CGObjCGNU.cpp revision a5f4441de7890953460d95f4e88b9fa432b48dc2
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// 10fc8f0e14ad142ed811e90fbd9a30e419e301c717Chris Lattner// This provides Objective-C code generation targeting 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" 2036f893c1efe367f929d92c8b125f964c22ba189eJohn McCall#include "CGCleanup.h" 21dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner#include "clang/AST/ASTContext.h" 22e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar#include "clang/AST/Decl.h" 23af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar#include "clang/AST/DeclObjC.h" 2419cc4abea06a9b49e0e16a50d335c064cd723572Anders Carlsson#include "clang/AST/RecordLayout.h" 2516f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/AST/StmtObjC.h" 269f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall#include "clang/Basic/SourceManager.h" 279f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall#include "clang/Basic/FileManager.h" 285dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 295dc0867af17b3bd6f567897433853b2b4767446cChris Lattner#include "llvm/Intrinsics.h" 300f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "llvm/Module.h" 31c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall#include "llvm/LLVMContext.h" 320f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "llvm/ADT/SmallVector.h" 3320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov#include "llvm/ADT/StringMap.h" 3480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall#include "llvm/Support/CallSite.h" 357ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar#include "llvm/Support/Compiler.h" 367ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar#include "llvm/Target/TargetData.h" 375dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 385f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner#include <cstdarg> 39e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 40e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 41dce1406f1c1f572cfd61c494546572d63461c741Chris Lattnerusing namespace clang; 4246f45b9bec4a265ad8400a538e5ec3a5683617f1Daniel Dunbarusing namespace CodeGen; 4320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 440f984268b05edab2cc555a427c441baa9c252658Chris Lattner 450f984268b05edab2cc555a427c441baa9c252658Chris Lattnernamespace { 4681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// Class that lazily initialises the runtime function. Avoids inserting the 4781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// types and the function declaration into a module if they're not used, and 4881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// avoids constructing the type more than once if it's used more than once. 499f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass LazyRuntimeFunction { 509f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CodeGenModule *CGM; 519cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner std::vector<llvm::Type*> ArgTys; 529f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const char *FunctionName; 53789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall llvm::Constant *Function; 549f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall public: 5581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Constructor leaves this class uninitialized, because it is intended to 5681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// be used as a field in another class and not all of the types that are 5781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used as arguments will necessarily be available at construction time. 589f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction() : CGM(0), FunctionName(0), Function(0) {} 599f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 6081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Initialises the lazy function with the name, return type, and the types 6181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// of the arguments. 629f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall END_WITH_NULL 639f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall void init(CodeGenModule *Mod, const char *name, 649cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *RetTy, ...) { 659f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CGM =Mod; 669f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall FunctionName = name; 679f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Function = 0; 689735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall ArgTys.clear(); 699f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall va_list Args; 709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall va_start(Args, RetTy); 719cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner while (llvm::Type *ArgTy = va_arg(Args, llvm::Type*)) 729f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.push_back(ArgTy); 739f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall va_end(Args); 749f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // Push the return type on at the end so we can pop it off easily 759f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.push_back(RetTy); 769f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 7781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Overloaded cast operator, allows the class to be implicitly cast to an 7881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM constant. 79789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall operator llvm::Constant*() { 809f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (!Function) { 819735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall if (0 == FunctionName) return 0; 829735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // We put the return type on the end of the vector, so pop it back off 832acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *RetTy = ArgTys.back(); 849f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.pop_back(); 859f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::FunctionType *FTy = llvm::FunctionType::get(RetTy, ArgTys, false); 869f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Function = 87789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall cast<llvm::Constant>(CGM->CreateRuntimeFunction(FTy, FunctionName)); 889735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // We won't need to use the types again, so we may as well clean up the 899735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // vector now 909f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.resize(0); 919f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 929f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return Function; 939f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 94789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall operator llvm::Function*() { 955f0bcc4c3f4a75375a3571e71bffebf603f4ca67David Chisnall return cast<llvm::Function>((llvm::Constant*)*this); 96789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall } 975f0bcc4c3f4a75375a3571e71bffebf603f4ca67David Chisnall 989f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall}; 999f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 1009f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 10181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// GNU Objective-C runtime code generation. This class implements the parts of 10281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// Objective-C support that are specific to the GNU family of runtimes (GCC and 10381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// GNUstep). 1049f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass CGObjCGNU : public CGObjCRuntime { 105c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnallprotected: 10681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The LLVM module into which output is inserted 1070f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Module &TheModule; 10881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// strut objc_super. Used for sending messages to super. This structure 10981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// contains the receiver (object) and the expected class. 1102acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::StructType *ObjCSuperTy; 11181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// struct objc_super*. The type of the argument to the superclass message 11281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// lookup functions. 1132acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *PtrToObjCSuperTy; 11481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for selectors. Opaque pointer (i8*) unless a header declaring 11581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// SEL is included in a header somewhere, in which case it will be whatever 11681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// type is declared in that header, most likely {i8*, i8*}. 1179cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *SelectorTy; 11881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM i8 type. Cached here to avoid repeatedly getting it in all of the 11981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// places where it's used 1202acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::IntegerType *Int8Ty; 12181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Pointer to i8 - LLVM type of char*, for all of the places where the 12281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// runtime needs to deal with C strings. 1239cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *PtrToInt8Ty; 12481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Instance Method Pointer type. This is a pointer to a function that takes, 12581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// at a minimum, an object and a selector, and is the generic type for 12681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Objective-C methods. Due to differences between variadic / non-variadic 12781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// calling conventions, it must always be cast to the correct type before 12881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// actually being used. 1299cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *IMPTy; 13081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Type of an untyped Objective-C object. Clang treats id as a built-in type 13181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// when compiling Objective-C code, so this may be an opaque pointer (i8*), 13281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// but if the runtime header declaring it is included then it may be a 13381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// pointer to a structure. 1349cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *IdTy; 13581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Pointer to a pointer to an Objective-C object. Used in the new ABI 13681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// message lookup function and some GC-related functions. 1372acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *PtrToIdTy; 13881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The clang type of id. Used when using the clang CGCall infrastructure to 13981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// call Objective-C methods. 140ead608af31b6c9abeae1ca6d0b75094dac4641c0John McCall CanQualType ASTIdTy; 14181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C int type. 1429cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::IntegerType *IntTy; 14381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for an opaque pointer. This is identical to PtrToInt8Ty, but is 14481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used in the code to document the difference between i8* meaning a pointer 14581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// to a C string and i8* meaning a pointer to some opaque type. 1469cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *PtrTy; 14781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C long type. The runtime uses this in a lot of places where 14881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// it should be using intptr_t, but we can't fix this without breaking 14981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// compatibility with GCC... 150ef6de3da8572607f786303c07150daa6e140ab19Jay Foad llvm::IntegerType *LongTy; 15181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C size_t. Used in various runtime data structures. 1522acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::IntegerType *SizeTy; 15349de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall /// LLVM type for C intptr_t. 15449de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall llvm::IntegerType *IntPtrTy; 15581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C ptrdiff_t. Mainly used in property accessor functions. 1562acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::IntegerType *PtrDiffTy; 15781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C int*. Used for GCC-ABI-compatible non-fragile instance 15881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// variables. 1592acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *PtrToIntTy; 16081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for Objective-C BOOL type. 1612acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *BoolTy; 162917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// 32-bit integer type, to save us needing to look it up every time it's used. 163917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::IntegerType *Int32Ty; 164917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// 64-bit integer type, to save us needing to look it up every time it's used. 165917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::IntegerType *Int64Ty; 16681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Metadata kind used to tie method lookups to message sends. The GNUstep 16781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// runtime provides some LLVM passes that can use this to do things like 16881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// automatic IMP caching and speculative inlining. 169c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall unsigned msgSendMDKind; 17081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Helper function that generates a constant string and returns a pointer to 17181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// the start of the string. The result of this function can be used anywhere 17281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// where the C code specifies const char*. 1739735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *MakeConstantString(const std::string &Str, 1749735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall const std::string &Name="") { 1759735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *ConstStr = CGM.GetAddrOfConstantCString(Str, Name.c_str()); 176a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros); 1779735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 17881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Emits a linkonce_odr string, whose name is the prefix followed by the 17981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// string value. This allows the linker to combine the strings between 18081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// different modules. Used for EH typeinfo names, selector strings, and a 18181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// few other things. 1829735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *ExportUniqueString(const std::string &Str, 1839735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall const std::string prefix) { 1849735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall std::string name = prefix + Str; 1859735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *ConstStr = TheModule.getGlobalVariable(name); 1869735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall if (!ConstStr) { 18794010695f7fce626e41ef045b60def9c912e9ce8Chris Lattner llvm::Constant *value = llvm::ConstantDataArray::getString(VMContext,Str); 1889735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall ConstStr = new llvm::GlobalVariable(TheModule, value->getType(), true, 1899735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::GlobalValue::LinkOnceODRLinkage, value, prefix + Str); 1909735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 191a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros); 1929735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 19381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a global structure, initialized by the elements in the vector. 19481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The element types must match the types of the structure elements in the 19581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// first argument. 1962acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::GlobalVariable *MakeGlobal(llvm::StructType *Ty, 197917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ArrayRef<llvm::Constant*> V, 1985f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef Name="", 1999735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::GlobalValue::LinkageTypes linkage 2009735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall =llvm::GlobalValue::InternalLinkage) { 2019735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *C = llvm::ConstantStruct::get(Ty, V); 2029735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return new llvm::GlobalVariable(TheModule, Ty, false, 2039735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall linkage, C, Name); 2049735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 20581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a global array. The vector must contain the same number of 20681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// elements that the array type declares, of the type specified as the array 20781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// element type. 2082acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::GlobalVariable *MakeGlobal(llvm::ArrayType *Ty, 209917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ArrayRef<llvm::Constant*> V, 2105f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef Name="", 2119735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::GlobalValue::LinkageTypes linkage 2129735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall =llvm::GlobalValue::InternalLinkage) { 2139735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *C = llvm::ConstantArray::get(Ty, V); 2149735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return new llvm::GlobalVariable(TheModule, Ty, false, 2159735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall linkage, C, Name); 2169735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 21781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a global array, inferring the array type from the specified 21881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// element type and the size of the initialiser. 2192acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::GlobalVariable *MakeGlobalArray(llvm::Type *Ty, 220917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ArrayRef<llvm::Constant*> V, 2215f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef Name="", 2229735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::GlobalValue::LinkageTypes linkage 2239735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall =llvm::GlobalValue::InternalLinkage) { 2249735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::ArrayType *ArrayTy = llvm::ArrayType::get(Ty, V.size()); 2259735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return MakeGlobal(ArrayTy, V, Name, linkage); 2269735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 22781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Ensures that the value has the required type, by inserting a bitcast if 22881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// required. This function lets us avoid inserting bitcasts that are 22981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// redundant. 2302acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Value* EnforceType(CGBuilderTy B, llvm::Value *V, llvm::Type *Ty){ 231c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall if (V->getType() == Ty) return V; 232c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return B.CreateBitCast(V, Ty); 233c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 234c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Some zeros used for GEPs in lots of places. 235c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Constant *Zeros[2]; 23681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Null pointer value. Mainly used as a terminator in various arrays. 237c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Constant *NULLPtr; 23881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM context. 239c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::LLVMContext &VMContext; 240c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnallprivate: 24181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Placeholder for the class. Lots of things refer to the class before we've 24281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// actually emitted it. We use this alias as a placeholder, and then replace 24381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// it with a pointer to the class structure before finally emitting the 24481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// module. 2455efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *ClassPtrAlias; 24681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Placeholder for the metaclass. Lots of things refer to the class before 24781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// we've / actually emitted it. We use this alias as a placeholder, and then 24881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// replace / it with a pointer to the metaclass structure before finally 24981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// emitting the / module. 2505efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *MetaClassPtrAlias; 25181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the classes that have been generated for this compilation units. 25220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Classes; 25381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the categories that have been generated for this compilation units. 25420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Categories; 25581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the Objective-C constant strings that have been generated for this 25681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// compilation units. 25720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> ConstantStrings; 25881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Map from string values to Objective-C constant strings in the output. 25981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Used to prevent emitting Objective-C strings more than once. This should 26081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// not be required at all - CodeGenModule should manage this list. 26148272a078e54d501cb05edd797c54b8e82ceb520David Chisnall llvm::StringMap<llvm::Constant*> ObjCStrings; 26281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the protocols that have been declared. 26320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StringMap<llvm::Constant*> ExistingProtocols; 26481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// For each variant of a selector, we store the type encoding and a 26581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// placeholder value. For an untyped selector, the type will be the empty 26681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// string. Selector references are all done via the module's selector table, 26781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// so we create an alias as a placeholder and then replace it with the real 26881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// value later. 2699f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall typedef std::pair<std::string, llvm::GlobalAlias*> TypedSelector; 27081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Type of the selector map. This is roughly equivalent to the structure 27181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used in the GNUstep runtime, which maintains a list of all of the valid 27281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// types for a selector in a table. 2735f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner typedef llvm::DenseMap<Selector, SmallVector<TypedSelector, 2> > 2749f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorMap; 27581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// A map from selectors to selector types. This allows us to emit all 27681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// selectors of the same name and type together. 2779f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorMap SelectorTable; 2789f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 27981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Selectors related to memory management. When compiling in GC mode, we 28081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// omit these. 281ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Selector RetainSel, ReleaseSel, AutoreleaseSel; 28281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Runtime functions used for memory management in GC mode. Note that clang 28381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// supports code generation for calling these functions, but neither GNU 28481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// runtime actually supports this API properly yet. 2859f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction IvarAssignFn, StrongCastAssignFn, MemMoveFn, WeakReadFn, 2869f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall WeakAssignFn, GlobalAssignFn; 2879f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 28829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall typedef std::pair<std::string, std::string> ClassAliasPair; 28929254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall /// All classes that have aliases set for them. 29029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall std::vector<ClassAliasPair> ClassAliases; 29129254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 2929735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnallprotected: 29381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function used for throwing Objective-C exceptions. 2949f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction ExceptionThrowFn; 29581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function used for rethrowing exceptions, used at the end of @finally or 29681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// @synchronize blocks. 2979735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall LazyRuntimeFunction ExceptionReThrowFn; 29881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function called when entering a catch function. This is required for 29981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// differentiating Objective-C exceptions and foreign exceptions. 3009735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall LazyRuntimeFunction EnterCatchFn; 30181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function called when exiting from a catch block. Used to do exception 30281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// cleanup. 3039735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall LazyRuntimeFunction ExitCatchFn; 30481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function called when entering an @synchronize block. Acquires the lock. 3059f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SyncEnterFn; 30681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function called when exiting an @synchronize block. Releases the lock. 3079f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SyncExitFn; 3089f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 3099735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnallprivate: 3109735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall 31181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function called if fast enumeration detects that the collection is 31281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// modified during the update. 3139f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction EnumerationMutationFn; 31481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function for implementing synthesized property getters that return an 31581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// object. 3169f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction GetPropertyFn; 31781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function for implementing synthesized property setters that return an 31881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// object. 3199f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SetPropertyFn; 32081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function used for non-object declared property getters. 3219f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction GetStructPropertyFn; 32281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function used for non-object declared property setters. 3239f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SetStructPropertyFn; 3249f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 32581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The version of the runtime that this class targets. Must match the 32681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// version in the runtime. 327a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall int RuntimeVersion; 32881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The version of the protocol class. Used to differentiate between ObjC1 32981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// and ObjC2 protocols. Objective-C 1 protocols can not contain optional 33081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// components and can not contain declared properties. We always emit 33181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Objective-C 2 property structures, but we have to pretend that they're 33281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Objective-C 1 property structures when targeting the GCC runtime or it 33381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// will abort. 3349f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const int ProtocolVersion; 33520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovprivate: 33681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates an instance variable list structure. This is a structure 33781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// containing a size and an array of structures containing instance variable 33881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// metadata. This is used purely for introspection in the fragile ABI. In 33981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// the non-fragile ABI, it's used for instance variable fixup. 340795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling llvm::Constant *GenerateIvarList(ArrayRef<llvm::Constant *> IvarNames, 341795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> IvarTypes, 342795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> IvarOffsets); 34381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a method list structure. This is a structure containing a size 34481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// and an array of structures containing method metadata. 34581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// 34681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// This structure is used by both classes and categories, and contains a next 34781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// pointer allowing them to be chained together in a linked list. 3485f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner llvm::Constant *GenerateMethodList(const StringRef &ClassName, 3495f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const StringRef &CategoryName, 350795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<Selector> MethodSels, 351795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> MethodTypes, 35220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList); 35381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Emits an empty protocol. This is used for @protocol() where no protocol 35481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// is found. The runtime will (hopefully) fix up the pointer to refer to the 35581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// real protocol. 356f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *GenerateEmptyProtocol(const std::string &ProtocolName); 35781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a list of property metadata structures. This follows the same 35881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// pattern as method and instance variable metadata lists. 359d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *GeneratePropertyList(const ObjCImplementationDecl *OID, 3605f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<Selector> &InstanceMethodSels, 3615f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<llvm::Constant*> &InstanceMethodTypes); 36281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a list of referenced protocols. Classes, categories, and 36381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// protocols all use this structure. 364795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling llvm::Constant *GenerateProtocolList(ArrayRef<std::string> Protocols); 36581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// To ensure that all protocols are seen by the runtime, we add a category on 36681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// a class defined in the runtime, declaring no methods, but adopting the 36781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// protocols. This is a horribly ugly hack, but it allows us to collect all 36881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// of the protocols without changing the ABI. 369d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian void GenerateProtocolHolderCategory(void); 37081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a class structure. 37120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateClassStructure( 37220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 37320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 37420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 375d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 37620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 37720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 37820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 37920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 380d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Protocols, 381d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *IvarOffsets, 3828c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall llvm::Constant *Properties, 383917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *StrongIvarBitmap, 384917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *WeakIvarBitmap, 3858c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall bool isMeta=false); 38681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a method list. This is used by protocols to define the required 38781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// and optional methods. 38820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolMethodList( 389795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> MethodNames, 390795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> MethodTypes); 39181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Returns a selector with the specified type encoding. An empty string is 39281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used to return an untyped selector (with the types field set to NULL). 3939f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Value *GetSelector(CGBuilderTy &Builder, Selector Sel, 3949f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const std::string &TypeEncoding, bool lval); 39581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Returns the variable used to store the offset of an instance variable. 3969cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::GlobalVariable *ObjCIvarOffsetVariable(const ObjCInterfaceDecl *ID, 3979cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar); 39881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Emits a reference to a class. This allows the linker to object if there 39981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// is no class of the matching name. 4002a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner void EmitClassRef(const std::string &className); 401c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall /// Emits a pointer to the named class 402d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall llvm::Value *GetClassNamed(CGBuilderTy &Builder, const std::string &Name, 403d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall bool isWeak); 404c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnallprotected: 40581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Looks up the method for sending a message to the specified object. This 40681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// mechanism differs between the GCC and GNU runtimes, so this method must be 40781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// overridden in subclasses. 408c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMP(CodeGenFunction &CGF, 409c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *&Receiver, 410c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd, 411c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDNode *node) = 0; 412917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// Looks up the method for sending a message to a superclass. This 413917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// mechanism differs between the GCC and GNU runtimes, so this method must 414917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// be overridden in subclasses. 415c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMPSuper(CodeGenFunction &CGF, 416c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ObjCSuper, 417c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd) = 0; 418917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// Libobjc2 uses a bitfield representation where small(ish) bitfields are 419917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// stored in a 64-bit value with the low bit set to 1 and the remaining 63 420917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// bits set to their values, LSB first, while larger ones are stored in a 421917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// structure of this / form: 422917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// 423917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// struct { int32_t length; int32_t values[length]; }; 424917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// 425917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// The values in the array are stored in host-endian format, with the least 426917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// significant bit being assumed to come first in the bitfield. Therefore, 427917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// a bitfield with the 64th bit set will be (int64_t)&{ 2, [0, 1<<31] }, 428917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// while a bitfield / with the 63rd bit set will be 1<<64. 429795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling llvm::Constant *MakeBitField(ArrayRef<bool> bits); 4300f984268b05edab2cc555a427c441baa9c252658Chris Lattnerpublic: 4319f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CGObjCGNU(CodeGenModule &cgm, unsigned runtimeABIVersion, 4329f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall unsigned protocolClassVersion); 4339f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 4340d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall virtual llvm::Constant *GenerateConstantString(const StringLiteral *); 4359f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 4369f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual RValue 4379f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GenerateMessageSend(CodeGenFunction &CGF, 438ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 4397f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 4407f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 441f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 442df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 443c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall const ObjCInterfaceDecl *Class, 444df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method); 4459f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual RValue 4469f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GenerateMessageSendSuper(CodeGenFunction &CGF, 447ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 4487f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 4497f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 450f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 4517ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 452f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 45319cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 454d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const CallArgList &CallArgs, 455d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const ObjCMethodDecl *Method); 45645d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GetClass(CGBuilderTy &Builder, 457ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar const ObjCInterfaceDecl *OID); 45803b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanian virtual llvm::Value *GetSelector(CGBuilderTy &Builder, Selector Sel, 45903b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanian bool lval = false); 4606d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar virtual llvm::Value *GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 4616d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar *Method); 462cf5abc7ba032bd35158e4d75b0bc92a482fc67e8Fariborz Jahanian virtual llvm::Constant *GetEHType(QualType T); 4631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump virtual llvm::Function *GenerateMethod(const ObjCMethodDecl *OMD, 465679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian const ObjCContainerDecl *CD); 4667ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateCategory(const ObjCCategoryImplDecl *CMD); 4677ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateClass(const ObjCImplementationDecl *ClassDecl); 46829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall virtual void RegisterAlias(const ObjCCompatibleAliasDecl *OAD); 46945d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GenerateProtocolRef(CGBuilderTy &Builder, 470af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD); 471af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar virtual void GenerateProtocol(const ObjCProtocolDecl *PD); 47220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual llvm::Function *ModuleInitFunction(); 473789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetPropertyGetFunction(); 474789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetPropertySetFunction(); 475ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek virtual llvm::Constant *GetOptimizedPropertySetFunction(bool atomic, 476ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool copy); 477789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetSetStructFunction(); 478e3173021fa3bfdf7e6759d67838e385a83b2d57eFariborz Jahanian virtual llvm::Constant *GetCppAtomicObjectFunction(); 479789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetGetStructFunction(); 480309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar virtual llvm::Constant *EnumerationMutationFunction(); 4811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4829f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitTryStmt(CodeGenFunction &CGF, 483f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtTryStmt &S); 4849f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitSynchronizedStmt(CodeGenFunction &CGF, 485f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtSynchronizedStmt &S); 4869f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitThrowStmt(CodeGenFunction &CGF, 48764d5d6c5903157c521af496479d06dc26032d718Anders Carlsson const ObjCAtThrowStmt &S); 4889f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual llvm::Value * EmitObjCWeakRead(CodeGenFunction &CGF, 4896dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian llvm::Value *AddrWeakObj); 4909f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCWeakAssign(CodeGenFunction &CGF, 4913e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian llvm::Value *src, llvm::Value *dst); 4929f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCGlobalAssign(CodeGenFunction &CGF, 493021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian llvm::Value *src, llvm::Value *dest, 494021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian bool threadlocal=false); 4959f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCIvarAssign(CodeGenFunction &CGF, 4966c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *src, llvm::Value *dest, 4976c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *ivarOffset); 4989f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCStrongCastAssign(CodeGenFunction &CGF, 49958626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dest); 5009f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitGCMemmoveCollectable(CodeGenFunction &CGF, 5011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *DestPtr, 502082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *SrcPtr, 50355bcace250e1ff366e4482714b344b8cbc8be5f3Fariborz Jahanian llvm::Value *Size); 5049f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual LValue EmitObjCValueForIvar(CodeGenFunction &CGF, 505598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 506598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 507598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 508598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers); 5099f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual llvm::Value *EmitIvarOffset(CodeGenFunction &CGF, 5102a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 511f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar); 512c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall virtual llvm::Value *EmitNSAutoreleasePoolClassRef(CGBuilderTy &Builder); 5139f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual llvm::Constant *BuildGCBlockLayout(CodeGenModule &CGM, 5146b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall const CGBlockInfo &blockInfo) { 51589ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian return NULLPtr; 51689ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian } 5176f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian 5186f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian virtual llvm::GlobalVariable *GetClassGlobal(const std::string &Name) { 5196f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian return 0; 5206f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian } 5210f984268b05edab2cc555a427c441baa9c252658Chris Lattner}; 52281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// Class representing the legacy GCC Objective-C ABI. This is the default when 52381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// -fobjc-nonfragile-abi is not specified. 52481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// 52581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// The GCC ABI target actually generates code that is approximately compatible 52681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// with the new GNUstep runtime ABI, but refrains from using any features that 52781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// would not work with the GCC runtime. For example, clang always generates 52881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// the extended form of the class structure, and the extra fields are simply 52981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// ignored by GCC libobjc. 5309f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass CGObjCGCC : public CGObjCGNU { 53181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The GCC ABI message lookup function. Returns an IMP pointing to the 53281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// method implementation for this message. 533c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction MsgLookupFn; 53481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The GCC ABI superclass message lookup function. Takes a pointer to a 53581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// structure describing the receiver and the class, and a selector as 53681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// arguments. Returns the IMP for the corresponding method. 537c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction MsgLookupSuperFn; 538c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnallprotected: 539c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMP(CodeGenFunction &CGF, 540c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *&Receiver, 541c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd, 542c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDNode *node) { 543c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 5446f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall llvm::Value *args[] = { 545c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall EnforceType(Builder, Receiver, IdTy), 5466f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall EnforceType(Builder, cmd, SelectorTy) }; 5476f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall llvm::CallSite imp = CGF.EmitCallOrInvoke(MsgLookupFn, args); 5486f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall imp->setMetadata(msgSendMDKind, node); 5496f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall return imp.getInstruction(); 550c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 551c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMPSuper(CodeGenFunction &CGF, 552c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ObjCSuper, 553c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd) { 554c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 555c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *lookupArgs[] = {EnforceType(Builder, ObjCSuper, 556c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy), cmd}; 5574c7d9f1507d0f102bd4133bba63348636facd469Jay Foad return Builder.CreateCall(MsgLookupSuperFn, lookupArgs); 558c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 5599f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall public: 560c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGObjCGCC(CodeGenModule &Mod) : CGObjCGNU(Mod, 8, 2) { 561c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // IMP objc_msg_lookup(id, SEL); 562c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall MsgLookupFn.init(&CGM, "objc_msg_lookup", IMPTy, IdTy, SelectorTy, NULL); 563c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // IMP objc_msg_lookup_super(struct objc_super*, SEL); 564c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall MsgLookupSuperFn.init(&CGM, "objc_msg_lookup_super", IMPTy, 565c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy, SelectorTy, NULL); 566c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 5679f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall}; 56881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// Class used when targeting the new GNUstep runtime ABI. 5699f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass CGObjCGNUstep : public CGObjCGNU { 57081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The slot lookup function. Returns a pointer to a cacheable structure 57181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// that contains (among other things) the IMP. 572c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction SlotLookupFn; 57381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The GNUstep ABI superclass message lookup function. Takes a pointer to 57481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// a structure describing the receiver and the class, and a selector as 57581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// arguments. Returns the slot for the corresponding method. Superclass 57681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// message lookup rarely changes, so this is a good caching opportunity. 577c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction SlotLookupSuperFn; 57881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Type of an slot structure pointer. This is returned by the various 57981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// lookup functions. 580c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Type *SlotTy; 581c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall protected: 582c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMP(CodeGenFunction &CGF, 583c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *&Receiver, 584c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd, 585c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDNode *node) { 586c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 587c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Function *LookupFn = SlotLookupFn; 588c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 589c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Store the receiver on the stack so that we can reload it later 590c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ReceiverPtr = CGF.CreateTempAlloca(Receiver->getType()); 591c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Builder.CreateStore(Receiver, ReceiverPtr); 592c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 593c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *self; 594c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 595c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall if (isa<ObjCMethodDecl>(CGF.CurCodeDecl)) { 596c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall self = CGF.LoadObjCSelf(); 597c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } else { 598c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall self = llvm::ConstantPointerNull::get(IdTy); 599c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 600c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 601c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // The lookup function is guaranteed not to capture the receiver pointer. 602c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LookupFn->setDoesNotCapture(1); 603c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 6046f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall llvm::Value *args[] = { 605c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall EnforceType(Builder, ReceiverPtr, PtrToIdTy), 606c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall EnforceType(Builder, cmd, SelectorTy), 6076f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall EnforceType(Builder, self, IdTy) }; 6086f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall llvm::CallSite slot = CGF.EmitCallOrInvoke(LookupFn, args); 6096f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall slot.setOnlyReadsMemory(); 610c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall slot->setMetadata(msgSendMDKind, node); 611c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 612c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Load the imp from the slot 6136f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall llvm::Value *imp = 6146f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall Builder.CreateLoad(Builder.CreateStructGEP(slot.getInstruction(), 4)); 615c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 616c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // The lookup function may have changed the receiver, so make sure we use 617c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // the new one. 618c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Receiver = Builder.CreateLoad(ReceiverPtr, true); 619c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return imp; 620c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 621c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMPSuper(CodeGenFunction &CGF, 622c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ObjCSuper, 623c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd) { 624c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 625c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *lookupArgs[] = {ObjCSuper, cmd}; 626c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 6274c7d9f1507d0f102bd4133bba63348636facd469Jay Foad llvm::CallInst *slot = Builder.CreateCall(SlotLookupSuperFn, lookupArgs); 628c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall slot->setOnlyReadsMemory(); 629c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 630c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return Builder.CreateLoad(Builder.CreateStructGEP(slot, 4)); 631c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 6329f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall public: 633c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGObjCGNUstep(CodeGenModule &Mod) : CGObjCGNU(Mod, 9, 3) { 6347650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *SlotStructTy = llvm::StructType::get(PtrTy, 635c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrTy, PtrTy, IntTy, IMPTy, NULL); 636c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SlotTy = llvm::PointerType::getUnqual(SlotStructTy); 637c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Slot_t objc_msg_lookup_sender(id *receiver, SEL selector, id sender); 638c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SlotLookupFn.init(&CGM, "objc_msg_lookup_sender", SlotTy, PtrToIdTy, 639c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SelectorTy, IdTy, NULL); 640c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Slot_t objc_msg_lookup_super(struct objc_super*, SEL); 641c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SlotLookupSuperFn.init(&CGM, "objc_slot_lookup_super", SlotTy, 642c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy, SelectorTy, NULL); 6439735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // If we're in ObjC++ mode, then we want to make 6444e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (CGM.getLangOpts().CPlusPlus) { 6459cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext); 6469735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // void *__cxa_begin_catch(void *e) 6479735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall EnterCatchFn.init(&CGM, "__cxa_begin_catch", PtrTy, PtrTy, NULL); 6489735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // void __cxa_end_catch(void) 6494bd5d09e3a233ed23ec6f913166e4b75d8de215cDavid Chisnall ExitCatchFn.init(&CGM, "__cxa_end_catch", VoidTy, NULL); 6509735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // void _Unwind_Resume_or_Rethrow(void*) 651978d415adab4ef423f5aef430ddfdbefc4cfb000David Chisnall ExceptionReThrowFn.init(&CGM, "_Unwind_Resume_or_Rethrow", VoidTy, PtrTy, NULL); 6529735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 653c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 6549f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall}; 6559f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 6560f984268b05edab2cc555a427c441baa9c252658Chris Lattner} // end anonymous namespace 6570f984268b05edab2cc555a427c441baa9c252658Chris Lattner 65820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 6592a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// Emits a reference to a dummy variable which is emitted with each class. 6602a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// This ensures that a linker error will be generated when trying to link 6612a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// together modules where a referenced class is not defined. 662bb1c8600218b3244340331165fc7cba7bf227655Mike Stumpvoid CGObjCGNU::EmitClassRef(const std::string &className) { 6632a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner std::string symbolRef = "__objc_class_ref_" + className; 6642a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // Don't emit two copies of the same symbol 665bb1c8600218b3244340331165fc7cba7bf227655Mike Stump if (TheModule.getGlobalVariable(symbolRef)) 666bb1c8600218b3244340331165fc7cba7bf227655Mike Stump return; 6672a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner std::string symbolName = "__objc_class_name_" + className; 6682a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner llvm::GlobalVariable *ClassSymbol = TheModule.getGlobalVariable(symbolName); 6692a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (!ClassSymbol) { 6701c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson ClassSymbol = new llvm::GlobalVariable(TheModule, LongTy, false, 6711c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::GlobalValue::ExternalLinkage, 0, symbolName); 6722a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 6731c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, ClassSymbol->getType(), true, 674f35271b8677a5f31498b89587b1da42a06dd46fdChris Lattner llvm::GlobalValue::WeakAnyLinkage, ClassSymbol, symbolRef); 6752a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner} 67620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 6775f9e272e632e951b1efe824cd16acb4d96077930Chris Lattnerstatic std::string SymbolNameForMethod(const StringRef &ClassName, 6785f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const StringRef &CategoryName, const Selector MethodName, 6799f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall bool isClassMethod) { 6809f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string MethodNameColonStripped = MethodName.getAsString(); 681d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall std::replace(MethodNameColonStripped.begin(), MethodNameColonStripped.end(), 682d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall ':', '_'); 6835f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner return (Twine(isClassMethod ? "_c_" : "_i_") + ClassName + "_" + 6849f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CategoryName + "_" + MethodNameColonStripped).str(); 68587935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall} 68620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 6879f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCGNU::CGObjCGNU(CodeGenModule &cgm, unsigned runtimeABIVersion, 6889f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall unsigned protocolClassVersion) 689de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall : CGObjCRuntime(cgm), TheModule(CGM.getModule()), 690de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall VMContext(cgm.getLLVMContext()), ClassPtrAlias(0), MetaClassPtrAlias(0), 691de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall RuntimeVersion(runtimeABIVersion), ProtocolVersion(protocolClassVersion) { 692c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall 693c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall msgSendMDKind = VMContext.getMDKindID("GNUObjCMessageSend"); 694c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall 6959f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CodeGenTypes &Types = CGM.getTypes(); 696e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner IntTy = cast<llvm::IntegerType>( 6979f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().IntTy)); 698e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner LongTy = cast<llvm::IntegerType>( 6999f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().LongTy)); 7008fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall SizeTy = cast<llvm::IntegerType>( 7019f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().getSizeType())); 7028fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall PtrDiffTy = cast<llvm::IntegerType>( 7039f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().getPointerDiffType())); 7048fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall BoolTy = CGM.getTypes().ConvertType(CGM.getContext().BoolTy); 7051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 706d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Int8Ty = llvm::Type::getInt8Ty(VMContext); 707d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // C string type. Used in lots of places. 708d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty = llvm::PointerType::getUnqual(Int8Ty); 709d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 7104a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Zeros[0] = llvm::ConstantInt::get(LongTy, 0); 71120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros[1] = Zeros[0]; 712d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NULLPtr = llvm::ConstantPointerNull::get(PtrToInt8Ty); 713391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Get the selector Type. 7140d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall QualType selTy = CGM.getContext().getObjCSelType(); 7150d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall if (QualType() == selTy) { 7160d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall SelectorTy = PtrToInt8Ty; 7170d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } else { 7180d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall SelectorTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(selTy)); 7190d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } 720e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 72196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson PtrToIntTy = llvm::PointerType::getUnqual(IntTy); 722391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrTy = PtrToInt8Ty; 7231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 724917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Int32Ty = llvm::Type::getInt32Ty(VMContext); 725917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Int64Ty = llvm::Type::getInt64Ty(VMContext); 726917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall 72749de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall IntPtrTy = 72849de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall TheModule.getPointerSize() == llvm::Module::Pointer32 ? Int32Ty : Int64Ty; 72949de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall 730391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Object type 7317bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall QualType UnqualIdTy = CGM.getContext().getObjCIdType(); 7327bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall ASTIdTy = CanQualType(); 7337bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall if (UnqualIdTy != QualType()) { 7347bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall ASTIdTy = CGM.getContext().getCanonicalType(UnqualIdTy); 7350d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall IdTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(ASTIdTy)); 7367bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall } else { 7377bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall IdTy = PtrToInt8Ty; 7380d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } 739ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall PtrToIdTy = llvm::PointerType::getUnqual(IdTy); 7401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7417650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner ObjCSuperTy = llvm::StructType::get(IdTy, IdTy, NULL); 742c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy = llvm::PointerType::getUnqual(ObjCSuperTy); 743c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 7449cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext); 7459f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 7469f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_exception_throw(id); 7479f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ExceptionThrowFn.init(&CGM, "objc_exception_throw", VoidTy, IdTy, NULL); 7489735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall ExceptionReThrowFn.init(&CGM, "objc_exception_throw", VoidTy, IdTy, NULL); 7499f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // int objc_sync_enter(id); 7509f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SyncEnterFn.init(&CGM, "objc_sync_enter", IntTy, IdTy, NULL); 7519f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // int objc_sync_exit(id); 7529f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SyncExitFn.init(&CGM, "objc_sync_exit", IntTy, IdTy, NULL); 7539f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 7549f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_enumerationMutation (id) 7559f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall EnumerationMutationFn.init(&CGM, "objc_enumerationMutation", VoidTy, 7569f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall IdTy, NULL); 7579f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 7589f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // id objc_getProperty(id, SEL, ptrdiff_t, BOOL) 7599f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GetPropertyFn.init(&CGM, "objc_getProperty", IdTy, IdTy, SelectorTy, 7609f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, BoolTy, NULL); 7619f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_setProperty(id, SEL, ptrdiff_t, id, BOOL, BOOL) 7629f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SetPropertyFn.init(&CGM, "objc_setProperty", VoidTy, IdTy, SelectorTy, 7639f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, IdTy, BoolTy, BoolTy, NULL); 7649f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_setPropertyStruct(void*, void*, ptrdiff_t, BOOL, BOOL) 7659f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GetStructPropertyFn.init(&CGM, "objc_getPropertyStruct", VoidTy, PtrTy, PtrTy, 7669f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, BoolTy, BoolTy, NULL); 7679f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_setPropertyStruct(void*, void*, ptrdiff_t, BOOL, BOOL) 7689f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SetStructPropertyFn.init(&CGM, "objc_setPropertyStruct", VoidTy, PtrTy, PtrTy, 7699f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, BoolTy, BoolTy, NULL); 7709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 771391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // IMP type 7729cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *IMPArgs[] = { IdTy, SelectorTy }; 773c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall IMPTy = llvm::PointerType::getUnqual(llvm::FunctionType::get(IdTy, IMPArgs, 774c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall true)); 775ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 7764e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie const LangOptions &Opts = CGM.getLangOpts(); 777e289d81369914678db386f6aa86faf8f178e245dDouglas Gregor if ((Opts.getGC() != LangOptions::NonGC) || Opts.ObjCAutoRefCount) 778f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall RuntimeVersion = 10; 779f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall 7809735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // Don't bother initialising the GC stuff unless we're compiling in GC mode 781e289d81369914678db386f6aa86faf8f178e245dDouglas Gregor if (Opts.getGC() != LangOptions::NonGC) { 782a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall // This is a bit of an hack. We should sort this out by having a proper 783a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall // CGObjCGNUstep subclass for GC, but we may want to really support the old 784a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall // ABI and GC added in ObjectiveC2.framework, so we fudge it a bit for now 785ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // Get selectors needed in GC mode 786ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall RetainSel = GetNullarySelector("retain", CGM.getContext()); 787ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall ReleaseSel = GetNullarySelector("release", CGM.getContext()); 788ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall AutoreleaseSel = GetNullarySelector("autorelease", CGM.getContext()); 789ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 790ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // Get functions needed in GC mode 791ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 792ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_ivar(id, id, ptrdiff_t); 7939f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall IvarAssignFn.init(&CGM, "objc_assign_ivar", IdTy, IdTy, IdTy, PtrDiffTy, 7949f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall NULL); 795ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_strongCast (id, id*) 7969f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall StrongCastAssignFn.init(&CGM, "objc_assign_strongCast", IdTy, IdTy, 7979f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrToIdTy, NULL); 798ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_global(id, id*); 7999f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GlobalAssignFn.init(&CGM, "objc_assign_global", IdTy, IdTy, PtrToIdTy, 8009f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall NULL); 801ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_weak(id, id*); 8029f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall WeakAssignFn.init(&CGM, "objc_assign_weak", IdTy, IdTy, PtrToIdTy, NULL); 803ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_read_weak(id*); 8049f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall WeakReadFn.init(&CGM, "objc_read_weak", IdTy, PtrToIdTy, NULL); 805ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // void *objc_memmove_collectable(void*, void *, size_t); 8069f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall MemMoveFn.init(&CGM, "objc_memmove_collectable", PtrTy, PtrTy, PtrTy, 8079f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SizeTy, NULL); 808ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 80920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 810bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 811c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnallllvm::Value *CGObjCGNU::GetClassNamed(CGBuilderTy &Builder, 812d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall const std::string &Name, 813d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall bool isWeak) { 814c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall llvm::Value *ClassName = CGM.GetAddrOfConstantCString(Name); 81541d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // With the incompatible ABI, this will need to be replaced with a direct 81641d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // reference to the class symbol. For the compatible nonfragile ABI we are 81741d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // still performing this lookup at run time but emitting the symbol for the 81841d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // class externally so that we can make the switch later. 819c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall // 820c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall // Libobjc2 contains an LLVM pass that replaces calls to objc_lookup_class 821c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall // with memoized versions or with static references if it's safe to do so. 822d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall if (!isWeak) 823d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall EmitClassRef(Name); 824ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar ClassName = Builder.CreateStructGEP(ClassName, 0); 825ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar 82620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassLookupFn = 827da549e8995c447542d5631b8b67fcc3a9582797aJay Foad CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, PtrToInt8Ty, true), 82826c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_lookup_class"); 82920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return Builder.CreateCall(ClassLookupFn, ClassName); 830391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 831391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 832c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall// This has to perform the lookup every time, since posing and related 833c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall// techniques can modify the name -> class mapping. 834c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnallllvm::Value *CGObjCGNU::GetClass(CGBuilderTy &Builder, 835c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall const ObjCInterfaceDecl *OID) { 836d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall return GetClassNamed(Builder, OID->getNameAsString(), OID->isWeakImported()); 837c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall} 838c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnallllvm::Value *CGObjCGNU::EmitNSAutoreleasePoolClassRef(CGBuilderTy &Builder) { 839d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall return GetClassNamed(Builder, "NSAutoreleasePool", false); 840c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall} 841c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall 84203b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanianllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, Selector Sel, 8439f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const std::string &TypeEncoding, bool lval) { 8449f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 8455f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<TypedSelector, 2> &Types = SelectorTable[Sel]; 8469f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::GlobalAlias *SelValue = 0; 8479f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 8489f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 8495f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner for (SmallVectorImpl<TypedSelector>::iterator i = Types.begin(), 8509f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall e = Types.end() ; i!=e ; i++) { 8519f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (i->first == TypeEncoding) { 8529f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelValue = i->second; 8539f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall break; 8549f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 8559f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 8569f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (0 == SelValue) { 857c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SelValue = new llvm::GlobalAlias(SelectorTy, 8589f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::GlobalValue::PrivateLinkage, 8599f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ".objc_selector_"+Sel.getAsString(), NULL, 8609f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall &TheModule); 8619f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.push_back(TypedSelector(TypeEncoding, SelValue)); 8629f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 8639f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 864c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall if (lval) { 865c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *tmp = Builder.CreateAlloca(SelValue->getType()); 866c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Builder.CreateStore(SelValue, tmp); 867c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return tmp; 868c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 869c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return SelValue; 8709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall} 8719f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 8729f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, Selector Sel, 8739f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall bool lval) { 8749f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return GetSelector(Builder, Sel, std::string(), lval); 875df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian} 876df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 8776d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbarllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 878df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian *Method) { 879df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian std::string SelTypes; 880df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian CGM.getContext().getObjCEncodingForMethodDecl(Method, SelTypes); 8819f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return GetSelector(Builder, Method->getSelector(), SelTypes, false); 8828e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner} 8838e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 884cf5abc7ba032bd35158e4d75b0bc92a482fc67e8Fariborz Jahanianllvm::Constant *CGObjCGNU::GetEHType(QualType T) { 8854e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!CGM.getLangOpts().CPlusPlus) { 8869735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall if (T->isObjCIdType() 8879735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall || T->isObjCQualifiedIdType()) { 8889735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // With the old ABI, there was only one kind of catchall, which broke 8899735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // foreign exceptions. With the new ABI, we use __objc_id_typeinfo as 8909735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // a pointer indicating object catchalls, and NULL to indicate real 8919735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // catchalls 8924e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (CGM.getLangOpts().ObjCNonFragileABI) { 8939735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return MakeConstantString("@id"); 8949735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } else { 8959735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return 0; 8969735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 8979735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 8989735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall 8999735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // All other types should be Objective-C interface pointer types. 9009735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall const ObjCObjectPointerType *OPT = 9019735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall T->getAs<ObjCObjectPointerType>(); 9029735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall assert(OPT && "Invalid @catch type."); 9039735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall const ObjCInterfaceDecl *IDecl = 9049735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall OPT->getObjectType()->getInterface(); 9059735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall assert(IDecl && "Invalid @catch type."); 9069735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return MakeConstantString(IDecl->getIdentifier()->getName()); 9079735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 90880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // For Objective-C++, we want to provide the ability to catch both C++ and 90980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // Objective-C objects in the same function. 91080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 91180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // There's a particular fixed type info for 'id'. 91280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall if (T->isObjCIdType() || 91380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall T->isObjCQualifiedIdType()) { 91480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *IDEHType = 91580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall CGM.getModule().getGlobalVariable("__objc_id_type_info"); 91680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall if (!IDEHType) 91780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall IDEHType = 91880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall new llvm::GlobalVariable(CGM.getModule(), PtrToInt8Ty, 91980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall false, 92080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::GlobalValue::ExternalLinkage, 92180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 0, "__objc_id_type_info"); 92280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall return llvm::ConstantExpr::getBitCast(IDEHType, PtrToInt8Ty); 92380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall } 92480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 92580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall const ObjCObjectPointerType *PT = 92680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall T->getAs<ObjCObjectPointerType>(); 92780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall assert(PT && "Invalid @catch type."); 92880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall const ObjCInterfaceType *IT = PT->getInterfaceType(); 92980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall assert(IT && "Invalid @catch type."); 93080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall std::string className = IT->getDecl()->getIdentifier()->getName(); 93180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 93280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall std::string typeinfoName = "__objc_eh_typeinfo_" + className; 93380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 93480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // Return the existing typeinfo if it exists 93580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *typeinfo = TheModule.getGlobalVariable(typeinfoName); 93680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall if (typeinfo) return typeinfo; 93780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 93880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // Otherwise create it. 93980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 94080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // vtable for gnustep::libobjc::__objc_class_type_info 94180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // It's quite ugly hard-coding this. Ideally we'd generate it using the host 94280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // platform's name mangling. 94380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall const char *vtableName = "_ZTVN7gnustep7libobjc22__objc_class_type_infoE"; 94480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *Vtable = TheModule.getGlobalVariable(vtableName); 94580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall if (!Vtable) { 94680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall Vtable = new llvm::GlobalVariable(TheModule, PtrToInt8Ty, true, 94780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::GlobalValue::ExternalLinkage, 0, vtableName); 94880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall } 94980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *Two = llvm::ConstantInt::get(IntTy, 2); 950a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad Vtable = llvm::ConstantExpr::getGetElementPtr(Vtable, Two); 95180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall Vtable = llvm::ConstantExpr::getBitCast(Vtable, PtrToInt8Ty); 95280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 95380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *typeName = 95480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall ExportUniqueString(className, "__objc_eh_typename_"); 95580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 95680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall std::vector<llvm::Constant*> fields; 95780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall fields.push_back(Vtable); 95880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall fields.push_back(typeName); 95980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *TI = 9607650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner MakeGlobal(llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, 96180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall NULL), fields, "__objc_eh_typeinfo_" + className, 96280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::GlobalValue::LinkOnceODRLinkage); 96380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall return llvm::ConstantExpr::getBitCast(TI, PtrToInt8Ty); 9645a180397870944548aaadeaebf58e415885b9489John McCall} 9655a180397870944548aaadeaebf58e415885b9489John McCall 96620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate an NSConstantString object. 9670d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnallllvm::Constant *CGObjCGNU::GenerateConstantString(const StringLiteral *SL) { 96848272a078e54d501cb05edd797c54b8e82ceb520David Chisnall 9692f4eaef37476ae6891ede8ba215d0f6fd093629bBenjamin Kramer std::string Str = SL->getString().str(); 9700d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall 97148272a078e54d501cb05edd797c54b8e82ceb520David Chisnall // Look for an existing one 97248272a078e54d501cb05edd797c54b8e82ceb520David Chisnall llvm::StringMap<llvm::Constant*>::iterator old = ObjCStrings.find(Str); 97348272a078e54d501cb05edd797c54b8e82ceb520David Chisnall if (old != ObjCStrings.end()) 97448272a078e54d501cb05edd797c54b8e82ceb520David Chisnall return old->getValue(); 97548272a078e54d501cb05edd797c54b8e82ceb520David Chisnall 9764e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie StringRef StringClass = CGM.getLangOpts().ObjCConstantStringClass; 97713df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall 97813df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall if (StringClass.empty()) StringClass = "NXConstantString"; 97913df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall 98013df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall std::string Sym = "_OBJC_CLASS_"; 98113df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall Sym += StringClass; 98213df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall 98313df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::Constant *isa = TheModule.getNamedGlobal(Sym); 98413df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall 98513df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall if (!isa) 98613df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall isa = new llvm::GlobalVariable(TheModule, IdTy, /* isConstant */false, 98713df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::GlobalValue::ExternalWeakLinkage, 0, Sym); 98813df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall else if (isa->getType() != PtrToIdTy) 98913df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall isa = llvm::ConstantExpr::getBitCast(isa, PtrToIdTy); 99013df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall 99120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 99213df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall Ivars.push_back(isa); 99313fd7e5111032f54b538dd66d035b0ccc1f82467Chris Lattner Ivars.push_back(MakeConstantString(Str)); 9944a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Ivars.push_back(llvm::ConstantInt::get(IntTy, Str.size())); 99520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ObjCStr = MakeGlobal( 99613df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::StructType::get(PtrToIdTy, PtrToInt8Ty, IntTy, NULL), 99720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars, ".objc_str"); 99848272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ObjCStr = llvm::ConstantExpr::getBitCast(ObjCStr, PtrToInt8Ty); 99948272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ObjCStrings[Str] = ObjCStr; 100048272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ConstantStrings.push_back(ObjCStr); 100120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return ObjCStr; 100220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 100320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 100420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///Generates a message send where the super is the receiver. This is a message 100520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///send to self with special delivery semantics indicating which class's method 100620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///should be called. 10079f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallRValue 10089f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCGNU::GenerateMessageSendSuper(CodeGenFunction &CGF, 1009ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 10107f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 10117f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 1012f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 10137ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 1014f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 101519cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 1016d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const CallArgList &CallArgs, 1017d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const ObjCMethodDecl *Method) { 10180bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGBuilderTy &Builder = CGF.Builder; 10194e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (CGM.getLangOpts().getGC() == LangOptions::GCOnly) { 1020ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == RetainSel || Sel == AutoreleaseSel) { 10210bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall return RValue::get(EnforceType(Builder, Receiver, 10220bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGM.getTypes().ConvertType(ResultType))); 1023ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1024ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == ReleaseSel) { 1025ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return RValue::get(0); 1026ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1027ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1028db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 1029db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::Value *cmd = GetSelector(Builder, Sel); 1030db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 1031b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1032b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CallArgList ActualArgs; 1033b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 103404c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(EnforceType(Builder, Receiver, IdTy)), ASTIdTy); 103504c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(cmd), CGF.getContext().getObjCSelType()); 1036f85e193739c953358c865005855253af4f68a497John McCall ActualArgs.addFrom(CallArgs); 1037b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1038de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall MessageSendInfo MSI = getMessageSendInfo(Method, ResultType, ActualArgs); 1039b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 10405efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::Value *ReceiverClass = 0; 104148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (isCategoryImpl) { 104248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::Constant *classLookupFunction = 0; 104348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 104496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 1045da549e8995c447542d5631b8b67fcc3a9582797aJay Foad IdTy, PtrTy, true), "objc_get_meta_class"); 104648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 104796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 1048da549e8995c447542d5631b8b67fcc3a9582797aJay Foad IdTy, PtrTy, true), "objc_get_class"); 10495efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 1050db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateCall(classLookupFunction, 105148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MakeConstantString(Class->getNameAsString())); 10525efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } else { 105348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // Set up global aliases for the metaclass or class pointer if they do not 105448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // already exist. These will are forward-references which will be set to 1055bb1c8600218b3244340331165fc7cba7bf227655Mike Stump // pointers to the class and metaclass structure created for the runtime 1056bb1c8600218b3244340331165fc7cba7bf227655Mike Stump // load function. To send a message to super, we look up the value of the 105748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // super_class pointer from either the class or metaclass structure. 105848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 105948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!MetaClassPtrAlias) { 106048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MetaClassPtrAlias = new llvm::GlobalAlias(IdTy, 106148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_metaclass_ref" + 106248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 106348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 106448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = MetaClassPtrAlias; 106548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 106648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!ClassPtrAlias) { 106748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ClassPtrAlias = new llvm::GlobalAlias(IdTy, 106848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_class_ref" + 106948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 107048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 107148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = ClassPtrAlias; 10725efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 107371238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 10745efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Cast the pointer to a simplified version of the class structure 1075db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateBitCast(ReceiverClass, 107696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual( 10777650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType::get(IdTy, IdTy, NULL))); 10785efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Get the superclass pointer 1079db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateStructGEP(ReceiverClass, 1); 10805efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Load the superclass pointer 1081db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateLoad(ReceiverClass); 108220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Construct the structure used to look up the IMP 10837650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCSuperTy = llvm::StructType::get( 108447a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson Receiver->getType(), IdTy, NULL); 1085db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::Value *ObjCSuper = Builder.CreateAlloca(ObjCSuperTy); 1086b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1087db831948f32217ece8410099f9982ef900c3b3c3David Chisnall Builder.CreateStore(Receiver, Builder.CreateStructGEP(ObjCSuper, 0)); 1088db831948f32217ece8410099f9982ef900c3b3c3David Chisnall Builder.CreateStore(ReceiverClass, Builder.CreateStructGEP(ObjCSuper, 1)); 108920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1090c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall ObjCSuper = EnforceType(Builder, ObjCSuper, PtrToObjCSuperTy); 1091db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 1092c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Get the IMP 1093c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *imp = LookupIMPSuper(CGF, ObjCSuper, cmd); 1094de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall imp = EnforceType(Builder, imp, MSI.MessengerType); 109520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1096dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::Value *impMD[] = { 1097dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::MDString::get(VMContext, Sel.getAsString()), 1098dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::MDString::get(VMContext, Class->getSuperClass()->getNameAsString()), 1099dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::ConstantInt::get(llvm::Type::getInt1Ty(VMContext), IsClassMessage) 1100dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall }; 11016f141659cab11109d9931d92d0988f8850778de3Jay Foad llvm::MDNode *node = llvm::MDNode::get(VMContext, impMD); 1102dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall 11034b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall llvm::Instruction *call; 1104de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall RValue msgRet = CGF.EmitCall(MSI.CallInfo, imp, Return, ActualArgs, 0, &call); 11054b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall call->setMetadata(msgSendMDKind, node); 11064b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall return msgRet; 110720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 110820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 11091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// Generate code for a message send expression. 11109f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallRValue 11119f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCGNU::GenerateMessageSend(CodeGenFunction &CGF, 1112ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 11137f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 11147f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 1115f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 1116df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 1117c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall const ObjCInterfaceDecl *Class, 1118df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method) { 11190bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGBuilderTy &Builder = CGF.Builder; 11200bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall 1121664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // Strip out message sends to retain / release in GC mode 11224e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (CGM.getLangOpts().getGC() == LangOptions::GCOnly) { 1123ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == RetainSel || Sel == AutoreleaseSel) { 11240bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall return RValue::get(EnforceType(Builder, Receiver, 11250bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGM.getTypes().ConvertType(ResultType))); 1126ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1127ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == ReleaseSel) { 1128ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return RValue::get(0); 1129ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1130ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1131664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1132664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // If the return type is something that goes in an integer register, the 1133664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // runtime will handle 0 returns. For other cases, we fill in the 0 value 1134664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // ourselves. 1135664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // 1136664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // The language spec says the result of this kind of message send is 1137664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // undefined, but lots of people seem to have forgotten to read that 1138664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // paragraph and insist on sending messages to nil that have structure 1139664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // returns. With GCC, this generates a random return value (whatever happens 1140664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // to be on the stack / in those registers at the time) on most platforms, 1141c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // and generates an illegal instruction trap on SPARC. With LLVM it corrupts 1142c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // the stack. 1143c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall bool isPointerSizedReturn = (ResultType->isAnyPointerType() || 1144c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall ResultType->isIntegralOrEnumerationType() || ResultType->isVoidType()); 1145664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1146664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::BasicBlock *startBB = 0; 1147664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::BasicBlock *messageBB = 0; 1148a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall llvm::BasicBlock *continueBB = 0; 1149664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1150664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall if (!isPointerSizedReturn) { 1151664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall startBB = Builder.GetInsertBlock(); 1152664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall messageBB = CGF.createBasicBlock("msgSend"); 1153a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall continueBB = CGF.createBasicBlock("continue"); 1154664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1155664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Value *isNil = Builder.CreateICmpEQ(Receiver, 1156664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Constant::getNullValue(Receiver->getType())); 1157a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall Builder.CreateCondBr(isNil, continueBB, messageBB); 1158664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall CGF.EmitBlock(messageBB); 1159664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } 1160664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 11610f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall IdTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(ASTIdTy)); 1162df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::Value *cmd; 1163df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian if (Method) 1164d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian cmd = GetSelector(Builder, Method); 1165df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian else 1166d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian cmd = GetSelector(Builder, Sel); 1167c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall cmd = EnforceType(Builder, cmd, SelectorTy); 1168c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Receiver = EnforceType(Builder, Receiver, IdTy); 1169c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 1170c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *impMD[] = { 1171c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDString::get(VMContext, Sel.getAsString()), 1172c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDString::get(VMContext, Class ? Class->getNameAsString() :""), 1173c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::ConstantInt::get(llvm::Type::getInt1Ty(VMContext), Class!=0) 1174c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall }; 11756f141659cab11109d9931d92d0988f8850778de3Jay Foad llvm::MDNode *node = llvm::MDNode::get(VMContext, impMD); 1176b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1177c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CallArgList ActualArgs; 117804c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(Receiver), ASTIdTy); 117904c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(cmd), CGF.getContext().getObjCSelType()); 1180f85e193739c953358c865005855253af4f68a497John McCall ActualArgs.addFrom(CallArgs); 1181de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall 1182de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall MessageSendInfo MSI = getMessageSendInfo(Method, ResultType, ActualArgs); 1183de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall 118489c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // Get the IMP to call 118589c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall llvm::Value *imp; 118689c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall 118789c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // If we have non-legacy dispatch specified, we try using the objc_msgSend() 118889c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // functions. These are not supported on all platforms (or all runtimes on a 118989c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // given platform), so we 119089c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall switch (CGM.getCodeGenOpts().getObjCDispatchMethod()) { 119189c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall case CodeGenOptions::Legacy: 119289c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall imp = LookupIMP(CGF, Receiver, cmd, node); 119389c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall break; 119489c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall case CodeGenOptions::Mixed: 119589c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall case CodeGenOptions::NonLegacy: 11966f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall if (CGM.ReturnTypeUsesFPRet(ResultType)) { 11976f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall imp = CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, IdTy, true), 11986f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall "objc_msgSend_fpret"); 1199de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall } else if (CGM.ReturnTypeUsesSRet(MSI.CallInfo)) { 120089c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // The actual types here don't matter - we're going to bitcast the 120189c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // function anyway 120289c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall imp = CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, IdTy, true), 120389c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall "objc_msgSend_stret"); 120489c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall } else { 120589c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall imp = CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, IdTy, true), 120689c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall "objc_msgSend"); 120789c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall } 120889c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall } 120989c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall 1210403bc3f85f3b3461b73abdd9c632980bf95f34bdDavid Chisnall // Reset the receiver in case the lookup modified it 1211403bc3f85f3b3461b73abdd9c632980bf95f34bdDavid Chisnall ActualArgs[0] = CallArg(RValue::get(Receiver), ASTIdTy, false); 121289c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall 1213de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall imp = EnforceType(Builder, imp, MSI.MessengerType); 121463e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall 12154b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall llvm::Instruction *call; 1216de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall RValue msgRet = CGF.EmitCall(MSI.CallInfo, imp, Return, ActualArgs, 12174b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall 0, &call); 12184b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall call->setMetadata(msgSendMDKind, node); 1219664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1220a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall 1221664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall if (!isPointerSizedReturn) { 1222a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall messageBB = CGF.Builder.GetInsertBlock(); 1223a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall CGF.Builder.CreateBr(continueBB); 1224a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall CGF.EmitBlock(continueBB); 1225664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall if (msgRet.isScalar()) { 1226664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Value *v = msgRet.getScalarVal(); 1227bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi = Builder.CreatePHI(v->getType(), 2); 1228664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(v, messageBB); 1229664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(llvm::Constant::getNullValue(v->getType()), startBB); 1230664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall msgRet = RValue::get(phi); 1231664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } else if (msgRet.isAggregate()) { 1232664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Value *v = msgRet.getAggregateAddr(); 1233bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi = Builder.CreatePHI(v->getType(), 2); 12342acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *RetTy = cast<llvm::PointerType>(v->getType()); 1235866163bf6c66211a9b4d5ba160ac02de04ce4be6David Chisnall llvm::AllocaInst *NullVal = 1236866163bf6c66211a9b4d5ba160ac02de04ce4be6David Chisnall CGF.CreateTempAlloca(RetTy->getElementType(), "null"); 1237664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall CGF.InitTempAlloca(NullVal, 1238664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Constant::getNullValue(RetTy->getElementType())); 1239664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(v, messageBB); 1240664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(NullVal, startBB); 1241664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall msgRet = RValue::getAggregate(phi); 1242664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } else /* isComplex() */ { 1243664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall std::pair<llvm::Value*,llvm::Value*> v = msgRet.getComplexVal(); 1244bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi = Builder.CreatePHI(v.first->getType(), 2); 1245664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(v.first, messageBB); 1246664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(llvm::Constant::getNullValue(v.first->getType()), 1247664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall startBB); 1248bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi2 = Builder.CreatePHI(v.second->getType(), 2); 1249664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi2->addIncoming(v.second, messageBB); 1250664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi2->addIncoming(llvm::Constant::getNullValue(v.second->getType()), 1251664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall startBB); 1252664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall msgRet = RValue::getComplex(phi, phi2); 1253664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } 1254664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } 1255664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall return msgRet; 125620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 125720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 12581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// Generates a MethodList. Used in construction of a objc_class and 125920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// objc_category structures. 1260795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendlingllvm::Constant *CGObjCGNU:: 1261795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill WendlingGenerateMethodList(const StringRef &ClassName, 1262795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling const StringRef &CategoryName, 1263795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<Selector> MethodSels, 1264795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> MethodTypes, 1265795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling bool isClassMethodList) { 12660f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall if (MethodSels.empty()) 12670f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall return NULLPtr; 12681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 12697650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCMethodTy = llvm::StructType::get( 127020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime creates it us. 127120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Method types 1272c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall IMPTy, //Method pointer 127320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 127420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 127520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 127620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size(); i < e; ++i) { 127720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 12789f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *Method = 127920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov TheModule.getFunction(SymbolNameForMethod(ClassName, CategoryName, 12809f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall MethodSels[i], 12819f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall isClassMethodList)); 12829f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall assert(Method && "Can't generate metadata for method that doesn't exist"); 12839f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *C = MakeConstantString(MethodSels[i].getAsString()); 12849f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(C); 12859f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(MethodTypes[i]); 12869f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Method = llvm::ConstantExpr::getBitCast(Method, 1287c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall IMPTy); 12889f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(Method); 12899f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Methods.push_back(llvm::ConstantStruct::get(ObjCMethodTy, Elements)); 129020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 129120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 129220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 129396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodTy, 12941e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Methods.size()); 12957db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *MethodArray = llvm::ConstantArray::get(ObjCMethodArrayTy, 1296fba676396703e87a5034e5f308aa30a633468f66Chris Lattner Methods); 129720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 129820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing list pointer, array and array count 1299c1c20114a401e503c07d68c47e0728bb063f35c8Chris Lattner llvm::StructType *ObjCMethodListTy = llvm::StructType::create(VMContext); 13009cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *NextPtrTy = llvm::PointerType::getUnqual(ObjCMethodListTy); 13019cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ObjCMethodListTy->setBody( 13021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NextPtrTy, 13031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump IntTy, 130420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodArrayTy, 130520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 130620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 130720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 130803e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson Methods.push_back(llvm::ConstantPointerNull::get( 130996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(ObjCMethodListTy))); 1310917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Methods.push_back(llvm::ConstantInt::get(Int32Ty, MethodTypes.size())); 131120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(MethodArray); 13121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 131320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 131420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodListTy, Methods, ".objc_method_list"); 131520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 131620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 131720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generates an IvarList. Used in construction of a objc_class. 1318795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendlingllvm::Constant *CGObjCGNU:: 1319795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill WendlingGenerateIvarList(ArrayRef<llvm::Constant *> IvarNames, 1320795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> IvarTypes, 1321795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> IvarOffsets) { 13221804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall if (IvarNames.size() == 0) 13231804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall return NULLPtr; 13241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 13257650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCIvarTy = llvm::StructType::get( 132620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 132720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 132820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, 132920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 133020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 133120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 133220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = IvarNames.size() ; i < e ; i++) { 133320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 13348a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(IvarNames[i]); 13358a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(IvarTypes[i]); 133620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IvarOffsets[i]); 133708e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Ivars.push_back(llvm::ConstantStruct::get(ObjCIvarTy, Elements)); 133820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 133920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 134020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 134196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCIvarArrayTy = llvm::ArrayType::get(ObjCIvarTy, 134220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarNames.size()); 134320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 13441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 134520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 13464a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(IntTy, (int)IvarNames.size())); 13477db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson Elements.push_back(llvm::ConstantArray::get(ObjCIvarArrayTy, Ivars)); 134820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing array and array count 13497650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCIvarListTy = llvm::StructType::get(IntTy, 135020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCIvarArrayTy, 135120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 135220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 135320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 135420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCIvarListTy, Elements, ".objc_ivar_list"); 13550f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 13560f984268b05edab2cc555a427c441baa9c252658Chris Lattner 135720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate a class structure 135820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateClassStructure( 135920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 136020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 136120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 1362d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 136320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 136420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 136520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 136620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 1367d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Protocols, 1368d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *IvarOffsets, 13698c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall llvm::Constant *Properties, 1370917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *StrongIvarBitmap, 1371917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *WeakIvarBitmap, 13728c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall bool isMeta) { 137320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Set up the class structure 137420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Note: Several of these are char*s when they should be ids. This is 137520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // because the runtime performs this translation on load. 1376d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // 1377d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Fields marked New ABI are part of the GNUstep runtime. We emit them 1378d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // anyway; the classes will still work with the GNU runtime, they will just 1379d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // be ignored. 13807650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ClassTy = llvm::StructType::get( 138113df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall PtrToInt8Ty, // isa 138220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // super_class 138320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // name 138420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // version 138520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // info 138620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // instance_size 138720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IVars->getType(), // ivars 138820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods->getType(), // methods 13891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // These are all filled in by the runtime, so we pretend 139020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // dtable 139120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // subclass_list 139220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // sibling_class 139320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // protocols 139420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // gc_object_type 1395d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // New ABI: 1396d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian LongTy, // abi_version 1397d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IvarOffsets->getType(), // ivar_offsets 1398d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties->getType(), // properties 13999d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall IntPtrTy, // strong_pointers 14009d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall IntPtrTy, // weak_pointers 140120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 14024a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::Constant *Zero = llvm::ConstantInt::get(LongTy, 0); 140320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Fill in the structure 140420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 14053c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(MetaClass, PtrToInt8Ty)); 140620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SuperClass); 1407d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner Elements.push_back(MakeConstantString(Name, ".class_name")); 140820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Zero); 14094a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, info)); 141005f3a507bb53ed2bd5573d551a26654a604187ebDavid Chisnall if (isMeta) { 141105f3a507bb53ed2bd5573d551a26654a604187ebDavid Chisnall llvm::TargetData td(&TheModule); 1412e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck Elements.push_back( 1413e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck llvm::ConstantInt::get(LongTy, 1414e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck td.getTypeSizeInBits(ClassTy) / 1415e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck CGM.getContext().getCharWidth())); 141605f3a507bb53ed2bd5573d551a26654a604187ebDavid Chisnall } else 141705f3a507bb53ed2bd5573d551a26654a604187ebDavid Chisnall Elements.push_back(InstanceSize); 141820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IVars); 141920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Methods); 1420d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 1421d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 1422d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 14233c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(Protocols, PtrTy)); 1424d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 1425917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Elements.push_back(llvm::ConstantInt::get(LongTy, 1)); 1426d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(IvarOffsets); 1427d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(Properties); 1428917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Elements.push_back(StrongIvarBitmap); 1429917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Elements.push_back(WeakIvarBitmap); 143020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 143141d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // This is now an externally visible symbol, so that we can speed up class 143213df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall // messages in the next ABI. We may already have some weak references to 143313df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall // this, so check and fix them properly. 143413df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall std::string ClassSym((isMeta ? "_OBJC_METACLASS_": "_OBJC_CLASS_") + 143513df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall std::string(Name)); 143613df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::GlobalVariable *ClassRef = TheModule.getNamedGlobal(ClassSym); 143713df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::Constant *Class = MakeGlobal(ClassTy, Elements, ClassSym, 143813df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::GlobalValue::ExternalLinkage); 143913df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall if (ClassRef) { 144013df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall ClassRef->replaceAllUsesWith(llvm::ConstantExpr::getBitCast(Class, 144113df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall ClassRef->getType())); 144213df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall ClassRef->removeFromParent(); 144313df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall Class->setName(ClassSym); 144413df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall } 144513df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall return Class; 144620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 144720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1448795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendlingllvm::Constant *CGObjCGNU:: 1449795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill WendlingGenerateProtocolMethodList(ArrayRef<llvm::Constant *> MethodNames, 1450795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> MethodTypes) { 14511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 14527650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCMethodDescTy = llvm::StructType::get( 145320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime does the casting for us. 145420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 145520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 145620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 145720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 145820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size() ; i < e ; i++) { 145920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 14601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(MethodNames[i]); 14618a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MethodTypes[i]); 146208e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Methods.push_back(llvm::ConstantStruct::get(ObjCMethodDescTy, Elements)); 146320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 146496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodDescTy, 146520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodNames.size()); 14667db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *Array = llvm::ConstantArray::get(ObjCMethodArrayTy, 1467bb1c8600218b3244340331165fc7cba7bf227655Mike Stump Methods); 14687650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCMethodDescListTy = llvm::StructType::get( 146920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, ObjCMethodArrayTy, NULL); 147020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 14714a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Methods.push_back(llvm::ConstantInt::get(IntTy, MethodNames.size())); 147220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(Array); 147320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodDescListTy, Methods, ".objc_method_list"); 147420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 1475bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 147620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// Create the protocol list structure used in classes, categories and so on 1477795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendlingllvm::Constant *CGObjCGNU::GenerateProtocolList(ArrayRef<std::string>Protocols){ 147896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 147920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Protocols.size()); 14807650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ProtocolListTy = llvm::StructType::get( 148120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, //Should be a recurisve pointer, but it's always NULL here. 14828fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall SizeTy, 148320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolArrayTy, 148420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 14851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 148620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (const std::string *iter = Protocols.begin(), *endIter = Protocols.end(); 148720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != endIter ; iter++) { 1488ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall llvm::Constant *protocol = 0; 1489ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall llvm::StringMap<llvm::Constant*>::iterator value = 1490ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall ExistingProtocols.find(*iter); 1491ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall if (value == ExistingProtocols.end()) { 1492f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian protocol = GenerateEmptyProtocol(*iter); 1493ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall } else { 1494ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall protocol = value->getValue(); 1495ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall } 14963c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::Constant *Ptr = llvm::ConstantExpr::getBitCast(protocol, 1497a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson PtrToInt8Ty); 149820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Ptr); 149920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 15007db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 150120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements); 150220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 150320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 15044a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, Protocols.size())); 150520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolArray); 150620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ProtocolListTy, Elements, ".objc_protocol_list"); 150720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 150820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 15091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpllvm::Value *CGObjCGNU::GenerateProtocolRef(CGBuilderTy &Builder, 1510af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD) { 1511f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Value *protocol = ExistingProtocols[PD->getNameAsString()]; 15122acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *T = 1513f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian CGM.getTypes().ConvertType(CGM.getContext().getObjCProtoType()); 151496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson return Builder.CreateBitCast(protocol, llvm::PointerType::getUnqual(T)); 1515f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian} 1516f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 1517f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanianllvm::Constant *CGObjCGNU::GenerateEmptyProtocol( 1518f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian const std::string &ProtocolName) { 15195f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<std::string, 0> EmptyStringVector; 15205f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 0> EmptyConstantVector; 1521f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 1522f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *ProtocolList = GenerateProtocolList(EmptyStringVector); 1523d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *MethodList = 1524f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian GenerateProtocolMethodList(EmptyConstantVector, EmptyConstantVector); 1525f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // Protocols are objects containing lists of the methods implemented and 1526f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // protocols adopted. 15277650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ProtocolTy = llvm::StructType::get(IdTy, 1528f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian PtrToInt8Ty, 1529f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian ProtocolList->getType(), 1530d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1531d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1532d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1533d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1534f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian NULL); 15351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 1536f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // The isa pointer must be set to a magic number so the runtime knows it's 1537f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // the correct layout. 15383c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getIntToPtr( 1539917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ConstantInt::get(Int32Ty, ProtocolVersion), IdTy)); 1540f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 1541f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(ProtocolList); 1542d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1543d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1544d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1545d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1546f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian return MakeGlobal(ProtocolTy, Elements, ".objc_protocol"); 154720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 154820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1549af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbarvoid CGObjCGNU::GenerateProtocol(const ObjCProtocolDecl *PD) { 1550af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar ASTContext &Context = CGM.getContext(); 15518ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ProtocolName = PD->getNameAsString(); 15521d784b277cdfd4eba03680715d2a082b3f28d295Douglas Gregor 15531d784b277cdfd4eba03680715d2a082b3f28d295Douglas Gregor // Use the protocol definition, if there is one. 15541d784b277cdfd4eba03680715d2a082b3f28d295Douglas Gregor if (const ObjCProtocolDecl *Def = PD->getDefinition()) 15551d784b277cdfd4eba03680715d2a082b3f28d295Douglas Gregor PD = Def; 15561d784b277cdfd4eba03680715d2a082b3f28d295Douglas Gregor 15575f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<std::string, 16> Protocols; 1558af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar for (ObjCProtocolDecl::protocol_iterator PI = PD->protocol_begin(), 1559af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar E = PD->protocol_end(); PI != E; ++PI) 1560d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*PI)->getNameAsString()); 15615f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> InstanceMethodNames; 15625f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 15635f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> OptionalInstanceMethodNames; 15645f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> OptionalInstanceMethodTypes; 156517945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (ObjCProtocolDecl::instmeth_iterator iter = PD->instmeth_begin(), 156617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis E = PD->instmeth_end(); iter != E; iter++) { 1567af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 1568af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl(*iter, TypeStr); 1569d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if ((*iter)->getImplementationControl() == ObjCMethodDecl::Optional) { 1570d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodNames.push_back( 1571d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1572d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 1573d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1574d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodNames.push_back( 1575d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1576d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 1577d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1578af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 1579af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar // Collect information about class methods: 15805f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> ClassMethodNames; 15815f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> ClassMethodTypes; 15825f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> OptionalClassMethodNames; 15835f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> OptionalClassMethodTypes; 15841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCProtocolDecl::classmeth_iterator 158517945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = PD->classmeth_begin(), endIter = PD->classmeth_end(); 158617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter != endIter ; iter++) { 1587af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 1588af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 1589d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if ((*iter)->getImplementationControl() == ObjCMethodDecl::Optional) { 1590d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassMethodNames.push_back( 1591d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1592d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 1593d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1594d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodNames.push_back( 1595d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1596d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodTypes.push_back(MakeConstantString(TypeStr)); 1597d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1598af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 159920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 160020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ProtocolList = GenerateProtocolList(Protocols); 160120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceMethodList = 160220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(InstanceMethodNames, InstanceMethodTypes); 160320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = 160420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(ClassMethodNames, ClassMethodTypes); 1605d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalInstanceMethodList = 1606d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolMethodList(OptionalInstanceMethodNames, 1607d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodTypes); 1608d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalClassMethodList = 1609d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolMethodList(OptionalClassMethodNames, 1610d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodTypes); 1611d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1612d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Property metadata: name, attributes, isSynthesized, setter name, setter 1613d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // types, getter name, getter types. 1614d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // The isSynthesized value is always set to 0 in a protocol. It exists to 1615d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // simplify the runtime library by allowing it to use the same data 1616d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // structures for protocol metadata everywhere. 16177650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *PropertyMetadataTy = llvm::StructType::get( 1618d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, Int8Ty, Int8Ty, PtrToInt8Ty, PtrToInt8Ty, PtrToInt8Ty, 1619d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, NULL); 1620d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Properties; 1621d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> OptionalProperties; 1622d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1623d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all of the property methods need adding to the method list and to the 1624d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // property metadata list. 1625d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (ObjCContainerDecl::prop_iterator 1626d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter = PD->prop_begin(), endIter = PD->prop_end(); 1627d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1628d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Fields; 1629d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ObjCPropertyDecl *property = (*iter); 1630d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1631d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(property->getNameAsString())); 1632d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 1633d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian property->getPropertyAttributes())); 1634d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 0)); 1635d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *getter = property->getGetterMethodDecl()) { 1636d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1637d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(getter,TypeStr); 1638d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 1639d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(TypeEncoding); 1640d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(getter->getSelector().getAsString())); 1641d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1642d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1643d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1644d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1645d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1646d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *setter = property->getSetterMethodDecl()) { 1647d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1648d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(setter,TypeStr); 1649d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 1650d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(TypeEncoding); 1651d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(setter->getSelector().getAsString())); 1652d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1653d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1654d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1655d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1656d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1657d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (property->getPropertyImplementation() == ObjCPropertyDecl::Optional) { 1658d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalProperties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1659d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1660d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1661d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1662d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1663d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyArray = llvm::ConstantArray::get( 1664d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType::get(PropertyMetadataTy, Properties.size()), Properties); 1665d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* PropertyListInitFields[] = 1666d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian {llvm::ConstantInt::get(IntTy, Properties.size()), NULLPtr, PropertyArray}; 1667d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1668d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyListInit = 1669c5cbb909e8a27deb8f1a2b6b7bf56a96051af81aChris Lattner llvm::ConstantStruct::getAnon(PropertyListInitFields); 1670d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyList = new llvm::GlobalVariable(TheModule, 1671d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyListInit->getType(), false, llvm::GlobalValue::InternalLinkage, 1672d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyListInit, ".objc_property_list"); 1673d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1674d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyArray = 1675d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantArray::get(llvm::ArrayType::get(PropertyMetadataTy, 1676d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalProperties.size()) , OptionalProperties); 1677d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* OptionalPropertyListInitFields[] = { 1678d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantInt::get(IntTy, OptionalProperties.size()), NULLPtr, 1679d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyArray }; 1680d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1681d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyListInit = 1682c5cbb909e8a27deb8f1a2b6b7bf56a96051af81aChris Lattner llvm::ConstantStruct::getAnon(OptionalPropertyListInitFields); 1683d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyList = new llvm::GlobalVariable(TheModule, 1684d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyListInit->getType(), false, 1685d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::InternalLinkage, OptionalPropertyListInit, 1686d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ".objc_property_list"); 1687d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 168820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocols are objects containing lists of the methods implemented and 168920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // protocols adopted. 16907650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ProtocolTy = llvm::StructType::get(IdTy, 169120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 169220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolList->getType(), 169320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov InstanceMethodList->getType(), 169420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ClassMethodList->getType(), 1695d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodList->getType(), 1696d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodList->getType(), 1697d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyList->getType(), 1698d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyList->getType(), 169920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 17001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 170120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The isa pointer must be set to a magic number so the runtime knows it's 170220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // the correct layout. 17033c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getIntToPtr( 1704917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ConstantInt::get(Int32Ty, ProtocolVersion), IdTy)); 170520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 170620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolList); 170720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceMethodList); 170820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassMethodList); 1709d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalInstanceMethodList); 1710d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalClassMethodList); 1711d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(PropertyList); 1712d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalPropertyList); 17131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ExistingProtocols[ProtocolName] = 17143c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolTy, Elements, 171520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_protocol"), IdTy); 171620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 1717d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianvoid CGObjCGNU::GenerateProtocolHolderCategory(void) { 1718d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Collect information about instance methods 17195f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 1> MethodSels; 17205f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 1> MethodTypes; 1721d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1722d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Elements; 1723d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const std::string ClassName = "__ObjC_Protocol_Holder_Ugly_Hack"; 1724d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const std::string CategoryName = "AnotherHack"; 1725d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MakeConstantString(CategoryName)); 1726d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MakeConstantString(ClassName)); 1727d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Instance method list 1728d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1729d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassName, CategoryName, MethodSels, MethodTypes, false), PtrTy)); 1730d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Class method list 1731d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1732d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassName, CategoryName, MethodSels, MethodTypes, true), PtrTy)); 1733d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Protocol list 1734d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrTy, 1735d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.size()); 17367650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ProtocolListTy = llvm::StructType::get( 1737d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy, //Should be a recurisve pointer, but it's always NULL here. 17388fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall SizeTy, 1739d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolArrayTy, 1740d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NULL); 1741d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> ProtocolElements; 1742d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (llvm::StringMapIterator<llvm::Constant*> iter = 1743d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.begin(), endIter = ExistingProtocols.end(); 1744d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1745d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Ptr = llvm::ConstantExpr::getBitCast(iter->getValue(), 1746d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy); 1747d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(Ptr); 1748d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1749d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 1750d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements); 1751d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.clear(); 1752d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(NULLPtr); 1753d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(llvm::ConstantInt::get(LongTy, 1754d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.size())); 1755d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(ProtocolArray); 1756d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolListTy, 1757d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements, ".objc_protocol_list"), PtrTy)); 1758d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Categories.push_back(llvm::ConstantExpr::getBitCast( 17597650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner MakeGlobal(llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, 1760d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy, PtrTy, PtrTy, NULL), Elements), PtrTy)); 1761d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian} 176220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1763917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// Libobjc2 uses a bitfield representation where small(ish) bitfields are 1764917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// stored in a 64-bit value with the low bit set to 1 and the remaining 63 1765917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// bits set to their values, LSB first, while larger ones are stored in a 1766917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// structure of this / form: 1767917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// 1768917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// struct { int32_t length; int32_t values[length]; }; 1769917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// 1770917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// The values in the array are stored in host-endian format, with the least 1771917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// significant bit being assumed to come first in the bitfield. Therefore, a 1772917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// bitfield with the 64th bit set will be (int64_t)&{ 2, [0, 1<<31] }, while a 1773917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// bitfield / with the 63rd bit set will be 1<<64. 1774795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendlingllvm::Constant *CGObjCGNU::MakeBitField(ArrayRef<bool> bits) { 1775917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall int bitCount = bits.size(); 17769d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall int ptrBits = 17779d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall (TheModule.getPointerSize() == llvm::Module::Pointer32) ? 32 : 64; 17789d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall if (bitCount < ptrBits) { 1779917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall uint64_t val = 1; 1780917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall for (int i=0 ; i<bitCount ; ++i) { 1781e3c944a9f620dacb0c29d16e7d61c8e7fca10963Eli Friedman if (bits[i]) val |= 1ULL<<(i+1); 1782917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 17839d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall return llvm::ConstantInt::get(IntPtrTy, val); 1784917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 1785917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::SmallVector<llvm::Constant*, 8> values; 1786917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall int v=0; 1787917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall while (v < bitCount) { 1788917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall int32_t word = 0; 1789917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall for (int i=0 ; (i<32) && (v<bitCount) ; ++i) { 1790917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall if (bits[v]) word |= 1<<i; 1791917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall v++; 1792917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 1793917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall values.push_back(llvm::ConstantInt::get(Int32Ty, word)); 1794917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 1795917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ArrayType *arrayTy = llvm::ArrayType::get(Int32Ty, values.size()); 1796917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *array = llvm::ConstantArray::get(arrayTy, values); 1797917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *fields[2] = { 1798917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ConstantInt::get(Int32Ty, values.size()), 1799917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall array }; 1800917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *GS = MakeGlobal(llvm::StructType::get(Int32Ty, arrayTy, 1801917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall NULL), fields); 180249de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall llvm::Constant *ptr = llvm::ConstantExpr::getPtrToInt(GS, IntPtrTy); 180349de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall return ptr; 1804917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall} 1805917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall 18067ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateCategory(const ObjCCategoryImplDecl *OCD) { 18078ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = OCD->getClassInterface()->getNameAsString(); 18088ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string CategoryName = OCD->getNameAsString(); 18097ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 18105f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 16> InstanceMethodSels; 18115f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 1812653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCCategoryImplDecl::instmeth_iterator 181317945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->instmeth_begin(), endIter = OCD->instmeth_end(); 1814653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 18157ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 18167ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 18177ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 18188a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 18197ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 18207ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 18217ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 18225f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 16> ClassMethodSels; 18235f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> ClassMethodTypes; 18241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCCategoryImplDecl::classmeth_iterator 182517945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->classmeth_begin(), endIter = OCD->classmeth_end(); 1826653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 18277ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 18287ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 18297ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 18308a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 18317ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 18327ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 18337ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 18345f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<std::string, 16> Protocols; 1835ad9e06d82ae627e858e5bfe4a7f1f9337b5b0a15David Chisnall const ObjCCategoryDecl *CatDecl = OCD->getCategoryDecl(); 1836ad9e06d82ae627e858e5bfe4a7f1f9337b5b0a15David Chisnall const ObjCList<ObjCProtocolDecl> &Protos = CatDecl->getReferencedProtocols(); 18377ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCList<ObjCProtocolDecl>::iterator I = Protos.begin(), 18387ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar E = Protos.end(); I != E; ++I) 1839d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 18407ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 184120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 184220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(CategoryName)); 184320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ClassName)); 18441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Instance method list 18453c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1846a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, InstanceMethodSels, InstanceMethodTypes, 184720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov false), PtrTy)); 184820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Class method list 18493c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1850a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, ClassMethodSels, ClassMethodTypes, true), 185120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy)); 185220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocol list 18533c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast( 185420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolList(Protocols), PtrTy)); 18553c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Categories.push_back(llvm::ConstantExpr::getBitCast( 18567650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner MakeGlobal(llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, 185747a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson PtrTy, PtrTy, PtrTy, NULL), Elements), PtrTy)); 185820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 18597ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 1860d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianllvm::Constant *CGObjCGNU::GeneratePropertyList(const ObjCImplementationDecl *OID, 18615f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<Selector> &InstanceMethodSels, 18625f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<llvm::Constant*> &InstanceMethodTypes) { 1863d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ASTContext &Context = CGM.getContext(); 1864d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // 1865d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Property metadata: name, attributes, isSynthesized, setter name, setter 1866d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // types, getter name, getter types. 18677650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *PropertyMetadataTy = llvm::StructType::get( 1868d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, Int8Ty, Int8Ty, PtrToInt8Ty, PtrToInt8Ty, PtrToInt8Ty, 1869d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, NULL); 1870d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Properties; 1871d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1872d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1873d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all of the property methods need adding to the method list and to the 1874d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // property metadata list. 1875d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (ObjCImplDecl::propimpl_iterator 1876d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter = OID->propimpl_begin(), endIter = OID->propimpl_end(); 1877d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1878d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Fields; 1879d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ObjCPropertyDecl *property = (*iter)->getPropertyDecl(); 188042ba04a072c69d84a6660e4498215086662910acDavid Chisnall ObjCPropertyImplDecl *propertyImpl = *iter; 188142ba04a072c69d84a6660e4498215086662910acDavid Chisnall bool isSynthesized = (propertyImpl->getPropertyImplementation() == 188242ba04a072c69d84a6660e4498215086662910acDavid Chisnall ObjCPropertyImplDecl::Synthesize); 1883d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1884d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(property->getNameAsString())); 1885d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 1886d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian property->getPropertyAttributes())); 188742ba04a072c69d84a6660e4498215086662910acDavid Chisnall Fields.push_back(llvm::ConstantInt::get(Int8Ty, isSynthesized)); 1888d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *getter = property->getGetterMethodDecl()) { 1889d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1890d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(getter,TypeStr); 1891d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 189242ba04a072c69d84a6660e4498215086662910acDavid Chisnall if (isSynthesized) { 189342ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodTypes.push_back(TypeEncoding); 189442ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodSels.push_back(getter->getSelector()); 189542ba04a072c69d84a6660e4498215086662910acDavid Chisnall } 1896d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(getter->getSelector().getAsString())); 1897d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1898d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1899d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1900d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1901d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1902d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *setter = property->getSetterMethodDecl()) { 1903d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1904d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(setter,TypeStr); 1905d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 190642ba04a072c69d84a6660e4498215086662910acDavid Chisnall if (isSynthesized) { 190742ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodTypes.push_back(TypeEncoding); 190842ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodSels.push_back(setter->getSelector()); 190942ba04a072c69d84a6660e4498215086662910acDavid Chisnall } 1910d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(setter->getSelector().getAsString())); 1911d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1912d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1913d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1914d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1915d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1916d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1917d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1918d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType *PropertyArrayTy = 1919d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType::get(PropertyMetadataTy, Properties.size()); 1920d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyArray = llvm::ConstantArray::get(PropertyArrayTy, 1921d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties); 1922d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* PropertyListInitFields[] = 1923d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian {llvm::ConstantInt::get(IntTy, Properties.size()), NULLPtr, PropertyArray}; 1924d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1925d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyListInit = 1926c5cbb909e8a27deb8f1a2b6b7bf56a96051af81aChris Lattner llvm::ConstantStruct::getAnon(PropertyListInitFields); 1927d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian return new llvm::GlobalVariable(TheModule, PropertyListInit->getType(), false, 1928d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::InternalLinkage, PropertyListInit, 1929d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ".objc_property_list"); 1930d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian} 1931d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 193229254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnallvoid CGObjCGNU::RegisterAlias(const ObjCCompatibleAliasDecl *OAD) { 193329254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // Get the class declaration for which the alias is specified. 193429254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall ObjCInterfaceDecl *ClassDecl = 193529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall const_cast<ObjCInterfaceDecl *>(OAD->getClassInterface()); 193629254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall std::string ClassName = ClassDecl->getNameAsString(); 193729254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall std::string AliasName = OAD->getNameAsString(); 193829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall ClassAliases.push_back(ClassAliasPair(ClassName,AliasName)); 193929254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall} 194029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 19417ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateClass(const ObjCImplementationDecl *OID) { 19427ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ASTContext &Context = CGM.getContext(); 19437ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 19447ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the superclass name. 19451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCInterfaceDecl * SuperClassDecl = 19467ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar OID->getClassInterface()->getSuperClass(); 19478ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string SuperClassName; 19482a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (SuperClassDecl) { 19498ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner SuperClassName = SuperClassDecl->getNameAsString(); 19502a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner EmitClassRef(SuperClassName); 19512a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 19527ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 19537ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the class name 195409dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner ObjCInterfaceDecl *ClassDecl = 195509dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner const_cast<ObjCInterfaceDecl *>(OID->getClassInterface()); 19568ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = ClassDecl->getNameAsString(); 19572a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // Emit the symbol that is used to generate linker errors if this class is 19582a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // referenced in other modules but not declared. 1959c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian std::string classSymbolName = "__objc_class_name_" + ClassName; 19601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (llvm::GlobalVariable *symbol = 1961c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian TheModule.getGlobalVariable(classSymbolName)) { 19624a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson symbol->setInitializer(llvm::ConstantInt::get(LongTy, 0)); 1963c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } else { 19641c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, LongTy, false, 19654a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::GlobalValue::ExternalLinkage, llvm::ConstantInt::get(LongTy, 0), 19661c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson classSymbolName); 1967c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } 19681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19692bebbf0acee55404de4b8846713b64429e744e8fDaniel Dunbar // Get the size of instances. 19705f022d82696c84e4d127c558871d68ac6273274eKen Dyck int instanceSize = 19715f022d82696c84e4d127c558871d68ac6273274eKen Dyck Context.getASTObjCImplementationLayout(OID).getSize().getQuantity(); 19727ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 19737ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance variables. 19745f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> IvarNames; 19755f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> IvarTypes; 19765f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> IvarOffsets; 19771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1978d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> IvarOffsetValues; 1979917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall SmallVector<bool, 16> WeakIvars; 1980917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall SmallVector<bool, 16> StrongIvars; 1981d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 19821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump int superInstanceSize = !SuperClassDecl ? 0 : 19835f022d82696c84e4d127c558871d68ac6273274eKen Dyck Context.getASTObjCInterfaceLayout(SuperClassDecl).getSize().getQuantity(); 19849cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // For non-fragile ivars, set the instance size to 0 - {the size of just this 19859cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // class}. The runtime will then set this to the correct value on load. 19864e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (CGM.getContext().getLangOpts().ObjCNonFragileABI) { 19879cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian instanceSize = 0 - (instanceSize - superInstanceSize); 19889cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 19897f63cb098f2461643f71ea590c1a477603f27f63David Chisnall 1990db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose for (const ObjCIvarDecl *IVD = ClassDecl->all_declared_ivar_begin(); IVD; 1991db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose IVD = IVD->getNextIvar()) { 19927ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Store the name 19937f63cb098f2461643f71ea590c1a477603f27f63David Chisnall IvarNames.push_back(MakeConstantString(IVD->getNameAsString())); 19947ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the type encoding for this ivar 19957ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 19967f63cb098f2461643f71ea590c1a477603f27f63David Chisnall Context.getObjCEncodingForType(IVD->getType(), TypeStr); 19978a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarTypes.push_back(MakeConstantString(TypeStr)); 19987ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the offset 1999d901da531433254210a08e8b1f9e1ad049b340aaDavid Chisnall uint64_t BaseOffset = ComputeIvarBaseOffset(CGM, OID, IVD); 2000aecbf24a6bad049437f8fec97e557d414003a3dbDavid Chisnall uint64_t Offset = BaseOffset; 20014e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (CGM.getContext().getLangOpts().ObjCNonFragileABI) { 2002d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Offset = BaseOffset - superInstanceSize; 20039cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 200463ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall llvm::Constant *OffsetValue = llvm::ConstantInt::get(IntTy, Offset); 200563ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall // Create the direct offset value 200663ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall std::string OffsetName = "__objc_ivar_offset_value_" + ClassName +"." + 200763ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall IVD->getNameAsString(); 200863ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall llvm::GlobalVariable *OffsetVar = TheModule.getGlobalVariable(OffsetName); 200963ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall if (OffsetVar) { 201063ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall OffsetVar->setInitializer(OffsetValue); 201163ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall // If this is the real definition, change its linkage type so that 201263ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall // different modules will use this one, rather than their private 201363ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall // copy. 201463ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall OffsetVar->setLinkage(llvm::GlobalValue::ExternalLinkage); 201563ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall } else 201663ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall OffsetVar = new llvm::GlobalVariable(TheModule, IntTy, 2017d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian false, llvm::GlobalValue::ExternalLinkage, 201863ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall OffsetValue, 2019d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian "__objc_ivar_offset_value_" + ClassName +"." + 202063ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall IVD->getNameAsString()); 202163ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall IvarOffsets.push_back(OffsetValue); 202263ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall IvarOffsetValues.push_back(OffsetVar); 2023917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Qualifiers::ObjCLifetime lt = IVD->getType().getQualifiers().getObjCLifetime(); 2024917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall switch (lt) { 2025917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall case Qualifiers::OCL_Strong: 2026917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall StrongIvars.push_back(true); 2027917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall WeakIvars.push_back(false); 2028917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall break; 2029917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall case Qualifiers::OCL_Weak: 2030917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall StrongIvars.push_back(false); 2031917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall WeakIvars.push_back(true); 2032917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall break; 2033917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall default: 2034917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall StrongIvars.push_back(false); 2035917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall WeakIvars.push_back(false); 2036917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 20377ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 2038917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *StrongIvarBitmap = MakeBitField(StrongIvars); 2039917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *WeakIvarBitmap = MakeBitField(WeakIvars); 20409f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::GlobalVariable *IvarOffsetArray = 20419f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall MakeGlobalArray(PtrToIntTy, IvarOffsetValues, ".ivar.offsets"); 20429f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 20437ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 20447ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 20455f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 16> InstanceMethodSels; 20465f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 20471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCImplementationDecl::instmeth_iterator 204817945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->instmeth_begin(), endIter = OID->instmeth_end(); 2049653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 20507ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 20517ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 20527ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 20538a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 20547ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 2055d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 2056d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Properties = GeneratePropertyList(OID, InstanceMethodSels, 2057d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes); 2058d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 20597ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 20607ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 20615f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 16> ClassMethodSels; 20625f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> ClassMethodTypes; 2063653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCImplementationDecl::classmeth_iterator 206417945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->classmeth_begin(), endIter = OID->classmeth_end(); 2065653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 20667ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 20677ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 20687ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 20698a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 20707ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 20717ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 20725f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<std::string, 16> Protocols; 2073a5f4441de7890953460d95f4e88b9fa432b48dc2Argyrios Kyrtzidis for (ObjCInterfaceDecl::protocol_iterator 2074a5f4441de7890953460d95f4e88b9fa432b48dc2Argyrios Kyrtzidis I = ClassDecl->protocol_begin(), 2075a5f4441de7890953460d95f4e88b9fa432b48dc2Argyrios Kyrtzidis E = ClassDecl->protocol_end(); I != E; ++I) 2076d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 20777ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 20787ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 20797ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 208020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the superclass pointer. 208120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass; 20828ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner if (!SuperClassName.empty()) { 208320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov SuperClass = MakeConstantString(SuperClassName, ".super_class_name"); 208420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } else { 208503e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson SuperClass = llvm::ConstantPointerNull::get(PtrToInt8Ty); 208620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 208720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Empty vector used to construct empty method lists 20885f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 1> empty; 208920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the method and instance variable lists 209020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MethodList = GenerateMethodList(ClassName, "", 2091a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner InstanceMethodSels, InstanceMethodTypes, false); 209220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = GenerateMethodList(ClassName, "", 2093a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassMethodSels, ClassMethodTypes, true); 209420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IvarList = GenerateIvarList(IvarNames, IvarTypes, 209520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarOffsets); 20961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Irrespective of whether we are compiling for a fragile or non-fragile ABI, 20978a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // we emit a symbol containing the offset for each ivar in the class. This 20988a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // allows code compiled for the non-Fragile ABI to inherit from code compiled 20998a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // for the legacy ABI, without causing problems. The converse is also 21008a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // possible, but causes all ivar accesses to be fragile. 2101e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall 21028a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Offset pointer for getting at the correct field in the ivar list when 21038a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // setting up the alias. These are: The base address for the global, the 21048a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // ivar array (second field), the ivar in this list (set for each ivar), and 21058a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // the offset (third field in ivar structure) 2106917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Type *IndexTy = Int32Ty; 21078a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *offsetPointerIndexes[] = {Zeros[0], 21081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::ConstantInt::get(IndexTy, 1), 0, 21098a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::ConstantInt::get(IndexTy, 2) }; 21108a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall 2111db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose unsigned ivarIndex = 0; 2112db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose for (const ObjCIvarDecl *IVD = ClassDecl->all_declared_ivar_begin(); IVD; 2113db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose IVD = IVD->getNextIvar()) { 21148a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall const std::string Name = "__objc_ivar_offset_" + ClassName + '.' 2115e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall + IVD->getNameAsString(); 2116db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose offsetPointerIndexes[2] = llvm::ConstantInt::get(IndexTy, ivarIndex); 21178a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Get the correct ivar field 21188a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *offsetValue = llvm::ConstantExpr::getGetElementPtr( 2119a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad IvarList, offsetPointerIndexes); 2120e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // Get the existing variable, if one exists. 21218a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *offset = TheModule.getNamedGlobal(Name); 21228a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (offset) { 21238a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offset->setInitializer(offsetValue); 21248a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // If this is the real definition, change its linkage type so that 21258a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // different modules will use this one, rather than their private 21268a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // copy. 21278a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offset->setLinkage(llvm::GlobalValue::ExternalLinkage); 21288a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } else { 21298a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Add a new alias if there isn't one already. 21308a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offset = new llvm::GlobalVariable(TheModule, offsetValue->getType(), 21318a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall false, llvm::GlobalValue::ExternalLinkage, offsetValue, Name); 21328a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 2133db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose ++ivarIndex; 21348a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 21359d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall llvm::Constant *ZeroPtr = llvm::ConstantInt::get(IntPtrTy, 0); 213620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //Generate metaclass for class methods 213720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClassStruct = GenerateClassStructure(NULLPtr, 21381804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall NULLPtr, 0x12L, ClassName.c_str(), 0, Zeros[0], GenerateIvarList( 2139917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall empty, empty, empty), ClassMethodList, NULLPtr, 21409d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall NULLPtr, NULLPtr, ZeroPtr, ZeroPtr, true); 21415efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 214220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the class structure 21438ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner llvm::Constant *ClassStruct = 2144d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateClassStructure(MetaClassStruct, SuperClass, 0x11L, 21458ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner ClassName.c_str(), 0, 21464a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::ConstantInt::get(LongTy, instanceSize), IvarList, 2147d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList, GenerateProtocolList(Protocols), IvarOffsetArray, 2148917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Properties, StrongIvarBitmap, WeakIvarBitmap); 21495efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 21505efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Resolve the class aliases, if they exist. 21515efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (ClassPtrAlias) { 21520b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall ClassPtrAlias->replaceAllUsesWith( 21533c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(ClassStruct, IdTy)); 21540b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall ClassPtrAlias->eraseFromParent(); 21555efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ClassPtrAlias = 0; 21565efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 21575efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (MetaClassPtrAlias) { 21580b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall MetaClassPtrAlias->replaceAllUsesWith( 21593c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(MetaClassStruct, IdTy)); 21600b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall MetaClassPtrAlias->eraseFromParent(); 21615efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias = 0; 21625efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 21635efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 216420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Add class structure to list to be added to the symtab later 21653c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson ClassStruct = llvm::ConstantExpr::getBitCast(ClassStruct, PtrToInt8Ty); 216620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(ClassStruct); 216720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 216820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 2169c38e9affd4519ea199af22419c8c794973cc4b23Fariborz Jahanian 21701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpllvm::Function *CGObjCGNU::ModuleInitFunction() { 217120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Only emit an ObjC load function if no Objective-C stuff has been called 217220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov if (Classes.empty() && Categories.empty() && ConstantStrings.empty() && 21739f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ExistingProtocols.empty() && SelectorTable.empty()) 217420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return NULL; 21751b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 2176d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all referenced protocols to a category. 2177d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolHolderCategory(); 2178d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 21792acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::StructType *SelStructTy = dyn_cast<llvm::StructType>( 2180e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelectorTy->getElementType()); 2181ef6de3da8572607f786303c07150daa6e140ab19Jay Foad llvm::Type *SelStructPtrTy = SelectorTy; 2182e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (SelStructTy == 0) { 21837650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner SelStructTy = llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, NULL); 218496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson SelStructPtrTy = llvm::PointerType::getUnqual(SelStructTy); 2185e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 2186e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 218720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 218871238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::Constant *Statics = NULLPtr; 218920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate statics list: 219071238f67c5df13eef19450d66b7a7ab28377192aChris Lattner if (ConstantStrings.size()) { 219196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *StaticsArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 219271238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.size() + 1); 219371238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.push_back(NULLPtr); 21948a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall 21954e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie StringRef StringClass = CGM.getLangOpts().ObjCConstantStringClass; 21969f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 21971b0969590e712d7d52fc9c0d43d3ab85c36d07a6Daniel Dunbar if (StringClass.empty()) StringClass = "NXConstantString"; 21989f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 21998a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MakeConstantString(StringClass, 22008a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ".objc_static_class_name")); 22017db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson Elements.push_back(llvm::ConstantArray::get(StaticsArrayTy, 220271238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings)); 22031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::StructType *StaticsListTy = 22047650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType::get(PtrToInt8Ty, StaticsArrayTy, NULL); 2205a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson llvm::Type *StaticsListPtrTy = 220696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(StaticsListTy); 220771238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListTy, Elements, ".objc_statics"); 22081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::ArrayType *StaticsListArrayTy = 220996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType::get(StaticsListPtrTy, 2); 221071238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.clear(); 221171238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.push_back(Statics); 2212c9c88b4159791c48e486ca94e3743b5979e2b7a6Owen Anderson Elements.push_back(llvm::Constant::getNullValue(StaticsListPtrTy)); 221371238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListArrayTy, Elements, ".objc_statics_ptr"); 22143c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Statics = llvm::ConstantExpr::getBitCast(Statics, PtrTy); 221571238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 221620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of classes, categories, and constant objects 221796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ClassListTy = llvm::ArrayType::get(PtrToInt8Ty, 221820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size() + Categories.size() + 2); 22197650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *SymTabTy = llvm::StructType::get(LongTy, SelStructPtrTy, 22200032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getInt16Ty(VMContext), 22210032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getInt16Ty(VMContext), 2222630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ClassListTy, NULL); 222320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 222420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 222520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Pointer to an array of selectors used in this module. 222620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Selectors; 22279f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::vector<llvm::GlobalAlias*> SelectorAliases; 22289f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall for (SelectorMap::iterator iter = SelectorTable.begin(), 22299f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall iterEnd = SelectorTable.end(); iter != iterEnd ; ++iter) { 22309f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 22319f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string SelNameStr = iter->first.getAsString(); 22329f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *SelName = ExportUniqueString(SelNameStr, ".objc_sel_name"); 22339f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 22345f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<TypedSelector> &Types = iter->second; 22355f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner for (SmallVectorImpl<TypedSelector>::iterator i = Types.begin(), 22369f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall e = Types.end() ; i!=e ; i++) { 22379f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 22389f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *SelectorTypeEncoding = NULLPtr; 22399f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (!i->first.empty()) 22409f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorTypeEncoding = MakeConstantString(i->first, ".objc_sel_types"); 22419f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 22429f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(SelName); 22439f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(SelectorTypeEncoding); 22449f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 22459f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.clear(); 22469f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 22479f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // Store the selector alias for later replacement 22489f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorAliases.push_back(i->second); 22499f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 225020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 22519f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall unsigned SelectorCount = Selectors.size(); 22529f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // NULL-terminate the selector list. This should not actually be required, 22539f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // because the selector list has a length field. Unfortunately, the GCC 22549f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // runtime decides to ignore the length field and expects a NULL terminator, 22559f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // and GCC cooperates with this by always setting the length to 0. 225620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 225720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 225808e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 225920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 22609f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 226120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of static selectors 22629f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(llvm::ConstantInt::get(LongTy, SelectorCount)); 22639f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *SelectorList = MakeGlobalArray(SelStructTy, Selectors, 226420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_selector_list"); 22651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantExpr::getBitCast(SelectorList, 2266e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelStructPtrTy)); 226720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 226820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Now that all of the static selectors exist, create pointers to them. 22699f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall for (unsigned int i=0 ; i<SelectorCount ; i++) { 22709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 227120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 2272917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ConstantInt::get(Int32Ty, i), Zeros[0]}; 22739f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // FIXME: We're generating redundant loads and stores here! 2274c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Constant *SelPtr = llvm::ConstantExpr::getGetElementPtr(SelectorList, 2275a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad makeArrayRef(Idxs, 2)); 2276e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // If selectors are defined as an opaque type, cast the pointer to this 2277e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // type. 2278c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SelPtr = llvm::ConstantExpr::getBitCast(SelPtr, SelectorTy); 22799f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorAliases[i]->replaceAllUsesWith(SelPtr); 22809f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorAliases[i]->eraseFromParent(); 228120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 22829f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 228320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of classes defined. 22841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantInt::get(llvm::Type::getInt16Ty(VMContext), 228520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size())); 228620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of categories defined 22871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantInt::get(llvm::Type::getInt16Ty(VMContext), 228820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Categories.size())); 228920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an array of classes, then categories, then static object instances 229020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.insert(Classes.end(), Categories.begin(), Categories.end()); 229120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // NULL-terminated list of static object instances (mainly constant strings) 229220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(Statics); 229320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(NULLPtr); 22947db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *ClassList = llvm::ConstantArray::get(ClassListTy, Classes); 229520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassList); 22961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Construct the symbol table 229720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SymTab= MakeGlobal(SymTabTy, Elements); 229820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 229920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The symbol table is contained in a module which has some version-checking 230020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // constants 23017650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType * ModuleTy = llvm::StructType::get(LongTy, LongTy, 2302a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall PtrToInt8Ty, llvm::PointerType::getUnqual(SymTabTy), 2303f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall (RuntimeVersion >= 10) ? IntTy : NULL, NULL); 230420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 23059f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // Runtime version, used for ABI compatibility checking. 23069f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(llvm::ConstantInt::get(LongTy, RuntimeVersion)); 230791a0b51438e5259a79d68d7450c453827beed9e2Fariborz Jahanian // sizeof(ModuleTy) 230874a8bbf0654fbbf37be04b240b5bbe591f37f242Benjamin Kramer llvm::TargetData td(&TheModule); 2309e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck Elements.push_back( 2310e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck llvm::ConstantInt::get(LongTy, 2311e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck td.getTypeSizeInBits(ModuleTy) / 2312e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck CGM.getContext().getCharWidth())); 23139f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 23149f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // The path to the source file where this module was declared 23159f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SourceManager &SM = CGM.getContext().getSourceManager(); 23169f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const FileEntry *mainFile = SM.getFileEntryForID(SM.getMainFileID()); 23179f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string path = 23189f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string(mainFile->getDir()->getName()) + '/' + mainFile->getName(); 23199f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(MakeConstantString(path, ".objc_source_file_name")); 232020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SymTab); 2321a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall 2322f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall if (RuntimeVersion >= 10) 23234e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie switch (CGM.getLangOpts().getGC()) { 2324f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall case LangOptions::GCOnly: 2325a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall Elements.push_back(llvm::ConstantInt::get(IntTy, 2)); 2326a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall break; 2327f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall case LangOptions::NonGC: 23284e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (CGM.getLangOpts().ObjCAutoRefCount) 2329f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall Elements.push_back(llvm::ConstantInt::get(IntTy, 1)); 2330f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall else 2331f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall Elements.push_back(llvm::ConstantInt::get(IntTy, 0)); 2332f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall break; 2333f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall case LangOptions::HybridGC: 2334f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall Elements.push_back(llvm::ConstantInt::get(IntTy, 1)); 2335f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall break; 2336f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall } 2337a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall 233820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *Module = MakeGlobal(ModuleTy, Elements); 233920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 234020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create the load function calling the runtime entry point with the module 234120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // structure 234220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function * LoadFunction = llvm::Function::Create( 23430032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), false), 234420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, ".objc_load_function", 234520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &TheModule); 23460032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::BasicBlock *EntryBB = 23470032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::BasicBlock::Create(VMContext, "entry", LoadFunction); 2348a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson CGBuilderTy Builder(VMContext); 234920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.SetInsertPoint(EntryBB); 235026c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 235195d318c4c10437db40ca6e15fdf32e04012da58eBenjamin Kramer llvm::FunctionType *FT = 2352da549e8995c447542d5631b8b67fcc3a9582797aJay Foad llvm::FunctionType::get(Builder.getVoidTy(), 2353da549e8995c447542d5631b8b67fcc3a9582797aJay Foad llvm::PointerType::getUnqual(ModuleTy), true); 235495d318c4c10437db40ca6e15fdf32e04012da58eBenjamin Kramer llvm::Value *Register = CGM.CreateRuntimeFunction(FT, "__objc_exec_class"); 235520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateCall(Register, Module); 235629254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 2357dccaa239ec125926a9c1fb5f328bce349e41637bDavid Chisnall if (!ClassAliases.empty()) { 235829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::Type *ArgTypes[2] = {PtrTy, PtrToInt8Ty}; 235929254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::FunctionType *RegisterAliasTy = 236029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::FunctionType::get(Builder.getVoidTy(), 236129254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall ArgTypes, false); 236229254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::Function *RegisterAlias = llvm::Function::Create( 236329254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall RegisterAliasTy, 236429254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::GlobalValue::ExternalWeakLinkage, "class_registerAlias_np", 236529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall &TheModule); 236629254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::BasicBlock *AliasBB = 236729254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::BasicBlock::Create(VMContext, "alias", LoadFunction); 236829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::BasicBlock *NoAliasBB = 236929254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::BasicBlock::Create(VMContext, "no_alias", LoadFunction); 237029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 237129254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // Branch based on whether the runtime provided class_registerAlias_np() 237229254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::Value *HasRegisterAlias = Builder.CreateICmpNE(RegisterAlias, 237329254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::Constant::getNullValue(RegisterAlias->getType())); 237429254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall Builder.CreateCondBr(HasRegisterAlias, AliasBB, NoAliasBB); 237529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 237629254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // The true branch (has alias registration fucntion): 237729254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall Builder.SetInsertPoint(AliasBB); 237829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // Emit alias registration calls: 237929254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall for (std::vector<ClassAliasPair>::iterator iter = ClassAliases.begin(); 238029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall iter != ClassAliases.end(); ++iter) { 238129254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::Constant *TheClass = 238229254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall TheModule.getGlobalVariable(("_OBJC_CLASS_" + iter->first).c_str(), 238329254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall true); 238429254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall if (0 != TheClass) { 238529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall TheClass = llvm::ConstantExpr::getBitCast(TheClass, PtrTy); 238629254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall Builder.CreateCall2(RegisterAlias, TheClass, 238729254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall MakeConstantString(iter->second)); 238829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall } 238929254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall } 239029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // Jump to end: 239129254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall Builder.CreateBr(NoAliasBB); 239229254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 239329254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // Missing alias registration function, just return from the function: 239429254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall Builder.SetInsertPoint(NoAliasBB); 239529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall } 239620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateRetVoid(); 23979cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 239820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return LoadFunction; 239920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 24007ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 2401679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanianllvm::Function *CGObjCGNU::GenerateMethod(const ObjCMethodDecl *OMD, 24021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCContainerDecl *CD) { 24031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCCategoryImplDecl *OCD = 24043e0a540b6d846178857289ec0eb8470a278d11a3Steve Naroff dyn_cast<ObjCCategoryImplDecl>(OMD->getDeclContext()); 24055f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef CategoryName = OCD ? OCD->getName() : ""; 24065f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef ClassName = CD->getName(); 24079f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Selector MethodName = OMD->getSelector(); 2408f8d49f64ef6ab7e632717a31631fc289aab69428Douglas Gregor bool isClassMethod = !OMD->isInstanceMethod(); 2409391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 2410541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar CodeGenTypes &Types = CGM.getTypes(); 24112acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::FunctionType *MethodTy = 2412de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall Types.GetFunctionType(Types.arrangeObjCMethodDeclaration(OMD)); 241320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::string FunctionName = SymbolNameForMethod(ClassName, CategoryName, 241420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodName, isClassMethod); 241520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 2416d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar llvm::Function *Method 24171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump = llvm::Function::Create(MethodTy, 24181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalValue::InternalLinkage, 24191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump FunctionName, 24201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump &TheModule); 2421391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner return Method; 2422391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 2423391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 2424789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetPropertyGetFunction() { 24259f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return GetPropertyFn; 242649f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 242749f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 2428789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetPropertySetFunction() { 24299f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return SetPropertyFn; 243049f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 243149f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 2432ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenekllvm::Constant *CGObjCGNU::GetOptimizedPropertySetFunction(bool atomic, 2433ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool copy) { 2434ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return 0; 2435ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 2436ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 2437789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetGetStructFunction() { 24389f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return GetStructPropertyFn; 24398fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall} 2440789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetSetStructFunction() { 24419f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return SetStructPropertyFn; 24426cc590602f41c3e98e8af0023d54296c8eca7910Fariborz Jahanian} 2443e3173021fa3bfdf7e6759d67838e385a83b2d57eFariborz Jahanianllvm::Constant *CGObjCGNU::GetCppAtomicObjectFunction() { 2444e3173021fa3bfdf7e6759d67838e385a83b2d57eFariborz Jahanian return 0; 2445e3173021fa3bfdf7e6759d67838e385a83b2d57eFariborz Jahanian} 24466cc590602f41c3e98e8af0023d54296c8eca7910Fariborz Jahanian 2447309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbarllvm::Constant *CGObjCGNU::EnumerationMutationFunction() { 24489f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return EnumerationMutationFn; 24492abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson} 24502abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson 24519f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitSynchronizedStmt(CodeGenFunction &CGF, 2452f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtSynchronizedStmt &S) { 24539735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall EmitAtSynchronizedStmt(CGF, S, SyncEnterFn, SyncExitFn); 2454f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall} 24555dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 24565dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 24579f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitTryStmt(CodeGenFunction &CGF, 2458f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtTryStmt &S) { 2459f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // Unlike the Apple non-fragile runtimes, which also uses 2460f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // unwind-based zero cost exceptions, the GNU Objective C runtime's 2461f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // EH support isn't a veneer over C++ EH. Instead, exception 2462f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // objects are created by __objc_exception_throw and destroyed by 2463f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // the personality function; this avoids the need for bracketing 2464f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // catch handlers with calls to __blah_begin_catch/__blah_end_catch 2465f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // (or even _Unwind_DeleteException), but probably doesn't 2466f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // interoperate very well with foreign exceptions. 24679735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // 246880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // In Objective-C++ mode, we actually emit something equivalent to the C++ 24699735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // exception handler. 24709735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall EmitTryCatchStmt(CGF, S, EnterCatchFn, ExitCatchFn, ExceptionReThrowFn); 24719735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return ; 247264d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 247364d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 24749f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitThrowStmt(CodeGenFunction &CGF, 247549f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar const ObjCAtThrowStmt &S) { 24765dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ExceptionAsObject; 24775dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 24785dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const Expr *ThrowExpr = S.getThrowExpr()) { 24792b014d6c0c6b8ac94b416ac37dfc7931f20777a7John McCall llvm::Value *Exception = CGF.EmitObjCThrowOperand(ThrowExpr); 24801e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ExceptionAsObject = Exception; 24815dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 24821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((!CGF.ObjCEHValueStack.empty() && CGF.ObjCEHValueStack.back()) && 24835dc0867af17b3bd6f567897433853b2b4767446cChris Lattner "Unexpected rethrow outside @catch block."); 24845dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ExceptionAsObject = CGF.ObjCEHValueStack.back(); 24855dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 2486578faa837b552403e2002b97fdfbfde14f2448e5Benjamin Kramer ExceptionAsObject = CGF.Builder.CreateBitCast(ExceptionAsObject, IdTy); 24871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 24885dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Note: This may have to be an invoke, if we want to support constructs like: 24895dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @try { 24905dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @throw(obj); 24915dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // } 24925dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @catch(id) ... 24935dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // 24945dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // This is effectively turning @throw into an incredibly-expensive goto, but 24955dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // it may happen as a result of inlining followed by missed optimizations, or 24965dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // as a result of stupidity. 24975dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *UnwindBB = CGF.getInvokeDest(); 24985dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!UnwindBB) { 24999f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CGF.Builder.CreateCall(ExceptionThrowFn, ExceptionAsObject); 25005dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateUnreachable(); 25015dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 25024c7d9f1507d0f102bd4133bba63348636facd469Jay Foad CGF.Builder.CreateInvoke(ExceptionThrowFn, UnwindBB, UnwindBB, 25034c7d9f1507d0f102bd4133bba63348636facd469Jay Foad ExceptionAsObject); 25045dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 25055dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Clear the insertion point to indicate we are in unreachable code. 25065dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.ClearInsertionPoint(); 250764d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 250864d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 25099f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallllvm::Value * CGObjCGNU::EmitObjCWeakRead(CodeGenFunction &CGF, 25101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *AddrWeakObj) { 2511ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 251231fc0c1a16dabd397dd3323fb0dbe7052b87abd0David Chisnall AddrWeakObj = EnforceType(B, AddrWeakObj, PtrToIdTy); 2513ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return B.CreateCall(WeakReadFn, AddrWeakObj); 25146dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian} 25156dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian 25169f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCWeakAssign(CodeGenFunction &CGF, 25171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *src, llvm::Value *dst) { 2518ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2519ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2520ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2521ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall2(WeakAssignFn, src, dst); 25223e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian} 25233e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian 25249f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCGlobalAssign(CodeGenFunction &CGF, 2525021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian llvm::Value *src, llvm::Value *dst, 2526021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian bool threadlocal) { 2527ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2528ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2529ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2530021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian if (!threadlocal) 2531021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian B.CreateCall2(GlobalAssignFn, src, dst); 2532021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian else 2533021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian // FIXME. Add threadloca assign API 2534b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("EmitObjCGlobalAssign - Threal Local API NYI"); 253558626500527695865683d1d65053743de8770b60Fariborz Jahanian} 253658626500527695865683d1d65053743de8770b60Fariborz Jahanian 25379f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCIvarAssign(CodeGenFunction &CGF, 25386c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *src, llvm::Value *dst, 25396c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *ivarOffset) { 2540ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2541ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2542b44eda31a214ad88616acbe28c3f0a70268adc6cDavid Chisnall dst = EnforceType(B, dst, IdTy); 2543ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall3(IvarAssignFn, src, dst, ivarOffset); 25447eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian} 25457eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian 25469f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCStrongCastAssign(CodeGenFunction &CGF, 25471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *src, llvm::Value *dst) { 2548ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2549ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2550ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2551ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall2(StrongCastAssignFn, src, dst); 255258626500527695865683d1d65053743de8770b60Fariborz Jahanian} 255358626500527695865683d1d65053743de8770b60Fariborz Jahanian 25549f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitGCMemmoveCollectable(CodeGenFunction &CGF, 25551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *DestPtr, 2556082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *SrcPtr, 255755bcace250e1ff366e4482714b344b8cbc8be5f3Fariborz Jahanian llvm::Value *Size) { 2558ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 255968e5e1331d99140ae5dd7b27c3dd28618827dfc8David Chisnall DestPtr = EnforceType(B, DestPtr, PtrTy); 256068e5e1331d99140ae5dd7b27c3dd28618827dfc8David Chisnall SrcPtr = EnforceType(B, SrcPtr, PtrTy); 2561ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 256255bcace250e1ff366e4482714b344b8cbc8be5f3Fariborz Jahanian B.CreateCall3(MemMoveFn, DestPtr, SrcPtr, Size); 2563082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian} 2564082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian 25659cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianllvm::GlobalVariable *CGObjCGNU::ObjCIvarOffsetVariable( 25669cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *ID, 25679cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar) { 25689cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const std::string Name = "__objc_ivar_offset_" + ID->getNameAsString() 25699cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian + '.' + Ivar->getNameAsString(); 25709cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Emit the variable and initialize it with what we think the correct value 25719cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // is. This allows code compiled with non-fragile ivars to work correctly 25729cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // when linked against code which isn't (most of the time). 25738a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *IvarOffsetPointer = TheModule.getNamedGlobal(Name); 25748a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (!IvarOffsetPointer) { 2575e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // This will cause a run-time crash if we accidentally use it. A value of 2576e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // 0 would seem more sensible, but will silently overwrite the isa pointer 2577e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // causing a great deal of confusion. 2578e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall uint64_t Offset = -1; 2579e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // We can't call ComputeIvarBaseOffset() here if we have the 2580e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // implementation, because it will create an invalid ASTRecordLayout object 2581e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // that we are then stuck with forever, so we only initialize the ivar 2582e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // offset variable with a guess if we only have the interface. The 2583e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // initializer will be reset later anyway, when we are generating the class 2584e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // description. 2585e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall if (!CGM.getContext().getObjCImplementation( 2586cb421fa690da545b58a720abe5f1c49b166dbde7Dan Gohman const_cast<ObjCInterfaceDecl *>(ID))) 2587d901da531433254210a08e8b1f9e1ad049b340aaDavid Chisnall Offset = ComputeIvarBaseOffset(CGM, ID, Ivar); 2588d901da531433254210a08e8b1f9e1ad049b340aaDavid Chisnall 258949de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall llvm::ConstantInt *OffsetGuess = llvm::ConstantInt::get(Int32Ty, Offset, 2590243f108a7c5dc4733e9ef6b7b7c2cd0465cf2104Richard Trieu /*isSigned*/true); 25918a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Don't emit the guess in non-PIC code because the linker will not be able 25928a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // to replace it with the real version for a library. In non-PIC code you 25938a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // must compile with the fragile ABI if you want to use ivars from a 25941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // GCC-compiled class. 25954e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (CGM.getLangOpts().PICLevel) { 25968a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *IvarOffsetGV = new llvm::GlobalVariable(TheModule, 2597917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Int32Ty, false, 25988a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalValue::PrivateLinkage, OffsetGuess, Name+".guess"); 25998a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetPointer = new llvm::GlobalVariable(TheModule, 26008a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetGV->getType(), false, llvm::GlobalValue::LinkOnceAnyLinkage, 26018a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetGV, Name); 26028a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } else { 26038a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetPointer = new llvm::GlobalVariable(TheModule, 26043c0ef8cc0dc246bd3083e8cdd63005e8873d36d2Benjamin Kramer llvm::Type::getInt32PtrTy(VMContext), false, 26053c0ef8cc0dc246bd3083e8cdd63005e8873d36d2Benjamin Kramer llvm::GlobalValue::ExternalLinkage, 0, Name); 26068a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 26079cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 26088a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall return IvarOffsetPointer; 26099cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 26109cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 26119f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallLValue CGObjCGNU::EmitObjCValueForIvar(CodeGenFunction &CGF, 2612598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 2613598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 2614598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 2615598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers) { 2616c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall const ObjCInterfaceDecl *ID = 2617c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall ObjectTy->getAs<ObjCObjectType>()->getInterface(); 26189777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar return EmitValueForIvarAtOffset(CGF, ID, BaseValue, Ivar, CVRQualifiers, 26199777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar EmitIvarOffset(CGF, ID, Ivar)); 26200bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian} 2621bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 26229cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianstatic const ObjCInterfaceDecl *FindIvarInterface(ASTContext &Context, 26239cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *OID, 26249cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *OIVD) { 2625db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose for (const ObjCIvarDecl *next = OID->all_declared_ivar_begin(); next; 2626db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose next = next->getNextIvar()) { 2627db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose if (OIVD == next) 26289cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return OID; 26299cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 26301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 26319cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Otherwise check in the super class. 26329cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (const ObjCInterfaceDecl *Super = OID->getSuperClass()) 26339cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return FindIvarInterface(Context, Super, OIVD); 26341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 26359cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return 0; 26369cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 26370bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian 26389f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallllvm::Value *CGObjCGNU::EmitIvarOffset(CodeGenFunction &CGF, 26392a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 2640f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar) { 26414e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (CGM.getLangOpts().ObjCNonFragileABI) { 26429cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Interface = FindIvarInterface(CGM.getContext(), Interface, Ivar); 264363ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall if (RuntimeVersion < 10) 264463ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall return CGF.Builder.CreateZExtOrBitCast( 264563ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall CGF.Builder.CreateLoad(CGF.Builder.CreateLoad( 264663ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall ObjCIvarOffsetVariable(Interface, Ivar), false, "ivar")), 264763ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall PtrDiffTy); 264863ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall std::string name = "__objc_ivar_offset_value_" + 264963ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall Interface->getNameAsString() +"." + Ivar->getNameAsString(); 265063ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall llvm::Value *Offset = TheModule.getGlobalVariable(name); 265163ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall if (!Offset) 265263ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall Offset = new llvm::GlobalVariable(TheModule, IntTy, 26533fc81d32314eca98b51846f493a8bc77cf14a701David Chisnall false, llvm::GlobalValue::LinkOnceAnyLinkage, 26543fc81d32314eca98b51846f493a8bc77cf14a701David Chisnall llvm::Constant::getNullValue(IntTy), name); 265563ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall return CGF.Builder.CreateLoad(Offset); 26569cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 26579777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar uint64_t Offset = ComputeIvarBaseOffset(CGF.CGM, Interface, Ivar); 2658243f108a7c5dc4733e9ef6b7b7c2cd0465cf2104Richard Trieu return llvm::ConstantInt::get(PtrDiffTy, Offset, /*isSigned*/true); 2659f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian} 2660f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian 26619f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCRuntime * 26629f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclang::CodeGen::CreateGNUObjCRuntime(CodeGenModule &CGM) { 26634e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (CGM.getLangOpts().ObjCNonFragileABI) 26649f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return new CGObjCGNUstep(CGM); 26659f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return new CGObjCGCC(CGM); 26660f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 2667