CGObjCGNU.cpp revision e0d987626cc11317b36d6d3cc148c9a9d4b35850
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" 20f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall#include "CGException.h" 215dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 22dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner#include "clang/AST/ASTContext.h" 23e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar#include "clang/AST/Decl.h" 24af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar#include "clang/AST/DeclObjC.h" 2519cc4abea06a9b49e0e16a50d335c064cd723572Anders Carlsson#include "clang/AST/RecordLayout.h" 2616f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/AST/StmtObjC.h" 275dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 285dc0867af17b3bd6f567897433853b2b4767446cChris Lattner#include "llvm/Intrinsics.h" 290f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "llvm/Module.h" 30c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall#include "llvm/LLVMContext.h" 310f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "llvm/ADT/SmallVector.h" 3220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov#include "llvm/ADT/StringMap.h" 337ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar#include "llvm/Support/Compiler.h" 347ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar#include "llvm/Target/TargetData.h" 355dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 3620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov#include <map> 37e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 38e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 39dce1406f1c1f572cfd61c494546572d63461c741Chris Lattnerusing namespace clang; 4046f45b9bec4a265ad8400a538e5ec3a5683617f1Daniel Dunbarusing namespace CodeGen; 4120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovusing llvm::dyn_cast; 4220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 4320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// The version of the runtime that this class targets. Must match the version 4420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// in the runtime. 4520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic const int RuntimeVersion = 8; 469cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianstatic const int NonFragileRuntimeVersion = 9; 4720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic const int ProtocolVersion = 2; 48d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianstatic const int NonFragileProtocolVersion = 3; 490f984268b05edab2cc555a427c441baa9c252658Chris Lattner 500f984268b05edab2cc555a427c441baa9c252658Chris Lattnernamespace { 51dce1406f1c1f572cfd61c494546572d63461c741Chris Lattnerclass CGObjCGNU : public CodeGen::CGObjCRuntime { 520f984268b05edab2cc555a427c441baa9c252658Chris Lattnerprivate: 53dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner CodeGen::CodeGenModule &CGM; 540f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Module &TheModule; 55e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *SelectorTy; 56d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const llvm::IntegerType *Int8Ty; 57e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *PtrToInt8Ty; 58b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const llvm::FunctionType *IMPTy; 59e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *IdTy; 60ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall const llvm::PointerType *PtrToIdTy; 61ead608af31b6c9abeae1ca6d0b75094dac4641c0John McCall CanQualType ASTIdTy; 62e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::IntegerType *IntTy; 63e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *PtrTy; 64e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::IntegerType *LongTy; 65e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *PtrToIntTy; 665efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *ClassPtrAlias; 675efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *MetaClassPtrAlias; 6820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Classes; 6920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Categories; 7020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> ConstantStrings; 7148272a078e54d501cb05edd797c54b8e82ceb520David Chisnall llvm::StringMap<llvm::Constant*> ObjCStrings; 7220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function *LoadFunction; 7320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StringMap<llvm::Constant*> ExistingProtocols; 7420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov typedef std::pair<std::string, std::string> TypedSelector; 7520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::map<TypedSelector, llvm::GlobalAlias*> TypedSelectors; 7620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StringMap<llvm::GlobalAlias*> UntypedSelectors; 77ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // Selectors that we don't emit in GC mode 78ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Selector RetainSel, ReleaseSel, AutoreleaseSel; 79ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // Functions used for GC. 80ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall llvm::Constant *IvarAssignFn, *StrongCastAssignFn, *MemMoveFn, *WeakReadFn, 81ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall *WeakAssignFn, *GlobalAssignFn; 8220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Some zeros used for GEPs in lots of places. 8320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Zeros[2]; 8420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *NULLPtr; 85a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson llvm::LLVMContext &VMContext; 86c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall /// Metadata kind used to tie method lookups to message sends. 87c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall unsigned msgSendMDKind; 8820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovprivate: 8920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateIvarList( 9020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 9120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 9220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets); 9320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateMethodList(const std::string &ClassName, 9420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const std::string &CategoryName, 951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::SmallVectorImpl<Selector> &MethodSels, 961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes, 9720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList); 98f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *GenerateEmptyProtocol(const std::string &ProtocolName); 99d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *GeneratePropertyList(const ObjCImplementationDecl *OID, 100d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVectorImpl<Selector> &InstanceMethodSels, 101d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVectorImpl<llvm::Constant*> &InstanceMethodTypes); 10220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolList( 10320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols); 104d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // To ensure that all protocols are seen by the runtime, we add a category on 105d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // a class defined in the runtime, declaring no methods, but adopting the 106d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // protocols. 107d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian void GenerateProtocolHolderCategory(void); 10820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateClassStructure( 10920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 11020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 11120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 112d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 11320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 11420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 11520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 11620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 117d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Protocols, 118d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *IvarOffsets, 1198c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall llvm::Constant *Properties, 1208c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall bool isMeta=false); 12120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolMethodList( 12220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames, 12320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes); 12420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeConstantString(const std::string &Str, const std::string 12520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &Name=""); 126d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *ExportUniqueString(const std::string &Str, const std::string 127d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian prefix); 12820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeGlobal(const llvm::StructType *Ty, 12974a8bbf0654fbbf37be04b240b5bbe591f37f242Benjamin Kramer std::vector<llvm::Constant*> &V, llvm::StringRef Name="", 13041d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall llvm::GlobalValue::LinkageTypes linkage=llvm::GlobalValue::InternalLinkage); 13120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeGlobal(const llvm::ArrayType *Ty, 13274a8bbf0654fbbf37be04b240b5bbe591f37f242Benjamin Kramer std::vector<llvm::Constant*> &V, llvm::StringRef Name="", 13341d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall llvm::GlobalValue::LinkageTypes linkage=llvm::GlobalValue::InternalLinkage); 1349cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::GlobalVariable *ObjCIvarOffsetVariable(const ObjCInterfaceDecl *ID, 1359cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar); 1362a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner void EmitClassRef(const std::string &className); 137ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall llvm::Value* EnforceType(CGBuilderTy B, llvm::Value *V, const llvm::Type *Ty){ 138ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (V->getType() == Ty) return V; 139ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return B.CreateBitCast(V, Ty); 140ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1410f984268b05edab2cc555a427c441baa9c252658Chris Lattnerpublic: 142dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner CGObjCGNU(CodeGen::CodeGenModule &cgm); 1430d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall virtual llvm::Constant *GenerateConstantString(const StringLiteral *); 1441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump virtual CodeGen::RValue 1458f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar GenerateMessageSend(CodeGen::CodeGenFunction &CGF, 146ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 1477f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 1487f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 149f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 150df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 151c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall const ObjCInterfaceDecl *Class, 152df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method); 1531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump virtual CodeGen::RValue 1548f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar GenerateMessageSendSuper(CodeGen::CodeGenFunction &CGF, 155ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 1567f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 1577f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 158f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 1597ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 160f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 16119cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 162d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const CallArgList &CallArgs, 163d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const ObjCMethodDecl *Method); 16445d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GetClass(CGBuilderTy &Builder, 165ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar const ObjCInterfaceDecl *OID); 16603b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanian virtual llvm::Value *GetSelector(CGBuilderTy &Builder, Selector Sel, 16703b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanian bool lval = false); 1686d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar virtual llvm::Value *GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 1696d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar *Method); 1705a180397870944548aaadeaebf58e415885b9489John McCall virtual llvm::Constant *GetEHType(QualType T); 1711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump virtual llvm::Function *GenerateMethod(const ObjCMethodDecl *OMD, 173679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian const ObjCContainerDecl *CD); 1747ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateCategory(const ObjCCategoryImplDecl *CMD); 1757ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateClass(const ObjCImplementationDecl *ClassDecl); 17645d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GenerateProtocolRef(CGBuilderTy &Builder, 177af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD); 178af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar virtual void GenerateProtocol(const ObjCProtocolDecl *PD); 17920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual llvm::Function *ModuleInitFunction(); 18049f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar virtual llvm::Function *GetPropertyGetFunction(); 18149f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar virtual llvm::Function *GetPropertySetFunction(); 1826cc590602f41c3e98e8af0023d54296c8eca7910Fariborz Jahanian virtual llvm::Function *GetCopyStructFunction(); 183309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar virtual llvm::Constant *EnumerationMutationFunction(); 1841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 185f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall virtual void EmitTryStmt(CodeGen::CodeGenFunction &CGF, 186f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtTryStmt &S); 187f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall virtual void EmitSynchronizedStmt(CodeGen::CodeGenFunction &CGF, 188f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtSynchronizedStmt &S); 18964d5d6c5903157c521af496479d06dc26032d718Anders Carlsson virtual void EmitThrowStmt(CodeGen::CodeGenFunction &CGF, 19064d5d6c5903157c521af496479d06dc26032d718Anders Carlsson const ObjCAtThrowStmt &S); 1913e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian virtual llvm::Value * EmitObjCWeakRead(CodeGen::CodeGenFunction &CGF, 1926dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian llvm::Value *AddrWeakObj); 1933e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian virtual void EmitObjCWeakAssign(CodeGen::CodeGenFunction &CGF, 1943e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian llvm::Value *src, llvm::Value *dst); 19558626500527695865683d1d65053743de8770b60Fariborz Jahanian virtual void EmitObjCGlobalAssign(CodeGen::CodeGenFunction &CGF, 196021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian llvm::Value *src, llvm::Value *dest, 197021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian bool threadlocal=false); 1987eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian virtual void EmitObjCIvarAssign(CodeGen::CodeGenFunction &CGF, 1996c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *src, llvm::Value *dest, 2006c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *ivarOffset); 20158626500527695865683d1d65053743de8770b60Fariborz Jahanian virtual void EmitObjCStrongCastAssign(CodeGen::CodeGenFunction &CGF, 20258626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dest); 203082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian virtual void EmitGCMemmoveCollectable(CodeGen::CodeGenFunction &CGF, 2041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *DestPtr, 205082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *SrcPtr, 20655bcace250e1ff366e4482714b344b8cbc8be5f3Fariborz Jahanian llvm::Value *Size); 207598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian virtual LValue EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF, 208598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 209598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 210598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 211598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers); 212f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian virtual llvm::Value *EmitIvarOffset(CodeGen::CodeGenFunction &CGF, 2132a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 214f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar); 21589ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian virtual llvm::Constant *GCBlockLayout(CodeGen::CodeGenFunction &CGF, 216c5904b40c3d76b612fb09c6d2717f646a0af6670Fariborz Jahanian const llvm::SmallVectorImpl<const Expr *> &) { 21789ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian return NULLPtr; 21889ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian } 2190f984268b05edab2cc555a427c441baa9c252658Chris Lattner}; 2200f984268b05edab2cc555a427c441baa9c252658Chris Lattner} // end anonymous namespace 2210f984268b05edab2cc555a427c441baa9c252658Chris Lattner 22220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 2232a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// Emits a reference to a dummy variable which is emitted with each class. 2242a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// This ensures that a linker error will be generated when trying to link 2252a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// together modules where a referenced class is not defined. 226bb1c8600218b3244340331165fc7cba7bf227655Mike Stumpvoid CGObjCGNU::EmitClassRef(const std::string &className) { 2272a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner std::string symbolRef = "__objc_class_ref_" + className; 2282a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // Don't emit two copies of the same symbol 229bb1c8600218b3244340331165fc7cba7bf227655Mike Stump if (TheModule.getGlobalVariable(symbolRef)) 230bb1c8600218b3244340331165fc7cba7bf227655Mike Stump return; 2312a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner std::string symbolName = "__objc_class_name_" + className; 2322a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner llvm::GlobalVariable *ClassSymbol = TheModule.getGlobalVariable(symbolName); 2332a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (!ClassSymbol) { 2341c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson ClassSymbol = new llvm::GlobalVariable(TheModule, LongTy, false, 2351c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::GlobalValue::ExternalLinkage, 0, symbolName); 2362a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 2371c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, ClassSymbol->getType(), true, 238f35271b8677a5f31498b89587b1da42a06dd46fdChris Lattner llvm::GlobalValue::WeakAnyLinkage, ClassSymbol, symbolRef); 2392a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner} 24020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 241d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianstatic std::string SymbolNameForMethod(const std::string &ClassName, const 242d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string &CategoryName, const std::string &MethodName, bool isClassMethod) 243d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian{ 244d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall std::string MethodNameColonStripped = MethodName; 245d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall std::replace(MethodNameColonStripped.begin(), MethodNameColonStripped.end(), 246d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall ':', '_'); 247d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall return std::string(isClassMethod ? "_c_" : "_i_") + ClassName + "_" + 248d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall CategoryName + "_" + MethodNameColonStripped; 24920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 25087935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnallstatic std::string MangleSelectorTypes(const std::string &TypeString) { 25187935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall std::string Mangled = TypeString; 25222b8827d340d2993639c2ec53e9d2b4e4d876bebDavid Chisnall // Simple mangling to avoid breaking when we mix JIT / static code. 25322b8827d340d2993639c2ec53e9d2b4e4d876bebDavid Chisnall // Not part of the ABI, subject to change without notice. 25487935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall std::replace(Mangled.begin(), Mangled.end(), '@', '_'); 25522b8827d340d2993639c2ec53e9d2b4e4d876bebDavid Chisnall std::replace(Mangled.begin(), Mangled.end(), ':', 'J'); 25622b8827d340d2993639c2ec53e9d2b4e4d876bebDavid Chisnall std::replace(Mangled.begin(), Mangled.end(), '*', 'e'); 25722b8827d340d2993639c2ec53e9d2b4e4d876bebDavid Chisnall std::replace(Mangled.begin(), Mangled.end(), '#', 'E'); 25822b8827d340d2993639c2ec53e9d2b4e4d876bebDavid Chisnall std::replace(Mangled.begin(), Mangled.end(), ':', 'j'); 25922b8827d340d2993639c2ec53e9d2b4e4d876bebDavid Chisnall std::replace(Mangled.begin(), Mangled.end(), '(', 'g'); 26022b8827d340d2993639c2ec53e9d2b4e4d876bebDavid Chisnall std::replace(Mangled.begin(), Mangled.end(), ')', 'G'); 26122b8827d340d2993639c2ec53e9d2b4e4d876bebDavid Chisnall std::replace(Mangled.begin(), Mangled.end(), '[', 'h'); 26222b8827d340d2993639c2ec53e9d2b4e4d876bebDavid Chisnall std::replace(Mangled.begin(), Mangled.end(), ']', 'H'); 26387935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall return Mangled; 26487935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall} 26520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 266dce1406f1c1f572cfd61c494546572d63461c741Chris LattnerCGObjCGNU::CGObjCGNU(CodeGen::CodeGenModule &cgm) 2675efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar : CGM(cgm), TheModule(CGM.getModule()), ClassPtrAlias(0), 268a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson MetaClassPtrAlias(0), VMContext(cgm.getLLVMContext()) { 269c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall 270c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall msgSendMDKind = VMContext.getMDKindID("GNUObjCMessageSend"); 271c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall 272e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner IntTy = cast<llvm::IntegerType>( 273e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner CGM.getTypes().ConvertType(CGM.getContext().IntTy)); 274e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner LongTy = cast<llvm::IntegerType>( 275e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner CGM.getTypes().ConvertType(CGM.getContext().LongTy)); 2761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 277d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Int8Ty = llvm::Type::getInt8Ty(VMContext); 278d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // C string type. Used in lots of places. 279d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty = llvm::PointerType::getUnqual(Int8Ty); 280d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 2814a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Zeros[0] = llvm::ConstantInt::get(LongTy, 0); 28220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros[1] = Zeros[0]; 283d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NULLPtr = llvm::ConstantPointerNull::get(PtrToInt8Ty); 284391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Get the selector Type. 2850d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall QualType selTy = CGM.getContext().getObjCSelType(); 2860d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall if (QualType() == selTy) { 2870d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall SelectorTy = PtrToInt8Ty; 2880d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } else { 2890d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall SelectorTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(selTy)); 2900d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } 291e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 29296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson PtrToIntTy = llvm::PointerType::getUnqual(IntTy); 293391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrTy = PtrToInt8Ty; 2941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 295391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Object type 296ead608af31b6c9abeae1ca6d0b75094dac4641c0John McCall ASTIdTy = CGM.getContext().getCanonicalType(CGM.getContext().getObjCIdType()); 2970d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall if (QualType() == ASTIdTy) { 2980d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall IdTy = PtrToInt8Ty; 2990d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } else { 3000d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall IdTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(ASTIdTy)); 3010d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } 302ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall PtrToIdTy = llvm::PointerType::getUnqual(IdTy); 3031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 304391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // IMP type 305391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner std::vector<const llvm::Type*> IMPArgs; 306391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IMPArgs.push_back(IdTy); 307391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IMPArgs.push_back(SelectorTy); 30896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson IMPTy = llvm::FunctionType::get(IdTy, IMPArgs, true); 309ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 310ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (CGM.getLangOptions().getGCMode() != LangOptions::NonGC) { 311ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // Get selectors needed in GC mode 312ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall RetainSel = GetNullarySelector("retain", CGM.getContext()); 313ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall ReleaseSel = GetNullarySelector("release", CGM.getContext()); 314ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall AutoreleaseSel = GetNullarySelector("autorelease", CGM.getContext()); 315ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 316ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // Get functions needed in GC mode 317ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 318ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_ivar(id, id, ptrdiff_t); 319ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall std::vector<const llvm::Type*> Args(1, IdTy); 320ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Args.push_back(PtrToIdTy); 321ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // FIXME: ptrdiff_t 322ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Args.push_back(LongTy); 323ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall llvm::FunctionType *FTy = llvm::FunctionType::get(IdTy, Args, false); 324ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall IvarAssignFn = CGM.CreateRuntimeFunction(FTy, "objc_assign_ivar"); 325ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_strongCast (id, id*) 326ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Args.pop_back(); 327ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall FTy = llvm::FunctionType::get(IdTy, Args, false); 328ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall StrongCastAssignFn = 329ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGM.CreateRuntimeFunction(FTy, "objc_assign_strongCast"); 330ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_global(id, id*); 331ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall FTy = llvm::FunctionType::get(IdTy, Args, false); 332ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall GlobalAssignFn = CGM.CreateRuntimeFunction(FTy, "objc_assign_global"); 333ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_weak(id, id*); 334ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall FTy = llvm::FunctionType::get(IdTy, Args, false); 335ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall WeakAssignFn = CGM.CreateRuntimeFunction(FTy, "objc_assign_weak"); 336ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_read_weak(id*); 337ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Args.clear(); 338ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Args.push_back(PtrToIdTy); 339ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall FTy = llvm::FunctionType::get(IdTy, Args, false); 340ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall WeakReadFn = CGM.CreateRuntimeFunction(FTy, "objc_read_weak"); 341ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // void *objc_memmove_collectable(void*, void *, size_t); 342ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Args.clear(); 343ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Args.push_back(PtrToInt8Ty); 344ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Args.push_back(PtrToInt8Ty); 345ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // FIXME: size_t 346ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Args.push_back(LongTy); 347ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall FTy = llvm::FunctionType::get(IdTy, Args, false); 348ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall MemMoveFn = CGM.CreateRuntimeFunction(FTy, "objc_memmove_collectable"); 349ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 35020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 351bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 35220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// This has to perform the lookup every time, since posing and related 35320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// techniques can modify the name -> class mapping. 35445d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbarllvm::Value *CGObjCGNU::GetClass(CGBuilderTy &Builder, 355ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar const ObjCInterfaceDecl *OID) { 356d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner llvm::Value *ClassName = CGM.GetAddrOfConstantCString(OID->getNameAsString()); 35741d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // With the incompatible ABI, this will need to be replaced with a direct 35841d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // reference to the class symbol. For the compatible nonfragile ABI we are 35941d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // still performing this lookup at run time but emitting the symbol for the 36041d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // class externally so that we can make the switch later. 3612a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner EmitClassRef(OID->getNameAsString()); 362ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar ClassName = Builder.CreateStructGEP(ClassName, 0); 363ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar 36426c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params(1, PtrToInt8Ty); 36520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassLookupFn = 36696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, 36726c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params, 36826c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian true), 36926c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_lookup_class"); 37020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return Builder.CreateCall(ClassLookupFn, ClassName); 371391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 372391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 37303b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanianllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, Selector Sel, 37403b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanian bool lval) { 375077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner llvm::GlobalAlias *&US = UntypedSelectors[Sel.getAsString()]; 3768e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner if (US == 0) 3776d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar US = new llvm::GlobalAlias(llvm::PointerType::getUnqual(SelectorTy), 3780f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall llvm::GlobalValue::PrivateLinkage, 3790f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall ".objc_untyped_selector_alias"+Sel.getAsString(), 3808e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner NULL, &TheModule); 38103b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanian if (lval) 38203b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanian return US; 3836d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar return Builder.CreateLoad(US); 384df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian} 385df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 3866d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbarllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 387df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian *Method) { 388df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 389df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian std::string SelName = Method->getSelector().getAsString(); 390df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian std::string SelTypes; 391df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian CGM.getContext().getObjCEncodingForMethodDecl(Method, SelTypes); 392df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian // Typed selectors 393df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian TypedSelector Selector = TypedSelector(SelName, 394df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian SelTypes); 395df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 396df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian // If it's already cached, return it. 397bb1c8600218b3244340331165fc7cba7bf227655Mike Stump if (TypedSelectors[Selector]) { 3986d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar return Builder.CreateLoad(TypedSelectors[Selector]); 399df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian } 400df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 401df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian // If it isn't, cache it. 402df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::GlobalAlias *Sel = new llvm::GlobalAlias( 4036d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar llvm::PointerType::getUnqual(SelectorTy), 4040f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall llvm::GlobalValue::PrivateLinkage, ".objc_selector_alias" + SelName, 405df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian NULL, &TheModule); 406df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian TypedSelectors[Selector] = Sel; 407df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 4086d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar return Builder.CreateLoad(Sel); 4098e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner} 4108e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 4115a180397870944548aaadeaebf58e415885b9489John McCallllvm::Constant *CGObjCGNU::GetEHType(QualType T) { 4125a180397870944548aaadeaebf58e415885b9489John McCall llvm_unreachable("asking for catch type for ObjC type in GNU runtime"); 4135a180397870944548aaadeaebf58e415885b9489John McCall return 0; 4145a180397870944548aaadeaebf58e415885b9489John McCall} 4155a180397870944548aaadeaebf58e415885b9489John McCall 4165e7dcc62e4637591959f9c372f6c5258d0d263e0Chris Lattnerllvm::Constant *CGObjCGNU::MakeConstantString(const std::string &Str, 4175e7dcc62e4637591959f9c372f6c5258d0d263e0Chris Lattner const std::string &Name) { 4188a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *ConstStr = CGM.GetAddrOfConstantCString(Str, Name.c_str()); 4193c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros, 2); 42020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 421d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianllvm::Constant *CGObjCGNU::ExportUniqueString(const std::string &Str, 422d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const std::string prefix) { 423d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string name = prefix + Str; 424d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *ConstStr = TheModule.getGlobalVariable(name); 425d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (!ConstStr) { 426d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *value = llvm::ConstantArray::get(VMContext, Str, true); 427d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ConstStr = new llvm::GlobalVariable(TheModule, value->getType(), true, 428d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::LinkOnceODRLinkage, value, prefix + Str); 429d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 430d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros, 2); 431d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian} 432bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 43320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::MakeGlobal(const llvm::StructType *Ty, 43474a8bbf0654fbbf37be04b240b5bbe591f37f242Benjamin Kramer std::vector<llvm::Constant*> &V, llvm::StringRef Name, 43541d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall llvm::GlobalValue::LinkageTypes linkage) { 43608e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson llvm::Constant *C = llvm::ConstantStruct::get(Ty, V); 4371c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson return new llvm::GlobalVariable(TheModule, Ty, false, 4381c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::GlobalValue::InternalLinkage, C, Name); 43920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 440bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 44120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::MakeGlobal(const llvm::ArrayType *Ty, 44274a8bbf0654fbbf37be04b240b5bbe591f37f242Benjamin Kramer std::vector<llvm::Constant*> &V, llvm::StringRef Name, 44341d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall llvm::GlobalValue::LinkageTypes linkage) { 4447db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *C = llvm::ConstantArray::get(Ty, V); 4451c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson return new llvm::GlobalVariable(TheModule, Ty, false, 446bb1c8600218b3244340331165fc7cba7bf227655Mike Stump llvm::GlobalValue::InternalLinkage, C, Name); 44720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 44820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 44920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate an NSConstantString object. 4500d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnallllvm::Constant *CGObjCGNU::GenerateConstantString(const StringLiteral *SL) { 45148272a078e54d501cb05edd797c54b8e82ceb520David Chisnall 4522f4eaef37476ae6891ede8ba215d0f6fd093629bBenjamin Kramer std::string Str = SL->getString().str(); 4530d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall 45448272a078e54d501cb05edd797c54b8e82ceb520David Chisnall // Look for an existing one 45548272a078e54d501cb05edd797c54b8e82ceb520David Chisnall llvm::StringMap<llvm::Constant*>::iterator old = ObjCStrings.find(Str); 45648272a078e54d501cb05edd797c54b8e82ceb520David Chisnall if (old != ObjCStrings.end()) 45748272a078e54d501cb05edd797c54b8e82ceb520David Chisnall return old->getValue(); 45848272a078e54d501cb05edd797c54b8e82ceb520David Chisnall 45920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 46020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars.push_back(NULLPtr); 46113fd7e5111032f54b538dd66d035b0ccc1f82467Chris Lattner Ivars.push_back(MakeConstantString(Str)); 4624a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Ivars.push_back(llvm::ConstantInt::get(IntTy, Str.size())); 46320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ObjCStr = MakeGlobal( 46447a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType::get(VMContext, PtrToInt8Ty, PtrToInt8Ty, IntTy, NULL), 46520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars, ".objc_str"); 46648272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ObjCStr = llvm::ConstantExpr::getBitCast(ObjCStr, PtrToInt8Ty); 46748272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ObjCStrings[Str] = ObjCStr; 46848272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ConstantStrings.push_back(ObjCStr); 46920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return ObjCStr; 47020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 47120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 47220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///Generates a message send where the super is the receiver. This is a message 47320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///send to self with special delivery semantics indicating which class's method 47420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///should be called. 4758f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCodeGen::RValue 4768f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCGObjCGNU::GenerateMessageSendSuper(CodeGen::CodeGenFunction &CGF, 477ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 4787f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 4797f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 480f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 4817ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 482f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 48319cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 484d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const CallArgList &CallArgs, 485d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const ObjCMethodDecl *Method) { 486ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (CGM.getLangOptions().getGCMode() != LangOptions::NonGC) { 487ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == RetainSel || Sel == AutoreleaseSel) { 488ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return RValue::get(Receiver); 489ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 490ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == ReleaseSel) { 491ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return RValue::get(0); 492ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 493ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 494db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 495db831948f32217ece8410099f9982ef900c3b3c3David Chisnall CGBuilderTy &Builder = CGF.Builder; 496db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::Value *cmd = GetSelector(Builder, Sel); 497db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 498b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 499b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CallArgList ActualArgs; 500b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 501b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back( 502db831948f32217ece8410099f9982ef900c3b3c3David Chisnall std::make_pair(RValue::get(Builder.CreateBitCast(Receiver, IdTy)), 5030f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall ASTIdTy)); 504b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back(std::make_pair(RValue::get(cmd), 505b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGF.getContext().getObjCSelType())); 506b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.insert(ActualArgs.end(), CallArgs.begin(), CallArgs.end()); 507b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 508b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CodeGenTypes &Types = CGM.getTypes(); 50904a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall const CGFunctionInfo &FnInfo = Types.getFunctionInfo(ResultType, ActualArgs, 510264ba48dc98f3f843935a485d5b086f7e0fdc4f1Rafael Espindola FunctionType::ExtInfo()); 5116793966aa221764f579cc8436bd641e1ec339c6dDaniel Dunbar const llvm::FunctionType *impType = 5126793966aa221764f579cc8436bd641e1ec339c6dDaniel Dunbar Types.GetFunctionType(FnInfo, Method ? Method->isVariadic() : false); 513b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 5145efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::Value *ReceiverClass = 0; 51548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (isCategoryImpl) { 51648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::Constant *classLookupFunction = 0; 51748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner std::vector<const llvm::Type*> Params; 51848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Params.push_back(PtrTy); 51948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 52096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 52148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner IdTy, Params, true), "objc_get_meta_class"); 52248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 52396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 52448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner IdTy, Params, true), "objc_get_class"); 5255efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 526db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateCall(classLookupFunction, 52748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MakeConstantString(Class->getNameAsString())); 5285efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } else { 52948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // Set up global aliases for the metaclass or class pointer if they do not 53048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // already exist. These will are forward-references which will be set to 531bb1c8600218b3244340331165fc7cba7bf227655Mike Stump // pointers to the class and metaclass structure created for the runtime 532bb1c8600218b3244340331165fc7cba7bf227655Mike Stump // load function. To send a message to super, we look up the value of the 53348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // super_class pointer from either the class or metaclass structure. 53448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 53548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!MetaClassPtrAlias) { 53648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MetaClassPtrAlias = new llvm::GlobalAlias(IdTy, 53748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_metaclass_ref" + 53848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 53948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 54048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = MetaClassPtrAlias; 54148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 54248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!ClassPtrAlias) { 54348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ClassPtrAlias = new llvm::GlobalAlias(IdTy, 54448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_class_ref" + 54548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 54648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 54748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = ClassPtrAlias; 5485efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 54971238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 5505efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Cast the pointer to a simplified version of the class structure 551db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateBitCast(ReceiverClass, 55296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual( 55347a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType::get(VMContext, IdTy, IdTy, NULL))); 5545efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Get the superclass pointer 555db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateStructGEP(ReceiverClass, 1); 5565efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Load the superclass pointer 557db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateLoad(ReceiverClass); 55820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Construct the structure used to look up the IMP 55947a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCSuperTy = llvm::StructType::get(VMContext, 56047a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson Receiver->getType(), IdTy, NULL); 561db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::Value *ObjCSuper = Builder.CreateAlloca(ObjCSuperTy); 562b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 563db831948f32217ece8410099f9982ef900c3b3c3David Chisnall Builder.CreateStore(Receiver, Builder.CreateStructGEP(ObjCSuper, 0)); 564db831948f32217ece8410099f9982ef900c3b3c3David Chisnall Builder.CreateStore(ReceiverClass, Builder.CreateStructGEP(ObjCSuper, 1)); 56520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 56620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the IMP 56726c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params; 56896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson Params.push_back(llvm::PointerType::getUnqual(ObjCSuperTy)); 56926c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params.push_back(SelectorTy); 570db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 571db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::Value *lookupArgs[] = {ObjCSuper, cmd}; 572db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::Value *imp; 573db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 574db831948f32217ece8410099f9982ef900c3b3c3David Chisnall if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 575db831948f32217ece8410099f9982ef900c3b3c3David Chisnall // The lookup function returns a slot, which can be safely cached. 576db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::Type *SlotTy = llvm::StructType::get(VMContext, PtrTy, PtrTy, PtrTy, 577db831948f32217ece8410099f9982ef900c3b3c3David Chisnall IntTy, llvm::PointerType::getUnqual(impType), NULL); 578db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 579db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::Constant *lookupFunction = 580db831948f32217ece8410099f9982ef900c3b3c3David Chisnall CGM.CreateRuntimeFunction(llvm::FunctionType::get( 581db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::PointerType::getUnqual(SlotTy), Params, true), 582db831948f32217ece8410099f9982ef900c3b3c3David Chisnall "objc_slot_lookup_super"); 583db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 584db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::CallInst *slot = Builder.CreateCall(lookupFunction, lookupArgs, 585db831948f32217ece8410099f9982ef900c3b3c3David Chisnall lookupArgs+2); 586db831948f32217ece8410099f9982ef900c3b3c3David Chisnall slot->setOnlyReadsMemory(); 587db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 588db831948f32217ece8410099f9982ef900c3b3c3David Chisnall imp = Builder.CreateLoad(Builder.CreateStructGEP(slot, 4)); 589db831948f32217ece8410099f9982ef900c3b3c3David Chisnall } else { 5901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Constant *lookupFunction = 59196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get( 59296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(impType), Params, true), 59326c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_msg_lookup_super"); 594db831948f32217ece8410099f9982ef900c3b3c3David Chisnall imp = Builder.CreateCall(lookupFunction, lookupArgs, lookupArgs+2); 595db831948f32217ece8410099f9982ef900c3b3c3David Chisnall } 59620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 597dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::Value *impMD[] = { 598dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::MDString::get(VMContext, Sel.getAsString()), 599dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::MDString::get(VMContext, Class->getSuperClass()->getNameAsString()), 600dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::ConstantInt::get(llvm::Type::getInt1Ty(VMContext), IsClassMessage) 601dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall }; 602dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::MDNode *node = llvm::MDNode::get(VMContext, impMD, 3); 603dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall 6044b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall llvm::Instruction *call; 605ef072fd2f3347cfd857d6eb787b245b950771430John McCall RValue msgRet = CGF.EmitCall(FnInfo, imp, Return, ActualArgs, 6064b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall 0, &call); 6074b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall call->setMetadata(msgSendMDKind, node); 6084b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall return msgRet; 60920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 61020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 6111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// Generate code for a message send expression. 6128f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCodeGen::RValue 6138f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCGObjCGNU::GenerateMessageSend(CodeGen::CodeGenFunction &CGF, 614ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 6157f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 6167f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 617f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 618df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 619c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall const ObjCInterfaceDecl *Class, 620df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method) { 621664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // Strip out message sends to retain / release in GC mode 622ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (CGM.getLangOptions().getGCMode() != LangOptions::NonGC) { 623ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == RetainSel || Sel == AutoreleaseSel) { 624ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return RValue::get(Receiver); 625ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 626ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == ReleaseSel) { 627ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return RValue::get(0); 628ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 629ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 630664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 631d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian CGBuilderTy &Builder = CGF.Builder; 632664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 633664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // If the return type is something that goes in an integer register, the 634664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // runtime will handle 0 returns. For other cases, we fill in the 0 value 635664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // ourselves. 636664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // 637664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // The language spec says the result of this kind of message send is 638664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // undefined, but lots of people seem to have forgotten to read that 639664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // paragraph and insist on sending messages to nil that have structure 640664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // returns. With GCC, this generates a random return value (whatever happens 641664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // to be on the stack / in those registers at the time) on most platforms, 642664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // and generates a SegV on SPARC. With LLVM it corrupts the stack. 643664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall bool isPointerSizedReturn = false; 6449d3347a5887d2d25afe8b0bd35783a72ec86cce2Douglas Gregor if (ResultType->isAnyPointerType() || 6459d3347a5887d2d25afe8b0bd35783a72ec86cce2Douglas Gregor ResultType->isIntegralOrEnumerationType() || ResultType->isVoidType()) 646664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall isPointerSizedReturn = true; 647664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 648664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::BasicBlock *startBB = 0; 649664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::BasicBlock *messageBB = 0; 650a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall llvm::BasicBlock *continueBB = 0; 651664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 652664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall if (!isPointerSizedReturn) { 653664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall startBB = Builder.GetInsertBlock(); 654664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall messageBB = CGF.createBasicBlock("msgSend"); 655a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall continueBB = CGF.createBasicBlock("continue"); 656664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 657664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Value *isNil = Builder.CreateICmpEQ(Receiver, 658664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Constant::getNullValue(Receiver->getType())); 659a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall Builder.CreateCondBr(isNil, continueBB, messageBB); 660664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall CGF.EmitBlock(messageBB); 661664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } 662664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 6630f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall IdTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(ASTIdTy)); 664df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::Value *cmd; 665df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian if (Method) 666d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian cmd = GetSelector(Builder, Method); 667df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian else 668d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian cmd = GetSelector(Builder, Sel); 669b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CallArgList ActualArgs; 670b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 671d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Receiver = Builder.CreateBitCast(Receiver, IdTy); 672b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back( 673d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::make_pair(RValue::get(Receiver), ASTIdTy)); 674b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back(std::make_pair(RValue::get(cmd), 675b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGF.getContext().getObjCSelType())); 676b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.insert(ActualArgs.end(), CallArgs.begin(), CallArgs.end()); 677b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 678b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CodeGenTypes &Types = CGM.getTypes(); 67904a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall const CGFunctionInfo &FnInfo = Types.getFunctionInfo(ResultType, ActualArgs, 680264ba48dc98f3f843935a485d5b086f7e0fdc4f1Rafael Espindola FunctionType::ExtInfo()); 6816793966aa221764f579cc8436bd641e1ec339c6dDaniel Dunbar const llvm::FunctionType *impType = 6826793966aa221764f579cc8436bd641e1ec339c6dDaniel Dunbar Types.GetFunctionType(FnInfo, Method ? Method->isVariadic() : false); 6830f984268b05edab2cc555a427c441baa9c252658Chris Lattner 68463e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall llvm::Value *impMD[] = { 68563e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall llvm::MDString::get(VMContext, Sel.getAsString()), 68663e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall llvm::MDString::get(VMContext, Class ? Class->getNameAsString() :""), 68763e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall llvm::ConstantInt::get(llvm::Type::getInt1Ty(VMContext), Class!=0) 68863e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall }; 68963e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall llvm::MDNode *node = llvm::MDNode::get(VMContext, impMD, 3); 69063e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall 69163e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall 69234e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian llvm::Value *imp; 69334e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian // For sender-aware dispatch, we pass the sender as the third argument to a 69434e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian // lookup function. When sending messages from C code, the sender is nil. 695d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // objc_msg_lookup_sender(id *receiver, SEL selector, id sender); 696d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 697d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 698d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<const llvm::Type*> Params; 699d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Value *ReceiverPtr = CGF.CreateTempAlloca(Receiver->getType()); 700d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Builder.CreateStore(Receiver, ReceiverPtr); 701d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Params.push_back(ReceiverPtr->getType()); 702d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Params.push_back(SelectorTy); 70334e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian llvm::Value *self; 70434e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian 705f69ea958964ab0452299f1df68ce469b67d18d3aDavid Chisnall if (isa<ObjCMethodDecl>(CGF.CurCodeDecl)) { 70634e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian self = CGF.LoadObjCSelf(); 70734e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } else { 70803e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson self = llvm::ConstantPointerNull::get(IdTy); 70934e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } 710d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 71134e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian Params.push_back(self->getType()); 712d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 713d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // The lookup function returns a slot, which can be safely cached. 714d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Type *SlotTy = llvm::StructType::get(VMContext, PtrTy, PtrTy, PtrTy, 715d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IntTy, llvm::PointerType::getUnqual(impType), NULL); 7161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Constant *lookupFunction = 71796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get( 718d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::PointerType::getUnqual(SlotTy), Params, true), 71934e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian "objc_msg_lookup_sender"); 72026c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 721d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // The lookup function is guaranteed not to capture the receiver pointer. 722d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (llvm::Function *LookupFn = dyn_cast<llvm::Function>(lookupFunction)) { 723d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian LookupFn->setDoesNotCapture(1); 724d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 725d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 726866163bf6c66211a9b4d5ba160ac02de04ce4be6David Chisnall llvm::CallInst *slot = 727d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Builder.CreateCall3(lookupFunction, ReceiverPtr, cmd, self); 728866163bf6c66211a9b4d5ba160ac02de04ce4be6David Chisnall slot->setOnlyReadsMemory(); 72963e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall slot->setMetadata(msgSendMDKind, node); 730866163bf6c66211a9b4d5ba160ac02de04ce4be6David Chisnall 731d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian imp = Builder.CreateLoad(Builder.CreateStructGEP(slot, 4)); 732c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall 733d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // The lookup function may have changed the receiver, so make sure we use 734d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // the new one. 73541d0c7a2355c1a47b33f5e528c5f815ca5b52e9eDavid Chisnall ActualArgs[0] = std::make_pair(RValue::get( 73641d0c7a2355c1a47b33f5e528c5f815ca5b52e9eDavid Chisnall Builder.CreateLoad(ReceiverPtr, true)), ASTIdTy); 73734e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } else { 738d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<const llvm::Type*> Params; 739d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Params.push_back(Receiver->getType()); 740d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Params.push_back(SelectorTy); 7411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Constant *lookupFunction = 74296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get( 74396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(impType), Params, true), 74434e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian "objc_msg_lookup"); 74534e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian 746d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian imp = Builder.CreateCall2(lookupFunction, Receiver, cmd); 74763e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall cast<llvm::CallInst>(imp)->setMetadata(msgSendMDKind, node); 74834e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } 7494b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall llvm::Instruction *call; 750ef072fd2f3347cfd857d6eb787b245b950771430John McCall RValue msgRet = CGF.EmitCall(FnInfo, imp, Return, ActualArgs, 7514b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall 0, &call); 7524b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall call->setMetadata(msgSendMDKind, node); 753664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 754a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall 755664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall if (!isPointerSizedReturn) { 756a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall messageBB = CGF.Builder.GetInsertBlock(); 757a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall CGF.Builder.CreateBr(continueBB); 758a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall CGF.EmitBlock(continueBB); 759664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall if (msgRet.isScalar()) { 760664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Value *v = msgRet.getScalarVal(); 761664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::PHINode *phi = Builder.CreatePHI(v->getType()); 762664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(v, messageBB); 763664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(llvm::Constant::getNullValue(v->getType()), startBB); 764664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall msgRet = RValue::get(phi); 765664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } else if (msgRet.isAggregate()) { 766664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Value *v = msgRet.getAggregateAddr(); 767664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::PHINode *phi = Builder.CreatePHI(v->getType()); 768664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall const llvm::PointerType *RetTy = cast<llvm::PointerType>(v->getType()); 769866163bf6c66211a9b4d5ba160ac02de04ce4be6David Chisnall llvm::AllocaInst *NullVal = 770866163bf6c66211a9b4d5ba160ac02de04ce4be6David Chisnall CGF.CreateTempAlloca(RetTy->getElementType(), "null"); 771664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall CGF.InitTempAlloca(NullVal, 772664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Constant::getNullValue(RetTy->getElementType())); 773664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(v, messageBB); 774664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(NullVal, startBB); 775664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall msgRet = RValue::getAggregate(phi); 776664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } else /* isComplex() */ { 777664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall std::pair<llvm::Value*,llvm::Value*> v = msgRet.getComplexVal(); 778664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::PHINode *phi = Builder.CreatePHI(v.first->getType()); 779664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(v.first, messageBB); 780664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(llvm::Constant::getNullValue(v.first->getType()), 781664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall startBB); 782664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::PHINode *phi2 = Builder.CreatePHI(v.second->getType()); 783664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi2->addIncoming(v.second, messageBB); 784664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi2->addIncoming(llvm::Constant::getNullValue(v.second->getType()), 785664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall startBB); 786664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall msgRet = RValue::getComplex(phi, phi2); 787664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } 788664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } 789664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall return msgRet; 79020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 79120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 7921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// Generates a MethodList. Used in construction of a objc_class and 79320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// objc_category structures. 79420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateMethodList(const std::string &ClassName, 7951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const std::string &CategoryName, 7961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::SmallVectorImpl<Selector> &MethodSels, 7971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes, 79820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList) { 7990f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall if (MethodSels.empty()) 8000f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall return NULLPtr; 8011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 80247a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCMethodTy = llvm::StructType::get(VMContext, 80320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime creates it us. 80420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Method types 80596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(IMPTy), //Method pointer 80620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 80720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 80820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 80920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size(); i < e; ++i) { 81020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 8111e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian if (llvm::Constant *Method = 81220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov TheModule.getFunction(SymbolNameForMethod(ClassName, CategoryName, 813077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner MethodSels[i].getAsString(), 8141e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian isClassMethodList))) { 8158a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *C = MakeConstantString(MethodSels[i].getAsString()); 8168a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(C); 8178a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MethodTypes[i]); 8183c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Method = llvm::ConstantExpr::getBitCast(Method, 81996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(IMPTy)); 8201e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Elements.push_back(Method); 82108e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Methods.push_back(llvm::ConstantStruct::get(ObjCMethodTy, Elements)); 8221e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian } 82320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 82420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 82520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 82696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodTy, 8271e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Methods.size()); 8287db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *MethodArray = llvm::ConstantArray::get(ObjCMethodArrayTy, 829fba676396703e87a5034e5f308aa30a633468f66Chris Lattner Methods); 83020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 83120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing list pointer, array and array count 83220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<const llvm::Type*, 16> ObjCMethodListFields; 8338c8f69ec1477424e11faef6b235505584d61e522Owen Anderson llvm::PATypeHolder OpaqueNextTy = llvm::OpaqueType::get(VMContext); 83496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::Type *NextPtrTy = llvm::PointerType::getUnqual(OpaqueNextTy); 83547a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCMethodListTy = llvm::StructType::get(VMContext, 8361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NextPtrTy, 8371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump IntTy, 83820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodArrayTy, 83920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 84020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Refine next pointer type to concrete type 84120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::cast<llvm::OpaqueType>( 84220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov OpaqueNextTy.get())->refineAbstractTypeTo(ObjCMethodListTy); 84320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodListTy = llvm::cast<llvm::StructType>(OpaqueNextTy.get()); 84420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 84520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 84603e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson Methods.push_back(llvm::ConstantPointerNull::get( 84796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(ObjCMethodListTy))); 8480032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson Methods.push_back(llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), 84920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodTypes.size())); 85020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(MethodArray); 8511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 85220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 85320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodListTy, Methods, ".objc_method_list"); 85420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 85520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 85620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generates an IvarList. Used in construction of a objc_class. 85720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateIvarList( 85820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 85920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 86020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets) { 8611804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall if (IvarNames.size() == 0) 8621804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall return NULLPtr; 8631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 86447a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCIvarTy = llvm::StructType::get(VMContext, 86520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 86620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 86720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, 86820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 86920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 87020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 87120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = IvarNames.size() ; i < e ; i++) { 87220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 8738a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(IvarNames[i]); 8748a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(IvarTypes[i]); 87520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IvarOffsets[i]); 87608e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Ivars.push_back(llvm::ConstantStruct::get(ObjCIvarTy, Elements)); 87720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 87820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 87920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 88096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCIvarArrayTy = llvm::ArrayType::get(ObjCIvarTy, 88120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarNames.size()); 88220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 8831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 88420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 8854a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(IntTy, (int)IvarNames.size())); 8867db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson Elements.push_back(llvm::ConstantArray::get(ObjCIvarArrayTy, Ivars)); 88720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing array and array count 88847a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCIvarListTy = llvm::StructType::get(VMContext, IntTy, 88920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCIvarArrayTy, 89020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 89120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 89220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 89320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCIvarListTy, Elements, ".objc_ivar_list"); 8940f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 8950f984268b05edab2cc555a427c441baa9c252658Chris Lattner 89620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate a class structure 89720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateClassStructure( 89820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 89920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 90020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 901d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 90220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 90320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 90420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 90520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 906d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Protocols, 907d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *IvarOffsets, 9088c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall llvm::Constant *Properties, 9098c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall bool isMeta) { 91020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Set up the class structure 91120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Note: Several of these are char*s when they should be ids. This is 91220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // because the runtime performs this translation on load. 913d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // 914d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Fields marked New ABI are part of the GNUstep runtime. We emit them 915d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // anyway; the classes will still work with the GNU runtime, they will just 916d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // be ignored. 91747a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ClassTy = llvm::StructType::get(VMContext, 91820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // class_pointer 91920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // super_class 92020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // name 92120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // version 92220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // info 92320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // instance_size 92420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IVars->getType(), // ivars 92520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods->getType(), // methods 9261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // These are all filled in by the runtime, so we pretend 92720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // dtable 92820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // subclass_list 92920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // sibling_class 93020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // protocols 93120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // gc_object_type 932d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // New ABI: 933d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian LongTy, // abi_version 934d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IvarOffsets->getType(), // ivar_offsets 935d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties->getType(), // properties 93620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 9374a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::Constant *Zero = llvm::ConstantInt::get(LongTy, 0); 93820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Fill in the structure 93920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 9403c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(MetaClass, PtrToInt8Ty)); 94120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SuperClass); 942d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner Elements.push_back(MakeConstantString(Name, ".class_name")); 94320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Zero); 9444a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, info)); 94520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceSize); 94620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IVars); 94720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Methods); 948d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 949d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 950d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 9513c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(Protocols, PtrTy)); 952d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 953d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(Zero); 954d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(IvarOffsets); 955d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(Properties); 95620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 95741d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // This is now an externally visible symbol, so that we can speed up class 95841d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // messages in the next ABI. 9598c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall return MakeGlobal(ClassTy, Elements, (isMeta ? "_OBJC_METACLASS_": 9608c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall "_OBJC_CLASS_") + std::string(Name), llvm::GlobalValue::ExternalLinkage); 96120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 96220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 96320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateProtocolMethodList( 96420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames, 96520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes) { 9661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 96747a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCMethodDescTy = llvm::StructType::get(VMContext, 96820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime does the casting for us. 96920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 97020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 97120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 97220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 97320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size() ; i < e ; i++) { 97420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 9751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(MethodNames[i]); 9768a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MethodTypes[i]); 97708e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Methods.push_back(llvm::ConstantStruct::get(ObjCMethodDescTy, Elements)); 97820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 97996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodDescTy, 98020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodNames.size()); 9817db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *Array = llvm::ConstantArray::get(ObjCMethodArrayTy, 982bb1c8600218b3244340331165fc7cba7bf227655Mike Stump Methods); 98347a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCMethodDescListTy = llvm::StructType::get(VMContext, 98420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, ObjCMethodArrayTy, NULL); 98520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 9864a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Methods.push_back(llvm::ConstantInt::get(IntTy, MethodNames.size())); 98720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(Array); 98820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodDescListTy, Methods, ".objc_method_list"); 98920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 990bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 99120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// Create the protocol list structure used in classes, categories and so on 99220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateProtocolList( 99320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols) { 99496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 99520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Protocols.size()); 99647a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ProtocolListTy = llvm::StructType::get(VMContext, 99720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, //Should be a recurisve pointer, but it's always NULL here. 99820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy,//FIXME: Should be size_t 99920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolArrayTy, 100020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 10011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 100220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (const std::string *iter = Protocols.begin(), *endIter = Protocols.end(); 100320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != endIter ; iter++) { 1004ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall llvm::Constant *protocol = 0; 1005ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall llvm::StringMap<llvm::Constant*>::iterator value = 1006ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall ExistingProtocols.find(*iter); 1007ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall if (value == ExistingProtocols.end()) { 1008f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian protocol = GenerateEmptyProtocol(*iter); 1009ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall } else { 1010ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall protocol = value->getValue(); 1011ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall } 10123c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::Constant *Ptr = llvm::ConstantExpr::getBitCast(protocol, 1013a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson PtrToInt8Ty); 101420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Ptr); 101520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 10167db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 101720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements); 101820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 101920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 10204a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, Protocols.size())); 102120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolArray); 102220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ProtocolListTy, Elements, ".objc_protocol_list"); 102320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 102420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 10251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpllvm::Value *CGObjCGNU::GenerateProtocolRef(CGBuilderTy &Builder, 1026af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD) { 1027f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Value *protocol = ExistingProtocols[PD->getNameAsString()]; 10281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::Type *T = 1029f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian CGM.getTypes().ConvertType(CGM.getContext().getObjCProtoType()); 103096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson return Builder.CreateBitCast(protocol, llvm::PointerType::getUnqual(T)); 1031f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian} 1032f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 1033f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanianllvm::Constant *CGObjCGNU::GenerateEmptyProtocol( 1034f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian const std::string &ProtocolName) { 1035f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::SmallVector<std::string, 0> EmptyStringVector; 1036f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 0> EmptyConstantVector; 1037f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 1038f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *ProtocolList = GenerateProtocolList(EmptyStringVector); 1039d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *MethodList = 1040f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian GenerateProtocolMethodList(EmptyConstantVector, EmptyConstantVector); 1041f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // Protocols are objects containing lists of the methods implemented and 1042f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // protocols adopted. 104347a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ProtocolTy = llvm::StructType::get(VMContext, IdTy, 1044f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian PtrToInt8Ty, 1045f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian ProtocolList->getType(), 1046d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1047d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1048d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1049d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1050f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian NULL); 10511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 1052f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // The isa pointer must be set to a magic number so the runtime knows it's 1053f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // the correct layout. 1054d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian int Version = CGM.getContext().getLangOptions().ObjCNonFragileABI ? 1055d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NonFragileProtocolVersion : ProtocolVersion; 10563c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getIntToPtr( 1057d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), Version), IdTy)); 1058f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 1059f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(ProtocolList); 1060d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1061d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1062d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1063d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1064f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian return MakeGlobal(ProtocolTy, Elements, ".objc_protocol"); 106520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 106620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1067af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbarvoid CGObjCGNU::GenerateProtocol(const ObjCProtocolDecl *PD) { 1068af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar ASTContext &Context = CGM.getContext(); 10698ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ProtocolName = PD->getNameAsString(); 1070af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 1071af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar for (ObjCProtocolDecl::protocol_iterator PI = PD->protocol_begin(), 1072af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar E = PD->protocol_end(); PI != E; ++PI) 1073d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*PI)->getNameAsString()); 1074af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodNames; 1075af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 1076d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 16> OptionalInstanceMethodNames; 1077d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 16> OptionalInstanceMethodTypes; 107817945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (ObjCProtocolDecl::instmeth_iterator iter = PD->instmeth_begin(), 107917945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis E = PD->instmeth_end(); iter != E; iter++) { 1080af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 1081af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl(*iter, TypeStr); 1082d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if ((*iter)->getImplementationControl() == ObjCMethodDecl::Optional) { 1083d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodNames.push_back( 1084d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1085d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 1086d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1087d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodNames.push_back( 1088d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1089d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 1090d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1091af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 1092af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar // Collect information about class methods: 1093af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodNames; 1094af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 1095d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 16> OptionalClassMethodNames; 1096d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 16> OptionalClassMethodTypes; 10971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCProtocolDecl::classmeth_iterator 109817945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = PD->classmeth_begin(), endIter = PD->classmeth_end(); 109917945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter != endIter ; iter++) { 1100af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 1101af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 1102d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if ((*iter)->getImplementationControl() == ObjCMethodDecl::Optional) { 1103d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassMethodNames.push_back( 1104d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1105d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 1106d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1107d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodNames.push_back( 1108d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1109d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodTypes.push_back(MakeConstantString(TypeStr)); 1110d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1111af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 111220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 111320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ProtocolList = GenerateProtocolList(Protocols); 111420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceMethodList = 111520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(InstanceMethodNames, InstanceMethodTypes); 111620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = 111720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(ClassMethodNames, ClassMethodTypes); 1118d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalInstanceMethodList = 1119d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolMethodList(OptionalInstanceMethodNames, 1120d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodTypes); 1121d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalClassMethodList = 1122d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolMethodList(OptionalClassMethodNames, 1123d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodTypes); 1124d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1125d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Property metadata: name, attributes, isSynthesized, setter name, setter 1126d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // types, getter name, getter types. 1127d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // The isSynthesized value is always set to 0 in a protocol. It exists to 1128d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // simplify the runtime library by allowing it to use the same data 1129d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // structures for protocol metadata everywhere. 1130d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::StructType *PropertyMetadataTy = llvm::StructType::get(VMContext, 1131d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, Int8Ty, Int8Ty, PtrToInt8Ty, PtrToInt8Ty, PtrToInt8Ty, 1132d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, NULL); 1133d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Properties; 1134d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> OptionalProperties; 1135d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1136d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all of the property methods need adding to the method list and to the 1137d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // property metadata list. 1138d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (ObjCContainerDecl::prop_iterator 1139d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter = PD->prop_begin(), endIter = PD->prop_end(); 1140d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1141d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Fields; 1142d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ObjCPropertyDecl *property = (*iter); 1143d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1144d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(property->getNameAsString())); 1145d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 1146d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian property->getPropertyAttributes())); 1147d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 0)); 1148d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *getter = property->getGetterMethodDecl()) { 1149d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1150d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(getter,TypeStr); 1151d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 1152d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(TypeEncoding); 1153d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(getter->getSelector().getAsString())); 1154d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1155d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1156d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1157d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1158d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1159d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *setter = property->getSetterMethodDecl()) { 1160d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1161d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(setter,TypeStr); 1162d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 1163d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(TypeEncoding); 1164d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(setter->getSelector().getAsString())); 1165d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1166d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1167d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1168d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1169d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1170d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (property->getPropertyImplementation() == ObjCPropertyDecl::Optional) { 1171d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalProperties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1172d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1173d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1174d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1175d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1176d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyArray = llvm::ConstantArray::get( 1177d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType::get(PropertyMetadataTy, Properties.size()), Properties); 1178d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* PropertyListInitFields[] = 1179d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian {llvm::ConstantInt::get(IntTy, Properties.size()), NULLPtr, PropertyArray}; 1180d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1181d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyListInit = 11820d36dd28bb40b08a93d7f64196794882eee08ee8Nick Lewycky llvm::ConstantStruct::get(VMContext, PropertyListInitFields, 3, false); 1183d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyList = new llvm::GlobalVariable(TheModule, 1184d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyListInit->getType(), false, llvm::GlobalValue::InternalLinkage, 1185d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyListInit, ".objc_property_list"); 1186d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1187d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyArray = 1188d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantArray::get(llvm::ArrayType::get(PropertyMetadataTy, 1189d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalProperties.size()) , OptionalProperties); 1190d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* OptionalPropertyListInitFields[] = { 1191d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantInt::get(IntTy, OptionalProperties.size()), NULLPtr, 1192d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyArray }; 1193d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1194d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyListInit = 11950d36dd28bb40b08a93d7f64196794882eee08ee8Nick Lewycky llvm::ConstantStruct::get(VMContext, OptionalPropertyListInitFields, 3, false); 1196d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyList = new llvm::GlobalVariable(TheModule, 1197d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyListInit->getType(), false, 1198d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::InternalLinkage, OptionalPropertyListInit, 1199d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ".objc_property_list"); 1200d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 120120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocols are objects containing lists of the methods implemented and 120220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // protocols adopted. 120347a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ProtocolTy = llvm::StructType::get(VMContext, IdTy, 120420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 120520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolList->getType(), 120620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov InstanceMethodList->getType(), 120720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ClassMethodList->getType(), 1208d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodList->getType(), 1209d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodList->getType(), 1210d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyList->getType(), 1211d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyList->getType(), 121220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 12131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 121420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The isa pointer must be set to a magic number so the runtime knows it's 121520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // the correct layout. 1216d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian int Version = CGM.getContext().getLangOptions().ObjCNonFragileABI ? 1217d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NonFragileProtocolVersion : ProtocolVersion; 12183c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getIntToPtr( 1219d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), Version), IdTy)); 122020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 122120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolList); 122220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceMethodList); 122320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassMethodList); 1224d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalInstanceMethodList); 1225d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalClassMethodList); 1226d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(PropertyList); 1227d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalPropertyList); 12281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ExistingProtocols[ProtocolName] = 12293c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolTy, Elements, 123020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_protocol"), IdTy); 123120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 1232d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianvoid CGObjCGNU::GenerateProtocolHolderCategory(void) { 1233d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Collect information about instance methods 1234d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<Selector, 1> MethodSels; 1235d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 1> MethodTypes; 1236d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1237d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Elements; 1238d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const std::string ClassName = "__ObjC_Protocol_Holder_Ugly_Hack"; 1239d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const std::string CategoryName = "AnotherHack"; 1240d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MakeConstantString(CategoryName)); 1241d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MakeConstantString(ClassName)); 1242d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Instance method list 1243d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1244d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassName, CategoryName, MethodSels, MethodTypes, false), PtrTy)); 1245d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Class method list 1246d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1247d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassName, CategoryName, MethodSels, MethodTypes, true), PtrTy)); 1248d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Protocol list 1249d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrTy, 1250d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.size()); 1251d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::StructType *ProtocolListTy = llvm::StructType::get(VMContext, 1252d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy, //Should be a recurisve pointer, but it's always NULL here. 1253d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian LongTy,//FIXME: Should be size_t 1254d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolArrayTy, 1255d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NULL); 1256d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> ProtocolElements; 1257d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (llvm::StringMapIterator<llvm::Constant*> iter = 1258d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.begin(), endIter = ExistingProtocols.end(); 1259d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1260d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Ptr = llvm::ConstantExpr::getBitCast(iter->getValue(), 1261d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy); 1262d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(Ptr); 1263d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1264d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 1265d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements); 1266d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.clear(); 1267d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(NULLPtr); 1268d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(llvm::ConstantInt::get(LongTy, 1269d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.size())); 1270d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(ProtocolArray); 1271d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolListTy, 1272d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements, ".objc_protocol_list"), PtrTy)); 1273d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Categories.push_back(llvm::ConstantExpr::getBitCast( 1274d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeGlobal(llvm::StructType::get(VMContext, PtrToInt8Ty, PtrToInt8Ty, 1275d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy, PtrTy, PtrTy, NULL), Elements), PtrTy)); 1276d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian} 127720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 12787ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateCategory(const ObjCCategoryImplDecl *OCD) { 12798ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = OCD->getClassInterface()->getNameAsString(); 12808ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string CategoryName = OCD->getNameAsString(); 12817ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 12827ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> InstanceMethodSels; 12837ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 1284653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCCategoryImplDecl::instmeth_iterator 128517945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->instmeth_begin(), endIter = OCD->instmeth_end(); 1286653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 12877ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 12887ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 12897ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 12908a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 12917ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 12927ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 12937ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 12947ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> ClassMethodSels; 12957ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 12961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCCategoryImplDecl::classmeth_iterator 129717945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->classmeth_begin(), endIter = OCD->classmeth_end(); 1298653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 12997ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 13007ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 13017ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 13028a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 13037ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 13047ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 13057ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 13067ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 1307ad9e06d82ae627e858e5bfe4a7f1f9337b5b0a15David Chisnall const ObjCCategoryDecl *CatDecl = OCD->getCategoryDecl(); 1308ad9e06d82ae627e858e5bfe4a7f1f9337b5b0a15David Chisnall const ObjCList<ObjCProtocolDecl> &Protos = CatDecl->getReferencedProtocols(); 13097ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCList<ObjCProtocolDecl>::iterator I = Protos.begin(), 13107ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar E = Protos.end(); I != E; ++I) 1311d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 13127ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 131320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 131420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(CategoryName)); 131520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ClassName)); 13161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Instance method list 13173c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1318a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, InstanceMethodSels, InstanceMethodTypes, 131920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov false), PtrTy)); 132020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Class method list 13213c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1322a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, ClassMethodSels, ClassMethodTypes, true), 132320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy)); 132420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocol list 13253c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast( 132620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolList(Protocols), PtrTy)); 13273c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Categories.push_back(llvm::ConstantExpr::getBitCast( 13281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump MakeGlobal(llvm::StructType::get(VMContext, PtrToInt8Ty, PtrToInt8Ty, 132947a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson PtrTy, PtrTy, PtrTy, NULL), Elements), PtrTy)); 133020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 13317ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 1332d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianllvm::Constant *CGObjCGNU::GeneratePropertyList(const ObjCImplementationDecl *OID, 1333d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVectorImpl<Selector> &InstanceMethodSels, 1334d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVectorImpl<llvm::Constant*> &InstanceMethodTypes) { 1335d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ASTContext &Context = CGM.getContext(); 1336d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // 1337d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Property metadata: name, attributes, isSynthesized, setter name, setter 1338d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // types, getter name, getter types. 1339d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::StructType *PropertyMetadataTy = llvm::StructType::get(VMContext, 1340d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, Int8Ty, Int8Ty, PtrToInt8Ty, PtrToInt8Ty, PtrToInt8Ty, 1341d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, NULL); 1342d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Properties; 1343d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1344d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1345d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all of the property methods need adding to the method list and to the 1346d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // property metadata list. 1347d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (ObjCImplDecl::propimpl_iterator 1348d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter = OID->propimpl_begin(), endIter = OID->propimpl_end(); 1349d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1350d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Fields; 1351d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ObjCPropertyDecl *property = (*iter)->getPropertyDecl(); 135242ba04a072c69d84a6660e4498215086662910acDavid Chisnall ObjCPropertyImplDecl *propertyImpl = *iter; 135342ba04a072c69d84a6660e4498215086662910acDavid Chisnall bool isSynthesized = (propertyImpl->getPropertyImplementation() == 135442ba04a072c69d84a6660e4498215086662910acDavid Chisnall ObjCPropertyImplDecl::Synthesize); 1355d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1356d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(property->getNameAsString())); 1357d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 1358d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian property->getPropertyAttributes())); 135942ba04a072c69d84a6660e4498215086662910acDavid Chisnall Fields.push_back(llvm::ConstantInt::get(Int8Ty, isSynthesized)); 1360d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *getter = property->getGetterMethodDecl()) { 1361d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1362d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(getter,TypeStr); 1363d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 136442ba04a072c69d84a6660e4498215086662910acDavid Chisnall if (isSynthesized) { 136542ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodTypes.push_back(TypeEncoding); 136642ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodSels.push_back(getter->getSelector()); 136742ba04a072c69d84a6660e4498215086662910acDavid Chisnall } 1368d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(getter->getSelector().getAsString())); 1369d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1370d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1371d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1372d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1373d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1374d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *setter = property->getSetterMethodDecl()) { 1375d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1376d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(setter,TypeStr); 1377d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 137842ba04a072c69d84a6660e4498215086662910acDavid Chisnall if (isSynthesized) { 137942ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodTypes.push_back(TypeEncoding); 138042ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodSels.push_back(setter->getSelector()); 138142ba04a072c69d84a6660e4498215086662910acDavid Chisnall } 1382d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(setter->getSelector().getAsString())); 1383d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1384d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1385d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1386d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1387d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1388d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1389d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1390d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType *PropertyArrayTy = 1391d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType::get(PropertyMetadataTy, Properties.size()); 1392d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyArray = llvm::ConstantArray::get(PropertyArrayTy, 1393d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties); 1394d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* PropertyListInitFields[] = 1395d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian {llvm::ConstantInt::get(IntTy, Properties.size()), NULLPtr, PropertyArray}; 1396d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1397d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyListInit = 13980d36dd28bb40b08a93d7f64196794882eee08ee8Nick Lewycky llvm::ConstantStruct::get(VMContext, PropertyListInitFields, 3, false); 1399d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian return new llvm::GlobalVariable(TheModule, PropertyListInit->getType(), false, 1400d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::InternalLinkage, PropertyListInit, 1401d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ".objc_property_list"); 1402d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian} 1403d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 14047ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateClass(const ObjCImplementationDecl *OID) { 14057ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ASTContext &Context = CGM.getContext(); 14067ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 14077ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the superclass name. 14081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCInterfaceDecl * SuperClassDecl = 14097ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar OID->getClassInterface()->getSuperClass(); 14108ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string SuperClassName; 14112a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (SuperClassDecl) { 14128ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner SuperClassName = SuperClassDecl->getNameAsString(); 14132a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner EmitClassRef(SuperClassName); 14142a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 14157ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 14167ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the class name 141709dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner ObjCInterfaceDecl *ClassDecl = 141809dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner const_cast<ObjCInterfaceDecl *>(OID->getClassInterface()); 14198ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = ClassDecl->getNameAsString(); 14202a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // Emit the symbol that is used to generate linker errors if this class is 14212a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // referenced in other modules but not declared. 1422c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian std::string classSymbolName = "__objc_class_name_" + ClassName; 14231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (llvm::GlobalVariable *symbol = 1424c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian TheModule.getGlobalVariable(classSymbolName)) { 14254a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson symbol->setInitializer(llvm::ConstantInt::get(LongTy, 0)); 1426c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } else { 14271c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, LongTy, false, 14284a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::GlobalValue::ExternalLinkage, llvm::ConstantInt::get(LongTy, 0), 14291c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson classSymbolName); 1430c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } 14311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14322bebbf0acee55404de4b8846713b64429e744e8fDaniel Dunbar // Get the size of instances. 14332bebbf0acee55404de4b8846713b64429e744e8fDaniel Dunbar int instanceSize = Context.getASTObjCImplementationLayout(OID).getSize() / 8; 14347ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 14357ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance variables. 14367ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarNames; 14377ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarTypes; 14387ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarOffsets; 14391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1440d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> IvarOffsetValues; 1441d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 14421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump int superInstanceSize = !SuperClassDecl ? 0 : 14439cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Context.getASTObjCInterfaceLayout(SuperClassDecl).getSize() / 8; 14449cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // For non-fragile ivars, set the instance size to 0 - {the size of just this 14459cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // class}. The runtime will then set this to the correct value on load. 14469cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 14479cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian instanceSize = 0 - (instanceSize - superInstanceSize); 14489cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 14497f63cb098f2461643f71ea590c1a477603f27f63David Chisnall 14507f63cb098f2461643f71ea590c1a477603f27f63David Chisnall // Collect declared and synthesized ivars. 14517f63cb098f2461643f71ea590c1a477603f27f63David Chisnall llvm::SmallVector<ObjCIvarDecl*, 16> OIvars; 14527f63cb098f2461643f71ea590c1a477603f27f63David Chisnall CGM.getContext().ShallowCollectObjCIvars(ClassDecl, OIvars); 14537f63cb098f2461643f71ea590c1a477603f27f63David Chisnall 14547f63cb098f2461643f71ea590c1a477603f27f63David Chisnall for (unsigned i = 0, e = OIvars.size(); i != e; ++i) { 14557f63cb098f2461643f71ea590c1a477603f27f63David Chisnall ObjCIvarDecl *IVD = OIvars[i]; 14567ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Store the name 14577f63cb098f2461643f71ea590c1a477603f27f63David Chisnall IvarNames.push_back(MakeConstantString(IVD->getNameAsString())); 14587ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the type encoding for this ivar 14597ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 14607f63cb098f2461643f71ea590c1a477603f27f63David Chisnall Context.getObjCEncodingForType(IVD->getType(), TypeStr); 14618a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarTypes.push_back(MakeConstantString(TypeStr)); 14627ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the offset 1463d901da531433254210a08e8b1f9e1ad049b340aaDavid Chisnall uint64_t BaseOffset = ComputeIvarBaseOffset(CGM, OID, IVD); 1464aecbf24a6bad049437f8fec97e557d414003a3dbDavid Chisnall uint64_t Offset = BaseOffset; 14659cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 1466d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Offset = BaseOffset - superInstanceSize; 14679cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 14687ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar IvarOffsets.push_back( 14690032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), Offset)); 1470d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IvarOffsetValues.push_back(new llvm::GlobalVariable(TheModule, IntTy, 1471d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian false, llvm::GlobalValue::ExternalLinkage, 1472e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall llvm::ConstantInt::get(IntTy, Offset), 1473d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian "__objc_ivar_offset_value_" + ClassName +"." + 14747f63cb098f2461643f71ea590c1a477603f27f63David Chisnall IVD->getNameAsString())); 14757ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 1476d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *IvarOffsetArrayInit = 1477d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantArray::get(llvm::ArrayType::get(PtrToIntTy, 1478d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IvarOffsetValues.size()), IvarOffsetValues); 1479d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalVariable *IvarOffsetArray = new llvm::GlobalVariable(TheModule, 1480d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IvarOffsetArrayInit->getType(), false, 1481d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::InternalLinkage, IvarOffsetArrayInit, 1482d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ".ivar.offsets"); 14837ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 14847ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 14857ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> InstanceMethodSels; 14867ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 14871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCImplementationDecl::instmeth_iterator 148817945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->instmeth_begin(), endIter = OID->instmeth_end(); 1489653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 14907ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 14917ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 14927ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 14938a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 14947ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 1495d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1496d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Properties = GeneratePropertyList(OID, InstanceMethodSels, 1497d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes); 1498d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 14997ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 15007ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 15017ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> ClassMethodSels; 15027ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 1503653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCImplementationDecl::classmeth_iterator 150417945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->classmeth_begin(), endIter = OID->classmeth_end(); 1505653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 15067ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 15077ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 15087ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 15098a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 15107ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 15117ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 15127ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 15137ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCList<ObjCProtocolDecl> &Protos =ClassDecl->getReferencedProtocols(); 15147ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCList<ObjCProtocolDecl>::iterator I = Protos.begin(), 15157ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar E = Protos.end(); I != E; ++I) 1516d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 15177ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 15187ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 15197ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 152020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the superclass pointer. 152120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass; 15228ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner if (!SuperClassName.empty()) { 152320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov SuperClass = MakeConstantString(SuperClassName, ".super_class_name"); 152420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } else { 152503e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson SuperClass = llvm::ConstantPointerNull::get(PtrToInt8Ty); 152620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 152720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Empty vector used to construct empty method lists 152820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<llvm::Constant*, 1> empty; 152920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the method and instance variable lists 153020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MethodList = GenerateMethodList(ClassName, "", 1531a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner InstanceMethodSels, InstanceMethodTypes, false); 153220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = GenerateMethodList(ClassName, "", 1533a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassMethodSels, ClassMethodTypes, true); 153420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IvarList = GenerateIvarList(IvarNames, IvarTypes, 153520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarOffsets); 15361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Irrespective of whether we are compiling for a fragile or non-fragile ABI, 15378a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // we emit a symbol containing the offset for each ivar in the class. This 15388a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // allows code compiled for the non-Fragile ABI to inherit from code compiled 15398a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // for the legacy ABI, without causing problems. The converse is also 15408a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // possible, but causes all ivar accesses to be fragile. 1541e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall 15428a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Offset pointer for getting at the correct field in the ivar list when 15438a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // setting up the alias. These are: The base address for the global, the 15448a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // ivar array (second field), the ivar in this list (set for each ivar), and 15458a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // the offset (third field in ivar structure) 15468a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall const llvm::Type *IndexTy = llvm::Type::getInt32Ty(VMContext); 15478a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *offsetPointerIndexes[] = {Zeros[0], 15481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::ConstantInt::get(IndexTy, 1), 0, 15498a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::ConstantInt::get(IndexTy, 2) }; 15508a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall 1551e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall 1552e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall for (unsigned i = 0, e = OIvars.size(); i != e; ++i) { 1553e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall ObjCIvarDecl *IVD = OIvars[i]; 15548a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall const std::string Name = "__objc_ivar_offset_" + ClassName + '.' 1555e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall + IVD->getNameAsString(); 1556e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall offsetPointerIndexes[2] = llvm::ConstantInt::get(IndexTy, i); 15578a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Get the correct ivar field 15588a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *offsetValue = llvm::ConstantExpr::getGetElementPtr( 15598a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarList, offsetPointerIndexes, 4); 1560e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // Get the existing variable, if one exists. 15618a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *offset = TheModule.getNamedGlobal(Name); 15628a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (offset) { 15638a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offset->setInitializer(offsetValue); 15648a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // If this is the real definition, change its linkage type so that 15658a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // different modules will use this one, rather than their private 15668a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // copy. 15678a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offset->setLinkage(llvm::GlobalValue::ExternalLinkage); 15688a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } else { 15698a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Add a new alias if there isn't one already. 15708a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offset = new llvm::GlobalVariable(TheModule, offsetValue->getType(), 15718a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall false, llvm::GlobalValue::ExternalLinkage, offsetValue, Name); 15728a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 15738a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 157420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //Generate metaclass for class methods 157520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClassStruct = GenerateClassStructure(NULLPtr, 15761804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall NULLPtr, 0x12L, ClassName.c_str(), 0, Zeros[0], GenerateIvarList( 15778c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall empty, empty, empty), ClassMethodList, NULLPtr, NULLPtr, NULLPtr, true); 15785efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 157920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the class structure 15808ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner llvm::Constant *ClassStruct = 1581d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateClassStructure(MetaClassStruct, SuperClass, 0x11L, 15828ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner ClassName.c_str(), 0, 15834a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::ConstantInt::get(LongTy, instanceSize), IvarList, 1584d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList, GenerateProtocolList(Protocols), IvarOffsetArray, 1585d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties); 15865efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 15875efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Resolve the class aliases, if they exist. 15885efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (ClassPtrAlias) { 15895efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ClassPtrAlias->setAliasee( 15903c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(ClassStruct, IdTy)); 15915efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ClassPtrAlias = 0; 15925efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 15935efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (MetaClassPtrAlias) { 15945efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias->setAliasee( 15953c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(MetaClassStruct, IdTy)); 15965efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias = 0; 15975efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 15985efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 159920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Add class structure to list to be added to the symtab later 16003c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson ClassStruct = llvm::ConstantExpr::getBitCast(ClassStruct, PtrToInt8Ty); 160120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(ClassStruct); 160220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 160320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1604c38e9affd4519ea199af22419c8c794973cc4b23Fariborz Jahanian 16051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpllvm::Function *CGObjCGNU::ModuleInitFunction() { 160620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Only emit an ObjC load function if no Objective-C stuff has been called 160720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov if (Classes.empty() && Categories.empty() && ConstantStrings.empty() && 160820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ExistingProtocols.empty() && TypedSelectors.empty() && 16095f58b911304f7d114f929d1726a09cd1c828a5ddAnton Korobeynikov UntypedSelectors.empty()) 161020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return NULL; 16111b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 1612d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all referenced protocols to a category. 1613d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolHolderCategory(); 1614d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1615e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::StructType *SelStructTy = dyn_cast<llvm::StructType>( 1616e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelectorTy->getElementType()); 1617e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::Type *SelStructPtrTy = SelectorTy; 1618e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner bool isSelOpaque = false; 1619e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (SelStructTy == 0) { 162047a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson SelStructTy = llvm::StructType::get(VMContext, PtrToInt8Ty, 162147a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson PtrToInt8Ty, NULL); 162296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson SelStructPtrTy = llvm::PointerType::getUnqual(SelStructTy); 1623e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner isSelOpaque = true; 1624e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 1625e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 16261b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman // Name the ObjC types to make the IR a bit easier to read 1627e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner TheModule.addTypeName(".objc_selector", SelStructPtrTy); 16281b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman TheModule.addTypeName(".objc_id", IdTy); 16291b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman TheModule.addTypeName(".objc_imp", IMPTy); 16301b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 163120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 163271238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::Constant *Statics = NULLPtr; 163320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate statics list: 163471238f67c5df13eef19450d66b7a7ab28377192aChris Lattner if (ConstantStrings.size()) { 163596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *StaticsArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 163671238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.size() + 1); 163771238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.push_back(NULLPtr); 16388a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall 16391b0969590e712d7d52fc9c0d43d3ab85c36d07a6Daniel Dunbar llvm::StringRef StringClass = CGM.getLangOptions().ObjCConstantStringClass; 16401b0969590e712d7d52fc9c0d43d3ab85c36d07a6Daniel Dunbar if (StringClass.empty()) StringClass = "NXConstantString"; 16418a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MakeConstantString(StringClass, 16428a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ".objc_static_class_name")); 16437db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson Elements.push_back(llvm::ConstantArray::get(StaticsArrayTy, 164471238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings)); 16451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::StructType *StaticsListTy = 164647a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType::get(VMContext, PtrToInt8Ty, StaticsArrayTy, NULL); 1647a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson llvm::Type *StaticsListPtrTy = 164896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(StaticsListTy); 164971238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListTy, Elements, ".objc_statics"); 16501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::ArrayType *StaticsListArrayTy = 165196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType::get(StaticsListPtrTy, 2); 165271238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.clear(); 165371238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.push_back(Statics); 1654c9c88b4159791c48e486ca94e3743b5979e2b7a6Owen Anderson Elements.push_back(llvm::Constant::getNullValue(StaticsListPtrTy)); 165571238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListArrayTy, Elements, ".objc_statics_ptr"); 16563c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Statics = llvm::ConstantExpr::getBitCast(Statics, PtrTy); 165771238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 165820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of classes, categories, and constant objects 165996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ClassListTy = llvm::ArrayType::get(PtrToInt8Ty, 166020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size() + Categories.size() + 2); 16611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::StructType *SymTabTy = llvm::StructType::get(VMContext, 166247a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson LongTy, SelStructPtrTy, 16630032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getInt16Ty(VMContext), 16640032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getInt16Ty(VMContext), 1665630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ClassListTy, NULL); 166620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 166720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 166820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Pointer to an array of selectors used in this module. 166920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Selectors; 167020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (std::map<TypedSelector, llvm::GlobalAlias*>::iterator 167120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter = TypedSelectors.begin(), iterEnd = TypedSelectors.end(); 167220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd ; ++iter) { 1673d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(ExportUniqueString(iter->first.first, ".objc_sel_name")); 1674a7c5b0832cc78efa899463b8faa573a1473d53d2David Chisnall Elements.push_back(MakeConstantString(iter->first.second, 1675630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ".objc_sel_types")); 167608e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 167720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 167820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 167920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (llvm::StringMap<llvm::GlobalAlias*>::iterator 168020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter = UntypedSelectors.begin(), iterEnd = UntypedSelectors.end(); 1681630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner iter != iterEnd; ++iter) { 168220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( 1683d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExportUniqueString(iter->getKeyData(), ".objc_sel_name")); 168420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 168508e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 168620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 168720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 168820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 168920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 169008e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 169120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 169220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of static selectors 16934a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, Selectors.size() )); 169420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SelectorList = MakeGlobal( 169596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType::get(SelStructTy, Selectors.size()), Selectors, 169620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_selector_list"); 16971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantExpr::getBitCast(SelectorList, 1698e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelStructPtrTy)); 169920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 170020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Now that all of the static selectors exist, create pointers to them. 170120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov int index = 0; 170220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (std::map<TypedSelector, llvm::GlobalAlias*>::iterator 170320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter=TypedSelectors.begin(), iterEnd =TypedSelectors.end(); 170420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd; ++iter) { 170520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 17060032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), index++), Zeros[0]}; 17076d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar llvm::Constant *SelPtr = new llvm::GlobalVariable(TheModule, SelStructPtrTy, 170822b8827d340d2993639c2ec53e9d2b4e4d876bebDavid Chisnall true, llvm::GlobalValue::LinkOnceODRLinkage, 170922b8827d340d2993639c2ec53e9d2b4e4d876bebDavid Chisnall llvm::ConstantExpr::getGetElementPtr(SelectorList, Idxs, 2), 171022b8827d340d2993639c2ec53e9d2b4e4d876bebDavid Chisnall MangleSelectorTypes(".objc_sel_ptr"+iter->first.first+"."+ 171122b8827d340d2993639c2ec53e9d2b4e4d876bebDavid Chisnall iter->first.second)); 1712e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // If selectors are defined as an opaque type, cast the pointer to this 1713e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // type. 1714e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (isSelOpaque) { 17156d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar SelPtr = llvm::ConstantExpr::getBitCast(SelPtr, 17166d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar llvm::PointerType::getUnqual(SelectorTy)); 1717e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 171887935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall (*iter).second->replaceAllUsesWith(SelPtr); 171987935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall (*iter).second->eraseFromParent(); 172020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 172120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (llvm::StringMap<llvm::GlobalAlias*>::iterator 172220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter=UntypedSelectors.begin(), iterEnd = UntypedSelectors.end(); 172320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd; iter++) { 172420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 17250032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), index++), Zeros[0]}; 172687935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall llvm::Constant *SelPtr = new llvm::GlobalVariable(TheModule, SelStructPtrTy, 172722b8827d340d2993639c2ec53e9d2b4e4d876bebDavid Chisnall true, llvm::GlobalValue::LinkOnceODRLinkage, 172822b8827d340d2993639c2ec53e9d2b4e4d876bebDavid Chisnall llvm::ConstantExpr::getGetElementPtr(SelectorList, Idxs, 2), 172922b8827d340d2993639c2ec53e9d2b4e4d876bebDavid Chisnall MangleSelectorTypes(std::string(".objc_sel_ptr")+iter->getKey().str())); 1730e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // If selectors are defined as an opaque type, cast the pointer to this 1731e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // type. 1732e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (isSelOpaque) { 17336d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar SelPtr = llvm::ConstantExpr::getBitCast(SelPtr, 17346d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar llvm::PointerType::getUnqual(SelectorTy)); 1735e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 173687935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall (*iter).second->replaceAllUsesWith(SelPtr); 173787935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall (*iter).second->eraseFromParent(); 173820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 173920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of classes defined. 17401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantInt::get(llvm::Type::getInt16Ty(VMContext), 174120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size())); 174220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of categories defined 17431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantInt::get(llvm::Type::getInt16Ty(VMContext), 174420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Categories.size())); 174520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an array of classes, then categories, then static object instances 174620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.insert(Classes.end(), Categories.begin(), Categories.end()); 174720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // NULL-terminated list of static object instances (mainly constant strings) 174820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(Statics); 174920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(NULLPtr); 17507db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *ClassList = llvm::ConstantArray::get(ClassListTy, Classes); 175120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassList); 17521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Construct the symbol table 175320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SymTab= MakeGlobal(SymTabTy, Elements); 175420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 175520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The symbol table is contained in a module which has some version-checking 175620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // constants 175747a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType * ModuleTy = llvm::StructType::get(VMContext, LongTy, LongTy, 175896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson PtrToInt8Ty, llvm::PointerType::getUnqual(SymTabTy), NULL); 175920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 176020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Runtime version used for compatibility checking. 17619cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 17621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantInt::get(LongTy, 1763d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NonFragileRuntimeVersion)); 17649cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } else { 17654a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, RuntimeVersion)); 17669cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 176791a0b51438e5259a79d68d7450c453827beed9e2Fariborz Jahanian // sizeof(ModuleTy) 176874a8bbf0654fbbf37be04b240b5bbe591f37f242Benjamin Kramer llvm::TargetData td(&TheModule); 17694a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, 1770a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson td.getTypeSizeInBits(ModuleTy)/8)); 177120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //FIXME: Should be the path to the file where this module was declared 177220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 177320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SymTab); 177420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *Module = MakeGlobal(ModuleTy, Elements); 177520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 177620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create the load function calling the runtime entry point with the module 177720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // structure 177820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function * LoadFunction = llvm::Function::Create( 17790032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), false), 178020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, ".objc_load_function", 178120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &TheModule); 17820032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::BasicBlock *EntryBB = 17830032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::BasicBlock::Create(VMContext, "entry", LoadFunction); 1784a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson CGBuilderTy Builder(VMContext); 178520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.SetInsertPoint(EntryBB); 178626c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 178726c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params(1, 178896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(ModuleTy)); 178996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::Value *Register = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 17900032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getVoidTy(VMContext), Params, true), "__objc_exec_class"); 179120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateCall(Register, Module); 179220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateRetVoid(); 17939cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 179420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return LoadFunction; 179520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 17967ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 1797679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanianllvm::Function *CGObjCGNU::GenerateMethod(const ObjCMethodDecl *OMD, 17981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCContainerDecl *CD) { 17991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCCategoryImplDecl *OCD = 18003e0a540b6d846178857289ec0eb8470a278d11a3Steve Naroff dyn_cast<ObjCCategoryImplDecl>(OMD->getDeclContext()); 1801077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner std::string CategoryName = OCD ? OCD->getNameAsString() : ""; 18024c8c8e93ca3b63de4d30f4a460b50fe63fd6bd3bDavid Chisnall std::string ClassName = CD->getName(); 1803077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner std::string MethodName = OMD->getSelector().getAsString(); 1804f8d49f64ef6ab7e632717a31631fc289aab69428Douglas Gregor bool isClassMethod = !OMD->isInstanceMethod(); 1805391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 1806541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar CodeGenTypes &Types = CGM.getTypes(); 18071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::FunctionType *MethodTy = 1808541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar Types.GetFunctionType(Types.getFunctionInfo(OMD), OMD->isVariadic()); 180920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::string FunctionName = SymbolNameForMethod(ClassName, CategoryName, 181020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodName, isClassMethod); 181120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1812d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar llvm::Function *Method 18131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump = llvm::Function::Create(MethodTy, 18141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalValue::InternalLinkage, 18151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump FunctionName, 18161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump &TheModule); 1817391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner return Method; 1818391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 1819391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 182049f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbarllvm::Function *CGObjCGNU::GetPropertyGetFunction() { 18211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<const llvm::Type*> Params; 18221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::Type *BoolTy = 18231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump CGM.getTypes().ConvertType(CGM.getContext().BoolTy); 18241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(IdTy); 18251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(SelectorTy); 18267f63cb098f2461643f71ea590c1a477603f27f63David Chisnall Params.push_back(IntTy); 18271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(BoolTy); 18287f63cb098f2461643f71ea590c1a477603f27f63David Chisnall // void objc_getProperty (id, SEL, int, bool) 18291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::FunctionType *FTy = 18301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::FunctionType::get(IdTy, Params, false); 18311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return cast<llvm::Function>(CGM.CreateRuntimeFunction(FTy, 18321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump "objc_getProperty")); 183349f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 183449f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 183549f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbarllvm::Function *CGObjCGNU::GetPropertySetFunction() { 18361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<const llvm::Type*> Params; 18371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::Type *BoolTy = 18381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump CGM.getTypes().ConvertType(CGM.getContext().BoolTy); 18391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(IdTy); 18401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(SelectorTy); 18417f63cb098f2461643f71ea590c1a477603f27f63David Chisnall Params.push_back(IntTy); 18421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(IdTy); 18431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(BoolTy); 18441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(BoolTy); 18457f63cb098f2461643f71ea590c1a477603f27f63David Chisnall // void objc_setProperty (id, SEL, int, id, bool, bool) 18461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::FunctionType *FTy = 18471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), Params, false); 18481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return cast<llvm::Function>(CGM.CreateRuntimeFunction(FTy, 18491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump "objc_setProperty")); 185049f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 185149f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 18526cc590602f41c3e98e8af0023d54296c8eca7910Fariborz Jahanian// FIXME. Implement this. 18536cc590602f41c3e98e8af0023d54296c8eca7910Fariborz Jahanianllvm::Function *CGObjCGNU::GetCopyStructFunction() { 18546cc590602f41c3e98e8af0023d54296c8eca7910Fariborz Jahanian return 0; 18556cc590602f41c3e98e8af0023d54296c8eca7910Fariborz Jahanian} 18566cc590602f41c3e98e8af0023d54296c8eca7910Fariborz Jahanian 1857309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbarllvm::Constant *CGObjCGNU::EnumerationMutationFunction() { 1858309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar CodeGen::CodeGenTypes &Types = CGM.getTypes(); 1859309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar ASTContext &Ctx = CGM.getContext(); 1860309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar // void objc_enumerationMutation (id) 1861ead608af31b6c9abeae1ca6d0b75094dac4641c0John McCall llvm::SmallVector<CanQualType,1> Params; 18620f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall Params.push_back(ASTIdTy); 1863309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar const llvm::FunctionType *FTy = 186404a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall Types.GetFunctionType(Types.getFunctionInfo(Ctx.VoidTy, Params, 1865264ba48dc98f3f843935a485d5b086f7e0fdc4f1Rafael Espindola FunctionType::ExtInfo()), false); 1866309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar return CGM.CreateRuntimeFunction(FTy, "objc_enumerationMutation"); 18672abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson} 18682abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson 1869740e807eee153348f50a86f4a6eac49f324467abJohn McCallnamespace { 18701f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall struct CallSyncExit : EHScopeStack::Cleanup { 1871740e807eee153348f50a86f4a6eac49f324467abJohn McCall llvm::Value *SyncExitFn; 1872740e807eee153348f50a86f4a6eac49f324467abJohn McCall llvm::Value *SyncArg; 1873740e807eee153348f50a86f4a6eac49f324467abJohn McCall CallSyncExit(llvm::Value *SyncExitFn, llvm::Value *SyncArg) 1874740e807eee153348f50a86f4a6eac49f324467abJohn McCall : SyncExitFn(SyncExitFn), SyncArg(SyncArg) {} 1875740e807eee153348f50a86f4a6eac49f324467abJohn McCall 1876740e807eee153348f50a86f4a6eac49f324467abJohn McCall void Emit(CodeGenFunction &CGF, bool IsForEHCleanup) { 1877740e807eee153348f50a86f4a6eac49f324467abJohn McCall CGF.Builder.CreateCall(SyncExitFn, SyncArg)->setDoesNotThrow(); 1878740e807eee153348f50a86f4a6eac49f324467abJohn McCall } 1879740e807eee153348f50a86f4a6eac49f324467abJohn McCall }; 1880740e807eee153348f50a86f4a6eac49f324467abJohn McCall} 1881740e807eee153348f50a86f4a6eac49f324467abJohn McCall 1882f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallvoid CGObjCGNU::EmitSynchronizedStmt(CodeGen::CodeGenFunction &CGF, 1883f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtSynchronizedStmt &S) { 1884f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall std::vector<const llvm::Type*> Args(1, IdTy); 1885f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::FunctionType *FTy = 1886f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), Args, false); 18875dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1888f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // Evaluate the lock operand. This should dominate the cleanup. 1889f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Value *SyncArg = 1890f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGF.EmitScalarExpr(S.getSynchExpr()); 1891d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner 1892f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // Acquire the lock. 1893f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Value *SyncEnter = CGM.CreateRuntimeFunction(FTy, "objc_sync_enter"); 1894f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall SyncArg = CGF.Builder.CreateBitCast(SyncArg, IdTy); 1895f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGF.Builder.CreateCall(SyncEnter, SyncArg); 18965dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1897f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // Register an all-paths cleanup to release the lock. 1898740e807eee153348f50a86f4a6eac49f324467abJohn McCall llvm::Value *SyncExit = CGM.CreateRuntimeFunction(FTy, "objc_sync_exit"); 18991f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall CGF.EHStack.pushCleanup<CallSyncExit>(NormalAndEHCleanup, SyncExit, SyncArg); 19005dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1901f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // Emit the body of the statement. 1902f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGF.EmitStmt(S.getSynchBody()); 19035dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1904f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // Pop the lock-release cleanup. 1905f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGF.PopCleanupBlock(); 1906f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall} 19075dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1908f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallnamespace { 1909f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall struct CatchHandler { 1910f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const VarDecl *Variable; 1911f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const Stmt *Body; 1912f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *Block; 1913f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Value *TypeInfo; 1914f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall }; 1915f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall} 19165dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1917f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallvoid CGObjCGNU::EmitTryStmt(CodeGen::CodeGenFunction &CGF, 1918f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtTryStmt &S) { 1919f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // Unlike the Apple non-fragile runtimes, which also uses 1920f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // unwind-based zero cost exceptions, the GNU Objective C runtime's 1921f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // EH support isn't a veneer over C++ EH. Instead, exception 1922f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // objects are created by __objc_exception_throw and destroyed by 1923f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // the personality function; this avoids the need for bracketing 1924f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // catch handlers with calls to __blah_begin_catch/__blah_end_catch 1925f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // (or even _Unwind_DeleteException), but probably doesn't 1926f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // interoperate very well with foreign exceptions. 1927f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1928f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // Jump destination for falling out of catch bodies. 1929f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CodeGenFunction::JumpDest Cont; 1930f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall if (S.getNumCatchStmts()) 1931f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall Cont = CGF.getJumpDestInCurrentScope("eh.cont"); 1932f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1933f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // We handle @finally statements by pushing them as a cleanup 1934f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // before entering the catch. 1935f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CodeGenFunction::FinallyInfo FinallyInfo; 1936f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall if (const ObjCAtFinallyStmt *Finally = S.getFinallyStmt()) { 1937f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall std::vector<const llvm::Type*> Args(1, IdTy); 1938f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::FunctionType *FTy = 1939f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), Args, false); 1940f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Constant *Rethrow = 1941f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGM.CreateRuntimeFunction(FTy, "objc_exception_throw"); 19425dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1943f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall FinallyInfo = CGF.EnterFinallyBlock(Finally->getFinallyBody(), 0, 0, 1944f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall Rethrow); 1945f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 19465dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1947f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::SmallVector<CatchHandler, 8> Handlers; 19481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1949f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // Enter the catch, if there is one. 1950f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall if (S.getNumCatchStmts()) { 1951f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall for (unsigned I = 0, N = S.getNumCatchStmts(); I != N; ++I) { 1952f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtCatchStmt *CatchStmt = S.getCatchStmt(I); 1953f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const VarDecl *CatchDecl = CatchStmt->getCatchParamDecl(); 19545dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1955f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall Handlers.push_back(CatchHandler()); 1956f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CatchHandler &Handler = Handlers.back(); 1957f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall Handler.Variable = CatchDecl; 1958f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall Handler.Body = CatchStmt->getCatchBody(); 1959f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall Handler.Block = CGF.createBasicBlock("catch"); 19605dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1961f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // @catch() and @catch(id) both catch any ObjC exception. 1962f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // Treat them as catch-alls. 1963f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // FIXME: this is what this code was doing before, but should 'id' 1964f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // really be catching foreign exceptions? 1965f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall if (!CatchDecl 1966f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall || CatchDecl->getType()->isObjCIdType() 1967f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall || CatchDecl->getType()->isObjCQualifiedIdType()) { 19685dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1969f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall Handler.TypeInfo = 0; // catch-all 1970f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1971f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // Don't consider any other catches. 1972f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall break; 1973f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 19745dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1975f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // All other types should be Objective-C interface pointer types. 1976f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCObjectPointerType *OPT = 1977f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CatchDecl->getType()->getAs<ObjCObjectPointerType>(); 1978f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall assert(OPT && "Invalid @catch type."); 1979f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCInterfaceDecl *IDecl = 1980f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall OPT->getObjectType()->getInterface(); 1981f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall assert(IDecl && "Invalid @catch type."); 1982f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall Handler.TypeInfo = MakeConstantString(IDecl->getNameAsString()); 19835dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 1984f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1985f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall EHCatchScope *Catch = CGF.EHStack.pushCatch(Handlers.size()); 1986f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall for (unsigned I = 0, E = Handlers.size(); I != E; ++I) 1987f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall Catch->setHandler(I, Handlers[I].TypeInfo, Handlers[I].Block); 19885dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 1989f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1990f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // Emit the try body. 1991f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGF.EmitStmt(S.getTryBody()); 1992d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner 1993f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // Leave the try. 1994f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall if (S.getNumCatchStmts()) 1995f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGF.EHStack.popCatch(); 19965dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1997f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // Remember where we were. 1998f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGBuilderTy::InsertPoint SavedIP = CGF.Builder.saveAndClearIP(); 19995dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 2000f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // Emit the handlers. 2001f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall for (unsigned I = 0, E = Handlers.size(); I != E; ++I) { 2002f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CatchHandler &Handler = Handlers[I]; 2003f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGF.EmitBlock(Handler.Block); 20045dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 2005f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Value *Exn = CGF.Builder.CreateLoad(CGF.getExceptionSlot()); 2006d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner 2007f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // Bind the catch parameter if it exists. 2008f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall if (const VarDecl *CatchParam = Handler.Variable) { 2009f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const llvm::Type *CatchType = CGF.ConvertType(CatchParam->getType()); 2010f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall Exn = CGF.Builder.CreateBitCast(Exn, CatchType); 2011f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 2012b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall CGF.EmitAutoVarDecl(*CatchParam); 2013f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGF.Builder.CreateStore(Exn, CGF.GetAddrOfLocalVar(CatchParam)); 2014f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 20155dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 2016f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGF.ObjCEHValueStack.push_back(Exn); 2017f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGF.EmitStmt(Handler.Body); 2018f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGF.ObjCEHValueStack.pop_back(); 20195dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 2020f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGF.EmitBranchThroughCleanup(Cont); 2021f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 20225dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 2023f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // Go back to the try-statement fallthrough. 2024f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGF.Builder.restoreIP(SavedIP); 20251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2026f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // Pop out of the finally. 2027f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall if (S.getFinallyStmt()) 2028f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGF.ExitFinallyBlock(FinallyInfo); 20295dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 2030ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall if (Cont.isValid()) { 2031ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall if (Cont.getBlock()->use_empty()) 2032ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall delete Cont.getBlock(); 2033ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall else 2034ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall CGF.EmitBlock(Cont.getBlock()); 2035f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 203664d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 203764d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 203864d5d6c5903157c521af496479d06dc26032d718Anders Carlssonvoid CGObjCGNU::EmitThrowStmt(CodeGen::CodeGenFunction &CGF, 203949f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar const ObjCAtThrowStmt &S) { 20405dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ExceptionAsObject; 20415dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 20425dc0867af17b3bd6f567897433853b2b4767446cChris Lattner std::vector<const llvm::Type*> Args(1, IdTy); 20435dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::FunctionType *FTy = 20440032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), Args, false); 20451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *ThrowFn = 20465dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGM.CreateRuntimeFunction(FTy, "objc_exception_throw"); 20471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20485dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const Expr *ThrowExpr = S.getThrowExpr()) { 20495dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *Exception = CGF.EmitScalarExpr(ThrowExpr); 20501e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ExceptionAsObject = Exception; 20515dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 20521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((!CGF.ObjCEHValueStack.empty() && CGF.ObjCEHValueStack.back()) && 20535dc0867af17b3bd6f567897433853b2b4767446cChris Lattner "Unexpected rethrow outside @catch block."); 20545dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ExceptionAsObject = CGF.ObjCEHValueStack.back(); 20555dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 20561e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ExceptionAsObject = 20571e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian CGF.Builder.CreateBitCast(ExceptionAsObject, IdTy, "tmp"); 20581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20595dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Note: This may have to be an invoke, if we want to support constructs like: 20605dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @try { 20615dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @throw(obj); 20625dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // } 20635dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @catch(id) ... 20645dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // 20655dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // This is effectively turning @throw into an incredibly-expensive goto, but 20665dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // it may happen as a result of inlining followed by missed optimizations, or 20675dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // as a result of stupidity. 20685dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *UnwindBB = CGF.getInvokeDest(); 20695dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!UnwindBB) { 20705dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateCall(ThrowFn, ExceptionAsObject); 20715dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateUnreachable(); 20725dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 20735dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateInvoke(ThrowFn, UnwindBB, UnwindBB, &ExceptionAsObject, 20745dc0867af17b3bd6f567897433853b2b4767446cChris Lattner &ExceptionAsObject+1); 20755dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 20765dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Clear the insertion point to indicate we are in unreachable code. 20775dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.ClearInsertionPoint(); 207864d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 207964d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 20803e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanianllvm::Value * CGObjCGNU::EmitObjCWeakRead(CodeGen::CodeGenFunction &CGF, 20811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *AddrWeakObj) { 2082ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2083ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall AddrWeakObj = EnforceType(B, AddrWeakObj, IdTy); 2084ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return B.CreateCall(WeakReadFn, AddrWeakObj); 20856dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian} 20866dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian 20873e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanianvoid CGObjCGNU::EmitObjCWeakAssign(CodeGen::CodeGenFunction &CGF, 20881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *src, llvm::Value *dst) { 2089ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2090ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2091ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2092ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall2(WeakAssignFn, src, dst); 20933e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian} 20943e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian 209558626500527695865683d1d65053743de8770b60Fariborz Jahanianvoid CGObjCGNU::EmitObjCGlobalAssign(CodeGen::CodeGenFunction &CGF, 2096021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian llvm::Value *src, llvm::Value *dst, 2097021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian bool threadlocal) { 2098ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2099ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2100ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2101021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian if (!threadlocal) 2102021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian B.CreateCall2(GlobalAssignFn, src, dst); 2103021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian else 2104021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian // FIXME. Add threadloca assign API 2105021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian assert(false && "EmitObjCGlobalAssign - Threal Local API NYI"); 210658626500527695865683d1d65053743de8770b60Fariborz Jahanian} 210758626500527695865683d1d65053743de8770b60Fariborz Jahanian 21087eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanianvoid CGObjCGNU::EmitObjCIvarAssign(CodeGen::CodeGenFunction &CGF, 21096c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *src, llvm::Value *dst, 21106c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *ivarOffset) { 2111ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2112ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2113ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2114ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall3(IvarAssignFn, src, dst, ivarOffset); 21157eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian} 21167eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian 211758626500527695865683d1d65053743de8770b60Fariborz Jahanianvoid CGObjCGNU::EmitObjCStrongCastAssign(CodeGen::CodeGenFunction &CGF, 21181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *src, llvm::Value *dst) { 2119ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2120ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2121ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2122ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall2(StrongCastAssignFn, src, dst); 212358626500527695865683d1d65053743de8770b60Fariborz Jahanian} 212458626500527695865683d1d65053743de8770b60Fariborz Jahanian 2125082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanianvoid CGObjCGNU::EmitGCMemmoveCollectable(CodeGen::CodeGenFunction &CGF, 21261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *DestPtr, 2127082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *SrcPtr, 212855bcace250e1ff366e4482714b344b8cbc8be5f3Fariborz Jahanian llvm::Value *Size) { 2129ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2130ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall DestPtr = EnforceType(B, DestPtr, IdTy); 2131ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall SrcPtr = EnforceType(B, SrcPtr, PtrToIdTy); 2132ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 213355bcace250e1ff366e4482714b344b8cbc8be5f3Fariborz Jahanian B.CreateCall3(MemMoveFn, DestPtr, SrcPtr, Size); 2134082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian} 2135082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian 21369cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianllvm::GlobalVariable *CGObjCGNU::ObjCIvarOffsetVariable( 21379cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *ID, 21389cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar) { 21399cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const std::string Name = "__objc_ivar_offset_" + ID->getNameAsString() 21409cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian + '.' + Ivar->getNameAsString(); 21419cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Emit the variable and initialize it with what we think the correct value 21429cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // is. This allows code compiled with non-fragile ivars to work correctly 21439cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // when linked against code which isn't (most of the time). 21448a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *IvarOffsetPointer = TheModule.getNamedGlobal(Name); 21458a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (!IvarOffsetPointer) { 2146e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // This will cause a run-time crash if we accidentally use it. A value of 2147e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // 0 would seem more sensible, but will silently overwrite the isa pointer 2148e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // causing a great deal of confusion. 2149e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall uint64_t Offset = -1; 2150e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // We can't call ComputeIvarBaseOffset() here if we have the 2151e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // implementation, because it will create an invalid ASTRecordLayout object 2152e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // that we are then stuck with forever, so we only initialize the ivar 2153e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // offset variable with a guess if we only have the interface. The 2154e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // initializer will be reset later anyway, when we are generating the class 2155e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // description. 2156e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall if (!CGM.getContext().getObjCImplementation( 2157cb421fa690da545b58a720abe5f1c49b166dbde7Dan Gohman const_cast<ObjCInterfaceDecl *>(ID))) 2158d901da531433254210a08e8b1f9e1ad049b340aaDavid Chisnall Offset = ComputeIvarBaseOffset(CGM, ID, Ivar); 2159d901da531433254210a08e8b1f9e1ad049b340aaDavid Chisnall 21609cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::ConstantInt *OffsetGuess = 2161f950837b8250c7f08d0b7b15ace0b35740721c9dDavid Chisnall llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), Offset, "ivar"); 21628a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Don't emit the guess in non-PIC code because the linker will not be able 21638a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // to replace it with the real version for a library. In non-PIC code you 21648a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // must compile with the fragile ABI if you want to use ivars from a 21651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // GCC-compiled class. 21668a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (CGM.getLangOptions().PICLevel) { 21678a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *IvarOffsetGV = new llvm::GlobalVariable(TheModule, 21688a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Type::getInt32Ty(VMContext), false, 21698a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalValue::PrivateLinkage, OffsetGuess, Name+".guess"); 21708a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetPointer = new llvm::GlobalVariable(TheModule, 21718a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetGV->getType(), false, llvm::GlobalValue::LinkOnceAnyLinkage, 21728a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetGV, Name); 21738a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } else { 21748a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetPointer = new llvm::GlobalVariable(TheModule, 21753c0ef8cc0dc246bd3083e8cdd63005e8873d36d2Benjamin Kramer llvm::Type::getInt32PtrTy(VMContext), false, 21763c0ef8cc0dc246bd3083e8cdd63005e8873d36d2Benjamin Kramer llvm::GlobalValue::ExternalLinkage, 0, Name); 21778a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 21789cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 21798a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall return IvarOffsetPointer; 21809cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 21819cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 2182598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz JahanianLValue CGObjCGNU::EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF, 2183598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 2184598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 2185598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 2186598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers) { 2187c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall const ObjCInterfaceDecl *ID = 2188c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall ObjectTy->getAs<ObjCObjectType>()->getInterface(); 21899777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar return EmitValueForIvarAtOffset(CGF, ID, BaseValue, Ivar, CVRQualifiers, 21909777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar EmitIvarOffset(CGF, ID, Ivar)); 21910bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian} 2192bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 21939cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianstatic const ObjCInterfaceDecl *FindIvarInterface(ASTContext &Context, 21949cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *OID, 21959cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *OIVD) { 21969cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::SmallVector<ObjCIvarDecl*, 16> Ivars; 21978e6ac1d80055fa37b9b84029c7e751624ba7f84cFariborz Jahanian Context.ShallowCollectObjCIvars(OID, Ivars); 21989cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian for (unsigned k = 0, e = Ivars.size(); k != e; ++k) { 21999cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (OIVD == Ivars[k]) 22009cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return OID; 22019cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 22021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 22039cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Otherwise check in the super class. 22049cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (const ObjCInterfaceDecl *Super = OID->getSuperClass()) 22059cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return FindIvarInterface(Context, Super, OIVD); 22061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 22079cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return 0; 22089cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 22090bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian 2210f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanianllvm::Value *CGObjCGNU::EmitIvarOffset(CodeGen::CodeGenFunction &CGF, 22112a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 2212f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar) { 22138a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (CGM.getLangOptions().ObjCNonFragileABI) { 22149cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Interface = FindIvarInterface(CGM.getContext(), Interface, Ivar); 22158a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall return CGF.Builder.CreateLoad(CGF.Builder.CreateLoad( 22168a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ObjCIvarOffsetVariable(Interface, Ivar), false, "ivar")); 22179cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 22189777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar uint64_t Offset = ComputeIvarBaseOffset(CGF.CGM, Interface, Ivar); 22194a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson return llvm::ConstantInt::get(LongTy, Offset, "ivar"); 2220f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian} 2221f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian 2222bb1c8600218b3244340331165fc7cba7bf227655Mike StumpCodeGen::CGObjCRuntime * 2223bb1c8600218b3244340331165fc7cba7bf227655Mike StumpCodeGen::CreateGNUObjCRuntime(CodeGen::CodeGenModule &CGM) { 2224dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner return new CGObjCGNU(CGM); 22250f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 2226