBitCast(V, Ty); 139ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1400f984268b05edab2cc555a427c441baa9c252658Chris Lattnerpublic: 141dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner CGObjCGNU(CodeGen::CodeGenModule &cgm); 1420d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall virtual llvm::Constant *GenerateConstantString(const StringLiteral *); 1431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump virtual CodeGen::RValue 1448f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar GenerateMessageSend(CodeGen::CodeGenFunction &CGF, 1457f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 1467f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 147f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 148df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 149c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall const ObjCInterfaceDecl *Class, 150df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method); 1511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump virtual CodeGen::RValue 1528f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar GenerateMessageSendSuper(CodeGen::CodeGenFunction &CGF, 1537f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 1547f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 155f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 1567ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 157f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 15819cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 159d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const CallArgList &CallArgs, 160d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const ObjCMethodDecl *Method); 16145d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GetClass(CGBuilderTy &Builder, 162ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar const ObjCInterfaceDecl *OID); 1636d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar virtual llvm::Value *GetSelector(CGBuilderTy &Builder, Selector Sel); 1646d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar virtual llvm::Value *GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 1656d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar *Method); 1661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump virtual llvm::Function *GenerateMethod(const ObjCMethodDecl *OMD, 168679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian const ObjCContainerDecl *CD); 1697ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateCategory(const ObjCCategoryImplDecl *CMD); 1707ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateClass(const ObjCImplementationDecl *ClassDecl); 17145d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GenerateProtocolRef(CGBuilderTy &Builder, 172af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD); 173af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar virtual void GenerateProtocol(const ObjCProtocolDecl *PD); 17420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual llvm::Function *ModuleInitFunction(); 17549f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar virtual llvm::Function *GetPropertyGetFunction(); 17649f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar virtual llvm::Function *GetPropertySetFunction(); 1776cc590602f41c3e98e8af0023d54296c8eca7910Fariborz Jahanian virtual llvm::Function *GetCopyStructFunction(); 178309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar virtual llvm::Constant *EnumerationMutationFunction(); 1791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 180bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanian virtual void EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF, 181bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanian const Stmt &S); 18264d5d6c5903157c521af496479d06dc26032d718Anders Carlsson virtual void EmitThrowStmt(CodeGen::CodeGenFunction &CGF, 18364d5d6c5903157c521af496479d06dc26032d718Anders Carlsson const ObjCAtThrowStmt &S); 1843e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian virtual llvm::Value * EmitObjCWeakRead(CodeGen::CodeGenFunction &CGF, 1856dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian llvm::Value *AddrWeakObj); 1863e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian virtual void EmitObjCWeakAssign(CodeGen::CodeGenFunction &CGF, 1873e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian llvm::Value *src, llvm::Value *dst); 18858626500527695865683d1d65053743de8770b60Fariborz Jahanian virtual void EmitObjCGlobalAssign(CodeGen::CodeGenFunction &CGF, 18958626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dest); 1907eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian virtual void EmitObjCIvarAssign(CodeGen::CodeGenFunction &CGF, 1916c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *src, llvm::Value *dest, 1926c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *ivarOffset); 19358626500527695865683d1d65053743de8770b60Fariborz Jahanian virtual void EmitObjCStrongCastAssign(CodeGen::CodeGenFunction &CGF, 19458626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dest); 195082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian virtual void EmitGCMemmoveCollectable(CodeGen::CodeGenFunction &CGF, 1961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *DestPtr, 197082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *SrcPtr, 19808c321380fff07d476a19daab6d29522c046cd49Fariborz Jahanian QualType Ty); 199598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian virtual LValue EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF, 200598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 201598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 202598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 203598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers); 204f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian virtual llvm::Value *EmitIvarOffset(CodeGen::CodeGenFunction &CGF, 2052a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 206f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar); 2070f984268b05edab2cc555a427c441baa9c252658Chris Lattner}; 2080f984268b05edab2cc555a427c441baa9c252658Chris Lattner} // end anonymous namespace 2090f984268b05edab2cc555a427c441baa9c252658Chris Lattner 21020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 2112a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// Emits a reference to a dummy variable which is emitted with each class. 2122a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// This ensures that a linker error will be generated when trying to link 2132a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// together modules where a referenced class is not defined. 214bb1c8600218b3244340331165fc7cba7bf227655Mike Stumpvoid CGObjCGNU::EmitClassRef(const std::string &className) { 2152a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner std::string symbolRef = "__objc_class_ref_" + className; 2162a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // Don't emit two copies of the same symbol 217bb1c8600218b3244340331165fc7cba7bf227655Mike Stump if (TheModule.getGlobalVariable(symbolRef)) 218bb1c8600218b3244340331165fc7cba7bf227655Mike Stump return; 2192a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner std::string symbolName = "__objc_class_name_" + className; 2202a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner llvm::GlobalVariable *ClassSymbol = TheModule.getGlobalVariable(symbolName); 2212a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (!ClassSymbol) { 2221c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson ClassSymbol = new llvm::GlobalVariable(TheModule, LongTy, false, 2231c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::GlobalValue::ExternalLinkage, 0, symbolName); 2242a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 2251c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, ClassSymbol->getType(), true, 226f35271b8677a5f31498b89587b1da42a06dd46fdChris Lattner llvm::GlobalValue::WeakAnyLinkage, ClassSymbol, symbolRef); 2272a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner} 22820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 229d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianstatic std::string SymbolNameForMethod(const std::string &ClassName, const 230d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string &CategoryName, const std::string &MethodName, bool isClassMethod) 231d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian{ 232d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall std::string MethodNameColonStripped = MethodName; 233d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall std::replace(MethodNameColonStripped.begin(), MethodNameColonStripped.end(), 234d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall ':', '_'); 235d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall return std::string(isClassMethod ? "_c_" : "_i_") + ClassName + "_" + 236d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall CategoryName + "_" + MethodNameColonStripped; 23720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 23887935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnallstatic std::string MangleSelectorTypes(const std::string &TypeString) { 23987935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall std::string Mangled = TypeString; 24087935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall std::replace(Mangled.begin(), Mangled.end(), '@', '_'); 24187935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall return Mangled; 24287935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall} 24320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 244dce1406f1c1f572cfd61c494546572d63461c741Chris LattnerCGObjCGNU::CGObjCGNU(CodeGen::CodeGenModule &cgm) 2455efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar : CGM(cgm), TheModule(CGM.getModule()), ClassPtrAlias(0), 246a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson MetaClassPtrAlias(0), VMContext(cgm.getLLVMContext()) { 247c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall 248c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall msgSendMDKind = VMContext.getMDKindID("GNUObjCMessageSend"); 249c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall 250e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner IntTy = cast<llvm::IntegerType>( 251e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner CGM.getTypes().ConvertType(CGM.getContext().IntTy)); 252e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner LongTy = cast<llvm::IntegerType>( 253e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner CGM.getTypes().ConvertType(CGM.getContext().LongTy)); 2541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 255d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Int8Ty = llvm::Type::getInt8Ty(VMContext); 256d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // C string type. Used in lots of places. 257d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty = llvm::PointerType::getUnqual(Int8Ty); 258d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 2594a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Zeros[0] = llvm::ConstantInt::get(LongTy, 0); 26020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros[1] = Zeros[0]; 261d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NULLPtr = llvm::ConstantPointerNull::get(PtrToInt8Ty); 262391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Get the selector Type. 2630d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall QualType selTy = CGM.getContext().getObjCSelType(); 2640d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall if (QualType() == selTy) { 2650d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall SelectorTy = PtrToInt8Ty; 2660d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } else { 2670d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall SelectorTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(selTy)); 2680d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } 269e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 27096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson PtrToIntTy = llvm::PointerType::getUnqual(IntTy); 271391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrTy = PtrToInt8Ty; 2721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 273391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Object type 274ead608af31b6c9abeae1ca6d0b75094dac4641c0John McCall ASTIdTy = CGM.getContext().getCanonicalType(CGM.getContext().getObjCIdType()); 2750d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall if (QualType() == ASTIdTy) { 2760d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall IdTy = PtrToInt8Ty; 2770d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } else { 2780d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall IdTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(ASTIdTy)); 2790d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } 280ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall PtrToIdTy = llvm::PointerType::getUnqual(IdTy); 2811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 282391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // IMP type 283391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner std::vector<const llvm::Type*> IMPArgs; 284391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IMPArgs.push_back(IdTy); 285391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IMPArgs.push_back(SelectorTy); 28696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson IMPTy = llvm::FunctionType::get(IdTy, IMPArgs, true); 287ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 288ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (CGM.getLangOptions().getGCMode() != LangOptions::NonGC) { 289ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // Get selectors needed in GC mode 290ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall RetainSel = GetNullarySelector("retain", CGM.getContext()); 291ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall ReleaseSel = GetNullarySelector("release", CGM.getContext()); 292ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall AutoreleaseSel = GetNullarySelector("autorelease", CGM.getContext()); 293ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 294ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // Get functions needed in GC mode 295ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 296ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_ivar(id, id, ptrdiff_t); 297ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall std::vector<const llvm::Type*> Args(1, IdTy); 298ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Args.push_back(PtrToIdTy); 299ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // FIXME: ptrdiff_t 300ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Args.push_back(LongTy); 301ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall llvm::FunctionType *FTy = llvm::FunctionType::get(IdTy, Args, false); 302ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall IvarAssignFn = CGM.CreateRuntimeFunction(FTy, "objc_assign_ivar"); 303ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_strongCast (id, id*) 304ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Args.pop_back(); 305ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall FTy = llvm::FunctionType::get(IdTy, Args, false); 306ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall StrongCastAssignFn = 307ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGM.CreateRuntimeFunction(FTy, "objc_assign_strongCast"); 308ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_global(id, id*); 309ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall FTy = llvm::FunctionType::get(IdTy, Args, false); 310ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall GlobalAssignFn = CGM.CreateRuntimeFunction(FTy, "objc_assign_global"); 311ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_weak(id, id*); 312ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall FTy = llvm::FunctionType::get(IdTy, Args, false); 313ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall WeakAssignFn = CGM.CreateRuntimeFunction(FTy, "objc_assign_weak"); 314ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_read_weak(id*); 315ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Args.clear(); 316ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Args.push_back(PtrToIdTy); 317ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall FTy = llvm::FunctionType::get(IdTy, Args, false); 318ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall WeakReadFn = CGM.CreateRuntimeFunction(FTy, "objc_read_weak"); 319ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // void *objc_memmove_collectable(void*, void *, size_t); 320ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Args.clear(); 321ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Args.push_back(PtrToInt8Ty); 322ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Args.push_back(PtrToInt8Ty); 323ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // FIXME: size_t 324ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Args.push_back(LongTy); 325ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall FTy = llvm::FunctionType::get(IdTy, Args, false); 326ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall MemMoveFn = CGM.CreateRuntimeFunction(FTy, "objc_memmove_collectable"); 327ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 32820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 329bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 33020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// This has to perform the lookup every time, since posing and related 33120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// techniques can modify the name -> class mapping. 33245d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbarllvm::Value *CGObjCGNU::GetClass(CGBuilderTy &Builder, 333ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar const ObjCInterfaceDecl *OID) { 334d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner llvm::Value *ClassName = CGM.GetAddrOfConstantCString(OID->getNameAsString()); 33541d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // With the incompatible ABI, this will need to be replaced with a direct 33641d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // reference to the class symbol. For the compatible nonfragile ABI we are 33741d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // still performing this lookup at run time but emitting the symbol for the 33841d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // class externally so that we can make the switch later. 3392a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner EmitClassRef(OID->getNameAsString()); 340ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar ClassName = Builder.CreateStructGEP(ClassName, 0); 341ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar 34226c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params(1, PtrToInt8Ty); 34320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassLookupFn = 34496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, 34526c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params, 34626c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian true), 34726c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_lookup_class"); 34820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return Builder.CreateCall(ClassLookupFn, ClassName); 349391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 350391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 3516d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbarllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, Selector Sel) { 352077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner llvm::GlobalAlias *&US = UntypedSelectors[Sel.getAsString()]; 3538e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner if (US == 0) 3546d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar US = new llvm::GlobalAlias(llvm::PointerType::getUnqual(SelectorTy), 3550f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall llvm::GlobalValue::PrivateLinkage, 3560f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall ".objc_untyped_selector_alias"+Sel.getAsString(), 3578e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner NULL, &TheModule); 3581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3596d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar return Builder.CreateLoad(US); 360df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian} 361df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 3626d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbarllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 363df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian *Method) { 364df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 365df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian std::string SelName = Method->getSelector().getAsString(); 366df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian std::string SelTypes; 367df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian CGM.getContext().getObjCEncodingForMethodDecl(Method, SelTypes); 368df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian // Typed selectors 369df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian TypedSelector Selector = TypedSelector(SelName, 370df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian SelTypes); 371df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 372df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian // If it's already cached, return it. 373bb1c8600218b3244340331165fc7cba7bf227655Mike Stump if (TypedSelectors[Selector]) { 3746d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar return Builder.CreateLoad(TypedSelectors[Selector]); 375df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian } 376df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 377df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian // If it isn't, cache it. 378df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::GlobalAlias *Sel = new llvm::GlobalAlias( 3796d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar llvm::PointerType::getUnqual(SelectorTy), 3800f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall llvm::GlobalValue::PrivateLinkage, ".objc_selector_alias" + SelName, 381df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian NULL, &TheModule); 382df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian TypedSelectors[Selector] = Sel; 383df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 3846d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar return Builder.CreateLoad(Sel); 3858e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner} 3868e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 3875e7dcc62e4637591959f9c372f6c5258d0d263e0Chris Lattnerllvm::Constant *CGObjCGNU::MakeConstantString(const std::string &Str, 3885e7dcc62e4637591959f9c372f6c5258d0d263e0Chris Lattner const std::string &Name) { 3898a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *ConstStr = CGM.GetAddrOfConstantCString(Str, Name.c_str()); 3903c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros, 2); 39120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 392d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianllvm::Constant *CGObjCGNU::ExportUniqueString(const std::string &Str, 393d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const std::string prefix) { 394d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string name = prefix + Str; 395d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *ConstStr = TheModule.getGlobalVariable(name); 396d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (!ConstStr) { 397d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *value = llvm::ConstantArray::get(VMContext, Str, true); 398d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ConstStr = new llvm::GlobalVariable(TheModule, value->getType(), true, 399d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::LinkOnceODRLinkage, value, prefix + Str); 400d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 401d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros, 2); 402d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian} 403bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 40420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::MakeGlobal(const llvm::StructType *Ty, 40574a8bbf0654fbbf37be04b240b5bbe591f37f242Benjamin Kramer std::vector<llvm::Constant*> &V, llvm::StringRef Name, 40641d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall llvm::GlobalValue::LinkageTypes linkage) { 40708e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson llvm::Constant *C = llvm::ConstantStruct::get(Ty, V); 4081c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson return new llvm::GlobalVariable(TheModule, Ty, false, 4091c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::GlobalValue::InternalLinkage, C, Name); 41020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 411bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 41220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::MakeGlobal(const llvm::ArrayType *Ty, 41374a8bbf0654fbbf37be04b240b5bbe591f37f242Benjamin Kramer std::vector<llvm::Constant*> &V, llvm::StringRef Name, 41441d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall llvm::GlobalValue::LinkageTypes linkage) { 4157db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *C = llvm::ConstantArray::get(Ty, V); 4161c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson return new llvm::GlobalVariable(TheModule, Ty, false, 417bb1c8600218b3244340331165fc7cba7bf227655Mike Stump llvm::GlobalValue::InternalLinkage, C, Name); 41820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 41920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 42020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate an NSConstantString object. 4210d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnallllvm::Constant *CGObjCGNU::GenerateConstantString(const StringLiteral *SL) { 42248272a078e54d501cb05edd797c54b8e82ceb520David Chisnall 4230d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall std::string Str(SL->getStrData(), SL->getByteLength()); 4240d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall 42548272a078e54d501cb05edd797c54b8e82ceb520David Chisnall // Look for an existing one 42648272a078e54d501cb05edd797c54b8e82ceb520David Chisnall llvm::StringMap<llvm::Constant*>::iterator old = ObjCStrings.find(Str); 42748272a078e54d501cb05edd797c54b8e82ceb520David Chisnall if (old != ObjCStrings.end()) 42848272a078e54d501cb05edd797c54b8e82ceb520David Chisnall return old->getValue(); 42948272a078e54d501cb05edd797c54b8e82ceb520David Chisnall 43020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 43120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars.push_back(NULLPtr); 43213fd7e5111032f54b538dd66d035b0ccc1f82467Chris Lattner Ivars.push_back(MakeConstantString(Str)); 4334a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Ivars.push_back(llvm::ConstantInt::get(IntTy, Str.size())); 43420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ObjCStr = MakeGlobal( 43547a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType::get(VMContext, PtrToInt8Ty, PtrToInt8Ty, IntTy, NULL), 43620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars, ".objc_str"); 43748272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ObjCStr = llvm::ConstantExpr::getBitCast(ObjCStr, PtrToInt8Ty); 43848272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ObjCStrings[Str] = ObjCStr; 43948272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ConstantStrings.push_back(ObjCStr); 44020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return ObjCStr; 44120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 44220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 44320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///Generates a message send where the super is the receiver. This is a message 44420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///send to self with special delivery semantics indicating which class's method 44520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///should be called. 4468f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCodeGen::RValue 4478f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCGObjCGNU::GenerateMessageSendSuper(CodeGen::CodeGenFunction &CGF, 4487f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 4497f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 450f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 4517ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 452f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 45319cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 454d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const CallArgList &CallArgs, 455d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const ObjCMethodDecl *Method) { 456ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (CGM.getLangOptions().getGCMode() != LangOptions::NonGC) { 457ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == RetainSel || Sel == AutoreleaseSel) { 458ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return RValue::get(Receiver); 459ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 460ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == ReleaseSel) { 461ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return RValue::get(0); 462ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 463ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 464db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 465db831948f32217ece8410099f9982ef900c3b3c3David Chisnall CGBuilderTy &Builder = CGF.Builder; 466db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::Value *cmd = GetSelector(Builder, Sel); 467db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 468b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 469b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CallArgList ActualArgs; 470b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 471b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back( 472db831948f32217ece8410099f9982ef900c3b3c3David Chisnall std::make_pair(RValue::get(Builder.CreateBitCast(Receiver, IdTy)), 4730f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall ASTIdTy)); 474b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back(std::make_pair(RValue::get(cmd), 475b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGF.getContext().getObjCSelType())); 476b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.insert(ActualArgs.end(), CallArgs.begin(), CallArgs.end()); 477b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 478b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CodeGenTypes &Types = CGM.getTypes(); 47904a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall const CGFunctionInfo &FnInfo = Types.getFunctionInfo(ResultType, ActualArgs, 480264ba48dc98f3f843935a485d5b086f7e0fdc4f1Rafael Espindola FunctionType::ExtInfo()); 4816793966aa221764f579cc8436bd641e1ec339c6dDaniel Dunbar const llvm::FunctionType *impType = 4826793966aa221764f579cc8436bd641e1ec339c6dDaniel Dunbar Types.GetFunctionType(FnInfo, Method ? Method->isVariadic() : false); 483b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 4845efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::Value *ReceiverClass = 0; 48548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (isCategoryImpl) { 48648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::Constant *classLookupFunction = 0; 48748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner std::vector<const llvm::Type*> Params; 48848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Params.push_back(PtrTy); 48948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 49096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 49148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner IdTy, Params, true), "objc_get_meta_class"); 49248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 49396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 49448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner IdTy, Params, true), "objc_get_class"); 4955efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 496db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateCall(classLookupFunction, 49748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MakeConstantString(Class->getNameAsString())); 4985efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } else { 49948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // Set up global aliases for the metaclass or class pointer if they do not 50048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // already exist. These will are forward-references which will be set to 501bb1c8600218b3244340331165fc7cba7bf227655Mike Stump // pointers to the class and metaclass structure created for the runtime 502bb1c8600218b3244340331165fc7cba7bf227655Mike Stump // load function. To send a message to super, we look up the value of the 50348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // super_class pointer from either the class or metaclass structure. 50448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 50548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!MetaClassPtrAlias) { 50648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MetaClassPtrAlias = new llvm::GlobalAlias(IdTy, 50748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_metaclass_ref" + 50848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 50948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 51048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = MetaClassPtrAlias; 51148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 51248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!ClassPtrAlias) { 51348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ClassPtrAlias = new llvm::GlobalAlias(IdTy, 51448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_class_ref" + 51548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 51648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 51748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = ClassPtrAlias; 5185efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 51971238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 5205efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Cast the pointer to a simplified version of the class structure 521db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateBitCast(ReceiverClass, 52296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual( 52347a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType::get(VMContext, IdTy, IdTy, NULL))); 5245efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Get the superclass pointer 525db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateStructGEP(ReceiverClass, 1); 5265efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Load the superclass pointer 527db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateLoad(ReceiverClass); 52820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Construct the structure used to look up the IMP 52947a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCSuperTy = llvm::StructType::get(VMContext, 53047a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson Receiver->getType(), IdTy, NULL); 531db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::Value *ObjCSuper = Builder.CreateAlloca(ObjCSuperTy); 532b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 533db831948f32217ece8410099f9982ef900c3b3c3David Chisnall Builder.CreateStore(Receiver, Builder.CreateStructGEP(ObjCSuper, 0)); 534db831948f32217ece8410099f9982ef900c3b3c3David Chisnall Builder.CreateStore(ReceiverClass, Builder.CreateStructGEP(ObjCSuper, 1)); 53520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 53620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the IMP 53726c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params; 53896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson Params.push_back(llvm::PointerType::getUnqual(ObjCSuperTy)); 53926c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params.push_back(SelectorTy); 540db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 541db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::Value *lookupArgs[] = {ObjCSuper, cmd}; 542db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::Value *imp; 543db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 544db831948f32217ece8410099f9982ef900c3b3c3David Chisnall if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 545db831948f32217ece8410099f9982ef900c3b3c3David Chisnall // The lookup function returns a slot, which can be safely cached. 546db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::Type *SlotTy = llvm::StructType::get(VMContext, PtrTy, PtrTy, PtrTy, 547db831948f32217ece8410099f9982ef900c3b3c3David Chisnall IntTy, llvm::PointerType::getUnqual(impType), NULL); 548db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 549db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::Constant *lookupFunction = 550db831948f32217ece8410099f9982ef900c3b3c3David Chisnall CGM.CreateRuntimeFunction(llvm::FunctionType::get( 551db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::PointerType::getUnqual(SlotTy), Params, true), 552db831948f32217ece8410099f9982ef900c3b3c3David Chisnall "objc_slot_lookup_super"); 553db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 554db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::CallInst *slot = Builder.CreateCall(lookupFunction, lookupArgs, 555db831948f32217ece8410099f9982ef900c3b3c3David Chisnall lookupArgs+2); 556db831948f32217ece8410099f9982ef900c3b3c3David Chisnall slot->setOnlyReadsMemory(); 557db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 558db831948f32217ece8410099f9982ef900c3b3c3David Chisnall imp = Builder.CreateLoad(Builder.CreateStructGEP(slot, 4)); 559db831948f32217ece8410099f9982ef900c3b3c3David Chisnall } else { 5601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Constant *lookupFunction = 56196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get( 56296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(impType), Params, true), 56326c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_msg_lookup_super"); 564db831948f32217ece8410099f9982ef900c3b3c3David Chisnall imp = Builder.CreateCall(lookupFunction, lookupArgs, lookupArgs+2); 565db831948f32217ece8410099f9982ef900c3b3c3David Chisnall } 56620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 567dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::Value *impMD[] = { 568dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::MDString::get(VMContext, Sel.getAsString()), 569dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::MDString::get(VMContext, Class->getSuperClass()->getNameAsString()), 570dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::ConstantInt::get(llvm::Type::getInt1Ty(VMContext), IsClassMessage) 571dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall }; 572dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::MDNode *node = llvm::MDNode::get(VMContext, impMD, 3); 573dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall 5744b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall llvm::Instruction *call; 5754b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall RValue msgRet = CGF.EmitCall(FnInfo, imp, ReturnValueSlot(), ActualArgs, 5764b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall 0, &call); 5774b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall call->setMetadata(msgSendMDKind, node); 5784b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall return msgRet; 57920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 58020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 5811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// Generate code for a message send expression. 5828f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCodeGen::RValue 5838f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCGObjCGNU::GenerateMessageSend(CodeGen::CodeGenFunction &CGF, 5847f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 5857f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 586f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 587df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 588c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall const ObjCInterfaceDecl *Class, 589df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method) { 590664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // Strip out message sends to retain / release in GC mode 591ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (CGM.getLangOptions().getGCMode() != LangOptions::NonGC) { 592ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == RetainSel || Sel == AutoreleaseSel) { 593ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return RValue::get(Receiver); 594ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 595ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == ReleaseSel) { 596ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return RValue::get(0); 597ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 598ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 599664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 600d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian CGBuilderTy &Builder = CGF.Builder; 601664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 602664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // If the return type is something that goes in an integer register, the 603664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // runtime will handle 0 returns. For other cases, we fill in the 0 value 604664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // ourselves. 605664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // 606664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // The language spec says the result of this kind of message send is 607664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // undefined, but lots of people seem to have forgotten to read that 608664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // paragraph and insist on sending messages to nil that have structure 609664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // returns. With GCC, this generates a random return value (whatever happens 610664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // to be on the stack / in those registers at the time) on most platforms, 611664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // and generates a SegV on SPARC. With LLVM it corrupts the stack. 612664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall bool isPointerSizedReturn = false; 613254e2d9e61dd0adb9c5e219d901f9872fd951728David Chisnall if (ResultType->isAnyPointerType() || ResultType->isIntegralType() || 614254e2d9e61dd0adb9c5e219d901f9872fd951728David Chisnall ResultType->isVoidType()) 615664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall isPointerSizedReturn = true; 616664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 617664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::BasicBlock *startBB = 0; 618664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::BasicBlock *messageBB = 0; 619664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::BasicBlock *contiueBB = 0; 620664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 621664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall if (!isPointerSizedReturn) { 622664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall startBB = Builder.GetInsertBlock(); 623664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall messageBB = CGF.createBasicBlock("msgSend"); 624664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall contiueBB = CGF.createBasicBlock("continue"); 625664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 626664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Value *isNil = Builder.CreateICmpEQ(Receiver, 627664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Constant::getNullValue(Receiver->getType())); 628664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall Builder.CreateCondBr(isNil, contiueBB, messageBB); 629664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall CGF.EmitBlock(messageBB); 630664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } 631664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 6320f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall IdTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(ASTIdTy)); 633df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::Value *cmd; 634df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian if (Method) 635d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian cmd = GetSelector(Builder, Method); 636df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian else 637d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian cmd = GetSelector(Builder, Sel); 638b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CallArgList ActualArgs; 639b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 640d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Receiver = Builder.CreateBitCast(Receiver, IdTy); 641b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back( 642d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::make_pair(RValue::get(Receiver), ASTIdTy)); 643b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back(std::make_pair(RValue::get(cmd), 644b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGF.getContext().getObjCSelType())); 645b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.insert(ActualArgs.end(), CallArgs.begin(), CallArgs.end()); 646b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 647b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CodeGenTypes &Types = CGM.getTypes(); 64804a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall const CGFunctionInfo &FnInfo = Types.getFunctionInfo(ResultType, ActualArgs, 649264ba48dc98f3f843935a485d5b086f7e0fdc4f1Rafael Espindola FunctionType::ExtInfo()); 6506793966aa221764f579cc8436bd641e1ec339c6dDaniel Dunbar const llvm::FunctionType *impType = 6516793966aa221764f579cc8436bd641e1ec339c6dDaniel Dunbar Types.GetFunctionType(FnInfo, Method ? Method->isVariadic() : false); 6520f984268b05edab2cc555a427c441baa9c252658Chris Lattner 65363e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall llvm::Value *impMD[] = { 65463e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall llvm::MDString::get(VMContext, Sel.getAsString()), 65563e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall llvm::MDString::get(VMContext, Class ? Class->getNameAsString() :""), 65663e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall llvm::ConstantInt::get(llvm::Type::getInt1Ty(VMContext), Class!=0) 65763e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall }; 65863e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall llvm::MDNode *node = llvm::MDNode::get(VMContext, impMD, 3); 65963e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall 66063e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall 66134e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian llvm::Value *imp; 66234e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian // For sender-aware dispatch, we pass the sender as the third argument to a 66334e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian // lookup function. When sending messages from C code, the sender is nil. 664d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // objc_msg_lookup_sender(id *receiver, SEL selector, id sender); 665d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 666d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 667d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<const llvm::Type*> Params; 668d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Value *ReceiverPtr = CGF.CreateTempAlloca(Receiver->getType()); 669d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Builder.CreateStore(Receiver, ReceiverPtr); 670d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Params.push_back(ReceiverPtr->getType()); 671d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Params.push_back(SelectorTy); 67234e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian llvm::Value *self; 67334e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian 67434e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian if (isa<ObjCMethodDecl>(CGF.CurFuncDecl)) { 67534e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian self = CGF.LoadObjCSelf(); 67634e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } else { 67703e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson self = llvm::ConstantPointerNull::get(IdTy); 67834e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } 679d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 68034e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian Params.push_back(self->getType()); 681d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 682d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // The lookup function returns a slot, which can be safely cached. 683d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Type *SlotTy = llvm::StructType::get(VMContext, PtrTy, PtrTy, PtrTy, 684d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IntTy, llvm::PointerType::getUnqual(impType), NULL); 6851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Constant *lookupFunction = 68696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get( 687d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::PointerType::getUnqual(SlotTy), Params, true), 68834e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian "objc_msg_lookup_sender"); 68926c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 690d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // The lookup function is guaranteed not to capture the receiver pointer. 691d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (llvm::Function *LookupFn = dyn_cast<llvm::Function>(lookupFunction)) { 692d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian LookupFn->setDoesNotCapture(1); 693d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 694d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 695866163bf6c66211a9b4d5ba160ac02de04ce4be6David Chisnall llvm::CallInst *slot = 696d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Builder.CreateCall3(lookupFunction, ReceiverPtr, cmd, self); 697866163bf6c66211a9b4d5ba160ac02de04ce4be6David Chisnall slot->setOnlyReadsMemory(); 69863e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall slot->setMetadata(msgSendMDKind, node); 699866163bf6c66211a9b4d5ba160ac02de04ce4be6David Chisnall 700d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian imp = Builder.CreateLoad(Builder.CreateStructGEP(slot, 4)); 701c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall 702d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // The lookup function may have changed the receiver, so make sure we use 703d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // the new one. 704d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ActualArgs[0] = 705d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::make_pair(RValue::get(Builder.CreateLoad(ReceiverPtr)), ASTIdTy); 70634e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } else { 707d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<const llvm::Type*> Params; 708d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Params.push_back(Receiver->getType()); 709d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Params.push_back(SelectorTy); 7101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Constant *lookupFunction = 71196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get( 71296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(impType), Params, true), 71334e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian "objc_msg_lookup"); 71434e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian 715d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian imp = Builder.CreateCall2(lookupFunction, Receiver, cmd); 71663e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall cast<llvm::CallInst>(imp)->setMetadata(msgSendMDKind, node); 71734e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } 7184b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall llvm::Instruction *call; 719dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall RValue msgRet = CGF.EmitCall(FnInfo, imp, ReturnValueSlot(), ActualArgs, 7204b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall 0, &call); 7214b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall call->setMetadata(msgSendMDKind, node); 722664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 723664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall if (!isPointerSizedReturn) { 724664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall CGF.EmitBlock(contiueBB); 725664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall if (msgRet.isScalar()) { 726664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Value *v = msgRet.getScalarVal(); 727664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::PHINode *phi = Builder.CreatePHI(v->getType()); 728664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(v, messageBB); 729664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(llvm::Constant::getNullValue(v->getType()), startBB); 730664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall msgRet = RValue::get(phi); 731664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } else if (msgRet.isAggregate()) { 732664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Value *v = msgRet.getAggregateAddr(); 733664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::PHINode *phi = Builder.CreatePHI(v->getType()); 734664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall const llvm::PointerType *RetTy = cast<llvm::PointerType>(v->getType()); 735866163bf6c66211a9b4d5ba160ac02de04ce4be6David Chisnall llvm::AllocaInst *NullVal = 736866163bf6c66211a9b4d5ba160ac02de04ce4be6David Chisnall CGF.CreateTempAlloca(RetTy->getElementType(), "null"); 737664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall CGF.InitTempAlloca(NullVal, 738664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Constant::getNullValue(RetTy->getElementType())); 739664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(v, messageBB); 740664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(NullVal, startBB); 741664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall msgRet = RValue::getAggregate(phi); 742664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } else /* isComplex() */ { 743664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall std::pair<llvm::Value*,llvm::Value*> v = msgRet.getComplexVal(); 744664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::PHINode *phi = Builder.CreatePHI(v.first->getType()); 745664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(v.first, messageBB); 746664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(llvm::Constant::getNullValue(v.first->getType()), 747664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall startBB); 748664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::PHINode *phi2 = Builder.CreatePHI(v.second->getType()); 749664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi2->addIncoming(v.second, messageBB); 750664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi2->addIncoming(llvm::Constant::getNullValue(v.second->getType()), 751664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall startBB); 752664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall msgRet = RValue::getComplex(phi, phi2); 753664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } 754664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } 755664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall return msgRet; 75620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 75720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 7581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// Generates a MethodList. Used in construction of a objc_class and 75920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// objc_category structures. 76020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateMethodList(const std::string &ClassName, 7611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const std::string &CategoryName, 7621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::SmallVectorImpl<Selector> &MethodSels, 7631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes, 76420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList) { 7650f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall if (MethodSels.empty()) 7660f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall return NULLPtr; 7671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 76847a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCMethodTy = llvm::StructType::get(VMContext, 76920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime creates it us. 77020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Method types 77196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(IMPTy), //Method pointer 77220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 77320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 77420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 77520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size(); i < e; ++i) { 77620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 7771e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian if (llvm::Constant *Method = 77820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov TheModule.getFunction(SymbolNameForMethod(ClassName, CategoryName, 779077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner MethodSels[i].getAsString(), 7801e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian isClassMethodList))) { 7818a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *C = MakeConstantString(MethodSels[i].getAsString()); 7828a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(C); 7838a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MethodTypes[i]); 7843c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Method = llvm::ConstantExpr::getBitCast(Method, 78596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(IMPTy)); 7861e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Elements.push_back(Method); 78708e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Methods.push_back(llvm::ConstantStruct::get(ObjCMethodTy, Elements)); 7881e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian } 78920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 79020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 79120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 79296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodTy, 7931e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Methods.size()); 7947db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *MethodArray = llvm::ConstantArray::get(ObjCMethodArrayTy, 795fba676396703e87a5034e5f308aa30a633468f66Chris Lattner Methods); 79620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 79720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing list pointer, array and array count 79820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<const llvm::Type*, 16> ObjCMethodListFields; 7998c8f69ec1477424e11faef6b235505584d61e522Owen Anderson llvm::PATypeHolder OpaqueNextTy = llvm::OpaqueType::get(VMContext); 80096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::Type *NextPtrTy = llvm::PointerType::getUnqual(OpaqueNextTy); 80147a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCMethodListTy = llvm::StructType::get(VMContext, 8021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NextPtrTy, 8031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump IntTy, 80420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodArrayTy, 80520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 80620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Refine next pointer type to concrete type 80720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::cast<llvm::OpaqueType>( 80820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov OpaqueNextTy.get())->refineAbstractTypeTo(ObjCMethodListTy); 80920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodListTy = llvm::cast<llvm::StructType>(OpaqueNextTy.get()); 81020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 81120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 81203e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson Methods.push_back(llvm::ConstantPointerNull::get( 81396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(ObjCMethodListTy))); 8140032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson Methods.push_back(llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), 81520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodTypes.size())); 81620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(MethodArray); 8171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 81820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 81920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodListTy, Methods, ".objc_method_list"); 82020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 82120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 82220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generates an IvarList. Used in construction of a objc_class. 82320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateIvarList( 82420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 82520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 82620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets) { 8271804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall if (IvarNames.size() == 0) 8281804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall return NULLPtr; 8291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 83047a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCIvarTy = llvm::StructType::get(VMContext, 83120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 83220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 83320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, 83420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 83520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 83620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 83720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = IvarNames.size() ; i < e ; i++) { 83820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 8398a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(IvarNames[i]); 8408a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(IvarTypes[i]); 84120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IvarOffsets[i]); 84208e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Ivars.push_back(llvm::ConstantStruct::get(ObjCIvarTy, Elements)); 84320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 84420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 84520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 84696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCIvarArrayTy = llvm::ArrayType::get(ObjCIvarTy, 84720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarNames.size()); 84820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 8491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 85020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 8514a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(IntTy, (int)IvarNames.size())); 8527db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson Elements.push_back(llvm::ConstantArray::get(ObjCIvarArrayTy, Ivars)); 85320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing array and array count 85447a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCIvarListTy = llvm::StructType::get(VMContext, IntTy, 85520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCIvarArrayTy, 85620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 85720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 85820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 85920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCIvarListTy, Elements, ".objc_ivar_list"); 8600f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 8610f984268b05edab2cc555a427c441baa9c252658Chris Lattner 86220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate a class structure 86320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateClassStructure( 86420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 86520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 86620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 867d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 86820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 86920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 87020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 87120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 872d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Protocols, 873d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *IvarOffsets, 8748c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall llvm::Constant *Properties, 8758c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall bool isMeta) { 87620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Set up the class structure 87720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Note: Several of these are char*s when they should be ids. This is 87820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // because the runtime performs this translation on load. 879d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // 880d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Fields marked New ABI are part of the GNUstep runtime. We emit them 881d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // anyway; the classes will still work with the GNU runtime, they will just 882d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // be ignored. 88347a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ClassTy = llvm::StructType::get(VMContext, 88420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // class_pointer 88520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // super_class 88620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // name 88720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // version 88820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // info 88920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // instance_size 89020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IVars->getType(), // ivars 89120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods->getType(), // methods 8921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // These are all filled in by the runtime, so we pretend 89320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // dtable 89420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // subclass_list 89520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // sibling_class 89620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // protocols 89720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // gc_object_type 898d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // New ABI: 899d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian LongTy, // abi_version 900d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IvarOffsets->getType(), // ivar_offsets 901d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties->getType(), // properties 90220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 9034a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::Constant *Zero = llvm::ConstantInt::get(LongTy, 0); 90420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Fill in the structure 90520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 9063c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(MetaClass, PtrToInt8Ty)); 90720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SuperClass); 908d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner Elements.push_back(MakeConstantString(Name, ".class_name")); 90920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Zero); 9104a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, info)); 91120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceSize); 91220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IVars); 91320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Methods); 914d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 915d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 916d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 9173c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(Protocols, PtrTy)); 918d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 919d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(Zero); 920d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(IvarOffsets); 921d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(Properties); 92220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 92341d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // This is now an externally visible symbol, so that we can speed up class 92441d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // messages in the next ABI. 9258c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall return MakeGlobal(ClassTy, Elements, (isMeta ? "_OBJC_METACLASS_": 9268c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall "_OBJC_CLASS_") + std::string(Name), llvm::GlobalValue::ExternalLinkage); 92720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 92820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 92920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateProtocolMethodList( 93020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames, 93120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes) { 9321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 93347a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCMethodDescTy = llvm::StructType::get(VMContext, 93420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime does the casting for us. 93520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 93620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 93720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 93820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 93920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size() ; i < e ; i++) { 94020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 9411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(MethodNames[i]); 9428a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MethodTypes[i]); 94308e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Methods.push_back(llvm::ConstantStruct::get(ObjCMethodDescTy, Elements)); 94420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 94596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodDescTy, 94620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodNames.size()); 9477db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *Array = llvm::ConstantArray::get(ObjCMethodArrayTy, 948bb1c8600218b3244340331165fc7cba7bf227655Mike Stump Methods); 94947a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCMethodDescListTy = llvm::StructType::get(VMContext, 95020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, ObjCMethodArrayTy, NULL); 95120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 9524a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Methods.push_back(llvm::ConstantInt::get(IntTy, MethodNames.size())); 95320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(Array); 95420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodDescListTy, Methods, ".objc_method_list"); 95520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 956bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 95720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// Create the protocol list structure used in classes, categories and so on 95820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateProtocolList( 95920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols) { 96096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 96120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Protocols.size()); 96247a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ProtocolListTy = llvm::StructType::get(VMContext, 96320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, //Should be a recurisve pointer, but it's always NULL here. 96420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy,//FIXME: Should be size_t 96520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolArrayTy, 96620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 9671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 96820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (const std::string *iter = Protocols.begin(), *endIter = Protocols.end(); 96920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != endIter ; iter++) { 970ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall llvm::Constant *protocol = 0; 971ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall llvm::StringMap<llvm::Constant*>::iterator value = 972ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall ExistingProtocols.find(*iter); 973ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall if (value == ExistingProtocols.end()) { 974f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian protocol = GenerateEmptyProtocol(*iter); 975ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall } else { 976ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall protocol = value->getValue(); 977ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall } 9783c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::Constant *Ptr = llvm::ConstantExpr::getBitCast(protocol, 979a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson PtrToInt8Ty); 98020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Ptr); 98120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 9827db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 98320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements); 98420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 98520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 9864a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, Protocols.size())); 98720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolArray); 98820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ProtocolListTy, Elements, ".objc_protocol_list"); 98920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 99020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 9911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpllvm::Value *CGObjCGNU::GenerateProtocolRef(CGBuilderTy &Builder, 992af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD) { 993f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Value *protocol = ExistingProtocols[PD->getNameAsString()]; 9941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::Type *T = 995f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian CGM.getTypes().ConvertType(CGM.getContext().getObjCProtoType()); 99696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson return Builder.CreateBitCast(protocol, llvm::PointerType::getUnqual(T)); 997f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian} 998f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 999f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanianllvm::Constant *CGObjCGNU::GenerateEmptyProtocol( 1000f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian const std::string &ProtocolName) { 1001f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::SmallVector<std::string, 0> EmptyStringVector; 1002f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 0> EmptyConstantVector; 1003f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 1004f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *ProtocolList = GenerateProtocolList(EmptyStringVector); 1005d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *MethodList = 1006f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian GenerateProtocolMethodList(EmptyConstantVector, EmptyConstantVector); 1007f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // Protocols are objects containing lists of the methods implemented and 1008f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // protocols adopted. 100947a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ProtocolTy = llvm::StructType::get(VMContext, IdTy, 1010f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian PtrToInt8Ty, 1011f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian ProtocolList->getType(), 1012d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1013d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1014d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1015d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1016f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian NULL); 10171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 1018f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // The isa pointer must be set to a magic number so the runtime knows it's 1019f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // the correct layout. 1020d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian int Version = CGM.getContext().getLangOptions().ObjCNonFragileABI ? 1021d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NonFragileProtocolVersion : ProtocolVersion; 10223c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getIntToPtr( 1023d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), Version), IdTy)); 1024f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 1025f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(ProtocolList); 1026d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1027d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1028d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1029d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1030f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian return MakeGlobal(ProtocolTy, Elements, ".objc_protocol"); 103120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 103220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1033af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbarvoid CGObjCGNU::GenerateProtocol(const ObjCProtocolDecl *PD) { 1034af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar ASTContext &Context = CGM.getContext(); 10358ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ProtocolName = PD->getNameAsString(); 1036af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 1037af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar for (ObjCProtocolDecl::protocol_iterator PI = PD->protocol_begin(), 1038af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar E = PD->protocol_end(); PI != E; ++PI) 1039d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*PI)->getNameAsString()); 1040af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodNames; 1041af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 1042d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 16> OptionalInstanceMethodNames; 1043d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 16> OptionalInstanceMethodTypes; 104417945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (ObjCProtocolDecl::instmeth_iterator iter = PD->instmeth_begin(), 104517945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis E = PD->instmeth_end(); iter != E; iter++) { 1046af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 1047af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl(*iter, TypeStr); 1048d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if ((*iter)->getImplementationControl() == ObjCMethodDecl::Optional) { 1049d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodNames.push_back( 1050d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1051d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 1052d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1053d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodNames.push_back( 1054d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1055d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 1056d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1057af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 1058af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar // Collect information about class methods: 1059af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodNames; 1060af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 1061d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 16> OptionalClassMethodNames; 1062d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 16> OptionalClassMethodTypes; 10631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCProtocolDecl::classmeth_iterator 106417945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = PD->classmeth_begin(), endIter = PD->classmeth_end(); 106517945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter != endIter ; iter++) { 1066af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 1067af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 1068d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if ((*iter)->getImplementationControl() == ObjCMethodDecl::Optional) { 1069d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassMethodNames.push_back( 1070d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1071d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 1072d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1073d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodNames.push_back( 1074d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1075d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodTypes.push_back(MakeConstantString(TypeStr)); 1076d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1077af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 107820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 107920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ProtocolList = GenerateProtocolList(Protocols); 108020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceMethodList = 108120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(InstanceMethodNames, InstanceMethodTypes); 108220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = 108320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(ClassMethodNames, ClassMethodTypes); 1084d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalInstanceMethodList = 1085d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolMethodList(OptionalInstanceMethodNames, 1086d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodTypes); 1087d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalClassMethodList = 1088d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolMethodList(OptionalClassMethodNames, 1089d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodTypes); 1090d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1091d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Property metadata: name, attributes, isSynthesized, setter name, setter 1092d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // types, getter name, getter types. 1093d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // The isSynthesized value is always set to 0 in a protocol. It exists to 1094d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // simplify the runtime library by allowing it to use the same data 1095d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // structures for protocol metadata everywhere. 1096d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::StructType *PropertyMetadataTy = llvm::StructType::get(VMContext, 1097d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, Int8Ty, Int8Ty, PtrToInt8Ty, PtrToInt8Ty, PtrToInt8Ty, 1098d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, NULL); 1099d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Properties; 1100d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> OptionalProperties; 1101d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1102d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all of the property methods need adding to the method list and to the 1103d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // property metadata list. 1104d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (ObjCContainerDecl::prop_iterator 1105d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter = PD->prop_begin(), endIter = PD->prop_end(); 1106d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1107d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Fields; 1108d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ObjCPropertyDecl *property = (*iter); 1109d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1110d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(property->getNameAsString())); 1111d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 1112d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian property->getPropertyAttributes())); 1113d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 0)); 1114d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *getter = property->getGetterMethodDecl()) { 1115d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1116d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(getter,TypeStr); 1117d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 1118d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(TypeEncoding); 1119d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(getter->getSelector().getAsString())); 1120d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1121d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1122d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1123d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1124d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1125d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *setter = property->getSetterMethodDecl()) { 1126d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1127d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(setter,TypeStr); 1128d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 1129d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(TypeEncoding); 1130d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(setter->getSelector().getAsString())); 1131d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1132d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1133d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1134d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1135d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1136d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (property->getPropertyImplementation() == ObjCPropertyDecl::Optional) { 1137d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalProperties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1138d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1139d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1140d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1141d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1142d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyArray = llvm::ConstantArray::get( 1143d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType::get(PropertyMetadataTy, Properties.size()), Properties); 1144d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* PropertyListInitFields[] = 1145d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian {llvm::ConstantInt::get(IntTy, Properties.size()), NULLPtr, PropertyArray}; 1146d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1147d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyListInit = 11480d36dd28bb40b08a93d7f64196794882eee08ee8Nick Lewycky llvm::ConstantStruct::get(VMContext, PropertyListInitFields, 3, false); 1149d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyList = new llvm::GlobalVariable(TheModule, 1150d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyListInit->getType(), false, llvm::GlobalValue::InternalLinkage, 1151d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyListInit, ".objc_property_list"); 1152d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1153d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyArray = 1154d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantArray::get(llvm::ArrayType::get(PropertyMetadataTy, 1155d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalProperties.size()) , OptionalProperties); 1156d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* OptionalPropertyListInitFields[] = { 1157d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantInt::get(IntTy, OptionalProperties.size()), NULLPtr, 1158d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyArray }; 1159d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1160d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyListInit = 11610d36dd28bb40b08a93d7f64196794882eee08ee8Nick Lewycky llvm::ConstantStruct::get(VMContext, OptionalPropertyListInitFields, 3, false); 1162d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyList = new llvm::GlobalVariable(TheModule, 1163d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyListInit->getType(), false, 1164d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::InternalLinkage, OptionalPropertyListInit, 1165d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ".objc_property_list"); 1166d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 116720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocols are objects containing lists of the methods implemented and 116820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // protocols adopted. 116947a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ProtocolTy = llvm::StructType::get(VMContext, IdTy, 117020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 117120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolList->getType(), 117220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov InstanceMethodList->getType(), 117320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ClassMethodList->getType(), 1174d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodList->getType(), 1175d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodList->getType(), 1176d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyList->getType(), 1177d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyList->getType(), 117820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 11791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 118020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The isa pointer must be set to a magic number so the runtime knows it's 118120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // the correct layout. 1182d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian int Version = CGM.getContext().getLangOptions().ObjCNonFragileABI ? 1183d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NonFragileProtocolVersion : ProtocolVersion; 11843c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getIntToPtr( 1185d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), Version), IdTy)); 118620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 118720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolList); 118820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceMethodList); 118920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassMethodList); 1190d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalInstanceMethodList); 1191d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalClassMethodList); 1192d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(PropertyList); 1193d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalPropertyList); 11941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ExistingProtocols[ProtocolName] = 11953c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolTy, Elements, 119620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_protocol"), IdTy); 119720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 1198d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianvoid CGObjCGNU::GenerateProtocolHolderCategory(void) { 1199d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Collect information about instance methods 1200d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<Selector, 1> MethodSels; 1201d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 1> MethodTypes; 1202d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1203d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Elements; 1204d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const std::string ClassName = "__ObjC_Protocol_Holder_Ugly_Hack"; 1205d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const std::string CategoryName = "AnotherHack"; 1206d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MakeConstantString(CategoryName)); 1207d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MakeConstantString(ClassName)); 1208d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Instance method list 1209d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1210d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassName, CategoryName, MethodSels, MethodTypes, false), PtrTy)); 1211d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Class method list 1212d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1213d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassName, CategoryName, MethodSels, MethodTypes, true), PtrTy)); 1214d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Protocol list 1215d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrTy, 1216d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.size()); 1217d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::StructType *ProtocolListTy = llvm::StructType::get(VMContext, 1218d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy, //Should be a recurisve pointer, but it's always NULL here. 1219d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian LongTy,//FIXME: Should be size_t 1220d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolArrayTy, 1221d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NULL); 1222d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> ProtocolElements; 1223d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (llvm::StringMapIterator<llvm::Constant*> iter = 1224d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.begin(), endIter = ExistingProtocols.end(); 1225d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1226d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Ptr = llvm::ConstantExpr::getBitCast(iter->getValue(), 1227d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy); 1228d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(Ptr); 1229d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1230d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 1231d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements); 1232d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.clear(); 1233d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(NULLPtr); 1234d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(llvm::ConstantInt::get(LongTy, 1235d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.size())); 1236d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(ProtocolArray); 1237d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolListTy, 1238d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements, ".objc_protocol_list"), PtrTy)); 1239d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Categories.push_back(llvm::ConstantExpr::getBitCast( 1240d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeGlobal(llvm::StructType::get(VMContext, PtrToInt8Ty, PtrToInt8Ty, 1241d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy, PtrTy, PtrTy, NULL), Elements), PtrTy)); 1242d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian} 124320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 12447ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateCategory(const ObjCCategoryImplDecl *OCD) { 12458ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = OCD->getClassInterface()->getNameAsString(); 12468ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string CategoryName = OCD->getNameAsString(); 12477ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 12487ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> InstanceMethodSels; 12497ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 1250653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCCategoryImplDecl::instmeth_iterator 125117945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->instmeth_begin(), endIter = OCD->instmeth_end(); 1252653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 12537ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 12547ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 12557ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 12568a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 12577ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 12587ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 12597ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 12607ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> ClassMethodSels; 12617ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 12621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCCategoryImplDecl::classmeth_iterator 126317945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->classmeth_begin(), endIter = OCD->classmeth_end(); 1264653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 12657ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 12667ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 12677ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 12688a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 12697ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 12707ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 12717ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 12727ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 1273ad9e06d82ae627e858e5bfe4a7f1f9337b5b0a15David Chisnall const ObjCCategoryDecl *CatDecl = OCD->getCategoryDecl(); 1274ad9e06d82ae627e858e5bfe4a7f1f9337b5b0a15David Chisnall const ObjCList<ObjCProtocolDecl> &Protos = CatDecl->getReferencedProtocols(); 12757ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCList<ObjCProtocolDecl>::iterator I = Protos.begin(), 12767ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar E = Protos.end(); I != E; ++I) 1277d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 12787ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 127920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 128020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(CategoryName)); 128120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ClassName)); 12821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Instance method list 12833c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1284a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, InstanceMethodSels, InstanceMethodTypes, 128520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov false), PtrTy)); 128620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Class method list 12873c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1288a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, ClassMethodSels, ClassMethodTypes, true), 128920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy)); 129020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocol list 12913c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast( 129220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolList(Protocols), PtrTy)); 12933c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Categories.push_back(llvm::ConstantExpr::getBitCast( 12941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump MakeGlobal(llvm::StructType::get(VMContext, PtrToInt8Ty, PtrToInt8Ty, 129547a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson PtrTy, PtrTy, PtrTy, NULL), Elements), PtrTy)); 129620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 12977ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 1298d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianllvm::Constant *CGObjCGNU::GeneratePropertyList(const ObjCImplementationDecl *OID, 1299d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVectorImpl<Selector> &InstanceMethodSels, 1300d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVectorImpl<llvm::Constant*> &InstanceMethodTypes) { 1301d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ASTContext &Context = CGM.getContext(); 1302d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // 1303d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Property metadata: name, attributes, isSynthesized, setter name, setter 1304d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // types, getter name, getter types. 1305d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::StructType *PropertyMetadataTy = llvm::StructType::get(VMContext, 1306d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, Int8Ty, Int8Ty, PtrToInt8Ty, PtrToInt8Ty, PtrToInt8Ty, 1307d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, NULL); 1308d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Properties; 1309d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1310d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1311d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all of the property methods need adding to the method list and to the 1312d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // property metadata list. 1313d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (ObjCImplDecl::propimpl_iterator 1314d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter = OID->propimpl_begin(), endIter = OID->propimpl_end(); 1315d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1316d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Fields; 1317d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ObjCPropertyDecl *property = (*iter)->getPropertyDecl(); 131842ba04a072c69d84a6660e4498215086662910acDavid Chisnall ObjCPropertyImplDecl *propertyImpl = *iter; 131942ba04a072c69d84a6660e4498215086662910acDavid Chisnall bool isSynthesized = (propertyImpl->getPropertyImplementation() == 132042ba04a072c69d84a6660e4498215086662910acDavid Chisnall ObjCPropertyImplDecl::Synthesize); 1321d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1322d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(property->getNameAsString())); 1323d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 1324d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian property->getPropertyAttributes())); 132542ba04a072c69d84a6660e4498215086662910acDavid Chisnall Fields.push_back(llvm::ConstantInt::get(Int8Ty, isSynthesized)); 1326d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *getter = property->getGetterMethodDecl()) { 1327d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1328d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(getter,TypeStr); 1329d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 133042ba04a072c69d84a6660e4498215086662910acDavid Chisnall if (isSynthesized) { 133142ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodTypes.push_back(TypeEncoding); 133242ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodSels.push_back(getter->getSelector()); 133342ba04a072c69d84a6660e4498215086662910acDavid Chisnall } 1334d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(getter->getSelector().getAsString())); 1335d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1336d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1337d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1338d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1339d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1340d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *setter = property->getSetterMethodDecl()) { 1341d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1342d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(setter,TypeStr); 1343d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 134442ba04a072c69d84a6660e4498215086662910acDavid Chisnall if (isSynthesized) { 134542ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodTypes.push_back(TypeEncoding); 134642ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodSels.push_back(setter->getSelector()); 134742ba04a072c69d84a6660e4498215086662910acDavid Chisnall } 1348d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(setter->getSelector().getAsString())); 1349d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1350d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1351d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1352d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1353d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1354d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1355d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1356d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType *PropertyArrayTy = 1357d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType::get(PropertyMetadataTy, Properties.size()); 1358d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyArray = llvm::ConstantArray::get(PropertyArrayTy, 1359d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties); 1360d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* PropertyListInitFields[] = 1361d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian {llvm::ConstantInt::get(IntTy, Properties.size()), NULLPtr, PropertyArray}; 1362d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1363d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyListInit = 13640d36dd28bb40b08a93d7f64196794882eee08ee8Nick Lewycky llvm::ConstantStruct::get(VMContext, PropertyListInitFields, 3, false); 1365d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian return new llvm::GlobalVariable(TheModule, PropertyListInit->getType(), false, 1366d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::InternalLinkage, PropertyListInit, 1367d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ".objc_property_list"); 1368d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian} 1369d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 13707ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateClass(const ObjCImplementationDecl *OID) { 13717ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ASTContext &Context = CGM.getContext(); 13727ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 13737ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the superclass name. 13741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCInterfaceDecl * SuperClassDecl = 13757ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar OID->getClassInterface()->getSuperClass(); 13768ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string SuperClassName; 13772a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (SuperClassDecl) { 13788ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner SuperClassName = SuperClassDecl->getNameAsString(); 13792a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner EmitClassRef(SuperClassName); 13802a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 13817ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 13827ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the class name 138309dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner ObjCInterfaceDecl *ClassDecl = 138409dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner const_cast<ObjCInterfaceDecl *>(OID->getClassInterface()); 13858ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = ClassDecl->getNameAsString(); 13862a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // Emit the symbol that is used to generate linker errors if this class is 13872a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // referenced in other modules but not declared. 1388c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian std::string classSymbolName = "__objc_class_name_" + ClassName; 13891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (llvm::GlobalVariable *symbol = 1390c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian TheModule.getGlobalVariable(classSymbolName)) { 13914a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson symbol->setInitializer(llvm::ConstantInt::get(LongTy, 0)); 1392c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } else { 13931c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, LongTy, false, 13944a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::GlobalValue::ExternalLinkage, llvm::ConstantInt::get(LongTy, 0), 13951c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson classSymbolName); 1396c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } 13971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13982bebbf0acee55404de4b8846713b64429e744e8fDaniel Dunbar // Get the size of instances. 13992bebbf0acee55404de4b8846713b64429e744e8fDaniel Dunbar int instanceSize = Context.getASTObjCImplementationLayout(OID).getSize() / 8; 14007ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 14017ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance variables. 14027ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarNames; 14037ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarTypes; 14047ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarOffsets; 14051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1406d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> IvarOffsetValues; 1407d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 14081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump int superInstanceSize = !SuperClassDecl ? 0 : 14099cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Context.getASTObjCInterfaceLayout(SuperClassDecl).getSize() / 8; 14109cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // For non-fragile ivars, set the instance size to 0 - {the size of just this 14119cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // class}. The runtime will then set this to the correct value on load. 14129cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 14139cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian instanceSize = 0 - (instanceSize - superInstanceSize); 14149cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 14157f63cb098f2461643f71ea590c1a477603f27f63David Chisnall 14167f63cb098f2461643f71ea590c1a477603f27f63David Chisnall // Collect declared and synthesized ivars. 14177f63cb098f2461643f71ea590c1a477603f27f63David Chisnall llvm::SmallVector<ObjCIvarDecl*, 16> OIvars; 14187f63cb098f2461643f71ea590c1a477603f27f63David Chisnall CGM.getContext().ShallowCollectObjCIvars(ClassDecl, OIvars); 14197f63cb098f2461643f71ea590c1a477603f27f63David Chisnall 14207f63cb098f2461643f71ea590c1a477603f27f63David Chisnall for (unsigned i = 0, e = OIvars.size(); i != e; ++i) { 14217f63cb098f2461643f71ea590c1a477603f27f63David Chisnall ObjCIvarDecl *IVD = OIvars[i]; 14227ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Store the name 14237f63cb098f2461643f71ea590c1a477603f27f63David Chisnall IvarNames.push_back(MakeConstantString(IVD->getNameAsString())); 14247ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the type encoding for this ivar 14257ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 14267f63cb098f2461643f71ea590c1a477603f27f63David Chisnall Context.getObjCEncodingForType(IVD->getType(), TypeStr); 14278a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarTypes.push_back(MakeConstantString(TypeStr)); 14287ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the offset 1429d901da531433254210a08e8b1f9e1ad049b340aaDavid Chisnall uint64_t BaseOffset = ComputeIvarBaseOffset(CGM, OID, IVD); 1430aecbf24a6bad049437f8fec97e557d414003a3dbDavid Chisnall uint64_t Offset = BaseOffset; 14319cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 1432d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Offset = BaseOffset - superInstanceSize; 14339cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 14347ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar IvarOffsets.push_back( 14350032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), Offset)); 1436d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IvarOffsetValues.push_back(new llvm::GlobalVariable(TheModule, IntTy, 1437d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian false, llvm::GlobalValue::ExternalLinkage, 1438d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantInt::get(IntTy, BaseOffset), 1439d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian "__objc_ivar_offset_value_" + ClassName +"." + 14407f63cb098f2461643f71ea590c1a477603f27f63David Chisnall IVD->getNameAsString())); 14417ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 1442d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *IvarOffsetArrayInit = 1443d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantArray::get(llvm::ArrayType::get(PtrToIntTy, 1444d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IvarOffsetValues.size()), IvarOffsetValues); 1445d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalVariable *IvarOffsetArray = new llvm::GlobalVariable(TheModule, 1446d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IvarOffsetArrayInit->getType(), false, 1447d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::InternalLinkage, IvarOffsetArrayInit, 1448d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ".ivar.offsets"); 14497ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 14507ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 14517ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> InstanceMethodSels; 14527ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 14531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCImplementationDecl::instmeth_iterator 145417945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->instmeth_begin(), endIter = OID->instmeth_end(); 1455653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 14567ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 14577ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 14587ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 14598a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 14607ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 1461d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1462d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Properties = GeneratePropertyList(OID, InstanceMethodSels, 1463d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes); 1464d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 14657ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 14667ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 14677ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> ClassMethodSels; 14687ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 1469653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCImplementationDecl::classmeth_iterator 147017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->classmeth_begin(), endIter = OID->classmeth_end(); 1471653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 14727ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 14737ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 14747ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 14758a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 14767ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 14777ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 14787ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 14797ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCList<ObjCProtocolDecl> &Protos =ClassDecl->getReferencedProtocols(); 14807ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCList<ObjCProtocolDecl>::iterator I = Protos.begin(), 14817ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar E = Protos.end(); I != E; ++I) 1482d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 14837ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 14847ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 14857ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 148620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the superclass pointer. 148720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass; 14888ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner if (!SuperClassName.empty()) { 148920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov SuperClass = MakeConstantString(SuperClassName, ".super_class_name"); 149020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } else { 149103e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson SuperClass = llvm::ConstantPointerNull::get(PtrToInt8Ty); 149220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 149320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Empty vector used to construct empty method lists 149420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<llvm::Constant*, 1> empty; 149520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the method and instance variable lists 149620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MethodList = GenerateMethodList(ClassName, "", 1497a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner InstanceMethodSels, InstanceMethodTypes, false); 149820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = GenerateMethodList(ClassName, "", 1499a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassMethodSels, ClassMethodTypes, true); 150020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IvarList = GenerateIvarList(IvarNames, IvarTypes, 150120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarOffsets); 15021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Irrespective of whether we are compiling for a fragile or non-fragile ABI, 15038a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // we emit a symbol containing the offset for each ivar in the class. This 15048a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // allows code compiled for the non-Fragile ABI to inherit from code compiled 15058a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // for the legacy ABI, without causing problems. The converse is also 15068a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // possible, but causes all ivar accesses to be fragile. 15078a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall int i = 0; 15088a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Offset pointer for getting at the correct field in the ivar list when 15098a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // setting up the alias. These are: The base address for the global, the 15108a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // ivar array (second field), the ivar in this list (set for each ivar), and 15118a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // the offset (third field in ivar structure) 15128a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall const llvm::Type *IndexTy = llvm::Type::getInt32Ty(VMContext); 15138a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *offsetPointerIndexes[] = {Zeros[0], 15141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::ConstantInt::get(IndexTy, 1), 0, 15158a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::ConstantInt::get(IndexTy, 2) }; 15168a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall 15178a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall for (ObjCInterfaceDecl::ivar_iterator iter = ClassDecl->ivar_begin(), 15188a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall endIter = ClassDecl->ivar_end() ; iter != endIter ; iter++) { 15198a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall const std::string Name = "__objc_ivar_offset_" + ClassName + '.' 15208a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall +(*iter)->getNameAsString(); 15218a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offsetPointerIndexes[2] = llvm::ConstantInt::get(IndexTy, i++); 15228a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Get the correct ivar field 15238a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *offsetValue = llvm::ConstantExpr::getGetElementPtr( 15248a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarList, offsetPointerIndexes, 4); 15258a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Get the existing alias, if one exists. 15268a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *offset = TheModule.getNamedGlobal(Name); 15278a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (offset) { 15288a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offset->setInitializer(offsetValue); 15298a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // If this is the real definition, change its linkage type so that 15308a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // different modules will use this one, rather than their private 15318a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // copy. 15328a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offset->setLinkage(llvm::GlobalValue::ExternalLinkage); 15338a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } else { 15348a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Add a new alias if there isn't one already. 15358a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offset = new llvm::GlobalVariable(TheModule, offsetValue->getType(), 15368a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall false, llvm::GlobalValue::ExternalLinkage, offsetValue, Name); 15378a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 15388a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 153920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //Generate metaclass for class methods 154020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClassStruct = GenerateClassStructure(NULLPtr, 15411804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall NULLPtr, 0x12L, ClassName.c_str(), 0, Zeros[0], GenerateIvarList( 15428c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall empty, empty, empty), ClassMethodList, NULLPtr, NULLPtr, NULLPtr, true); 15435efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 154420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the class structure 15458ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner llvm::Constant *ClassStruct = 1546d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateClassStructure(MetaClassStruct, SuperClass, 0x11L, 15478ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner ClassName.c_str(), 0, 15484a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::ConstantInt::get(LongTy, instanceSize), IvarList, 1549d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList, GenerateProtocolList(Protocols), IvarOffsetArray, 1550d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties); 15515efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 15525efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Resolve the class aliases, if they exist. 15535efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (ClassPtrAlias) { 15545efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ClassPtrAlias->setAliasee( 15553c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(ClassStruct, IdTy)); 15565efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ClassPtrAlias = 0; 15575efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 15585efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (MetaClassPtrAlias) { 15595efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias->setAliasee( 15603c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(MetaClassStruct, IdTy)); 15615efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias = 0; 15625efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 15635efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 156420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Add class structure to list to be added to the symtab later 15653c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson ClassStruct = llvm::ConstantExpr::getBitCast(ClassStruct, PtrToInt8Ty); 156620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(ClassStruct); 156720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 156820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1569c38e9affd4519ea199af22419c8c794973cc4b23Fariborz Jahanian 15701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpllvm::Function *CGObjCGNU::ModuleInitFunction() { 157120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Only emit an ObjC load function if no Objective-C stuff has been called 157220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov if (Classes.empty() && Categories.empty() && ConstantStrings.empty() && 157320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ExistingProtocols.empty() && TypedSelectors.empty() && 15745f58b911304f7d114f929d1726a09cd1c828a5ddAnton Korobeynikov UntypedSelectors.empty()) 157520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return NULL; 15761b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 1577d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all referenced protocols to a category. 1578d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolHolderCategory(); 1579d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1580e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::StructType *SelStructTy = dyn_cast<llvm::StructType>( 1581e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelectorTy->getElementType()); 1582e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::Type *SelStructPtrTy = SelectorTy; 1583e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner bool isSelOpaque = false; 1584e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (SelStructTy == 0) { 158547a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson SelStructTy = llvm::StructType::get(VMContext, PtrToInt8Ty, 158647a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson PtrToInt8Ty, NULL); 158796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson SelStructPtrTy = llvm::PointerType::getUnqual(SelStructTy); 1588e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner isSelOpaque = true; 1589e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 1590e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 15911b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman // Name the ObjC types to make the IR a bit easier to read 1592e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner TheModule.addTypeName(".objc_selector", SelStructPtrTy); 15931b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman TheModule.addTypeName(".objc_id", IdTy); 15941b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman TheModule.addTypeName(".objc_imp", IMPTy); 15951b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 159620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 159771238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::Constant *Statics = NULLPtr; 159820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate statics list: 159971238f67c5df13eef19450d66b7a7ab28377192aChris Lattner if (ConstantStrings.size()) { 160096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *StaticsArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 160171238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.size() + 1); 160271238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.push_back(NULLPtr); 16038a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall 16041b0969590e712d7d52fc9c0d43d3ab85c36d07a6Daniel Dunbar llvm::StringRef StringClass = CGM.getLangOptions().ObjCConstantStringClass; 16051b0969590e712d7d52fc9c0d43d3ab85c36d07a6Daniel Dunbar if (StringClass.empty()) StringClass = "NXConstantString"; 16068a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MakeConstantString(StringClass, 16078a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ".objc_static_class_name")); 16087db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson Elements.push_back(llvm::ConstantArray::get(StaticsArrayTy, 160971238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings)); 16101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::StructType *StaticsListTy = 161147a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType::get(VMContext, PtrToInt8Ty, StaticsArrayTy, NULL); 1612a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson llvm::Type *StaticsListPtrTy = 161396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(StaticsListTy); 161471238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListTy, Elements, ".objc_statics"); 16151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::ArrayType *StaticsListArrayTy = 161696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType::get(StaticsListPtrTy, 2); 161771238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.clear(); 161871238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.push_back(Statics); 1619c9c88b4159791c48e486ca94e3743b5979e2b7a6Owen Anderson Elements.push_back(llvm::Constant::getNullValue(StaticsListPtrTy)); 162071238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListArrayTy, Elements, ".objc_statics_ptr"); 16213c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Statics = llvm::ConstantExpr::getBitCast(Statics, PtrTy); 162271238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 162320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of classes, categories, and constant objects 162496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ClassListTy = llvm::ArrayType::get(PtrToInt8Ty, 162520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size() + Categories.size() + 2); 16261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::StructType *SymTabTy = llvm::StructType::get(VMContext, 162747a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson LongTy, SelStructPtrTy, 16280032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getInt16Ty(VMContext), 16290032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getInt16Ty(VMContext), 1630630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ClassListTy, NULL); 163120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 163220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 163320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Pointer to an array of selectors used in this module. 163420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Selectors; 163520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (std::map<TypedSelector, llvm::GlobalAlias*>::iterator 163620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter = TypedSelectors.begin(), iterEnd = TypedSelectors.end(); 163720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd ; ++iter) { 1638d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(ExportUniqueString(iter->first.first, ".objc_sel_name")); 1639a7c5b0832cc78efa899463b8faa573a1473d53d2David Chisnall Elements.push_back(MakeConstantString(iter->first.second, 1640630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ".objc_sel_types")); 164108e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 164220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 164320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 164420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (llvm::StringMap<llvm::GlobalAlias*>::iterator 164520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter = UntypedSelectors.begin(), iterEnd = UntypedSelectors.end(); 1646630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner iter != iterEnd; ++iter) { 164720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( 1648d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExportUniqueString(iter->getKeyData(), ".objc_sel_name")); 164920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 165008e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 165120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 165220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 165320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 165420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 165508e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 165620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 165720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of static selectors 16584a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, Selectors.size() )); 165920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SelectorList = MakeGlobal( 166096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType::get(SelStructTy, Selectors.size()), Selectors, 166120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_selector_list"); 16621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantExpr::getBitCast(SelectorList, 1663e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelStructPtrTy)); 166420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 166520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Now that all of the static selectors exist, create pointers to them. 166620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov int index = 0; 166720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (std::map<TypedSelector, llvm::GlobalAlias*>::iterator 166820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter=TypedSelectors.begin(), iterEnd =TypedSelectors.end(); 166920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd; ++iter) { 167020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 16710032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), index++), Zeros[0]}; 16726d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar llvm::Constant *SelPtr = new llvm::GlobalVariable(TheModule, SelStructPtrTy, 167387935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall true, llvm::GlobalValue::LinkOnceAnyLinkage, 16746d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar llvm::ConstantExpr::getGetElementPtr(SelectorList, Idxs, 2), 167587935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall ".objc_sel_ptr"+iter->first.first+"."+MangleSelectorTypes(iter->first.second)); 1676e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // If selectors are defined as an opaque type, cast the pointer to this 1677e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // type. 1678e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (isSelOpaque) { 16796d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar SelPtr = llvm::ConstantExpr::getBitCast(SelPtr, 16806d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar llvm::PointerType::getUnqual(SelectorTy)); 1681e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 168287935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall (*iter).second->replaceAllUsesWith(SelPtr); 168387935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall (*iter).second->eraseFromParent(); 168420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 168520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (llvm::StringMap<llvm::GlobalAlias*>::iterator 168620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter=UntypedSelectors.begin(), iterEnd = UntypedSelectors.end(); 168720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd; iter++) { 168820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 16890032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), index++), Zeros[0]}; 169087935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall llvm::Constant *SelPtr = new llvm::GlobalVariable(TheModule, SelStructPtrTy, 169187935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall true, llvm::GlobalValue::LinkOnceAnyLinkage, 169287935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall llvm::ConstantExpr::getGetElementPtr(SelectorList, Idxs, 2), 169387935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall ".objc_sel_ptr"+iter->getKey()); 1694e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // If selectors are defined as an opaque type, cast the pointer to this 1695e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // type. 1696e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (isSelOpaque) { 16976d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar SelPtr = llvm::ConstantExpr::getBitCast(SelPtr, 16986d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar llvm::PointerType::getUnqual(SelectorTy)); 1699e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 170087935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall (*iter).second->replaceAllUsesWith(SelPtr); 170187935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall (*iter).second->eraseFromParent(); 170220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 170320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of classes defined. 17041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantInt::get(llvm::Type::getInt16Ty(VMContext), 170520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size())); 170620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of categories defined 17071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantInt::get(llvm::Type::getInt16Ty(VMContext), 170820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Categories.size())); 170920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an array of classes, then categories, then static object instances 171020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.insert(Classes.end(), Categories.begin(), Categories.end()); 171120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // NULL-terminated list of static object instances (mainly constant strings) 171220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(Statics); 171320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(NULLPtr); 17147db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *ClassList = llvm::ConstantArray::get(ClassListTy, Classes); 171520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassList); 17161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Construct the symbol table 171720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SymTab= MakeGlobal(SymTabTy, Elements); 171820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 171920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The symbol table is contained in a module which has some version-checking 172020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // constants 172147a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType * ModuleTy = llvm::StructType::get(VMContext, LongTy, LongTy, 172296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson PtrToInt8Ty, llvm::PointerType::getUnqual(SymTabTy), NULL); 172320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 172420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Runtime version used for compatibility checking. 17259cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 17261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantInt::get(LongTy, 1727d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NonFragileRuntimeVersion)); 17289cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } else { 17294a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, RuntimeVersion)); 17309cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 173191a0b51438e5259a79d68d7450c453827beed9e2Fariborz Jahanian // sizeof(ModuleTy) 173274a8bbf0654fbbf37be04b240b5bbe591f37f242Benjamin Kramer llvm::TargetData td(&TheModule); 17334a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, 1734a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson td.getTypeSizeInBits(ModuleTy)/8)); 173520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //FIXME: Should be the path to the file where this module was declared 173620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 173720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SymTab); 173820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *Module = MakeGlobal(ModuleTy, Elements); 173920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 174020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create the load function calling the runtime entry point with the module 174120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // structure 174220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function * LoadFunction = llvm::Function::Create( 17430032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), false), 174420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, ".objc_load_function", 174520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &TheModule); 17460032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::BasicBlock *EntryBB = 17470032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::BasicBlock::Create(VMContext, "entry", LoadFunction); 1748a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson CGBuilderTy Builder(VMContext); 174920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.SetInsertPoint(EntryBB); 175026c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 175126c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params(1, 175296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(ModuleTy)); 175396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::Value *Register = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 17540032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getVoidTy(VMContext), Params, true), "__objc_exec_class"); 175520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateCall(Register, Module); 175620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateRetVoid(); 17579cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 175820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return LoadFunction; 175920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 17607ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 1761679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanianllvm::Function *CGObjCGNU::GenerateMethod(const ObjCMethodDecl *OMD, 17621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCContainerDecl *CD) { 17631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCCategoryImplDecl *OCD = 17643e0a540b6d846178857289ec0eb8470a278d11a3Steve Naroff dyn_cast<ObjCCategoryImplDecl>(OMD->getDeclContext()); 1765077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner std::string CategoryName = OCD ? OCD->getNameAsString() : ""; 17664c8c8e93ca3b63de4d30f4a460b50fe63fd6bd3bDavid Chisnall std::string ClassName = CD->getName(); 1767077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner std::string MethodName = OMD->getSelector().getAsString(); 1768f8d49f64ef6ab7e632717a31631fc289aab69428Douglas Gregor bool isClassMethod = !OMD->isInstanceMethod(); 1769391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 1770541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar CodeGenTypes &Types = CGM.getTypes(); 17711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::FunctionType *MethodTy = 1772541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar Types.GetFunctionType(Types.getFunctionInfo(OMD), OMD->isVariadic()); 177320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::string FunctionName = SymbolNameForMethod(ClassName, CategoryName, 177420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodName, isClassMethod); 177520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1776d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar llvm::Function *Method 17771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump = llvm::Function::Create(MethodTy, 17781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalValue::InternalLinkage, 17791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump FunctionName, 17801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump &TheModule); 1781391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner return Method; 1782391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 1783391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 178449f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbarllvm::Function *CGObjCGNU::GetPropertyGetFunction() { 17851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<const llvm::Type*> Params; 17861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::Type *BoolTy = 17871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump CGM.getTypes().ConvertType(CGM.getContext().BoolTy); 17881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(IdTy); 17891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(SelectorTy); 17907f63cb098f2461643f71ea590c1a477603f27f63David Chisnall Params.push_back(IntTy); 17911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(BoolTy); 17927f63cb098f2461643f71ea590c1a477603f27f63David Chisnall // void objc_getProperty (id, SEL, int, bool) 17931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::FunctionType *FTy = 17941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::FunctionType::get(IdTy, Params, false); 17951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return cast<llvm::Function>(CGM.CreateRuntimeFunction(FTy, 17961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump "objc_getProperty")); 179749f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 179849f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 179949f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbarllvm::Function *CGObjCGNU::GetPropertySetFunction() { 18001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<const llvm::Type*> Params; 18011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::Type *BoolTy = 18021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump CGM.getTypes().ConvertType(CGM.getContext().BoolTy); 18031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(IdTy); 18041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(SelectorTy); 18057f63cb098f2461643f71ea590c1a477603f27f63David Chisnall Params.push_back(IntTy); 18061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(IdTy); 18071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(BoolTy); 18081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(BoolTy); 18097f63cb098f2461643f71ea590c1a477603f27f63David Chisnall // void objc_setProperty (id, SEL, int, id, bool, bool) 18101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::FunctionType *FTy = 18111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), Params, false); 18121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return cast<llvm::Function>(CGM.CreateRuntimeFunction(FTy, 18131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump "objc_setProperty")); 181449f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 181549f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 18166cc590602f41c3e98e8af0023d54296c8eca7910Fariborz Jahanian// FIXME. Implement this. 18176cc590602f41c3e98e8af0023d54296c8eca7910Fariborz Jahanianllvm::Function *CGObjCGNU::GetCopyStructFunction() { 18186cc590602f41c3e98e8af0023d54296c8eca7910Fariborz Jahanian return 0; 18196cc590602f41c3e98e8af0023d54296c8eca7910Fariborz Jahanian} 18206cc590602f41c3e98e8af0023d54296c8eca7910Fariborz Jahanian 1821309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbarllvm::Constant *CGObjCGNU::EnumerationMutationFunction() { 1822309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar CodeGen::CodeGenTypes &Types = CGM.getTypes(); 1823309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar ASTContext &Ctx = CGM.getContext(); 1824309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar // void objc_enumerationMutation (id) 1825ead608af31b6c9abeae1ca6d0b75094dac4641c0John McCall llvm::SmallVector<CanQualType,1> Params; 18260f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall Params.push_back(ASTIdTy); 1827309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar const llvm::FunctionType *FTy = 182804a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall Types.GetFunctionType(Types.getFunctionInfo(Ctx.VoidTy, Params, 1829264ba48dc98f3f843935a485d5b086f7e0fdc4f1Rafael Espindola FunctionType::ExtInfo()), false); 1830309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar return CGM.CreateRuntimeFunction(FTy, "objc_enumerationMutation"); 18312abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson} 18322abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson 1833bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanianvoid CGObjCGNU::EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF, 1834bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanian const Stmt &S) { 18355dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Pointer to the personality function 18365dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Constant *Personality = 18370032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get(llvm::Type::getInt32Ty(VMContext), 1838b59761b2530bf54926bf67de11956f3820ac38d9Chris Lattner true), 18395dc0867af17b3bd6f567897433853b2b4767446cChris Lattner "__gnu_objc_personality_v0"); 18403c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Personality = llvm::ConstantExpr::getBitCast(Personality, PtrTy); 18415dc0867af17b3bd6f567897433853b2b4767446cChris Lattner std::vector<const llvm::Type*> Params; 18425dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Params.push_back(PtrTy); 18435dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *RethrowFn = 18440032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), 184590665bd87f4ef7c230742e038cd0bad68e40fc78David Chisnall Params, false), "_Unwind_Resume"); 18465dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 18475dc0867af17b3bd6f567897433853b2b4767446cChris Lattner bool isTry = isa<ObjCAtTryStmt>(S); 18485dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *TryBlock = CGF.createBasicBlock("try"); 18495dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *PrevLandingPad = CGF.getInvokeDest(); 18505dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *TryHandler = CGF.createBasicBlock("try.handler"); 1851d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::BasicBlock *CatchInCatch = CGF.createBasicBlock("catch.rethrow"); 18525dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *FinallyBlock = CGF.createBasicBlock("finally"); 18535dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *FinallyRethrow = CGF.createBasicBlock("finally.throw"); 18545dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *FinallyEnd = CGF.createBasicBlock("finally.end"); 18555dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 18560faa51632584b8d56311d5792a2a275729bc67e3David Chisnall // @synchronized() 18575dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!isTry) { 1858d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner std::vector<const llvm::Type*> Args(1, IdTy); 1859d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::FunctionType *FTy = 18600032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), Args, false); 1861d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::Value *SyncEnter = CGM.CreateRuntimeFunction(FTy, "objc_sync_enter"); 18621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *SyncArg = 1863d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitScalarExpr(cast<ObjCAtSynchronizedStmt>(S).getSynchExpr()); 1864d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner SyncArg = CGF.Builder.CreateBitCast(SyncArg, IdTy); 1865d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(SyncEnter, SyncArg); 18665dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 18675dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1868d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner 18695dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Push an EH context entry, used for handling rethrows and jumps 18705dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // through finally. 18715dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.PushCleanupBlock(FinallyBlock); 18725dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 18735dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Emit the statements in the @try {} block 18745dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.setInvokeDest(TryHandler); 18755dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 18765dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(TryBlock); 18771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump CGF.EmitStmt(isTry ? cast<ObjCAtTryStmt>(S).getTryBody() 18785dc0867af17b3bd6f567897433853b2b4767446cChris Lattner : cast<ObjCAtSynchronizedStmt>(S).getSynchBody()); 18795dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 18805dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Jump to @finally if there is no exception 18815dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranchThroughCleanup(FinallyEnd); 18825dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 18835dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Emit the handlers 18845dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(TryHandler); 18855dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1886bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner // Get the correct versions of the exception handling intrinsics 18871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *llvm_eh_exception = 18885dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_exception); 1889790b20ed2cec72b4a79d1829ffc2c0339acbdec3Duncan Sands llvm::Value *llvm_eh_selector = 1890790b20ed2cec72b4a79d1829ffc2c0339acbdec3Duncan Sands CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_selector); 1891790b20ed2cec72b4a79d1829ffc2c0339acbdec3Duncan Sands llvm::Value *llvm_eh_typeid_for = 1892790b20ed2cec72b4a79d1829ffc2c0339acbdec3Duncan Sands CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_typeid_for); 18935dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 18945dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Exception object 18955dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *Exc = CGF.Builder.CreateCall(llvm_eh_exception, "exc"); 18965dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *RethrowPtr = CGF.CreateTempAlloca(Exc->getType(), "_rethrow"); 18975dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 18985dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::SmallVector<llvm::Value*, 8> ESelArgs; 1899c00d8e18ad3d903acfeb5d05163ce90713066a3fDouglas Gregor llvm::SmallVector<std::pair<const VarDecl*, const Stmt*>, 8> Handlers; 19005dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 19015dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(Exc); 19025dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(Personality); 19035dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 19045dc0867af17b3bd6f567897433853b2b4767446cChris Lattner bool HasCatchAll = false; 19055dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Only @try blocks are allowed @catch blocks, but both can have @finally 19065dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (isTry) { 19078f5e3dd32e443768d9dbbad7191e123e6733750cDouglas Gregor if (cast<ObjCAtTryStmt>(S).getNumCatchStmts()) { 19088f5e3dd32e443768d9dbbad7191e123e6733750cDouglas Gregor const ObjCAtTryStmt &AtTry = cast<ObjCAtTryStmt>(S); 1909d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.setInvokeDest(CatchInCatch); 19105dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 19118f5e3dd32e443768d9dbbad7191e123e6733750cDouglas Gregor for (unsigned I = 0, N = AtTry.getNumCatchStmts(); I != N; ++I) { 19128f5e3dd32e443768d9dbbad7191e123e6733750cDouglas Gregor const ObjCAtCatchStmt *CatchStmt = AtTry.getCatchStmt(I); 1913c00d8e18ad3d903acfeb5d05163ce90713066a3fDouglas Gregor const VarDecl *CatchDecl = CatchStmt->getCatchParamDecl(); 1914bb1c8600218b3244340331165fc7cba7bf227655Mike Stump Handlers.push_back(std::make_pair(CatchDecl, 1915bb1c8600218b3244340331165fc7cba7bf227655Mike Stump CatchStmt->getCatchBody())); 19165dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 19175dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @catch() and @catch(id) both catch any ObjC exception 191814108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff if (!CatchDecl || CatchDecl->getType()->isObjCIdType() 19195dc0867af17b3bd6f567897433853b2b4767446cChris Lattner || CatchDecl->getType()->isObjCQualifiedIdType()) { 19205dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Use i8* null here to signal this is a catch all, not a cleanup. 19215dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(NULLPtr); 19225dc0867af17b3bd6f567897433853b2b4767446cChris Lattner HasCatchAll = true; 19235dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // No further catches after this one will ever by reached 19245dc0867af17b3bd6f567897433853b2b4767446cChris Lattner break; 19251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 19265dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 19275dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // All other types should be Objective-C interface pointer types. 19281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCObjectPointerType *OPT = 1929183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall CatchDecl->getType()->getAs<ObjCObjectPointerType>(); 193014108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff assert(OPT && "Invalid @catch type."); 19311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCInterfaceType *IT = 1932183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall OPT->getPointeeType()->getAs<ObjCInterfaceType>(); 19335dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert(IT && "Invalid @catch type."); 1934bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *EHType = 1935bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner MakeConstantString(IT->getDecl()->getNameAsString()); 19365dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(EHType); 19375dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 19385dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 19395dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 19405dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 19415dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // We use a cleanup unless there was already a catch all. 19425dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!HasCatchAll) { 19430032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson ESelArgs.push_back(llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), 0)); 19445dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Handlers.push_back(std::make_pair((const ParmVarDecl*) 0, (const Stmt*) 0)); 19455dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 19465dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 19475dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Find which handler was matched. 1948bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *ESelector = CGF.Builder.CreateCall(llvm_eh_selector, 19495dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.begin(), ESelArgs.end(), "selector"); 19505dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 19515dc0867af17b3bd6f567897433853b2b4767446cChris Lattner for (unsigned i = 0, e = Handlers.size(); i != e; ++i) { 1952c00d8e18ad3d903acfeb5d05163ce90713066a3fDouglas Gregor const VarDecl *CatchParam = Handlers[i].first; 19535dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const Stmt *CatchBody = Handlers[i].second; 19545dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 19555dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *Next = 0; 19565dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 19575dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // The last handler always matches. 19585dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (i + 1 != e) { 19595dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert(CatchParam && "Only last handler can be a catch all."); 19605dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 19615dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Test whether this block matches the type for the selector and branch 19625dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // to Match if it does, or to the next BB if it doesn't. 19635dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *Match = CGF.createBasicBlock("match"); 19645dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Next = CGF.createBasicBlock("catch.next"); 1965bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *Id = CGF.Builder.CreateCall(llvm_eh_typeid_for, 19665dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateBitCast(ESelArgs[i+2], PtrTy)); 19675dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateCondBr(CGF.Builder.CreateICmpEQ(ESelector, Id), Match, 19685dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Next); 19695dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 19705dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Match); 19715dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 19721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19735dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (CatchBody) { 19745dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ExcObject = CGF.Builder.CreateBitCast(Exc, 19755dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.ConvertType(CatchParam->getType())); 19761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19775dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Bind the catch parameter if it exists. 19785dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (CatchParam) { 19795dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // CatchParam is a ParmVarDecl because of the grammar 19805dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // construction used to handle this, but for codegen purposes 19815dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // we treat this as a local decl. 19825dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitLocalBlockVarDecl(*CatchParam); 19835dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateStore(ExcObject, CGF.GetAddrOfLocalVar(CatchParam)); 19845dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 19855dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 19865dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.ObjCEHValueStack.push_back(ExcObject); 19875dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitStmt(CatchBody); 19885dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.ObjCEHValueStack.pop_back(); 19895dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 19905dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranchThroughCleanup(FinallyEnd); 19915dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 19925dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (Next) 19935dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Next); 19945dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 19955dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert(!Next && "catchup should be last handler."); 19965dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 19975dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateStore(Exc, RethrowPtr); 19985dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranchThroughCleanup(FinallyRethrow); 19995dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 20005dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 2001d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner // The @finally block is a secondary landing pad for any exceptions thrown in 2002d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner // @catch() blocks 2003d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitBlock(CatchInCatch); 2004d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner Exc = CGF.Builder.CreateCall(llvm_eh_exception, "exc"); 2005d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner ESelArgs.clear(); 2006d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner ESelArgs.push_back(Exc); 2007d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner ESelArgs.push_back(Personality); 20080faa51632584b8d56311d5792a2a275729bc67e3David Chisnall // If there is a @catch or @finally clause in outside of this one then we 20090faa51632584b8d56311d5792a2a275729bc67e3David Chisnall // need to make sure that we catch and rethrow it. 20100faa51632584b8d56311d5792a2a275729bc67e3David Chisnall if (PrevLandingPad) { 20110faa51632584b8d56311d5792a2a275729bc67e3David Chisnall ESelArgs.push_back(NULLPtr); 20120faa51632584b8d56311d5792a2a275729bc67e3David Chisnall } else { 20130faa51632584b8d56311d5792a2a275729bc67e3David Chisnall ESelArgs.push_back(llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), 0)); 20140faa51632584b8d56311d5792a2a275729bc67e3David Chisnall } 2015d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(llvm_eh_selector, ESelArgs.begin(), ESelArgs.end(), 2016d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner "selector"); 2017d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(llvm_eh_typeid_for, 2018d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateIntToPtr(ESelArgs[2], PtrTy)); 2019d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateStore(Exc, RethrowPtr); 2020d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitBranchThroughCleanup(FinallyRethrow); 2021d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner 20225dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CodeGenFunction::CleanupBlockInfo Info = CGF.PopCleanupBlock(); 20235dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 20245dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.setInvokeDest(PrevLandingPad); 20255dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 20265dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(FinallyBlock); 20275dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 2028d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner 20295dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (isTry) { 20301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (const ObjCAtFinallyStmt* FinallyStmt = 20315dc0867af17b3bd6f567897433853b2b4767446cChris Lattner cast<ObjCAtTryStmt>(S).getFinallyStmt()) 20325dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitStmt(FinallyStmt->getFinallyBody()); 20335dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 2034d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner // Emit 'objc_sync_exit(expr)' as finally's sole statement for 20355dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @synchronized. 2036d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner std::vector<const llvm::Type*> Args(1, IdTy); 2037d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::FunctionType *FTy = 20380032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), Args, false); 2039d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::Value *SyncExit = CGM.CreateRuntimeFunction(FTy, "objc_sync_exit"); 20401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *SyncArg = 2041d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitScalarExpr(cast<ObjCAtSynchronizedStmt>(S).getSynchExpr()); 2042d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner SyncArg = CGF.Builder.CreateBitCast(SyncArg, IdTy); 2043d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(SyncExit, SyncArg); 20445dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 20455dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 20465dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (Info.SwitchBlock) 20475dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Info.SwitchBlock); 20485dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (Info.EndBlock) 20495dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Info.EndBlock); 20505dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 20515dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Branch around the rethrow code. 20525dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranch(FinallyEnd); 20535dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 20545dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(FinallyRethrow); 20551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20560faa51632584b8d56311d5792a2a275729bc67e3David Chisnall llvm::Value *ExceptionObject = CGF.Builder.CreateLoad(RethrowPtr); 20570faa51632584b8d56311d5792a2a275729bc67e3David Chisnall llvm::BasicBlock *UnwindBB = CGF.getInvokeDest(); 20580faa51632584b8d56311d5792a2a275729bc67e3David Chisnall if (!UnwindBB) { 20590faa51632584b8d56311d5792a2a275729bc67e3David Chisnall CGF.Builder.CreateCall(RethrowFn, ExceptionObject); 20600faa51632584b8d56311d5792a2a275729bc67e3David Chisnall // Exception always thrown, next instruction is never reached. 20610faa51632584b8d56311d5792a2a275729bc67e3David Chisnall CGF.Builder.CreateUnreachable(); 20620faa51632584b8d56311d5792a2a275729bc67e3David Chisnall } else { 20630faa51632584b8d56311d5792a2a275729bc67e3David Chisnall // If there is a @catch block outside this scope, we invoke instead of 20640faa51632584b8d56311d5792a2a275729bc67e3David Chisnall // calling because we may return to this function. This is very slow, but 20650faa51632584b8d56311d5792a2a275729bc67e3David Chisnall // some people still do it. It would be nice to add an optimised path for 20660faa51632584b8d56311d5792a2a275729bc67e3David Chisnall // this. 20670faa51632584b8d56311d5792a2a275729bc67e3David Chisnall CGF.Builder.CreateInvoke(RethrowFn, UnwindBB, UnwindBB, &ExceptionObject, 20680faa51632584b8d56311d5792a2a275729bc67e3David Chisnall &ExceptionObject+1); 20690faa51632584b8d56311d5792a2a275729bc67e3David Chisnall } 20705dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 20710faa51632584b8d56311d5792a2a275729bc67e3David Chisnall CGF.EmitBlock(FinallyEnd); 207264d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 207364d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 207464d5d6c5903157c521af496479d06dc26032d718Anders Carlssonvoid CGObjCGNU::EmitThrowStmt(CodeGen::CodeGenFunction &CGF, 207549f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar const ObjCAtThrowStmt &S) { 20765dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ExceptionAsObject; 20775dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 20785dc0867af17b3bd6f567897433853b2b4767446cChris Lattner std::vector<const llvm::Type*> Args(1, IdTy); 20795dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::FunctionType *FTy = 20800032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), Args, false); 20811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *ThrowFn = 20825dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGM.CreateRuntimeFunction(FTy, "objc_exception_throw"); 20831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20845dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const Expr *ThrowExpr = S.getThrowExpr()) { 20855dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *Exception = CGF.EmitScalarExpr(ThrowExpr); 20861e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ExceptionAsObject = Exception; 20875dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 20881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((!CGF.ObjCEHValueStack.empty() && CGF.ObjCEHValueStack.back()) && 20895dc0867af17b3bd6f567897433853b2b4767446cChris Lattner "Unexpected rethrow outside @catch block."); 20905dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ExceptionAsObject = CGF.ObjCEHValueStack.back(); 20915dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 20921e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ExceptionAsObject = 20931e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian CGF.Builder.CreateBitCast(ExceptionAsObject, IdTy, "tmp"); 20941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20955dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Note: This may have to be an invoke, if we want to support constructs like: 20965dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @try { 20975dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @throw(obj); 20985dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // } 20995dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @catch(id) ... 21005dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // 21015dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // This is effectively turning @throw into an incredibly-expensive goto, but 21025dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // it may happen as a result of inlining followed by missed optimizations, or 21035dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // as a result of stupidity. 21045dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *UnwindBB = CGF.getInvokeDest(); 21055dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!UnwindBB) { 21065dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateCall(ThrowFn, ExceptionAsObject); 21075dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateUnreachable(); 21085dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 21095dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateInvoke(ThrowFn, UnwindBB, UnwindBB, &ExceptionAsObject, 21105dc0867af17b3bd6f567897433853b2b4767446cChris Lattner &ExceptionAsObject+1); 21115dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 21125dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Clear the insertion point to indicate we are in unreachable code. 21135dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.ClearInsertionPoint(); 211464d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 211564d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 21163e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanianllvm::Value * CGObjCGNU::EmitObjCWeakRead(CodeGen::CodeGenFunction &CGF, 21171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *AddrWeakObj) { 2118ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2119ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall AddrWeakObj = EnforceType(B, AddrWeakObj, IdTy); 2120ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return B.CreateCall(WeakReadFn, AddrWeakObj); 21216dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian} 21226dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian 21233e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanianvoid CGObjCGNU::EmitObjCWeakAssign(CodeGen::CodeGenFunction &CGF, 21241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *src, llvm::Value *dst) { 2125ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2126ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2127ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2128ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall2(WeakAssignFn, src, dst); 21293e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian} 21303e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian 213158626500527695865683d1d65053743de8770b60Fariborz Jahanianvoid CGObjCGNU::EmitObjCGlobalAssign(CodeGen::CodeGenFunction &CGF, 21321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *src, llvm::Value *dst) { 2133ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2134ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2135ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2136ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall2(GlobalAssignFn, src, dst); 213758626500527695865683d1d65053743de8770b60Fariborz Jahanian} 213858626500527695865683d1d65053743de8770b60Fariborz Jahanian 21397eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanianvoid CGObjCGNU::EmitObjCIvarAssign(CodeGen::CodeGenFunction &CGF, 21406c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *src, llvm::Value *dst, 21416c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *ivarOffset) { 2142ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2143ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2144ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2145ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall3(IvarAssignFn, src, dst, ivarOffset); 21467eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian} 21477eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian 214858626500527695865683d1d65053743de8770b60Fariborz Jahanianvoid CGObjCGNU::EmitObjCStrongCastAssign(CodeGen::CodeGenFunction &CGF, 21491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *src, llvm::Value *dst) { 2150ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2151ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2152ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2153ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall2(StrongCastAssignFn, src, dst); 215458626500527695865683d1d65053743de8770b60Fariborz Jahanian} 215558626500527695865683d1d65053743de8770b60Fariborz Jahanian 2156082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanianvoid CGObjCGNU::EmitGCMemmoveCollectable(CodeGen::CodeGenFunction &CGF, 21571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *DestPtr, 2158082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *SrcPtr, 215908c321380fff07d476a19daab6d29522c046cd49Fariborz Jahanian QualType Ty) { 2160ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2161ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall DestPtr = EnforceType(B, DestPtr, IdTy); 2162ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall SrcPtr = EnforceType(B, SrcPtr, PtrToIdTy); 2163ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 2164ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall std::pair<uint64_t, unsigned> TypeInfo = CGM.getContext().getTypeInfo(Ty); 2165ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall unsigned long size = TypeInfo.first/8; 2166ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // FIXME: size_t 2167ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall llvm::Value *N = llvm::ConstantInt::get(LongTy, size); 2168ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 2169ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall3(MemMoveFn, DestPtr, SrcPtr, N); 2170082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian} 2171082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian 21729cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianllvm::GlobalVariable *CGObjCGNU::ObjCIvarOffsetVariable( 21739cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *ID, 21749cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar) { 21759cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const std::string Name = "__objc_ivar_offset_" + ID->getNameAsString() 21769cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian + '.' + Ivar->getNameAsString(); 21779cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Emit the variable and initialize it with what we think the correct value 21789cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // is. This allows code compiled with non-fragile ivars to work correctly 21799cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // when linked against code which isn't (most of the time). 21808a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *IvarOffsetPointer = TheModule.getNamedGlobal(Name); 21818a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (!IvarOffsetPointer) { 2182d901da531433254210a08e8b1f9e1ad049b340aaDavid Chisnall uint64_t Offset; 2183d901da531433254210a08e8b1f9e1ad049b340aaDavid Chisnall if (ObjCImplementationDecl *OID = 2184cb421fa690da545b58a720abe5f1c49b166dbde7Dan Gohman CGM.getContext().getObjCImplementation( 2185cb421fa690da545b58a720abe5f1c49b166dbde7Dan Gohman const_cast<ObjCInterfaceDecl *>(ID))) 2186d901da531433254210a08e8b1f9e1ad049b340aaDavid Chisnall Offset = ComputeIvarBaseOffset(CGM, OID, Ivar); 2187d901da531433254210a08e8b1f9e1ad049b340aaDavid Chisnall else 2188d901da531433254210a08e8b1f9e1ad049b340aaDavid Chisnall Offset = ComputeIvarBaseOffset(CGM, ID, Ivar); 2189d901da531433254210a08e8b1f9e1ad049b340aaDavid Chisnall 21909cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::ConstantInt *OffsetGuess = 2191f950837b8250c7f08d0b7b15ace0b35740721c9dDavid Chisnall llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), Offset, "ivar"); 21928a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Don't emit the guess in non-PIC code because the linker will not be able 21938a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // to replace it with the real version for a library. In non-PIC code you 21948a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // must compile with the fragile ABI if you want to use ivars from a 21951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // GCC-compiled class. 21968a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (CGM.getLangOptions().PICLevel) { 21978a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *IvarOffsetGV = new llvm::GlobalVariable(TheModule, 21988a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Type::getInt32Ty(VMContext), false, 21998a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalValue::PrivateLinkage, OffsetGuess, Name+".guess"); 22008a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetPointer = new llvm::GlobalVariable(TheModule, 22018a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetGV->getType(), false, llvm::GlobalValue::LinkOnceAnyLinkage, 22028a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetGV, Name); 22038a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } else { 22048a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetPointer = new llvm::GlobalVariable(TheModule, 22053c0ef8cc0dc246bd3083e8cdd63005e8873d36d2Benjamin Kramer llvm::Type::getInt32PtrTy(VMContext), false, 22063c0ef8cc0dc246bd3083e8cdd63005e8873d36d2Benjamin Kramer llvm::GlobalValue::ExternalLinkage, 0, Name); 22078a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 22089cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 22098a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall return IvarOffsetPointer; 22109cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 22119cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 2212598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz JahanianLValue CGObjCGNU::EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF, 2213598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 2214598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 2215598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 2216598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers) { 2217183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall const ObjCInterfaceDecl *ID = ObjectTy->getAs<ObjCInterfaceType>()->getDecl(); 22189777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar return EmitValueForIvarAtOffset(CGF, ID, BaseValue, Ivar, CVRQualifiers, 22199777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar EmitIvarOffset(CGF, ID, Ivar)); 22200bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian} 2221bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 22229cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianstatic const ObjCInterfaceDecl *FindIvarInterface(ASTContext &Context, 22239cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *OID, 22249cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *OIVD) { 22259cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::SmallVector<ObjCIvarDecl*, 16> Ivars; 22268e6ac1d80055fa37b9b84029c7e751624ba7f84cFariborz Jahanian Context.ShallowCollectObjCIvars(OID, Ivars); 22279cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian for (unsigned k = 0, e = Ivars.size(); k != e; ++k) { 22289cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (OIVD == Ivars[k]) 22299cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return OID; 22309cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 22311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 22329cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Otherwise check in the super class. 22339cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (const ObjCInterfaceDecl *Super = OID->getSuperClass()) 22349cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return FindIvarInterface(Context, Super, OIVD); 22351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 22369cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return 0; 22379cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 22380bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian 2239f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanianllvm::Value *CGObjCGNU::EmitIvarOffset(CodeGen::CodeGenFunction &CGF, 22402a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 2241f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar) { 22428a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (CGM.getLangOptions().ObjCNonFragileABI) { 22439cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Interface = FindIvarInterface(CGM.getContext(), Interface, Ivar); 22448a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall return CGF.Builder.CreateLoad(CGF.Builder.CreateLoad( 22458a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ObjCIvarOffsetVariable(Interface, Ivar), false, "ivar")); 22469cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 22479777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar uint64_t Offset = ComputeIvarBaseOffset(CGF.CGM, Interface, Ivar); 22484a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson return llvm::ConstantInt::get(LongTy, Offset, "ivar"); 2249f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian} 2250f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian 2251bb1c8600218b3244340331165fc7cba7bf227655Mike StumpCodeGen::CGObjCRuntime * 2252bb1c8600218b3244340331165fc7cba7bf227655Mike StumpCodeGen::CreateGNUObjCRuntime(CodeGen::CodeGenModule &CGM) { 2253dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner return new CGObjCGNU(CGM); 22540f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 2255