CGObjCGNU.cpp revision cfa88f893915ceb8ae4ce2f17c46c24a4d67502f
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" 1836f893c1efe367f929d92c8b125f964c22ba189eJohn McCall#include "CGCleanup.h" 1955fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "CodeGenFunction.h" 2055fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "CodeGenModule.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/FileManager.h" 2755fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Basic/SourceManager.h" 280f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "llvm/ADT/SmallVector.h" 2920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov#include "llvm/ADT/StringMap.h" 303b844ba7d5be205a9b4f5f0b0d1b7978977f4b8cChandler Carruth#include "llvm/IR/DataLayout.h" 313b844ba7d5be205a9b4f5f0b0d1b7978977f4b8cChandler Carruth#include "llvm/IR/Intrinsics.h" 323b844ba7d5be205a9b4f5f0b0d1b7978977f4b8cChandler Carruth#include "llvm/IR/LLVMContext.h" 333b844ba7d5be205a9b4f5f0b0d1b7978977f4b8cChandler Carruth#include "llvm/IR/Module.h" 3480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall#include "llvm/Support/CallSite.h" 357ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar#include "llvm/Support/Compiler.h" 365f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner#include <cstdarg> 37e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 38e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 39dce1406f1c1f572cfd61c494546572d63461c741Chris Lattnerusing namespace clang; 4046f45b9bec4a265ad8400a538e5ec3a5683617f1Daniel Dunbarusing namespace CodeGen; 4120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 420f984268b05edab2cc555a427c441baa9c252658Chris Lattner 430f984268b05edab2cc555a427c441baa9c252658Chris Lattnernamespace { 4481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// Class that lazily initialises the runtime function. Avoids inserting the 4581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// types and the function declaration into a module if they're not used, and 4681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// avoids constructing the type more than once if it's used more than once. 479f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass LazyRuntimeFunction { 489f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CodeGenModule *CGM; 499cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner std::vector<llvm::Type*> ArgTys; 509f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const char *FunctionName; 51789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall llvm::Constant *Function; 529f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall public: 5381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Constructor leaves this class uninitialized, because it is intended to 5481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// be used as a field in another class and not all of the types that are 5581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used as arguments will necessarily be available at construction time. 569f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction() : CGM(0), FunctionName(0), Function(0) {} 579f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 5881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Initialises the lazy function with the name, return type, and the types 5981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// of the arguments. 609f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall END_WITH_NULL 619f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall void init(CodeGenModule *Mod, const char *name, 629cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *RetTy, ...) { 639f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CGM =Mod; 649f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall FunctionName = name; 659f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Function = 0; 669735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall ArgTys.clear(); 679f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall va_list Args; 689f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall va_start(Args, RetTy); 699cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner while (llvm::Type *ArgTy = va_arg(Args, llvm::Type*)) 709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.push_back(ArgTy); 719f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall va_end(Args); 729f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // Push the return type on at the end so we can pop it off easily 739f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.push_back(RetTy); 749f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 7581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Overloaded cast operator, allows the class to be implicitly cast to an 7681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM constant. 77789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall operator llvm::Constant*() { 789f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (!Function) { 799735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall if (0 == FunctionName) return 0; 809735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // We put the return type on the end of the vector, so pop it back off 812acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *RetTy = ArgTys.back(); 829f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.pop_back(); 839f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::FunctionType *FTy = llvm::FunctionType::get(RetTy, ArgTys, false); 849f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Function = 85789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall cast<llvm::Constant>(CGM->CreateRuntimeFunction(FTy, FunctionName)); 869735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // We won't need to use the types again, so we may as well clean up the 879735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // vector now 889f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.resize(0); 899f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 909f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return Function; 919f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 92789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall operator llvm::Function*() { 935f0bcc4c3f4a75375a3571e71bffebf603f4ca67David Chisnall return cast<llvm::Function>((llvm::Constant*)*this); 94789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall } 955f0bcc4c3f4a75375a3571e71bffebf603f4ca67David Chisnall 969f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall}; 979f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 989f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 9981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// GNU Objective-C runtime code generation. This class implements the parts of 100f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall/// Objective-C support that are specific to the GNU family of runtimes (GCC, 101f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall/// GNUstep and ObjFW). 1029f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass CGObjCGNU : public CGObjCRuntime { 103c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnallprotected: 10481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The LLVM module into which output is inserted 1050f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Module &TheModule; 10681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// strut objc_super. Used for sending messages to super. This structure 10781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// contains the receiver (object) and the expected class. 1082acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::StructType *ObjCSuperTy; 10981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// struct objc_super*. The type of the argument to the superclass message 11081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// lookup functions. 1112acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *PtrToObjCSuperTy; 11281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for selectors. Opaque pointer (i8*) unless a header declaring 11381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// SEL is included in a header somewhere, in which case it will be whatever 11481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// type is declared in that header, most likely {i8*, i8*}. 1159cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *SelectorTy; 11681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM i8 type. Cached here to avoid repeatedly getting it in all of the 11781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// places where it's used 1182acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::IntegerType *Int8Ty; 11981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Pointer to i8 - LLVM type of char*, for all of the places where the 12081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// runtime needs to deal with C strings. 1219cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *PtrToInt8Ty; 12281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Instance Method Pointer type. This is a pointer to a function that takes, 12381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// at a minimum, an object and a selector, and is the generic type for 12481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Objective-C methods. Due to differences between variadic / non-variadic 12581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// calling conventions, it must always be cast to the correct type before 12681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// actually being used. 1279cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *IMPTy; 12881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Type of an untyped Objective-C object. Clang treats id as a built-in type 12981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// when compiling Objective-C code, so this may be an opaque pointer (i8*), 13081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// but if the runtime header declaring it is included then it may be a 13181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// pointer to a structure. 1329cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *IdTy; 13381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Pointer to a pointer to an Objective-C object. Used in the new ABI 13481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// message lookup function and some GC-related functions. 1352acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *PtrToIdTy; 13681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The clang type of id. Used when using the clang CGCall infrastructure to 13781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// call Objective-C methods. 138ead608af31b6c9abeae1ca6d0b75094dac4641c0John McCall CanQualType ASTIdTy; 13981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C int type. 1409cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::IntegerType *IntTy; 14181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for an opaque pointer. This is identical to PtrToInt8Ty, but is 14281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used in the code to document the difference between i8* meaning a pointer 14381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// to a C string and i8* meaning a pointer to some opaque type. 1449cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *PtrTy; 14581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C long type. The runtime uses this in a lot of places where 14681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// it should be using intptr_t, but we can't fix this without breaking 14781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// compatibility with GCC... 148ef6de3da8572607f786303c07150daa6e140ab19Jay Foad llvm::IntegerType *LongTy; 14981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C size_t. Used in various runtime data structures. 1502acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::IntegerType *SizeTy; 15149de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall /// LLVM type for C intptr_t. 15249de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall llvm::IntegerType *IntPtrTy; 15381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C ptrdiff_t. Mainly used in property accessor functions. 1542acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::IntegerType *PtrDiffTy; 15581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C int*. Used for GCC-ABI-compatible non-fragile instance 15681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// variables. 1572acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *PtrToIntTy; 15881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for Objective-C BOOL type. 1592acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *BoolTy; 160917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// 32-bit integer type, to save us needing to look it up every time it's used. 161917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::IntegerType *Int32Ty; 162917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// 64-bit integer type, to save us needing to look it up every time it's used. 163917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::IntegerType *Int64Ty; 16481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Metadata kind used to tie method lookups to message sends. The GNUstep 16581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// runtime provides some LLVM passes that can use this to do things like 16681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// automatic IMP caching and speculative inlining. 167c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall unsigned msgSendMDKind; 16881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Helper function that generates a constant string and returns a pointer to 16981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// the start of the string. The result of this function can be used anywhere 17081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// where the C code specifies const char*. 1719735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *MakeConstantString(const std::string &Str, 1729735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall const std::string &Name="") { 1739735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *ConstStr = CGM.GetAddrOfConstantCString(Str, Name.c_str()); 174a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros); 1759735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 17681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Emits a linkonce_odr string, whose name is the prefix followed by the 17781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// string value. This allows the linker to combine the strings between 17881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// different modules. Used for EH typeinfo names, selector strings, and a 17981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// few other things. 1809735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *ExportUniqueString(const std::string &Str, 1819735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall const std::string prefix) { 1829735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall std::string name = prefix + Str; 1839735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *ConstStr = TheModule.getGlobalVariable(name); 1849735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall if (!ConstStr) { 18594010695f7fce626e41ef045b60def9c912e9ce8Chris Lattner llvm::Constant *value = llvm::ConstantDataArray::getString(VMContext,Str); 1869735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall ConstStr = new llvm::GlobalVariable(TheModule, value->getType(), true, 1879735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::GlobalValue::LinkOnceODRLinkage, value, prefix + Str); 1889735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 189a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros); 1909735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 19181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a global structure, initialized by the elements in the vector. 19281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The element types must match the types of the structure elements in the 19381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// first argument. 1942acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::GlobalVariable *MakeGlobal(llvm::StructType *Ty, 195cfa88f893915ceb8ae4ce2f17c46c24a4d67502fDmitri Gribenko ArrayRef<llvm::Constant *> V, 1965f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef Name="", 1979735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::GlobalValue::LinkageTypes linkage 1989735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall =llvm::GlobalValue::InternalLinkage) { 1999735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *C = llvm::ConstantStruct::get(Ty, V); 2009735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return new llvm::GlobalVariable(TheModule, Ty, false, 2019735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall linkage, C, Name); 2029735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 20381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a global array. The vector must contain the same number of 20481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// elements that the array type declares, of the type specified as the array 20581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// element type. 2062acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::GlobalVariable *MakeGlobal(llvm::ArrayType *Ty, 207cfa88f893915ceb8ae4ce2f17c46c24a4d67502fDmitri Gribenko ArrayRef<llvm::Constant *> V, 2085f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef Name="", 2099735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::GlobalValue::LinkageTypes linkage 2109735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall =llvm::GlobalValue::InternalLinkage) { 2119735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *C = llvm::ConstantArray::get(Ty, V); 2129735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return new llvm::GlobalVariable(TheModule, Ty, false, 2139735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall linkage, C, Name); 2149735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 21581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a global array, inferring the array type from the specified 21681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// element type and the size of the initialiser. 2172acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::GlobalVariable *MakeGlobalArray(llvm::Type *Ty, 218cfa88f893915ceb8ae4ce2f17c46c24a4d67502fDmitri Gribenko ArrayRef<llvm::Constant *> V, 2195f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef Name="", 2209735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::GlobalValue::LinkageTypes linkage 2219735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall =llvm::GlobalValue::InternalLinkage) { 2229735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::ArrayType *ArrayTy = llvm::ArrayType::get(Ty, V.size()); 2239735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return MakeGlobal(ArrayTy, V, Name, linkage); 2249735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 225891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall /// Returns a property name and encoding string. 226891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall llvm::Constant *MakePropertyEncodingString(const ObjCPropertyDecl *PD, 227891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall const Decl *Container) { 228891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall ObjCRuntime R = CGM.getLangOpts().ObjCRuntime; 229891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall if ((R.getKind() == ObjCRuntime::GNUstep) && 230891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall (R.getVersion() >= VersionTuple(1, 6))) { 231891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall std::string NameAndAttributes; 232891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall std::string TypeStr; 233891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall CGM.getContext().getObjCEncodingForPropertyDecl(PD, Container, TypeStr); 234891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall NameAndAttributes += '\0'; 235891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall NameAndAttributes += TypeStr.length() + 3; 236891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall NameAndAttributes += TypeStr; 237891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall NameAndAttributes += '\0'; 238891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall NameAndAttributes += PD->getNameAsString(); 239891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall return llvm::ConstantExpr::getGetElementPtr( 240891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall CGM.GetAddrOfConstantString(NameAndAttributes), Zeros); 241891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall } 242891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall return MakeConstantString(PD->getNameAsString()); 243891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall } 24481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Ensures that the value has the required type, by inserting a bitcast if 24581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// required. This function lets us avoid inserting bitcasts that are 24681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// redundant. 2472acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Value* EnforceType(CGBuilderTy B, llvm::Value *V, llvm::Type *Ty){ 248c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall if (V->getType() == Ty) return V; 249c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return B.CreateBitCast(V, Ty); 250c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 251c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Some zeros used for GEPs in lots of places. 252c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Constant *Zeros[2]; 25381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Null pointer value. Mainly used as a terminator in various arrays. 254c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Constant *NULLPtr; 25581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM context. 256c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::LLVMContext &VMContext; 257c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnallprivate: 25881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Placeholder for the class. Lots of things refer to the class before we've 25981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// actually emitted it. We use this alias as a placeholder, and then replace 26081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// it with a pointer to the class structure before finally emitting the 26181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// module. 2625efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *ClassPtrAlias; 26381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Placeholder for the metaclass. Lots of things refer to the class before 26481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// we've / actually emitted it. We use this alias as a placeholder, and then 26581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// replace / it with a pointer to the metaclass structure before finally 26681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// emitting the / module. 2675efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *MetaClassPtrAlias; 26881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the classes that have been generated for this compilation units. 26920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Classes; 27081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the categories that have been generated for this compilation units. 27120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Categories; 27281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the Objective-C constant strings that have been generated for this 27381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// compilation units. 27420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> ConstantStrings; 27581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Map from string values to Objective-C constant strings in the output. 27681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Used to prevent emitting Objective-C strings more than once. This should 27781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// not be required at all - CodeGenModule should manage this list. 27848272a078e54d501cb05edd797c54b8e82ceb520David Chisnall llvm::StringMap<llvm::Constant*> ObjCStrings; 27981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the protocols that have been declared. 28020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StringMap<llvm::Constant*> ExistingProtocols; 28181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// For each variant of a selector, we store the type encoding and a 28281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// placeholder value. For an untyped selector, the type will be the empty 28381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// string. Selector references are all done via the module's selector table, 28481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// so we create an alias as a placeholder and then replace it with the real 28581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// value later. 2869f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall typedef std::pair<std::string, llvm::GlobalAlias*> TypedSelector; 28781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Type of the selector map. This is roughly equivalent to the structure 28881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used in the GNUstep runtime, which maintains a list of all of the valid 28981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// types for a selector in a table. 2905f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner typedef llvm::DenseMap<Selector, SmallVector<TypedSelector, 2> > 2919f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorMap; 29281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// A map from selectors to selector types. This allows us to emit all 29381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// selectors of the same name and type together. 2949f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorMap SelectorTable; 2959f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 29681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Selectors related to memory management. When compiling in GC mode, we 29781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// omit these. 298ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Selector RetainSel, ReleaseSel, AutoreleaseSel; 29981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Runtime functions used for memory management in GC mode. Note that clang 30081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// supports code generation for calling these functions, but neither GNU 30181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// runtime actually supports this API properly yet. 3029f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction IvarAssignFn, StrongCastAssignFn, MemMoveFn, WeakReadFn, 3039f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall WeakAssignFn, GlobalAssignFn; 3049f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 30529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall typedef std::pair<std::string, std::string> ClassAliasPair; 30629254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall /// All classes that have aliases set for them. 30729254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall std::vector<ClassAliasPair> ClassAliases; 30829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 3099735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnallprotected: 31081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function used for throwing Objective-C exceptions. 3119f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction ExceptionThrowFn; 312809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// Function used for rethrowing exceptions, used at the end of \@finally or 313809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// \@synchronize blocks. 3149735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall LazyRuntimeFunction ExceptionReThrowFn; 31581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function called when entering a catch function. This is required for 31681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// differentiating Objective-C exceptions and foreign exceptions. 3179735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall LazyRuntimeFunction EnterCatchFn; 31881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function called when exiting from a catch block. Used to do exception 31981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// cleanup. 3209735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall LazyRuntimeFunction ExitCatchFn; 321809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// Function called when entering an \@synchronize block. Acquires the lock. 3229f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SyncEnterFn; 323809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// Function called when exiting an \@synchronize block. Releases the lock. 3249f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SyncExitFn; 3259f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 3269735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnallprivate: 3279735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall 32881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function called if fast enumeration detects that the collection is 32981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// modified during the update. 3309f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction EnumerationMutationFn; 33181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function for implementing synthesized property getters that return an 33281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// object. 3339f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction GetPropertyFn; 33481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function for implementing synthesized property setters that return an 33581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// object. 3369f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SetPropertyFn; 33781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function used for non-object declared property getters. 3389f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction GetStructPropertyFn; 33981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function used for non-object declared property setters. 3409f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SetStructPropertyFn; 3419f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 34281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The version of the runtime that this class targets. Must match the 34381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// version in the runtime. 344a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall int RuntimeVersion; 34581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The version of the protocol class. Used to differentiate between ObjC1 34681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// and ObjC2 protocols. Objective-C 1 protocols can not contain optional 34781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// components and can not contain declared properties. We always emit 34881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Objective-C 2 property structures, but we have to pretend that they're 34981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Objective-C 1 property structures when targeting the GCC runtime or it 35081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// will abort. 3519f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const int ProtocolVersion; 35220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovprivate: 35381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates an instance variable list structure. This is a structure 35481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// containing a size and an array of structures containing instance variable 35581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// metadata. This is used purely for introspection in the fragile ABI. In 35681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// the non-fragile ABI, it's used for instance variable fixup. 357795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling llvm::Constant *GenerateIvarList(ArrayRef<llvm::Constant *> IvarNames, 358795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> IvarTypes, 359795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> IvarOffsets); 36081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a method list structure. This is a structure containing a size 36181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// and an array of structures containing method metadata. 36281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// 36381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// This structure is used by both classes and categories, and contains a next 36481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// pointer allowing them to be chained together in a linked list. 3655f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner llvm::Constant *GenerateMethodList(const StringRef &ClassName, 3665f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const StringRef &CategoryName, 367795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<Selector> MethodSels, 368795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> MethodTypes, 36920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList); 370809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// Emits an empty protocol. This is used for \@protocol() where no protocol 37181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// is found. The runtime will (hopefully) fix up the pointer to refer to the 37281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// real protocol. 373f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *GenerateEmptyProtocol(const std::string &ProtocolName); 37481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a list of property metadata structures. This follows the same 37581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// pattern as method and instance variable metadata lists. 376d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *GeneratePropertyList(const ObjCImplementationDecl *OID, 3775f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<Selector> &InstanceMethodSels, 3785f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<llvm::Constant*> &InstanceMethodTypes); 37981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a list of referenced protocols. Classes, categories, and 38081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// protocols all use this structure. 381795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling llvm::Constant *GenerateProtocolList(ArrayRef<std::string> Protocols); 38281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// To ensure that all protocols are seen by the runtime, we add a category on 38381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// a class defined in the runtime, declaring no methods, but adopting the 38481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// protocols. This is a horribly ugly hack, but it allows us to collect all 38581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// of the protocols without changing the ABI. 386c4a77906c259cba58c147d8468c406a430ecdcbbDmitri Gribenko void GenerateProtocolHolderCategory(); 38781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a class structure. 38820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateClassStructure( 38920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 39020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 39120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 392d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 39320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 39420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 39520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 39620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 397d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Protocols, 398d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *IvarOffsets, 3998c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall llvm::Constant *Properties, 400917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *StrongIvarBitmap, 401917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *WeakIvarBitmap, 4028c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall bool isMeta=false); 40381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a method list. This is used by protocols to define the required 40481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// and optional methods. 40520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolMethodList( 406795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> MethodNames, 407795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> MethodTypes); 40881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Returns a selector with the specified type encoding. An empty string is 40981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used to return an untyped selector (with the types field set to NULL). 4109f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Value *GetSelector(CGBuilderTy &Builder, Selector Sel, 4119f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const std::string &TypeEncoding, bool lval); 41281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Returns the variable used to store the offset of an instance variable. 4139cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::GlobalVariable *ObjCIvarOffsetVariable(const ObjCInterfaceDecl *ID, 4149cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar); 41581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Emits a reference to a class. This allows the linker to object if there 41681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// is no class of the matching name. 417f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCallprotected: 4182a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner void EmitClassRef(const std::string &className); 419c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall /// Emits a pointer to the named class 420f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall virtual llvm::Value *GetClassNamed(CGBuilderTy &Builder, 421f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall const std::string &Name, bool isWeak); 42281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Looks up the method for sending a message to the specified object. This 42381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// mechanism differs between the GCC and GNU runtimes, so this method must be 42481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// overridden in subclasses. 425c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMP(CodeGenFunction &CGF, 426c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *&Receiver, 427c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd, 428c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDNode *node) = 0; 429917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// Looks up the method for sending a message to a superclass. This 430917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// mechanism differs between the GCC and GNU runtimes, so this method must 431917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// be overridden in subclasses. 432c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMPSuper(CodeGenFunction &CGF, 433c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ObjCSuper, 434c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd) = 0; 435917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// Libobjc2 uses a bitfield representation where small(ish) bitfields are 436917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// stored in a 64-bit value with the low bit set to 1 and the remaining 63 437917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// bits set to their values, LSB first, while larger ones are stored in a 438917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// structure of this / form: 439917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// 440917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// struct { int32_t length; int32_t values[length]; }; 441917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// 442917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// The values in the array are stored in host-endian format, with the least 443917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// significant bit being assumed to come first in the bitfield. Therefore, 444917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// a bitfield with the 64th bit set will be (int64_t)&{ 2, [0, 1<<31] }, 445917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// while a bitfield / with the 63rd bit set will be 1<<64. 446795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling llvm::Constant *MakeBitField(ArrayRef<bool> bits); 4470f984268b05edab2cc555a427c441baa9c252658Chris Lattnerpublic: 4489f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CGObjCGNU(CodeGenModule &cgm, unsigned runtimeABIVersion, 4499f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall unsigned protocolClassVersion); 4509f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 4510d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall virtual llvm::Constant *GenerateConstantString(const StringLiteral *); 4529f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 4539f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual RValue 4549f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GenerateMessageSend(CodeGenFunction &CGF, 455ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 4567f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 4577f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 458f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 459df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 460c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall const ObjCInterfaceDecl *Class, 461df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method); 4629f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual RValue 4639f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GenerateMessageSendSuper(CodeGenFunction &CGF, 464ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 4657f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 4667f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 467f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 4687ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 469f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 47019cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 471d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const CallArgList &CallArgs, 472d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const ObjCMethodDecl *Method); 47345d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GetClass(CGBuilderTy &Builder, 474ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar const ObjCInterfaceDecl *OID); 47503b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanian virtual llvm::Value *GetSelector(CGBuilderTy &Builder, Selector Sel, 47603b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanian bool lval = false); 4776d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar virtual llvm::Value *GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 4786d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar *Method); 479cf5abc7ba032bd35158e4d75b0bc92a482fc67e8Fariborz Jahanian virtual llvm::Constant *GetEHType(QualType T); 4801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump virtual llvm::Function *GenerateMethod(const ObjCMethodDecl *OMD, 482679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian const ObjCContainerDecl *CD); 4837ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateCategory(const ObjCCategoryImplDecl *CMD); 4847ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateClass(const ObjCImplementationDecl *ClassDecl); 48529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall virtual void RegisterAlias(const ObjCCompatibleAliasDecl *OAD); 48645d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GenerateProtocolRef(CGBuilderTy &Builder, 487af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD); 488af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar virtual void GenerateProtocol(const ObjCProtocolDecl *PD); 48920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual llvm::Function *ModuleInitFunction(); 490789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetPropertyGetFunction(); 491789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetPropertySetFunction(); 492ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek virtual llvm::Constant *GetOptimizedPropertySetFunction(bool atomic, 493ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool copy); 494789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetSetStructFunction(); 495789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetGetStructFunction(); 496d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall virtual llvm::Constant *GetCppAtomicObjectGetFunction(); 497d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall virtual llvm::Constant *GetCppAtomicObjectSetFunction(); 498309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar virtual llvm::Constant *EnumerationMutationFunction(); 4991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5009f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitTryStmt(CodeGenFunction &CGF, 501f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtTryStmt &S); 5029f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitSynchronizedStmt(CodeGenFunction &CGF, 503f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtSynchronizedStmt &S); 5049f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitThrowStmt(CodeGenFunction &CGF, 5056a3c70ec59804347c99e96aa13934f63f4fed573Fariborz Jahanian const ObjCAtThrowStmt &S, 5066a3c70ec59804347c99e96aa13934f63f4fed573Fariborz Jahanian bool ClearInsertionPoint=true); 5079f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual llvm::Value * EmitObjCWeakRead(CodeGenFunction &CGF, 5086dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian llvm::Value *AddrWeakObj); 5099f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCWeakAssign(CodeGenFunction &CGF, 5103e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian llvm::Value *src, llvm::Value *dst); 5119f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCGlobalAssign(CodeGenFunction &CGF, 512021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian llvm::Value *src, llvm::Value *dest, 513021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian bool threadlocal=false); 5149f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCIvarAssign(CodeGenFunction &CGF, 5156c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *src, llvm::Value *dest, 5166c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *ivarOffset); 5179f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCStrongCastAssign(CodeGenFunction &CGF, 51858626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dest); 5199f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitGCMemmoveCollectable(CodeGenFunction &CGF, 5201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *DestPtr, 521082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *SrcPtr, 52255bcace250e1ff366e4482714b344b8cbc8be5f3Fariborz Jahanian llvm::Value *Size); 5239f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual LValue EmitObjCValueForIvar(CodeGenFunction &CGF, 524598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 525598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 526598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 527598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers); 5289f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual llvm::Value *EmitIvarOffset(CodeGenFunction &CGF, 5292a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 530f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar); 531c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall virtual llvm::Value *EmitNSAutoreleasePoolClassRef(CGBuilderTy &Builder); 5329f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual llvm::Constant *BuildGCBlockLayout(CodeGenModule &CGM, 5336b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall const CGBlockInfo &blockInfo) { 53489ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian return NULLPtr; 53589ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian } 536c46b43517a18c8f41934a38a3580bd477ab54265Fariborz Jahanian virtual llvm::Constant *BuildRCBlockLayout(CodeGenModule &CGM, 537c46b43517a18c8f41934a38a3580bd477ab54265Fariborz Jahanian const CGBlockInfo &blockInfo) { 538c46b43517a18c8f41934a38a3580bd477ab54265Fariborz Jahanian return NULLPtr; 539c46b43517a18c8f41934a38a3580bd477ab54265Fariborz Jahanian } 5403ca23d7dc6cb61e6f363a58d9256d548199d120cFariborz Jahanian 5413ca23d7dc6cb61e6f363a58d9256d548199d120cFariborz Jahanian virtual llvm::Constant *BuildByrefLayout(CodeGenModule &CGM, 5423ca23d7dc6cb61e6f363a58d9256d548199d120cFariborz Jahanian QualType T) { 5433ca23d7dc6cb61e6f363a58d9256d548199d120cFariborz Jahanian return NULLPtr; 5443ca23d7dc6cb61e6f363a58d9256d548199d120cFariborz Jahanian } 5453ca23d7dc6cb61e6f363a58d9256d548199d120cFariborz Jahanian 5466f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian virtual llvm::GlobalVariable *GetClassGlobal(const std::string &Name) { 5476f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian return 0; 5486f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian } 5490f984268b05edab2cc555a427c441baa9c252658Chris Lattner}; 55081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// Class representing the legacy GCC Objective-C ABI. This is the default when 55181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// -fobjc-nonfragile-abi is not specified. 55281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// 55381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// The GCC ABI target actually generates code that is approximately compatible 55481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// with the new GNUstep runtime ABI, but refrains from using any features that 55581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// would not work with the GCC runtime. For example, clang always generates 55681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// the extended form of the class structure, and the extra fields are simply 55781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// ignored by GCC libobjc. 5589f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass CGObjCGCC : public CGObjCGNU { 55981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The GCC ABI message lookup function. Returns an IMP pointing to the 56081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// method implementation for this message. 561c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction MsgLookupFn; 56281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The GCC ABI superclass message lookup function. Takes a pointer to a 56381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// structure describing the receiver and the class, and a selector as 56481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// arguments. Returns the IMP for the corresponding method. 565c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction MsgLookupSuperFn; 566c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnallprotected: 567c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMP(CodeGenFunction &CGF, 568c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *&Receiver, 569c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd, 570c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDNode *node) { 571c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 5726f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall llvm::Value *args[] = { 573c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall EnforceType(Builder, Receiver, IdTy), 5746f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall EnforceType(Builder, cmd, SelectorTy) }; 5756f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall llvm::CallSite imp = CGF.EmitCallOrInvoke(MsgLookupFn, args); 5766f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall imp->setMetadata(msgSendMDKind, node); 5776f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall return imp.getInstruction(); 578c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 579c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMPSuper(CodeGenFunction &CGF, 580c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ObjCSuper, 581c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd) { 582c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 583c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *lookupArgs[] = {EnforceType(Builder, ObjCSuper, 584c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy), cmd}; 5854c7d9f1507d0f102bd4133bba63348636facd469Jay Foad return Builder.CreateCall(MsgLookupSuperFn, lookupArgs); 586c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 5879f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall public: 588c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGObjCGCC(CodeGenModule &Mod) : CGObjCGNU(Mod, 8, 2) { 589c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // IMP objc_msg_lookup(id, SEL); 590c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall MsgLookupFn.init(&CGM, "objc_msg_lookup", IMPTy, IdTy, SelectorTy, NULL); 591c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // IMP objc_msg_lookup_super(struct objc_super*, SEL); 592c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall MsgLookupSuperFn.init(&CGM, "objc_msg_lookup_super", IMPTy, 593c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy, SelectorTy, NULL); 594c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 5959f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall}; 59681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// Class used when targeting the new GNUstep runtime ABI. 5979f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass CGObjCGNUstep : public CGObjCGNU { 59881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The slot lookup function. Returns a pointer to a cacheable structure 59981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// that contains (among other things) the IMP. 600c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction SlotLookupFn; 60181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The GNUstep ABI superclass message lookup function. Takes a pointer to 60281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// a structure describing the receiver and the class, and a selector as 60381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// arguments. Returns the slot for the corresponding method. Superclass 60481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// message lookup rarely changes, so this is a good caching opportunity. 605c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction SlotLookupSuperFn; 606d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall /// Specialised function for setting atomic retain properties 607d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall LazyRuntimeFunction SetPropertyAtomic; 608d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall /// Specialised function for setting atomic copy properties 609d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall LazyRuntimeFunction SetPropertyAtomicCopy; 610d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall /// Specialised function for setting nonatomic retain properties 611d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall LazyRuntimeFunction SetPropertyNonAtomic; 612d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall /// Specialised function for setting nonatomic copy properties 613d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall LazyRuntimeFunction SetPropertyNonAtomicCopy; 614d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall /// Function to perform atomic copies of C++ objects with nontrivial copy 615d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall /// constructors from Objective-C ivars. 616d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall LazyRuntimeFunction CxxAtomicObjectGetFn; 617d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall /// Function to perform atomic copies of C++ objects with nontrivial copy 618d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall /// constructors to Objective-C ivars. 619d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall LazyRuntimeFunction CxxAtomicObjectSetFn; 62081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Type of an slot structure pointer. This is returned by the various 62181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// lookup functions. 622c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Type *SlotTy; 6232b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall public: 6242b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall virtual llvm::Constant *GetEHType(QualType T); 625c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall protected: 626c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMP(CodeGenFunction &CGF, 627c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *&Receiver, 628c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd, 629c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDNode *node) { 630c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 631c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Function *LookupFn = SlotLookupFn; 632c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 633c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Store the receiver on the stack so that we can reload it later 634c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ReceiverPtr = CGF.CreateTempAlloca(Receiver->getType()); 635c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Builder.CreateStore(Receiver, ReceiverPtr); 636c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 637c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *self; 638c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 639c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall if (isa<ObjCMethodDecl>(CGF.CurCodeDecl)) { 640c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall self = CGF.LoadObjCSelf(); 641c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } else { 642c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall self = llvm::ConstantPointerNull::get(IdTy); 643c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 644c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 645c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // The lookup function is guaranteed not to capture the receiver pointer. 646c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LookupFn->setDoesNotCapture(1); 647c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 6486f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall llvm::Value *args[] = { 649c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall EnforceType(Builder, ReceiverPtr, PtrToIdTy), 650c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall EnforceType(Builder, cmd, SelectorTy), 6516f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall EnforceType(Builder, self, IdTy) }; 6526f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall llvm::CallSite slot = CGF.EmitCallOrInvoke(LookupFn, args); 6536f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall slot.setOnlyReadsMemory(); 654c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall slot->setMetadata(msgSendMDKind, node); 655c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 656c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Load the imp from the slot 6576f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall llvm::Value *imp = 6586f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall Builder.CreateLoad(Builder.CreateStructGEP(slot.getInstruction(), 4)); 659c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 660c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // The lookup function may have changed the receiver, so make sure we use 661c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // the new one. 662c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Receiver = Builder.CreateLoad(ReceiverPtr, true); 663c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return imp; 664c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 665c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMPSuper(CodeGenFunction &CGF, 666c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ObjCSuper, 667c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd) { 668c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 669c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *lookupArgs[] = {ObjCSuper, cmd}; 670c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 6714c7d9f1507d0f102bd4133bba63348636facd469Jay Foad llvm::CallInst *slot = Builder.CreateCall(SlotLookupSuperFn, lookupArgs); 672c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall slot->setOnlyReadsMemory(); 673c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 674c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return Builder.CreateLoad(Builder.CreateStructGEP(slot, 4)); 675c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 6769f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall public: 677c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGObjCGNUstep(CodeGenModule &Mod) : CGObjCGNU(Mod, 9, 3) { 67865bd4ac6ffbf6de30cd6f36735539ff8172a904aDavid Chisnall ObjCRuntime R = CGM.getLangOpts().ObjCRuntime; 67965bd4ac6ffbf6de30cd6f36735539ff8172a904aDavid Chisnall 6807650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *SlotStructTy = llvm::StructType::get(PtrTy, 681c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrTy, PtrTy, IntTy, IMPTy, NULL); 682c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SlotTy = llvm::PointerType::getUnqual(SlotStructTy); 683c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Slot_t objc_msg_lookup_sender(id *receiver, SEL selector, id sender); 684c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SlotLookupFn.init(&CGM, "objc_msg_lookup_sender", SlotTy, PtrToIdTy, 685c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SelectorTy, IdTy, NULL); 686c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Slot_t objc_msg_lookup_super(struct objc_super*, SEL); 687c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SlotLookupSuperFn.init(&CGM, "objc_slot_lookup_super", SlotTy, 688c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy, SelectorTy, NULL); 6899735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // If we're in ObjC++ mode, then we want to make 6904e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (CGM.getLangOpts().CPlusPlus) { 6919cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext); 6929735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // void *__cxa_begin_catch(void *e) 6939735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall EnterCatchFn.init(&CGM, "__cxa_begin_catch", PtrTy, PtrTy, NULL); 6949735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // void __cxa_end_catch(void) 6954bd5d09e3a233ed23ec6f913166e4b75d8de215cDavid Chisnall ExitCatchFn.init(&CGM, "__cxa_end_catch", VoidTy, NULL); 6969735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // void _Unwind_Resume_or_Rethrow(void*) 697d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall ExceptionReThrowFn.init(&CGM, "_Unwind_Resume_or_Rethrow", VoidTy, 698d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall PtrTy, NULL); 69965bd4ac6ffbf6de30cd6f36735539ff8172a904aDavid Chisnall } else if (R.getVersion() >= VersionTuple(1, 7)) { 70065bd4ac6ffbf6de30cd6f36735539ff8172a904aDavid Chisnall llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext); 70165bd4ac6ffbf6de30cd6f36735539ff8172a904aDavid Chisnall // id objc_begin_catch(void *e) 70265bd4ac6ffbf6de30cd6f36735539ff8172a904aDavid Chisnall EnterCatchFn.init(&CGM, "objc_begin_catch", IdTy, PtrTy, NULL); 70365bd4ac6ffbf6de30cd6f36735539ff8172a904aDavid Chisnall // void objc_end_catch(void) 70465bd4ac6ffbf6de30cd6f36735539ff8172a904aDavid Chisnall ExitCatchFn.init(&CGM, "objc_end_catch", VoidTy, NULL); 70565bd4ac6ffbf6de30cd6f36735539ff8172a904aDavid Chisnall // void _Unwind_Resume_or_Rethrow(void*) 70665bd4ac6ffbf6de30cd6f36735539ff8172a904aDavid Chisnall ExceptionReThrowFn.init(&CGM, "objc_exception_rethrow", VoidTy, 70765bd4ac6ffbf6de30cd6f36735539ff8172a904aDavid Chisnall PtrTy, NULL); 7089735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 709d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext); 710d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall SetPropertyAtomic.init(&CGM, "objc_setProperty_atomic", VoidTy, IdTy, 711d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall SelectorTy, IdTy, PtrDiffTy, NULL); 712d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall SetPropertyAtomicCopy.init(&CGM, "objc_setProperty_atomic_copy", VoidTy, 713d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall IdTy, SelectorTy, IdTy, PtrDiffTy, NULL); 714d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall SetPropertyNonAtomic.init(&CGM, "objc_setProperty_nonatomic", VoidTy, 715d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall IdTy, SelectorTy, IdTy, PtrDiffTy, NULL); 716d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall SetPropertyNonAtomicCopy.init(&CGM, "objc_setProperty_nonatomic_copy", 717d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall VoidTy, IdTy, SelectorTy, IdTy, PtrDiffTy, NULL); 718d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall // void objc_setCppObjectAtomic(void *dest, const void *src, void 719d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall // *helper); 720d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall CxxAtomicObjectSetFn.init(&CGM, "objc_setCppObjectAtomic", VoidTy, PtrTy, 721d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall PtrTy, PtrTy, NULL); 722d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall // void objc_getCppObjectAtomic(void *dest, const void *src, void 723d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall // *helper); 724d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall CxxAtomicObjectGetFn.init(&CGM, "objc_getCppObjectAtomic", VoidTy, PtrTy, 725d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall PtrTy, PtrTy, NULL); 726d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall } 727d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall virtual llvm::Constant *GetCppAtomicObjectGetFunction() { 728d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall // The optimised functions were added in version 1.7 of the GNUstep 729d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall // runtime. 730d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall assert (CGM.getLangOpts().ObjCRuntime.getVersion() >= 731d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall VersionTuple(1, 7)); 732d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall return CxxAtomicObjectGetFn; 733d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall } 734d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall virtual llvm::Constant *GetCppAtomicObjectSetFunction() { 735d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall // The optimised functions were added in version 1.7 of the GNUstep 736d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall // runtime. 737d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall assert (CGM.getLangOpts().ObjCRuntime.getVersion() >= 738d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall VersionTuple(1, 7)); 739d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall return CxxAtomicObjectSetFn; 740d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall } 741d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall virtual llvm::Constant *GetOptimizedPropertySetFunction(bool atomic, 742d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall bool copy) { 743d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall // The optimised property functions omit the GC check, and so are not 744d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall // safe to use in GC mode. The standard functions are fast in GC mode, 745d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall // so there is less advantage in using them. 746d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall assert ((CGM.getLangOpts().getGC() == LangOptions::NonGC)); 747d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall // The optimised functions were added in version 1.7 of the GNUstep 748d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall // runtime. 749d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall assert (CGM.getLangOpts().ObjCRuntime.getVersion() >= 750d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall VersionTuple(1, 7)); 751d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall 752d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall if (atomic) { 753d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall if (copy) return SetPropertyAtomicCopy; 754d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall return SetPropertyAtomic; 755d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall } 756d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall if (copy) return SetPropertyNonAtomicCopy; 757d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall return SetPropertyNonAtomic; 758d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall 759d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall return 0; 760c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 7619f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall}; 7629f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 7630a7dd788dbef975f35f273c7ab913f480f7edd60John McCall/// Support for the ObjFW runtime. Support here is due to 7640a7dd788dbef975f35f273c7ab913f480f7edd60John McCall/// Jonathan Schleifer <js@webkeks.org>, the ObjFW maintainer. 7650a7dd788dbef975f35f273c7ab913f480f7edd60John McCallclass CGObjCObjFW: public CGObjCGNU { 7660a7dd788dbef975f35f273c7ab913f480f7edd60John McCallprotected: 7670a7dd788dbef975f35f273c7ab913f480f7edd60John McCall /// The GCC ABI message lookup function. Returns an IMP pointing to the 7680a7dd788dbef975f35f273c7ab913f480f7edd60John McCall /// method implementation for this message. 7690a7dd788dbef975f35f273c7ab913f480f7edd60John McCall LazyRuntimeFunction MsgLookupFn; 7700a7dd788dbef975f35f273c7ab913f480f7edd60John McCall /// The GCC ABI superclass message lookup function. Takes a pointer to a 7710a7dd788dbef975f35f273c7ab913f480f7edd60John McCall /// structure describing the receiver and the class, and a selector as 7720a7dd788dbef975f35f273c7ab913f480f7edd60John McCall /// arguments. Returns the IMP for the corresponding method. 7730a7dd788dbef975f35f273c7ab913f480f7edd60John McCall LazyRuntimeFunction MsgLookupSuperFn; 7740a7dd788dbef975f35f273c7ab913f480f7edd60John McCall 7750a7dd788dbef975f35f273c7ab913f480f7edd60John McCall virtual llvm::Value *LookupIMP(CodeGenFunction &CGF, 7760a7dd788dbef975f35f273c7ab913f480f7edd60John McCall llvm::Value *&Receiver, 7770a7dd788dbef975f35f273c7ab913f480f7edd60John McCall llvm::Value *cmd, 7780a7dd788dbef975f35f273c7ab913f480f7edd60John McCall llvm::MDNode *node) { 7790a7dd788dbef975f35f273c7ab913f480f7edd60John McCall CGBuilderTy &Builder = CGF.Builder; 7800a7dd788dbef975f35f273c7ab913f480f7edd60John McCall llvm::Value *args[] = { 7810a7dd788dbef975f35f273c7ab913f480f7edd60John McCall EnforceType(Builder, Receiver, IdTy), 7820a7dd788dbef975f35f273c7ab913f480f7edd60John McCall EnforceType(Builder, cmd, SelectorTy) }; 7830a7dd788dbef975f35f273c7ab913f480f7edd60John McCall llvm::CallSite imp = CGF.EmitCallOrInvoke(MsgLookupFn, args); 7840a7dd788dbef975f35f273c7ab913f480f7edd60John McCall imp->setMetadata(msgSendMDKind, node); 7850a7dd788dbef975f35f273c7ab913f480f7edd60John McCall return imp.getInstruction(); 7860a7dd788dbef975f35f273c7ab913f480f7edd60John McCall } 7870a7dd788dbef975f35f273c7ab913f480f7edd60John McCall 7880a7dd788dbef975f35f273c7ab913f480f7edd60John McCall virtual llvm::Value *LookupIMPSuper(CodeGenFunction &CGF, 7890a7dd788dbef975f35f273c7ab913f480f7edd60John McCall llvm::Value *ObjCSuper, 7900a7dd788dbef975f35f273c7ab913f480f7edd60John McCall llvm::Value *cmd) { 7910a7dd788dbef975f35f273c7ab913f480f7edd60John McCall CGBuilderTy &Builder = CGF.Builder; 7920a7dd788dbef975f35f273c7ab913f480f7edd60John McCall llvm::Value *lookupArgs[] = {EnforceType(Builder, ObjCSuper, 7930a7dd788dbef975f35f273c7ab913f480f7edd60John McCall PtrToObjCSuperTy), cmd}; 7940a7dd788dbef975f35f273c7ab913f480f7edd60John McCall return Builder.CreateCall(MsgLookupSuperFn, lookupArgs); 7950a7dd788dbef975f35f273c7ab913f480f7edd60John McCall } 7960a7dd788dbef975f35f273c7ab913f480f7edd60John McCall 797f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall virtual llvm::Value *GetClassNamed(CGBuilderTy &Builder, 798f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall const std::string &Name, bool isWeak) { 799f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall if (isWeak) 800f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall return CGObjCGNU::GetClassNamed(Builder, Name, isWeak); 801f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 802f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall EmitClassRef(Name); 803f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 804f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall std::string SymbolName = "_OBJC_CLASS_" + Name; 805f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 806f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall llvm::GlobalVariable *ClassSymbol = TheModule.getGlobalVariable(SymbolName); 807f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 808f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall if (!ClassSymbol) 809f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall ClassSymbol = new llvm::GlobalVariable(TheModule, LongTy, false, 810f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall llvm::GlobalValue::ExternalLinkage, 811f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 0, SymbolName); 812f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 813f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall return ClassSymbol; 814f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall } 815f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 816f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCallpublic: 8170a7dd788dbef975f35f273c7ab913f480f7edd60John McCall CGObjCObjFW(CodeGenModule &Mod): CGObjCGNU(Mod, 9, 3) { 8180a7dd788dbef975f35f273c7ab913f480f7edd60John McCall // IMP objc_msg_lookup(id, SEL); 8190a7dd788dbef975f35f273c7ab913f480f7edd60John McCall MsgLookupFn.init(&CGM, "objc_msg_lookup", IMPTy, IdTy, SelectorTy, NULL); 8200a7dd788dbef975f35f273c7ab913f480f7edd60John McCall // IMP objc_msg_lookup_super(struct objc_super*, SEL); 8210a7dd788dbef975f35f273c7ab913f480f7edd60John McCall MsgLookupSuperFn.init(&CGM, "objc_msg_lookup_super", IMPTy, 8220a7dd788dbef975f35f273c7ab913f480f7edd60John McCall PtrToObjCSuperTy, SelectorTy, NULL); 8230a7dd788dbef975f35f273c7ab913f480f7edd60John McCall } 824f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall}; 8250f984268b05edab2cc555a427c441baa9c252658Chris Lattner} // end anonymous namespace 8260f984268b05edab2cc555a427c441baa9c252658Chris Lattner 82720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 8282a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// Emits a reference to a dummy variable which is emitted with each class. 8292a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// This ensures that a linker error will be generated when trying to link 8302a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// together modules where a referenced class is not defined. 831bb1c8600218b3244340331165fc7cba7bf227655Mike Stumpvoid CGObjCGNU::EmitClassRef(const std::string &className) { 8322a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner std::string symbolRef = "__objc_class_ref_" + className; 8332a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // Don't emit two copies of the same symbol 834bb1c8600218b3244340331165fc7cba7bf227655Mike Stump if (TheModule.getGlobalVariable(symbolRef)) 835bb1c8600218b3244340331165fc7cba7bf227655Mike Stump return; 8362a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner std::string symbolName = "__objc_class_name_" + className; 8372a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner llvm::GlobalVariable *ClassSymbol = TheModule.getGlobalVariable(symbolName); 8382a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (!ClassSymbol) { 8391c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson ClassSymbol = new llvm::GlobalVariable(TheModule, LongTy, false, 8401c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::GlobalValue::ExternalLinkage, 0, symbolName); 8412a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 8421c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, ClassSymbol->getType(), true, 843f35271b8677a5f31498b89587b1da42a06dd46fdChris Lattner llvm::GlobalValue::WeakAnyLinkage, ClassSymbol, symbolRef); 8442a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner} 84520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 8465f9e272e632e951b1efe824cd16acb4d96077930Chris Lattnerstatic std::string SymbolNameForMethod(const StringRef &ClassName, 8475f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const StringRef &CategoryName, const Selector MethodName, 8489f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall bool isClassMethod) { 8499f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string MethodNameColonStripped = MethodName.getAsString(); 850d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall std::replace(MethodNameColonStripped.begin(), MethodNameColonStripped.end(), 851d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall ':', '_'); 8525f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner return (Twine(isClassMethod ? "_c_" : "_i_") + ClassName + "_" + 8539f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CategoryName + "_" + MethodNameColonStripped).str(); 85487935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall} 85520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 8569f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCGNU::CGObjCGNU(CodeGenModule &cgm, unsigned runtimeABIVersion, 8579f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall unsigned protocolClassVersion) 858de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall : CGObjCRuntime(cgm), TheModule(CGM.getModule()), 859de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall VMContext(cgm.getLLVMContext()), ClassPtrAlias(0), MetaClassPtrAlias(0), 860de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall RuntimeVersion(runtimeABIVersion), ProtocolVersion(protocolClassVersion) { 861c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall 862c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall msgSendMDKind = VMContext.getMDKindID("GNUObjCMessageSend"); 863c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall 8649f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CodeGenTypes &Types = CGM.getTypes(); 865e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner IntTy = cast<llvm::IntegerType>( 8669f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().IntTy)); 867e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner LongTy = cast<llvm::IntegerType>( 8689f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().LongTy)); 8698fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall SizeTy = cast<llvm::IntegerType>( 8709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().getSizeType())); 8718fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall PtrDiffTy = cast<llvm::IntegerType>( 8729f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().getPointerDiffType())); 8738fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall BoolTy = CGM.getTypes().ConvertType(CGM.getContext().BoolTy); 8741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 875d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Int8Ty = llvm::Type::getInt8Ty(VMContext); 876d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // C string type. Used in lots of places. 877d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty = llvm::PointerType::getUnqual(Int8Ty); 878d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 8794a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Zeros[0] = llvm::ConstantInt::get(LongTy, 0); 88020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros[1] = Zeros[0]; 881d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NULLPtr = llvm::ConstantPointerNull::get(PtrToInt8Ty); 882391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Get the selector Type. 8830d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall QualType selTy = CGM.getContext().getObjCSelType(); 8840d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall if (QualType() == selTy) { 8850d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall SelectorTy = PtrToInt8Ty; 8860d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } else { 8870d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall SelectorTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(selTy)); 8880d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } 889e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 89096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson PtrToIntTy = llvm::PointerType::getUnqual(IntTy); 891391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrTy = PtrToInt8Ty; 8921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 893917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Int32Ty = llvm::Type::getInt32Ty(VMContext); 894917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Int64Ty = llvm::Type::getInt64Ty(VMContext); 895917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall 89649de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall IntPtrTy = 89749de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall TheModule.getPointerSize() == llvm::Module::Pointer32 ? Int32Ty : Int64Ty; 89849de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall 899391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Object type 9007bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall QualType UnqualIdTy = CGM.getContext().getObjCIdType(); 9017bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall ASTIdTy = CanQualType(); 9027bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall if (UnqualIdTy != QualType()) { 9037bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall ASTIdTy = CGM.getContext().getCanonicalType(UnqualIdTy); 9040d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall IdTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(ASTIdTy)); 9057bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall } else { 9067bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall IdTy = PtrToInt8Ty; 9070d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } 908ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall PtrToIdTy = llvm::PointerType::getUnqual(IdTy); 9091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9107650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner ObjCSuperTy = llvm::StructType::get(IdTy, IdTy, NULL); 911c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy = llvm::PointerType::getUnqual(ObjCSuperTy); 912c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 9139cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext); 9149f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 9159f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_exception_throw(id); 9169f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ExceptionThrowFn.init(&CGM, "objc_exception_throw", VoidTy, IdTy, NULL); 9179735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall ExceptionReThrowFn.init(&CGM, "objc_exception_throw", VoidTy, IdTy, NULL); 9189f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // int objc_sync_enter(id); 9199f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SyncEnterFn.init(&CGM, "objc_sync_enter", IntTy, IdTy, NULL); 9209f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // int objc_sync_exit(id); 9219f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SyncExitFn.init(&CGM, "objc_sync_exit", IntTy, IdTy, NULL); 9229f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 9239f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_enumerationMutation (id) 9249f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall EnumerationMutationFn.init(&CGM, "objc_enumerationMutation", VoidTy, 9259f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall IdTy, NULL); 9269f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 9279f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // id objc_getProperty(id, SEL, ptrdiff_t, BOOL) 9289f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GetPropertyFn.init(&CGM, "objc_getProperty", IdTy, IdTy, SelectorTy, 9299f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, BoolTy, NULL); 9309f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_setProperty(id, SEL, ptrdiff_t, id, BOOL, BOOL) 9319f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SetPropertyFn.init(&CGM, "objc_setProperty", VoidTy, IdTy, SelectorTy, 9329f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, IdTy, BoolTy, BoolTy, NULL); 9339f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_setPropertyStruct(void*, void*, ptrdiff_t, BOOL, BOOL) 9349f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GetStructPropertyFn.init(&CGM, "objc_getPropertyStruct", VoidTy, PtrTy, PtrTy, 9359f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, BoolTy, BoolTy, NULL); 9369f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_setPropertyStruct(void*, void*, ptrdiff_t, BOOL, BOOL) 9379f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SetStructPropertyFn.init(&CGM, "objc_setPropertyStruct", VoidTy, PtrTy, PtrTy, 9389f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, BoolTy, BoolTy, NULL); 9399f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 940391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // IMP type 9419cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *IMPArgs[] = { IdTy, SelectorTy }; 942c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall IMPTy = llvm::PointerType::getUnqual(llvm::FunctionType::get(IdTy, IMPArgs, 943c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall true)); 944ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 9454e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie const LangOptions &Opts = CGM.getLangOpts(); 946e289d81369914678db386f6aa86faf8f178e245dDouglas Gregor if ((Opts.getGC() != LangOptions::NonGC) || Opts.ObjCAutoRefCount) 947f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall RuntimeVersion = 10; 948f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall 9499735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // Don't bother initialising the GC stuff unless we're compiling in GC mode 950e289d81369914678db386f6aa86faf8f178e245dDouglas Gregor if (Opts.getGC() != LangOptions::NonGC) { 951a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall // This is a bit of an hack. We should sort this out by having a proper 952a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall // CGObjCGNUstep subclass for GC, but we may want to really support the old 953a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall // ABI and GC added in ObjectiveC2.framework, so we fudge it a bit for now 954ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // Get selectors needed in GC mode 955ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall RetainSel = GetNullarySelector("retain", CGM.getContext()); 956ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall ReleaseSel = GetNullarySelector("release", CGM.getContext()); 957ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall AutoreleaseSel = GetNullarySelector("autorelease", CGM.getContext()); 958ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 959ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // Get functions needed in GC mode 960ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 961ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_ivar(id, id, ptrdiff_t); 9629f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall IvarAssignFn.init(&CGM, "objc_assign_ivar", IdTy, IdTy, IdTy, PtrDiffTy, 9639f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall NULL); 964ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_strongCast (id, id*) 9659f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall StrongCastAssignFn.init(&CGM, "objc_assign_strongCast", IdTy, IdTy, 9669f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrToIdTy, NULL); 967ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_global(id, id*); 9689f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GlobalAssignFn.init(&CGM, "objc_assign_global", IdTy, IdTy, PtrToIdTy, 9699f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall NULL); 970ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_weak(id, id*); 9719f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall WeakAssignFn.init(&CGM, "objc_assign_weak", IdTy, IdTy, PtrToIdTy, NULL); 972ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_read_weak(id*); 9739f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall WeakReadFn.init(&CGM, "objc_read_weak", IdTy, PtrToIdTy, NULL); 974ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // void *objc_memmove_collectable(void*, void *, size_t); 9759f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall MemMoveFn.init(&CGM, "objc_memmove_collectable", PtrTy, PtrTy, PtrTy, 9769f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SizeTy, NULL); 977ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 97820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 979bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 980c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnallllvm::Value *CGObjCGNU::GetClassNamed(CGBuilderTy &Builder, 981d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall const std::string &Name, 982d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall bool isWeak) { 983c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall llvm::Value *ClassName = CGM.GetAddrOfConstantCString(Name); 98441d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // With the incompatible ABI, this will need to be replaced with a direct 98541d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // reference to the class symbol. For the compatible nonfragile ABI we are 98641d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // still performing this lookup at run time but emitting the symbol for the 98741d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // class externally so that we can make the switch later. 988c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall // 989c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall // Libobjc2 contains an LLVM pass that replaces calls to objc_lookup_class 990c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall // with memoized versions or with static references if it's safe to do so. 991d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall if (!isWeak) 992d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall EmitClassRef(Name); 993ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar ClassName = Builder.CreateStructGEP(ClassName, 0); 994ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar 99520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassLookupFn = 996da549e8995c447542d5631b8b67fcc3a9582797aJay Foad CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, PtrToInt8Ty, true), 99726c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_lookup_class"); 99820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return Builder.CreateCall(ClassLookupFn, ClassName); 999391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 1000391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 1001c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall// This has to perform the lookup every time, since posing and related 1002c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall// techniques can modify the name -> class mapping. 1003c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnallllvm::Value *CGObjCGNU::GetClass(CGBuilderTy &Builder, 1004c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall const ObjCInterfaceDecl *OID) { 1005d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall return GetClassNamed(Builder, OID->getNameAsString(), OID->isWeakImported()); 1006c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall} 1007c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnallllvm::Value *CGObjCGNU::EmitNSAutoreleasePoolClassRef(CGBuilderTy &Builder) { 1008d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall return GetClassNamed(Builder, "NSAutoreleasePool", false); 1009c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall} 1010c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall 101103b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanianllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, Selector Sel, 10129f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const std::string &TypeEncoding, bool lval) { 10139f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 10145f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<TypedSelector, 2> &Types = SelectorTable[Sel]; 10159f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::GlobalAlias *SelValue = 0; 10169f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 10179f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 10185f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner for (SmallVectorImpl<TypedSelector>::iterator i = Types.begin(), 10199f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall e = Types.end() ; i!=e ; i++) { 10209f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (i->first == TypeEncoding) { 10219f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelValue = i->second; 10229f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall break; 10239f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 10249f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 10259f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (0 == SelValue) { 1026c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SelValue = new llvm::GlobalAlias(SelectorTy, 10279f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::GlobalValue::PrivateLinkage, 10289f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ".objc_selector_"+Sel.getAsString(), NULL, 10299f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall &TheModule); 10309f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.push_back(TypedSelector(TypeEncoding, SelValue)); 10319f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 10329f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 1033c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall if (lval) { 1034c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *tmp = Builder.CreateAlloca(SelValue->getType()); 1035c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Builder.CreateStore(SelValue, tmp); 1036c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return tmp; 1037c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 1038c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return SelValue; 10399f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall} 10409f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 10419f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, Selector Sel, 10429f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall bool lval) { 10439f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return GetSelector(Builder, Sel, std::string(), lval); 1044df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian} 1045df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 10466d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbarllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 1047df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian *Method) { 1048df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian std::string SelTypes; 1049df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian CGM.getContext().getObjCEncodingForMethodDecl(Method, SelTypes); 10509f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return GetSelector(Builder, Method->getSelector(), SelTypes, false); 10518e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner} 10528e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 1053cf5abc7ba032bd35158e4d75b0bc92a482fc67e8Fariborz Jahanianllvm::Constant *CGObjCGNU::GetEHType(QualType T) { 10542b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall if (T->isObjCIdType() || T->isObjCQualifiedIdType()) { 10552b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall // With the old ABI, there was only one kind of catchall, which broke 10562b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall // foreign exceptions. With the new ABI, we use __objc_id_typeinfo as 10572b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall // a pointer indicating object catchalls, and NULL to indicate real 10582b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall // catchalls 10592b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall if (CGM.getLangOpts().ObjCRuntime.isNonFragile()) { 10602b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall return MakeConstantString("@id"); 10612b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall } else { 10622b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall return 0; 10632b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall } 10649735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 10652b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall 10662b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall // All other types should be Objective-C interface pointer types. 10672b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall const ObjCObjectPointerType *OPT = T->getAs<ObjCObjectPointerType>(); 10682b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall assert(OPT && "Invalid @catch type."); 10692b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall const ObjCInterfaceDecl *IDecl = OPT->getObjectType()->getInterface(); 10702b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall assert(IDecl && "Invalid @catch type."); 10712b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall return MakeConstantString(IDecl->getIdentifier()->getName()); 10722b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall} 10732b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall 10742b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCallllvm::Constant *CGObjCGNUstep::GetEHType(QualType T) { 10752b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall if (!CGM.getLangOpts().CPlusPlus) 10762b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall return CGObjCGNU::GetEHType(T); 10772b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall 107880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // For Objective-C++, we want to provide the ability to catch both C++ and 107980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // Objective-C objects in the same function. 108080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 108180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // There's a particular fixed type info for 'id'. 108280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall if (T->isObjCIdType() || 108380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall T->isObjCQualifiedIdType()) { 108480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *IDEHType = 108580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall CGM.getModule().getGlobalVariable("__objc_id_type_info"); 108680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall if (!IDEHType) 108780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall IDEHType = 108880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall new llvm::GlobalVariable(CGM.getModule(), PtrToInt8Ty, 108980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall false, 109080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::GlobalValue::ExternalLinkage, 109180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 0, "__objc_id_type_info"); 109280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall return llvm::ConstantExpr::getBitCast(IDEHType, PtrToInt8Ty); 109380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall } 109480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 109580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall const ObjCObjectPointerType *PT = 109680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall T->getAs<ObjCObjectPointerType>(); 109780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall assert(PT && "Invalid @catch type."); 109880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall const ObjCInterfaceType *IT = PT->getInterfaceType(); 109980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall assert(IT && "Invalid @catch type."); 110080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall std::string className = IT->getDecl()->getIdentifier()->getName(); 110180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 110280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall std::string typeinfoName = "__objc_eh_typeinfo_" + className; 110380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 110480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // Return the existing typeinfo if it exists 110580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *typeinfo = TheModule.getGlobalVariable(typeinfoName); 1106acd76fe8e1b1b3fd83dac66848041629a8b06e8aDavid Chisnall if (typeinfo) 1107acd76fe8e1b1b3fd83dac66848041629a8b06e8aDavid Chisnall return llvm::ConstantExpr::getBitCast(typeinfo, PtrToInt8Ty); 110880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 110980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // Otherwise create it. 111080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 111180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // vtable for gnustep::libobjc::__objc_class_type_info 111280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // It's quite ugly hard-coding this. Ideally we'd generate it using the host 111380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // platform's name mangling. 111480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall const char *vtableName = "_ZTVN7gnustep7libobjc22__objc_class_type_infoE"; 111580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *Vtable = TheModule.getGlobalVariable(vtableName); 111680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall if (!Vtable) { 111780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall Vtable = new llvm::GlobalVariable(TheModule, PtrToInt8Ty, true, 111880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::GlobalValue::ExternalLinkage, 0, vtableName); 111980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall } 112080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *Two = llvm::ConstantInt::get(IntTy, 2); 1121a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad Vtable = llvm::ConstantExpr::getGetElementPtr(Vtable, Two); 112280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall Vtable = llvm::ConstantExpr::getBitCast(Vtable, PtrToInt8Ty); 112380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 112480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *typeName = 112580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall ExportUniqueString(className, "__objc_eh_typename_"); 112680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 112780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall std::vector<llvm::Constant*> fields; 112880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall fields.push_back(Vtable); 112980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall fields.push_back(typeName); 113080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *TI = 11317650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner MakeGlobal(llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, 113280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall NULL), fields, "__objc_eh_typeinfo_" + className, 113380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::GlobalValue::LinkOnceODRLinkage); 113480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall return llvm::ConstantExpr::getBitCast(TI, PtrToInt8Ty); 11355a180397870944548aaadeaebf58e415885b9489John McCall} 11365a180397870944548aaadeaebf58e415885b9489John McCall 113720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate an NSConstantString object. 11380d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnallllvm::Constant *CGObjCGNU::GenerateConstantString(const StringLiteral *SL) { 113948272a078e54d501cb05edd797c54b8e82ceb520David Chisnall 11402f4eaef37476ae6891ede8ba215d0f6fd093629bBenjamin Kramer std::string Str = SL->getString().str(); 11410d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall 114248272a078e54d501cb05edd797c54b8e82ceb520David Chisnall // Look for an existing one 114348272a078e54d501cb05edd797c54b8e82ceb520David Chisnall llvm::StringMap<llvm::Constant*>::iterator old = ObjCStrings.find(Str); 114448272a078e54d501cb05edd797c54b8e82ceb520David Chisnall if (old != ObjCStrings.end()) 114548272a078e54d501cb05edd797c54b8e82ceb520David Chisnall return old->getValue(); 114648272a078e54d501cb05edd797c54b8e82ceb520David Chisnall 11474e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie StringRef StringClass = CGM.getLangOpts().ObjCConstantStringClass; 114813df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall 114913df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall if (StringClass.empty()) StringClass = "NXConstantString"; 115013df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall 115113df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall std::string Sym = "_OBJC_CLASS_"; 115213df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall Sym += StringClass; 115313df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall 115413df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::Constant *isa = TheModule.getNamedGlobal(Sym); 115513df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall 115613df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall if (!isa) 115713df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall isa = new llvm::GlobalVariable(TheModule, IdTy, /* isConstant */false, 115813df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::GlobalValue::ExternalWeakLinkage, 0, Sym); 115913df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall else if (isa->getType() != PtrToIdTy) 116013df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall isa = llvm::ConstantExpr::getBitCast(isa, PtrToIdTy); 116113df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall 116220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 116313df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall Ivars.push_back(isa); 116413fd7e5111032f54b538dd66d035b0ccc1f82467Chris Lattner Ivars.push_back(MakeConstantString(Str)); 11654a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Ivars.push_back(llvm::ConstantInt::get(IntTy, Str.size())); 116620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ObjCStr = MakeGlobal( 116713df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::StructType::get(PtrToIdTy, PtrToInt8Ty, IntTy, NULL), 116820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars, ".objc_str"); 116948272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ObjCStr = llvm::ConstantExpr::getBitCast(ObjCStr, PtrToInt8Ty); 117048272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ObjCStrings[Str] = ObjCStr; 117148272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ConstantStrings.push_back(ObjCStr); 117220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return ObjCStr; 117320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 117420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 117520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///Generates a message send where the super is the receiver. This is a message 117620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///send to self with special delivery semantics indicating which class's method 117720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///should be called. 11789f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallRValue 11799f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCGNU::GenerateMessageSendSuper(CodeGenFunction &CGF, 1180ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 11817f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 11827f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 1183f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 11847ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 1185f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 118619cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 1187d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const CallArgList &CallArgs, 1188d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const ObjCMethodDecl *Method) { 11890bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGBuilderTy &Builder = CGF.Builder; 11904e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (CGM.getLangOpts().getGC() == LangOptions::GCOnly) { 1191ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == RetainSel || Sel == AutoreleaseSel) { 11920bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall return RValue::get(EnforceType(Builder, Receiver, 11930bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGM.getTypes().ConvertType(ResultType))); 1194ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1195ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == ReleaseSel) { 1196ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return RValue::get(0); 1197ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1198ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1199db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 1200db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::Value *cmd = GetSelector(Builder, Sel); 1201db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 1202b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1203b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CallArgList ActualArgs; 1204b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 120504c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(EnforceType(Builder, Receiver, IdTy)), ASTIdTy); 120604c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(cmd), CGF.getContext().getObjCSelType()); 1207f85e193739c953358c865005855253af4f68a497John McCall ActualArgs.addFrom(CallArgs); 1208b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1209de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall MessageSendInfo MSI = getMessageSendInfo(Method, ResultType, ActualArgs); 1210b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 12115efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::Value *ReceiverClass = 0; 121248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (isCategoryImpl) { 121348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::Constant *classLookupFunction = 0; 121448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 121596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 1216da549e8995c447542d5631b8b67fcc3a9582797aJay Foad IdTy, PtrTy, true), "objc_get_meta_class"); 121748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 121896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 1219da549e8995c447542d5631b8b67fcc3a9582797aJay Foad IdTy, PtrTy, true), "objc_get_class"); 12205efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 1221db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateCall(classLookupFunction, 122248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MakeConstantString(Class->getNameAsString())); 12235efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } else { 122448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // Set up global aliases for the metaclass or class pointer if they do not 122548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // already exist. These will are forward-references which will be set to 1226bb1c8600218b3244340331165fc7cba7bf227655Mike Stump // pointers to the class and metaclass structure created for the runtime 1227bb1c8600218b3244340331165fc7cba7bf227655Mike Stump // load function. To send a message to super, we look up the value of the 122848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // super_class pointer from either the class or metaclass structure. 122948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 123048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!MetaClassPtrAlias) { 123148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MetaClassPtrAlias = new llvm::GlobalAlias(IdTy, 123248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_metaclass_ref" + 123348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 123448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 123548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = MetaClassPtrAlias; 123648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 123748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!ClassPtrAlias) { 123848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ClassPtrAlias = new llvm::GlobalAlias(IdTy, 123948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_class_ref" + 124048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 124148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 124248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = ClassPtrAlias; 12435efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 124471238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 12455efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Cast the pointer to a simplified version of the class structure 1246db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateBitCast(ReceiverClass, 124796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual( 12487650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType::get(IdTy, IdTy, NULL))); 12495efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Get the superclass pointer 1250db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateStructGEP(ReceiverClass, 1); 12515efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Load the superclass pointer 1252db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateLoad(ReceiverClass); 125320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Construct the structure used to look up the IMP 12547650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCSuperTy = llvm::StructType::get( 125547a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson Receiver->getType(), IdTy, NULL); 1256db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::Value *ObjCSuper = Builder.CreateAlloca(ObjCSuperTy); 1257b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1258db831948f32217ece8410099f9982ef900c3b3c3David Chisnall Builder.CreateStore(Receiver, Builder.CreateStructGEP(ObjCSuper, 0)); 1259db831948f32217ece8410099f9982ef900c3b3c3David Chisnall Builder.CreateStore(ReceiverClass, Builder.CreateStructGEP(ObjCSuper, 1)); 126020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1261c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall ObjCSuper = EnforceType(Builder, ObjCSuper, PtrToObjCSuperTy); 1262db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 1263c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Get the IMP 1264c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *imp = LookupIMPSuper(CGF, ObjCSuper, cmd); 1265de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall imp = EnforceType(Builder, imp, MSI.MessengerType); 126620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1267dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::Value *impMD[] = { 1268dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::MDString::get(VMContext, Sel.getAsString()), 1269dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::MDString::get(VMContext, Class->getSuperClass()->getNameAsString()), 1270dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::ConstantInt::get(llvm::Type::getInt1Ty(VMContext), IsClassMessage) 1271dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall }; 12726f141659cab11109d9931d92d0988f8850778de3Jay Foad llvm::MDNode *node = llvm::MDNode::get(VMContext, impMD); 1273dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall 12744b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall llvm::Instruction *call; 1275de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall RValue msgRet = CGF.EmitCall(MSI.CallInfo, imp, Return, ActualArgs, 0, &call); 12764b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall call->setMetadata(msgSendMDKind, node); 12774b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall return msgRet; 127820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 127920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 12801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// Generate code for a message send expression. 12819f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallRValue 12829f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCGNU::GenerateMessageSend(CodeGenFunction &CGF, 1283ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 12847f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 12857f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 1286f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 1287df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 1288c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall const ObjCInterfaceDecl *Class, 1289df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method) { 12900bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGBuilderTy &Builder = CGF.Builder; 12910bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall 1292664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // Strip out message sends to retain / release in GC mode 12934e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (CGM.getLangOpts().getGC() == LangOptions::GCOnly) { 1294ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == RetainSel || Sel == AutoreleaseSel) { 12950bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall return RValue::get(EnforceType(Builder, Receiver, 12960bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGM.getTypes().ConvertType(ResultType))); 1297ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1298ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == ReleaseSel) { 1299ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return RValue::get(0); 1300ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1301ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1302664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1303664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // If the return type is something that goes in an integer register, the 1304664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // runtime will handle 0 returns. For other cases, we fill in the 0 value 1305664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // ourselves. 1306664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // 1307664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // The language spec says the result of this kind of message send is 1308664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // undefined, but lots of people seem to have forgotten to read that 1309664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // paragraph and insist on sending messages to nil that have structure 1310664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // returns. With GCC, this generates a random return value (whatever happens 1311664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // to be on the stack / in those registers at the time) on most platforms, 1312c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // and generates an illegal instruction trap on SPARC. With LLVM it corrupts 1313c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // the stack. 1314c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall bool isPointerSizedReturn = (ResultType->isAnyPointerType() || 1315c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall ResultType->isIntegralOrEnumerationType() || ResultType->isVoidType()); 1316664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1317664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::BasicBlock *startBB = 0; 1318664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::BasicBlock *messageBB = 0; 1319a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall llvm::BasicBlock *continueBB = 0; 1320664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1321664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall if (!isPointerSizedReturn) { 1322664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall startBB = Builder.GetInsertBlock(); 1323664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall messageBB = CGF.createBasicBlock("msgSend"); 1324a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall continueBB = CGF.createBasicBlock("continue"); 1325664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1326664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Value *isNil = Builder.CreateICmpEQ(Receiver, 1327664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Constant::getNullValue(Receiver->getType())); 1328a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall Builder.CreateCondBr(isNil, continueBB, messageBB); 1329664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall CGF.EmitBlock(messageBB); 1330664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } 1331664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 13320f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall IdTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(ASTIdTy)); 1333df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::Value *cmd; 1334df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian if (Method) 1335d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian cmd = GetSelector(Builder, Method); 1336df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian else 1337d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian cmd = GetSelector(Builder, Sel); 1338c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall cmd = EnforceType(Builder, cmd, SelectorTy); 1339c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Receiver = EnforceType(Builder, Receiver, IdTy); 1340c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 1341c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *impMD[] = { 1342c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDString::get(VMContext, Sel.getAsString()), 1343c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDString::get(VMContext, Class ? Class->getNameAsString() :""), 1344c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::ConstantInt::get(llvm::Type::getInt1Ty(VMContext), Class!=0) 1345c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall }; 13466f141659cab11109d9931d92d0988f8850778de3Jay Foad llvm::MDNode *node = llvm::MDNode::get(VMContext, impMD); 1347b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1348c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CallArgList ActualArgs; 134904c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(Receiver), ASTIdTy); 135004c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(cmd), CGF.getContext().getObjCSelType()); 1351f85e193739c953358c865005855253af4f68a497John McCall ActualArgs.addFrom(CallArgs); 1352de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall 1353de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall MessageSendInfo MSI = getMessageSendInfo(Method, ResultType, ActualArgs); 1354de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall 135589c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // Get the IMP to call 135689c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall llvm::Value *imp; 135789c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall 135889c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // If we have non-legacy dispatch specified, we try using the objc_msgSend() 135989c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // functions. These are not supported on all platforms (or all runtimes on a 136089c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // given platform), so we 136189c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall switch (CGM.getCodeGenOpts().getObjCDispatchMethod()) { 136289c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall case CodeGenOptions::Legacy: 136389c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall imp = LookupIMP(CGF, Receiver, cmd, node); 136489c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall break; 136589c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall case CodeGenOptions::Mixed: 136689c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall case CodeGenOptions::NonLegacy: 13676f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall if (CGM.ReturnTypeUsesFPRet(ResultType)) { 13686f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall imp = CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, IdTy, true), 13696f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall "objc_msgSend_fpret"); 1370de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall } else if (CGM.ReturnTypeUsesSRet(MSI.CallInfo)) { 137189c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // The actual types here don't matter - we're going to bitcast the 137289c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // function anyway 137389c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall imp = CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, IdTy, true), 137489c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall "objc_msgSend_stret"); 137589c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall } else { 137689c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall imp = CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, IdTy, true), 137789c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall "objc_msgSend"); 137889c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall } 137989c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall } 138089c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall 1381403bc3f85f3b3461b73abdd9c632980bf95f34bdDavid Chisnall // Reset the receiver in case the lookup modified it 1382403bc3f85f3b3461b73abdd9c632980bf95f34bdDavid Chisnall ActualArgs[0] = CallArg(RValue::get(Receiver), ASTIdTy, false); 138389c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall 1384de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall imp = EnforceType(Builder, imp, MSI.MessengerType); 138563e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall 13864b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall llvm::Instruction *call; 1387de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall RValue msgRet = CGF.EmitCall(MSI.CallInfo, imp, Return, ActualArgs, 13884b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall 0, &call); 13894b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall call->setMetadata(msgSendMDKind, node); 1390664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1391a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall 1392664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall if (!isPointerSizedReturn) { 1393a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall messageBB = CGF.Builder.GetInsertBlock(); 1394a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall CGF.Builder.CreateBr(continueBB); 1395a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall CGF.EmitBlock(continueBB); 1396664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall if (msgRet.isScalar()) { 1397664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Value *v = msgRet.getScalarVal(); 1398bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi = Builder.CreatePHI(v->getType(), 2); 1399664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(v, messageBB); 1400664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(llvm::Constant::getNullValue(v->getType()), startBB); 1401664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall msgRet = RValue::get(phi); 1402664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } else if (msgRet.isAggregate()) { 1403664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Value *v = msgRet.getAggregateAddr(); 1404bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi = Builder.CreatePHI(v->getType(), 2); 14052acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *RetTy = cast<llvm::PointerType>(v->getType()); 1406866163bf6c66211a9b4d5ba160ac02de04ce4be6David Chisnall llvm::AllocaInst *NullVal = 1407866163bf6c66211a9b4d5ba160ac02de04ce4be6David Chisnall CGF.CreateTempAlloca(RetTy->getElementType(), "null"); 1408664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall CGF.InitTempAlloca(NullVal, 1409664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Constant::getNullValue(RetTy->getElementType())); 1410664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(v, messageBB); 1411664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(NullVal, startBB); 1412664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall msgRet = RValue::getAggregate(phi); 1413664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } else /* isComplex() */ { 1414664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall std::pair<llvm::Value*,llvm::Value*> v = msgRet.getComplexVal(); 1415bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi = Builder.CreatePHI(v.first->getType(), 2); 1416664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(v.first, messageBB); 1417664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(llvm::Constant::getNullValue(v.first->getType()), 1418664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall startBB); 1419bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi2 = Builder.CreatePHI(v.second->getType(), 2); 1420664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi2->addIncoming(v.second, messageBB); 1421664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi2->addIncoming(llvm::Constant::getNullValue(v.second->getType()), 1422664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall startBB); 1423664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall msgRet = RValue::getComplex(phi, phi2); 1424664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } 1425664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } 1426664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall return msgRet; 142720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 142820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 14291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// Generates a MethodList. Used in construction of a objc_class and 143020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// objc_category structures. 1431795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendlingllvm::Constant *CGObjCGNU:: 1432795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill WendlingGenerateMethodList(const StringRef &ClassName, 1433795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling const StringRef &CategoryName, 1434795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<Selector> MethodSels, 1435795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> MethodTypes, 1436795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling bool isClassMethodList) { 14370f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall if (MethodSels.empty()) 14380f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall return NULLPtr; 14391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 14407650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCMethodTy = llvm::StructType::get( 144120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime creates it us. 144220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Method types 1443c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall IMPTy, //Method pointer 144420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 144520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 144620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 144720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size(); i < e; ++i) { 144820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 14499f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *Method = 145020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov TheModule.getFunction(SymbolNameForMethod(ClassName, CategoryName, 14519f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall MethodSels[i], 14529f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall isClassMethodList)); 14539f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall assert(Method && "Can't generate metadata for method that doesn't exist"); 14549f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *C = MakeConstantString(MethodSels[i].getAsString()); 14559f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(C); 14569f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(MethodTypes[i]); 14579f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Method = llvm::ConstantExpr::getBitCast(Method, 1458c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall IMPTy); 14599f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(Method); 14609f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Methods.push_back(llvm::ConstantStruct::get(ObjCMethodTy, Elements)); 146120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 146220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 146320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 146496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodTy, 14651e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Methods.size()); 14667db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *MethodArray = llvm::ConstantArray::get(ObjCMethodArrayTy, 1467fba676396703e87a5034e5f308aa30a633468f66Chris Lattner Methods); 146820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 146920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing list pointer, array and array count 1470c1c20114a401e503c07d68c47e0728bb063f35c8Chris Lattner llvm::StructType *ObjCMethodListTy = llvm::StructType::create(VMContext); 14719cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *NextPtrTy = llvm::PointerType::getUnqual(ObjCMethodListTy); 14729cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ObjCMethodListTy->setBody( 14731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NextPtrTy, 14741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump IntTy, 147520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodArrayTy, 147620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 147720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 147820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 147903e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson Methods.push_back(llvm::ConstantPointerNull::get( 148096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(ObjCMethodListTy))); 1481917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Methods.push_back(llvm::ConstantInt::get(Int32Ty, MethodTypes.size())); 148220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(MethodArray); 14831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 148420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 148520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodListTy, Methods, ".objc_method_list"); 148620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 148720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 148820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generates an IvarList. Used in construction of a objc_class. 1489795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendlingllvm::Constant *CGObjCGNU:: 1490795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill WendlingGenerateIvarList(ArrayRef<llvm::Constant *> IvarNames, 1491795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> IvarTypes, 1492795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> IvarOffsets) { 14931804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall if (IvarNames.size() == 0) 14941804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall return NULLPtr; 14951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 14967650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCIvarTy = llvm::StructType::get( 149720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 149820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 149920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, 150020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 150120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 150220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 150320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = IvarNames.size() ; i < e ; i++) { 150420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 15058a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(IvarNames[i]); 15068a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(IvarTypes[i]); 150720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IvarOffsets[i]); 150808e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Ivars.push_back(llvm::ConstantStruct::get(ObjCIvarTy, Elements)); 150920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 151020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 151120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 151296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCIvarArrayTy = llvm::ArrayType::get(ObjCIvarTy, 151320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarNames.size()); 151420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 15151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 151620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 15174a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(IntTy, (int)IvarNames.size())); 15187db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson Elements.push_back(llvm::ConstantArray::get(ObjCIvarArrayTy, Ivars)); 151920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing array and array count 15207650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCIvarListTy = llvm::StructType::get(IntTy, 152120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCIvarArrayTy, 152220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 152320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 152420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 152520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCIvarListTy, Elements, ".objc_ivar_list"); 15260f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 15270f984268b05edab2cc555a427c441baa9c252658Chris Lattner 152820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate a class structure 152920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateClassStructure( 153020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 153120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 153220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 1533d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 153420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 153520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 153620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 153720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 1538d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Protocols, 1539d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *IvarOffsets, 15408c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall llvm::Constant *Properties, 1541917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *StrongIvarBitmap, 1542917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *WeakIvarBitmap, 15438c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall bool isMeta) { 154420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Set up the class structure 154520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Note: Several of these are char*s when they should be ids. This is 154620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // because the runtime performs this translation on load. 1547d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // 1548d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Fields marked New ABI are part of the GNUstep runtime. We emit them 1549d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // anyway; the classes will still work with the GNU runtime, they will just 1550d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // be ignored. 15517650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ClassTy = llvm::StructType::get( 155213df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall PtrToInt8Ty, // isa 155320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // super_class 155420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // name 155520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // version 155620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // info 155720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // instance_size 155820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IVars->getType(), // ivars 155920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods->getType(), // methods 15601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // These are all filled in by the runtime, so we pretend 156120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // dtable 156220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // subclass_list 156320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // sibling_class 156420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // protocols 156520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // gc_object_type 1566d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // New ABI: 1567d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian LongTy, // abi_version 1568d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IvarOffsets->getType(), // ivar_offsets 1569d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties->getType(), // properties 15709d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall IntPtrTy, // strong_pointers 15719d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall IntPtrTy, // weak_pointers 157220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 15734a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::Constant *Zero = llvm::ConstantInt::get(LongTy, 0); 157420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Fill in the structure 157520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 15763c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(MetaClass, PtrToInt8Ty)); 157720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SuperClass); 1578d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner Elements.push_back(MakeConstantString(Name, ".class_name")); 157920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Zero); 15804a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, info)); 158105f3a507bb53ed2bd5573d551a26654a604187ebDavid Chisnall if (isMeta) { 158225a6a84cf5067b32c271e3ba078676dee838798dMicah Villmow llvm::DataLayout td(&TheModule); 1583e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck Elements.push_back( 1584e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck llvm::ConstantInt::get(LongTy, 1585e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck td.getTypeSizeInBits(ClassTy) / 1586e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck CGM.getContext().getCharWidth())); 158705f3a507bb53ed2bd5573d551a26654a604187ebDavid Chisnall } else 158805f3a507bb53ed2bd5573d551a26654a604187ebDavid Chisnall Elements.push_back(InstanceSize); 158920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IVars); 159020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Methods); 1591d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 1592d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 1593d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 15943c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(Protocols, PtrTy)); 1595d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 1596917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Elements.push_back(llvm::ConstantInt::get(LongTy, 1)); 1597d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(IvarOffsets); 1598d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(Properties); 1599917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Elements.push_back(StrongIvarBitmap); 1600917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Elements.push_back(WeakIvarBitmap); 160120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 160241d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // This is now an externally visible symbol, so that we can speed up class 160313df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall // messages in the next ABI. We may already have some weak references to 160413df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall // this, so check and fix them properly. 160513df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall std::string ClassSym((isMeta ? "_OBJC_METACLASS_": "_OBJC_CLASS_") + 160613df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall std::string(Name)); 160713df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::GlobalVariable *ClassRef = TheModule.getNamedGlobal(ClassSym); 160813df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::Constant *Class = MakeGlobal(ClassTy, Elements, ClassSym, 160913df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::GlobalValue::ExternalLinkage); 161013df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall if (ClassRef) { 161113df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall ClassRef->replaceAllUsesWith(llvm::ConstantExpr::getBitCast(Class, 161213df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall ClassRef->getType())); 161313df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall ClassRef->removeFromParent(); 161413df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall Class->setName(ClassSym); 161513df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall } 161613df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall return Class; 161720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 161820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1619795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendlingllvm::Constant *CGObjCGNU:: 1620795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill WendlingGenerateProtocolMethodList(ArrayRef<llvm::Constant *> MethodNames, 1621795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> MethodTypes) { 16221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 16237650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCMethodDescTy = llvm::StructType::get( 162420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime does the casting for us. 162520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 162620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 162720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 162820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 162920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size() ; i < e ; i++) { 163020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 16311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(MethodNames[i]); 16328a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MethodTypes[i]); 163308e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Methods.push_back(llvm::ConstantStruct::get(ObjCMethodDescTy, Elements)); 163420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 163596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodDescTy, 163620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodNames.size()); 16377db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *Array = llvm::ConstantArray::get(ObjCMethodArrayTy, 1638bb1c8600218b3244340331165fc7cba7bf227655Mike Stump Methods); 16397650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCMethodDescListTy = llvm::StructType::get( 164020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, ObjCMethodArrayTy, NULL); 164120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 16424a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Methods.push_back(llvm::ConstantInt::get(IntTy, MethodNames.size())); 164320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(Array); 164420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodDescListTy, Methods, ".objc_method_list"); 164520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 1646bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 164720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// Create the protocol list structure used in classes, categories and so on 1648795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendlingllvm::Constant *CGObjCGNU::GenerateProtocolList(ArrayRef<std::string>Protocols){ 164996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 165020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Protocols.size()); 16517650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ProtocolListTy = llvm::StructType::get( 165220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, //Should be a recurisve pointer, but it's always NULL here. 16538fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall SizeTy, 165420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolArrayTy, 165520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 16561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 165720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (const std::string *iter = Protocols.begin(), *endIter = Protocols.end(); 165820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != endIter ; iter++) { 1659ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall llvm::Constant *protocol = 0; 1660ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall llvm::StringMap<llvm::Constant*>::iterator value = 1661ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall ExistingProtocols.find(*iter); 1662ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall if (value == ExistingProtocols.end()) { 1663f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian protocol = GenerateEmptyProtocol(*iter); 1664ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall } else { 1665ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall protocol = value->getValue(); 1666ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall } 16673c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::Constant *Ptr = llvm::ConstantExpr::getBitCast(protocol, 1668a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson PtrToInt8Ty); 166920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Ptr); 167020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 16717db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 167220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements); 167320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 167420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 16754a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, Protocols.size())); 167620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolArray); 167720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ProtocolListTy, Elements, ".objc_protocol_list"); 167820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 167920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 16801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpllvm::Value *CGObjCGNU::GenerateProtocolRef(CGBuilderTy &Builder, 1681af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD) { 1682f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Value *protocol = ExistingProtocols[PD->getNameAsString()]; 16832acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *T = 1684f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian CGM.getTypes().ConvertType(CGM.getContext().getObjCProtoType()); 168596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson return Builder.CreateBitCast(protocol, llvm::PointerType::getUnqual(T)); 1686f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian} 1687f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 1688f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanianllvm::Constant *CGObjCGNU::GenerateEmptyProtocol( 1689f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian const std::string &ProtocolName) { 16905f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<std::string, 0> EmptyStringVector; 16915f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 0> EmptyConstantVector; 1692f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 1693f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *ProtocolList = GenerateProtocolList(EmptyStringVector); 1694d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *MethodList = 1695f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian GenerateProtocolMethodList(EmptyConstantVector, EmptyConstantVector); 1696f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // Protocols are objects containing lists of the methods implemented and 1697f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // protocols adopted. 16987650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ProtocolTy = llvm::StructType::get(IdTy, 1699f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian PtrToInt8Ty, 1700f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian ProtocolList->getType(), 1701d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1702d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1703d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1704d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1705f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian NULL); 17061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 1707f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // The isa pointer must be set to a magic number so the runtime knows it's 1708f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // the correct layout. 17093c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getIntToPtr( 1710917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ConstantInt::get(Int32Ty, ProtocolVersion), IdTy)); 1711f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 1712f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(ProtocolList); 1713d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1714d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1715d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1716d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1717f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian return MakeGlobal(ProtocolTy, Elements, ".objc_protocol"); 171820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 171920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1720af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbarvoid CGObjCGNU::GenerateProtocol(const ObjCProtocolDecl *PD) { 1721af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar ASTContext &Context = CGM.getContext(); 17228ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ProtocolName = PD->getNameAsString(); 17231d784b277cdfd4eba03680715d2a082b3f28d295Douglas Gregor 17241d784b277cdfd4eba03680715d2a082b3f28d295Douglas Gregor // Use the protocol definition, if there is one. 17251d784b277cdfd4eba03680715d2a082b3f28d295Douglas Gregor if (const ObjCProtocolDecl *Def = PD->getDefinition()) 17261d784b277cdfd4eba03680715d2a082b3f28d295Douglas Gregor PD = Def; 17271d784b277cdfd4eba03680715d2a082b3f28d295Douglas Gregor 17285f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<std::string, 16> Protocols; 1729af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar for (ObjCProtocolDecl::protocol_iterator PI = PD->protocol_begin(), 1730af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar E = PD->protocol_end(); PI != E; ++PI) 1731d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*PI)->getNameAsString()); 17325f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> InstanceMethodNames; 17335f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 17345f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> OptionalInstanceMethodNames; 17355f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> OptionalInstanceMethodTypes; 173617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (ObjCProtocolDecl::instmeth_iterator iter = PD->instmeth_begin(), 173717945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis E = PD->instmeth_end(); iter != E; iter++) { 1738af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 1739af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl(*iter, TypeStr); 1740d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if ((*iter)->getImplementationControl() == ObjCMethodDecl::Optional) { 1741d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodNames.push_back( 1742d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1743d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 1744a904e01839e8244d39b3d9bfc749ec93f1cbe1e1David Chisnall } else { 1745a904e01839e8244d39b3d9bfc749ec93f1cbe1e1David Chisnall InstanceMethodNames.push_back( 1746a904e01839e8244d39b3d9bfc749ec93f1cbe1e1David Chisnall MakeConstantString((*iter)->getSelector().getAsString())); 1747a904e01839e8244d39b3d9bfc749ec93f1cbe1e1David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 1748d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1749af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 1750af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar // Collect information about class methods: 17515f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> ClassMethodNames; 17525f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> ClassMethodTypes; 17535f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> OptionalClassMethodNames; 17545f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> OptionalClassMethodTypes; 17551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCProtocolDecl::classmeth_iterator 175617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = PD->classmeth_begin(), endIter = PD->classmeth_end(); 175717945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter != endIter ; iter++) { 1758af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 1759af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 1760d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if ((*iter)->getImplementationControl() == ObjCMethodDecl::Optional) { 1761d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodNames.push_back( 1762d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1763d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodTypes.push_back(MakeConstantString(TypeStr)); 1764a904e01839e8244d39b3d9bfc749ec93f1cbe1e1David Chisnall } else { 1765a904e01839e8244d39b3d9bfc749ec93f1cbe1e1David Chisnall ClassMethodNames.push_back( 1766a904e01839e8244d39b3d9bfc749ec93f1cbe1e1David Chisnall MakeConstantString((*iter)->getSelector().getAsString())); 1767a904e01839e8244d39b3d9bfc749ec93f1cbe1e1David Chisnall ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 1768d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1769af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 177020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 177120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ProtocolList = GenerateProtocolList(Protocols); 177220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceMethodList = 177320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(InstanceMethodNames, InstanceMethodTypes); 177420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = 177520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(ClassMethodNames, ClassMethodTypes); 1776d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalInstanceMethodList = 1777d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolMethodList(OptionalInstanceMethodNames, 1778d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodTypes); 1779d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalClassMethodList = 1780d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolMethodList(OptionalClassMethodNames, 1781d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodTypes); 1782d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1783d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Property metadata: name, attributes, isSynthesized, setter name, setter 1784d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // types, getter name, getter types. 1785d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // The isSynthesized value is always set to 0 in a protocol. It exists to 1786d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // simplify the runtime library by allowing it to use the same data 1787d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // structures for protocol metadata everywhere. 17887650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *PropertyMetadataTy = llvm::StructType::get( 1789d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, Int8Ty, Int8Ty, PtrToInt8Ty, PtrToInt8Ty, PtrToInt8Ty, 1790d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, NULL); 1791d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Properties; 1792d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> OptionalProperties; 1793d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1794d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all of the property methods need adding to the method list and to the 1795d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // property metadata list. 1796d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (ObjCContainerDecl::prop_iterator 1797d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter = PD->prop_begin(), endIter = PD->prop_end(); 1798d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1799d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Fields; 1800581deb3da481053c4993c7600f97acf7768caac5David Blaikie ObjCPropertyDecl *property = *iter; 1801d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1802891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall 1803891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall Fields.push_back(MakePropertyEncodingString(property, PD)); 1804891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall 1805d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 1806d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian property->getPropertyAttributes())); 1807d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 0)); 1808d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *getter = property->getGetterMethodDecl()) { 1809d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1810d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(getter,TypeStr); 1811d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 1812d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(TypeEncoding); 1813d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(getter->getSelector().getAsString())); 1814d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1815d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1816d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1817d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1818d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1819d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *setter = property->getSetterMethodDecl()) { 1820d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1821d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(setter,TypeStr); 1822d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 1823d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(TypeEncoding); 1824d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(setter->getSelector().getAsString())); 1825d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1826d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1827d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1828d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1829d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1830d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (property->getPropertyImplementation() == ObjCPropertyDecl::Optional) { 1831d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalProperties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1832d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1833d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1834d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1835d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1836d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyArray = llvm::ConstantArray::get( 1837d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType::get(PropertyMetadataTy, Properties.size()), Properties); 1838d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* PropertyListInitFields[] = 1839d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian {llvm::ConstantInt::get(IntTy, Properties.size()), NULLPtr, PropertyArray}; 1840d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1841d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyListInit = 1842c5cbb909e8a27deb8f1a2b6b7bf56a96051af81aChris Lattner llvm::ConstantStruct::getAnon(PropertyListInitFields); 1843d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyList = new llvm::GlobalVariable(TheModule, 1844d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyListInit->getType(), false, llvm::GlobalValue::InternalLinkage, 1845d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyListInit, ".objc_property_list"); 1846d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1847d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyArray = 1848d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantArray::get(llvm::ArrayType::get(PropertyMetadataTy, 1849d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalProperties.size()) , OptionalProperties); 1850d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* OptionalPropertyListInitFields[] = { 1851d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantInt::get(IntTy, OptionalProperties.size()), NULLPtr, 1852d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyArray }; 1853d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1854d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyListInit = 1855c5cbb909e8a27deb8f1a2b6b7bf56a96051af81aChris Lattner llvm::ConstantStruct::getAnon(OptionalPropertyListInitFields); 1856d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyList = new llvm::GlobalVariable(TheModule, 1857d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyListInit->getType(), false, 1858d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::InternalLinkage, OptionalPropertyListInit, 1859d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ".objc_property_list"); 1860d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 186120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocols are objects containing lists of the methods implemented and 186220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // protocols adopted. 18637650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ProtocolTy = llvm::StructType::get(IdTy, 186420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 186520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolList->getType(), 186620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov InstanceMethodList->getType(), 186720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ClassMethodList->getType(), 1868d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodList->getType(), 1869d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodList->getType(), 1870d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyList->getType(), 1871d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyList->getType(), 187220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 18731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 187420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The isa pointer must be set to a magic number so the runtime knows it's 187520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // the correct layout. 18763c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getIntToPtr( 1877917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ConstantInt::get(Int32Ty, ProtocolVersion), IdTy)); 187820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 187920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolList); 188020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceMethodList); 188120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassMethodList); 1882d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalInstanceMethodList); 1883d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalClassMethodList); 1884d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(PropertyList); 1885d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalPropertyList); 18861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ExistingProtocols[ProtocolName] = 18873c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolTy, Elements, 188820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_protocol"), IdTy); 188920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 1890c4a77906c259cba58c147d8468c406a430ecdcbbDmitri Gribenkovoid CGObjCGNU::GenerateProtocolHolderCategory() { 1891d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Collect information about instance methods 18925f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 1> MethodSels; 18935f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 1> MethodTypes; 1894d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1895d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Elements; 1896d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const std::string ClassName = "__ObjC_Protocol_Holder_Ugly_Hack"; 1897d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const std::string CategoryName = "AnotherHack"; 1898d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MakeConstantString(CategoryName)); 1899d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MakeConstantString(ClassName)); 1900d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Instance method list 1901d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1902d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassName, CategoryName, MethodSels, MethodTypes, false), PtrTy)); 1903d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Class method list 1904d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1905d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassName, CategoryName, MethodSels, MethodTypes, true), PtrTy)); 1906d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Protocol list 1907d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrTy, 1908d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.size()); 19097650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ProtocolListTy = llvm::StructType::get( 1910d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy, //Should be a recurisve pointer, but it's always NULL here. 19118fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall SizeTy, 1912d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolArrayTy, 1913d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NULL); 1914d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> ProtocolElements; 1915d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (llvm::StringMapIterator<llvm::Constant*> iter = 1916d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.begin(), endIter = ExistingProtocols.end(); 1917d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1918d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Ptr = llvm::ConstantExpr::getBitCast(iter->getValue(), 1919d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy); 1920d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(Ptr); 1921d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1922d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 1923d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements); 1924d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.clear(); 1925d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(NULLPtr); 1926d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(llvm::ConstantInt::get(LongTy, 1927d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.size())); 1928d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(ProtocolArray); 1929d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolListTy, 1930d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements, ".objc_protocol_list"), PtrTy)); 1931d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Categories.push_back(llvm::ConstantExpr::getBitCast( 19327650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner MakeGlobal(llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, 1933d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy, PtrTy, PtrTy, NULL), Elements), PtrTy)); 1934d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian} 193520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1936917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// Libobjc2 uses a bitfield representation where small(ish) bitfields are 1937917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// stored in a 64-bit value with the low bit set to 1 and the remaining 63 1938917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// bits set to their values, LSB first, while larger ones are stored in a 1939917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// structure of this / form: 1940917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// 1941917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// struct { int32_t length; int32_t values[length]; }; 1942917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// 1943917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// The values in the array are stored in host-endian format, with the least 1944917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// significant bit being assumed to come first in the bitfield. Therefore, a 1945917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// bitfield with the 64th bit set will be (int64_t)&{ 2, [0, 1<<31] }, while a 1946917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// bitfield / with the 63rd bit set will be 1<<64. 1947795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendlingllvm::Constant *CGObjCGNU::MakeBitField(ArrayRef<bool> bits) { 1948917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall int bitCount = bits.size(); 19499d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall int ptrBits = 19509d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall (TheModule.getPointerSize() == llvm::Module::Pointer32) ? 32 : 64; 19519d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall if (bitCount < ptrBits) { 1952917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall uint64_t val = 1; 1953917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall for (int i=0 ; i<bitCount ; ++i) { 1954e3c944a9f620dacb0c29d16e7d61c8e7fca10963Eli Friedman if (bits[i]) val |= 1ULL<<(i+1); 1955917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 19569d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall return llvm::ConstantInt::get(IntPtrTy, val); 1957917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 1958cfa88f893915ceb8ae4ce2f17c46c24a4d67502fDmitri Gribenko SmallVector<llvm::Constant *, 8> values; 1959917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall int v=0; 1960917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall while (v < bitCount) { 1961917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall int32_t word = 0; 1962917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall for (int i=0 ; (i<32) && (v<bitCount) ; ++i) { 1963917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall if (bits[v]) word |= 1<<i; 1964917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall v++; 1965917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 1966917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall values.push_back(llvm::ConstantInt::get(Int32Ty, word)); 1967917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 1968917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ArrayType *arrayTy = llvm::ArrayType::get(Int32Ty, values.size()); 1969917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *array = llvm::ConstantArray::get(arrayTy, values); 1970917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *fields[2] = { 1971917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ConstantInt::get(Int32Ty, values.size()), 1972917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall array }; 1973917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *GS = MakeGlobal(llvm::StructType::get(Int32Ty, arrayTy, 1974917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall NULL), fields); 197549de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall llvm::Constant *ptr = llvm::ConstantExpr::getPtrToInt(GS, IntPtrTy); 197649de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall return ptr; 1977917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall} 1978917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall 19797ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateCategory(const ObjCCategoryImplDecl *OCD) { 19808ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = OCD->getClassInterface()->getNameAsString(); 19818ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string CategoryName = OCD->getNameAsString(); 19827ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 19835f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 16> InstanceMethodSels; 19845f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 1985653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCCategoryImplDecl::instmeth_iterator 198617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->instmeth_begin(), endIter = OCD->instmeth_end(); 1987653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 19887ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 19897ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 19907ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 19918a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 19927ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 19937ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 19947ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 19955f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 16> ClassMethodSels; 19965f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> ClassMethodTypes; 19971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCCategoryImplDecl::classmeth_iterator 199817945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->classmeth_begin(), endIter = OCD->classmeth_end(); 1999653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 20007ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 20017ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 20027ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 20038a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 20047ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 20057ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 20067ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 20075f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<std::string, 16> Protocols; 2008ad9e06d82ae627e858e5bfe4a7f1f9337b5b0a15David Chisnall const ObjCCategoryDecl *CatDecl = OCD->getCategoryDecl(); 2009ad9e06d82ae627e858e5bfe4a7f1f9337b5b0a15David Chisnall const ObjCList<ObjCProtocolDecl> &Protos = CatDecl->getReferencedProtocols(); 20107ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCList<ObjCProtocolDecl>::iterator I = Protos.begin(), 20117ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar E = Protos.end(); I != E; ++I) 2012d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 20137ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 201420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 201520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(CategoryName)); 201620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ClassName)); 20171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Instance method list 20183c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 2019a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, InstanceMethodSels, InstanceMethodTypes, 202020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov false), PtrTy)); 202120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Class method list 20223c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 2023a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, ClassMethodSels, ClassMethodTypes, true), 202420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy)); 202520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocol list 20263c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast( 202720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolList(Protocols), PtrTy)); 20283c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Categories.push_back(llvm::ConstantExpr::getBitCast( 20297650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner MakeGlobal(llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, 203047a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson PtrTy, PtrTy, PtrTy, NULL), Elements), PtrTy)); 203120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 20327ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 2033d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianllvm::Constant *CGObjCGNU::GeneratePropertyList(const ObjCImplementationDecl *OID, 20345f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<Selector> &InstanceMethodSels, 20355f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<llvm::Constant*> &InstanceMethodTypes) { 2036d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ASTContext &Context = CGM.getContext(); 2037d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // 2038d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Property metadata: name, attributes, isSynthesized, setter name, setter 2039d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // types, getter name, getter types. 20407650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *PropertyMetadataTy = llvm::StructType::get( 2041d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, Int8Ty, Int8Ty, PtrToInt8Ty, PtrToInt8Ty, PtrToInt8Ty, 2042d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, NULL); 2043d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Properties; 2044d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 2045d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 2046d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all of the property methods need adding to the method list and to the 2047d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // property metadata list. 2048d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (ObjCImplDecl::propimpl_iterator 2049d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter = OID->propimpl_begin(), endIter = OID->propimpl_end(); 2050d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 2051d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Fields; 2052262bc18e32500558af7cb0afa205b34bd37bafedDavid Blaikie ObjCPropertyDecl *property = iter->getPropertyDecl(); 2053581deb3da481053c4993c7600f97acf7768caac5David Blaikie ObjCPropertyImplDecl *propertyImpl = *iter; 205442ba04a072c69d84a6660e4498215086662910acDavid Chisnall bool isSynthesized = (propertyImpl->getPropertyImplementation() == 205542ba04a072c69d84a6660e4498215086662910acDavid Chisnall ObjCPropertyImplDecl::Synthesize); 2056d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 2057891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall Fields.push_back(MakePropertyEncodingString(property, OID)); 2058d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 2059d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian property->getPropertyAttributes())); 206042ba04a072c69d84a6660e4498215086662910acDavid Chisnall Fields.push_back(llvm::ConstantInt::get(Int8Ty, isSynthesized)); 2061d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *getter = property->getGetterMethodDecl()) { 2062d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 2063d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(getter,TypeStr); 2064d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 206542ba04a072c69d84a6660e4498215086662910acDavid Chisnall if (isSynthesized) { 206642ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodTypes.push_back(TypeEncoding); 206742ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodSels.push_back(getter->getSelector()); 206842ba04a072c69d84a6660e4498215086662910acDavid Chisnall } 2069d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(getter->getSelector().getAsString())); 2070d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 2071d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 2072d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 2073d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 2074d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 2075d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *setter = property->getSetterMethodDecl()) { 2076d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 2077d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(setter,TypeStr); 2078d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 207942ba04a072c69d84a6660e4498215086662910acDavid Chisnall if (isSynthesized) { 208042ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodTypes.push_back(TypeEncoding); 208142ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodSels.push_back(setter->getSelector()); 208242ba04a072c69d84a6660e4498215086662910acDavid Chisnall } 2083d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(setter->getSelector().getAsString())); 2084d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 2085d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 2086d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 2087d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 2088d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 2089d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 2090d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 2091d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType *PropertyArrayTy = 2092d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType::get(PropertyMetadataTy, Properties.size()); 2093d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyArray = llvm::ConstantArray::get(PropertyArrayTy, 2094d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties); 2095d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* PropertyListInitFields[] = 2096d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian {llvm::ConstantInt::get(IntTy, Properties.size()), NULLPtr, PropertyArray}; 2097d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 2098d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyListInit = 2099c5cbb909e8a27deb8f1a2b6b7bf56a96051af81aChris Lattner llvm::ConstantStruct::getAnon(PropertyListInitFields); 2100d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian return new llvm::GlobalVariable(TheModule, PropertyListInit->getType(), false, 2101d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::InternalLinkage, PropertyListInit, 2102d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ".objc_property_list"); 2103d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian} 2104d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 210529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnallvoid CGObjCGNU::RegisterAlias(const ObjCCompatibleAliasDecl *OAD) { 210629254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // Get the class declaration for which the alias is specified. 210729254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall ObjCInterfaceDecl *ClassDecl = 210829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall const_cast<ObjCInterfaceDecl *>(OAD->getClassInterface()); 210929254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall std::string ClassName = ClassDecl->getNameAsString(); 211029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall std::string AliasName = OAD->getNameAsString(); 211129254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall ClassAliases.push_back(ClassAliasPair(ClassName,AliasName)); 211229254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall} 211329254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 21147ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateClass(const ObjCImplementationDecl *OID) { 21157ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ASTContext &Context = CGM.getContext(); 21167ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 21177ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the superclass name. 21181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCInterfaceDecl * SuperClassDecl = 21197ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar OID->getClassInterface()->getSuperClass(); 21208ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string SuperClassName; 21212a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (SuperClassDecl) { 21228ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner SuperClassName = SuperClassDecl->getNameAsString(); 21232a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner EmitClassRef(SuperClassName); 21242a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 21257ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 21267ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the class name 212709dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner ObjCInterfaceDecl *ClassDecl = 212809dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner const_cast<ObjCInterfaceDecl *>(OID->getClassInterface()); 21298ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = ClassDecl->getNameAsString(); 21302a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // Emit the symbol that is used to generate linker errors if this class is 21312a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // referenced in other modules but not declared. 2132c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian std::string classSymbolName = "__objc_class_name_" + ClassName; 21331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (llvm::GlobalVariable *symbol = 2134c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian TheModule.getGlobalVariable(classSymbolName)) { 21354a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson symbol->setInitializer(llvm::ConstantInt::get(LongTy, 0)); 2136c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } else { 21371c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, LongTy, false, 21384a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::GlobalValue::ExternalLinkage, llvm::ConstantInt::get(LongTy, 0), 21391c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson classSymbolName); 2140c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } 21411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21422bebbf0acee55404de4b8846713b64429e744e8fDaniel Dunbar // Get the size of instances. 21435f022d82696c84e4d127c558871d68ac6273274eKen Dyck int instanceSize = 21445f022d82696c84e4d127c558871d68ac6273274eKen Dyck Context.getASTObjCImplementationLayout(OID).getSize().getQuantity(); 21457ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 21467ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance variables. 21475f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> IvarNames; 21485f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> IvarTypes; 21495f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> IvarOffsets; 21501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2151d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> IvarOffsetValues; 2152917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall SmallVector<bool, 16> WeakIvars; 2153917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall SmallVector<bool, 16> StrongIvars; 2154d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 21551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump int superInstanceSize = !SuperClassDecl ? 0 : 21565f022d82696c84e4d127c558871d68ac6273274eKen Dyck Context.getASTObjCInterfaceLayout(SuperClassDecl).getSize().getQuantity(); 21579cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // For non-fragile ivars, set the instance size to 0 - {the size of just this 21589cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // class}. The runtime will then set this to the correct value on load. 21597edf9e38b91917b661277601c0e448eef0eb2b56Richard Smith if (CGM.getLangOpts().ObjCRuntime.isNonFragile()) { 21609cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian instanceSize = 0 - (instanceSize - superInstanceSize); 21619cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 21627f63cb098f2461643f71ea590c1a477603f27f63David Chisnall 2163db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose for (const ObjCIvarDecl *IVD = ClassDecl->all_declared_ivar_begin(); IVD; 2164db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose IVD = IVD->getNextIvar()) { 21657ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Store the name 21667f63cb098f2461643f71ea590c1a477603f27f63David Chisnall IvarNames.push_back(MakeConstantString(IVD->getNameAsString())); 21677ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the type encoding for this ivar 21687ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 21697f63cb098f2461643f71ea590c1a477603f27f63David Chisnall Context.getObjCEncodingForType(IVD->getType(), TypeStr); 21708a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarTypes.push_back(MakeConstantString(TypeStr)); 21717ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the offset 2172e5b4666d9b86ea30b90b599691e75d380f84ddd6Eli Friedman uint64_t BaseOffset = ComputeIvarBaseOffset(CGM, OID, IVD); 2173aecbf24a6bad049437f8fec97e557d414003a3dbDavid Chisnall uint64_t Offset = BaseOffset; 21747edf9e38b91917b661277601c0e448eef0eb2b56Richard Smith if (CGM.getLangOpts().ObjCRuntime.isNonFragile()) { 2175d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Offset = BaseOffset - superInstanceSize; 21769cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 217763ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall llvm::Constant *OffsetValue = llvm::ConstantInt::get(IntTy, Offset); 217863ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall // Create the direct offset value 217963ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall std::string OffsetName = "__objc_ivar_offset_value_" + ClassName +"." + 218063ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall IVD->getNameAsString(); 218163ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall llvm::GlobalVariable *OffsetVar = TheModule.getGlobalVariable(OffsetName); 218263ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall if (OffsetVar) { 218363ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall OffsetVar->setInitializer(OffsetValue); 218463ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall // If this is the real definition, change its linkage type so that 218563ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall // different modules will use this one, rather than their private 218663ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall // copy. 218763ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall OffsetVar->setLinkage(llvm::GlobalValue::ExternalLinkage); 218863ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall } else 218963ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall OffsetVar = new llvm::GlobalVariable(TheModule, IntTy, 2190d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian false, llvm::GlobalValue::ExternalLinkage, 219163ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall OffsetValue, 2192d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian "__objc_ivar_offset_value_" + ClassName +"." + 219363ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall IVD->getNameAsString()); 219463ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall IvarOffsets.push_back(OffsetValue); 219563ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall IvarOffsetValues.push_back(OffsetVar); 2196917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Qualifiers::ObjCLifetime lt = IVD->getType().getQualifiers().getObjCLifetime(); 2197917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall switch (lt) { 2198917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall case Qualifiers::OCL_Strong: 2199917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall StrongIvars.push_back(true); 2200917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall WeakIvars.push_back(false); 2201917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall break; 2202917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall case Qualifiers::OCL_Weak: 2203917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall StrongIvars.push_back(false); 2204917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall WeakIvars.push_back(true); 2205917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall break; 2206917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall default: 2207917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall StrongIvars.push_back(false); 2208917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall WeakIvars.push_back(false); 2209917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 22107ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 2211917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *StrongIvarBitmap = MakeBitField(StrongIvars); 2212917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *WeakIvarBitmap = MakeBitField(WeakIvars); 22139f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::GlobalVariable *IvarOffsetArray = 22149f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall MakeGlobalArray(PtrToIntTy, IvarOffsetValues, ".ivar.offsets"); 22159f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 22167ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 22177ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 22185f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 16> InstanceMethodSels; 22195f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 22201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCImplementationDecl::instmeth_iterator 222117945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->instmeth_begin(), endIter = OID->instmeth_end(); 2222653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 22237ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 22247ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 22257ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 22268a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 22277ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 2228d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 2229d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Properties = GeneratePropertyList(OID, InstanceMethodSels, 2230d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes); 2231d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 22327ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 22337ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 22345f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 16> ClassMethodSels; 22355f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> ClassMethodTypes; 2236653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCImplementationDecl::classmeth_iterator 223717945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->classmeth_begin(), endIter = OID->classmeth_end(); 2238653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 22397ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 22407ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 22417ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 22428a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 22437ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 22447ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 22455f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<std::string, 16> Protocols; 2246a5f4441de7890953460d95f4e88b9fa432b48dc2Argyrios Kyrtzidis for (ObjCInterfaceDecl::protocol_iterator 2247a5f4441de7890953460d95f4e88b9fa432b48dc2Argyrios Kyrtzidis I = ClassDecl->protocol_begin(), 2248a5f4441de7890953460d95f4e88b9fa432b48dc2Argyrios Kyrtzidis E = ClassDecl->protocol_end(); I != E; ++I) 2249d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 22507ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 22517ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 22527ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 225320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the superclass pointer. 225420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass; 22558ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner if (!SuperClassName.empty()) { 225620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov SuperClass = MakeConstantString(SuperClassName, ".super_class_name"); 225720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } else { 225803e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson SuperClass = llvm::ConstantPointerNull::get(PtrToInt8Ty); 225920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 226020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Empty vector used to construct empty method lists 22615f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 1> empty; 226220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the method and instance variable lists 226320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MethodList = GenerateMethodList(ClassName, "", 2264a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner InstanceMethodSels, InstanceMethodTypes, false); 226520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = GenerateMethodList(ClassName, "", 2266a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassMethodSels, ClassMethodTypes, true); 226720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IvarList = GenerateIvarList(IvarNames, IvarTypes, 226820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarOffsets); 22691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Irrespective of whether we are compiling for a fragile or non-fragile ABI, 22708a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // we emit a symbol containing the offset for each ivar in the class. This 22718a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // allows code compiled for the non-Fragile ABI to inherit from code compiled 22728a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // for the legacy ABI, without causing problems. The converse is also 22738a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // possible, but causes all ivar accesses to be fragile. 2274e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall 22758a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Offset pointer for getting at the correct field in the ivar list when 22768a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // setting up the alias. These are: The base address for the global, the 22778a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // ivar array (second field), the ivar in this list (set for each ivar), and 22788a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // the offset (third field in ivar structure) 2279917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Type *IndexTy = Int32Ty; 22808a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *offsetPointerIndexes[] = {Zeros[0], 22811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::ConstantInt::get(IndexTy, 1), 0, 22828a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::ConstantInt::get(IndexTy, 2) }; 22838a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall 2284db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose unsigned ivarIndex = 0; 2285db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose for (const ObjCIvarDecl *IVD = ClassDecl->all_declared_ivar_begin(); IVD; 2286db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose IVD = IVD->getNextIvar()) { 22878a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall const std::string Name = "__objc_ivar_offset_" + ClassName + '.' 2288e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall + IVD->getNameAsString(); 2289db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose offsetPointerIndexes[2] = llvm::ConstantInt::get(IndexTy, ivarIndex); 22908a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Get the correct ivar field 22918a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *offsetValue = llvm::ConstantExpr::getGetElementPtr( 2292a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad IvarList, offsetPointerIndexes); 2293e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // Get the existing variable, if one exists. 22948a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *offset = TheModule.getNamedGlobal(Name); 22958a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (offset) { 229674a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek offset->setInitializer(offsetValue); 229774a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek // If this is the real definition, change its linkage type so that 229874a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek // different modules will use this one, rather than their private 229974a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek // copy. 230074a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek offset->setLinkage(llvm::GlobalValue::ExternalLinkage); 23018a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } else { 230274a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek // Add a new alias if there isn't one already. 230374a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek offset = new llvm::GlobalVariable(TheModule, offsetValue->getType(), 230474a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek false, llvm::GlobalValue::ExternalLinkage, offsetValue, Name); 230574a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek (void) offset; // Silence dead store warning. 23068a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 2307db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose ++ivarIndex; 23088a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 23099d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall llvm::Constant *ZeroPtr = llvm::ConstantInt::get(IntPtrTy, 0); 231020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //Generate metaclass for class methods 231120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClassStruct = GenerateClassStructure(NULLPtr, 23121804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall NULLPtr, 0x12L, ClassName.c_str(), 0, Zeros[0], GenerateIvarList( 2313917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall empty, empty, empty), ClassMethodList, NULLPtr, 23149d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall NULLPtr, NULLPtr, ZeroPtr, ZeroPtr, true); 23155efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 231620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the class structure 23178ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner llvm::Constant *ClassStruct = 2318d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateClassStructure(MetaClassStruct, SuperClass, 0x11L, 23198ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner ClassName.c_str(), 0, 23204a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::ConstantInt::get(LongTy, instanceSize), IvarList, 2321d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList, GenerateProtocolList(Protocols), IvarOffsetArray, 2322917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Properties, StrongIvarBitmap, WeakIvarBitmap); 23235efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 23245efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Resolve the class aliases, if they exist. 23255efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (ClassPtrAlias) { 23260b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall ClassPtrAlias->replaceAllUsesWith( 23273c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(ClassStruct, IdTy)); 23280b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall ClassPtrAlias->eraseFromParent(); 23295efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ClassPtrAlias = 0; 23305efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 23315efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (MetaClassPtrAlias) { 23320b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall MetaClassPtrAlias->replaceAllUsesWith( 23333c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(MetaClassStruct, IdTy)); 23340b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall MetaClassPtrAlias->eraseFromParent(); 23355efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias = 0; 23365efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 23375efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 233820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Add class structure to list to be added to the symtab later 23393c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson ClassStruct = llvm::ConstantExpr::getBitCast(ClassStruct, PtrToInt8Ty); 234020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(ClassStruct); 234120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 234220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 2343c38e9affd4519ea199af22419c8c794973cc4b23Fariborz Jahanian 23441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpllvm::Function *CGObjCGNU::ModuleInitFunction() { 234520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Only emit an ObjC load function if no Objective-C stuff has been called 234620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov if (Classes.empty() && Categories.empty() && ConstantStrings.empty() && 23479f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ExistingProtocols.empty() && SelectorTable.empty()) 234820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return NULL; 23491b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 2350d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all referenced protocols to a category. 2351d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolHolderCategory(); 2352d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 23532acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::StructType *SelStructTy = dyn_cast<llvm::StructType>( 2354e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelectorTy->getElementType()); 2355ef6de3da8572607f786303c07150daa6e140ab19Jay Foad llvm::Type *SelStructPtrTy = SelectorTy; 2356e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (SelStructTy == 0) { 23577650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner SelStructTy = llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, NULL); 235896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson SelStructPtrTy = llvm::PointerType::getUnqual(SelStructTy); 2359e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 2360e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 236120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 236271238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::Constant *Statics = NULLPtr; 236320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate statics list: 236471238f67c5df13eef19450d66b7a7ab28377192aChris Lattner if (ConstantStrings.size()) { 236596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *StaticsArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 236671238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.size() + 1); 236771238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.push_back(NULLPtr); 23688a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall 23694e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie StringRef StringClass = CGM.getLangOpts().ObjCConstantStringClass; 23709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 23711b0969590e712d7d52fc9c0d43d3ab85c36d07a6Daniel Dunbar if (StringClass.empty()) StringClass = "NXConstantString"; 23729f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 23738a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MakeConstantString(StringClass, 23748a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ".objc_static_class_name")); 23757db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson Elements.push_back(llvm::ConstantArray::get(StaticsArrayTy, 237671238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings)); 23771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::StructType *StaticsListTy = 23787650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType::get(PtrToInt8Ty, StaticsArrayTy, NULL); 2379a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson llvm::Type *StaticsListPtrTy = 238096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(StaticsListTy); 238171238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListTy, Elements, ".objc_statics"); 23821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::ArrayType *StaticsListArrayTy = 238396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType::get(StaticsListPtrTy, 2); 238471238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.clear(); 238571238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.push_back(Statics); 2386c9c88b4159791c48e486ca94e3743b5979e2b7a6Owen Anderson Elements.push_back(llvm::Constant::getNullValue(StaticsListPtrTy)); 238771238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListArrayTy, Elements, ".objc_statics_ptr"); 23883c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Statics = llvm::ConstantExpr::getBitCast(Statics, PtrTy); 238971238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 239020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of classes, categories, and constant objects 239196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ClassListTy = llvm::ArrayType::get(PtrToInt8Ty, 239220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size() + Categories.size() + 2); 23937650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *SymTabTy = llvm::StructType::get(LongTy, SelStructPtrTy, 23940032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getInt16Ty(VMContext), 23950032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getInt16Ty(VMContext), 2396630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ClassListTy, NULL); 239720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 239820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 239920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Pointer to an array of selectors used in this module. 240020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Selectors; 24019f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::vector<llvm::GlobalAlias*> SelectorAliases; 24029f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall for (SelectorMap::iterator iter = SelectorTable.begin(), 24039f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall iterEnd = SelectorTable.end(); iter != iterEnd ; ++iter) { 24049f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 24059f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string SelNameStr = iter->first.getAsString(); 24069f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *SelName = ExportUniqueString(SelNameStr, ".objc_sel_name"); 24079f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 24085f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<TypedSelector> &Types = iter->second; 24095f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner for (SmallVectorImpl<TypedSelector>::iterator i = Types.begin(), 24109f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall e = Types.end() ; i!=e ; i++) { 24119f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 24129f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *SelectorTypeEncoding = NULLPtr; 24139f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (!i->first.empty()) 24149f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorTypeEncoding = MakeConstantString(i->first, ".objc_sel_types"); 24159f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 24169f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(SelName); 24179f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(SelectorTypeEncoding); 24189f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 24199f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.clear(); 24209f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 24219f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // Store the selector alias for later replacement 24229f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorAliases.push_back(i->second); 24239f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 242420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 24259f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall unsigned SelectorCount = Selectors.size(); 24269f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // NULL-terminate the selector list. This should not actually be required, 24279f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // because the selector list has a length field. Unfortunately, the GCC 24289f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // runtime decides to ignore the length field and expects a NULL terminator, 24299f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // and GCC cooperates with this by always setting the length to 0. 243020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 243120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 243208e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 243320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 24349f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 243520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of static selectors 24369f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(llvm::ConstantInt::get(LongTy, SelectorCount)); 24379f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *SelectorList = MakeGlobalArray(SelStructTy, Selectors, 243820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_selector_list"); 24391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantExpr::getBitCast(SelectorList, 2440e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelStructPtrTy)); 244120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 244220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Now that all of the static selectors exist, create pointers to them. 24439f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall for (unsigned int i=0 ; i<SelectorCount ; i++) { 24449f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 244520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 2446917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ConstantInt::get(Int32Ty, i), Zeros[0]}; 24479f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // FIXME: We're generating redundant loads and stores here! 2448c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Constant *SelPtr = llvm::ConstantExpr::getGetElementPtr(SelectorList, 2449a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad makeArrayRef(Idxs, 2)); 2450e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // If selectors are defined as an opaque type, cast the pointer to this 2451e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // type. 2452c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SelPtr = llvm::ConstantExpr::getBitCast(SelPtr, SelectorTy); 24539f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorAliases[i]->replaceAllUsesWith(SelPtr); 24549f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorAliases[i]->eraseFromParent(); 245520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 24569f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 245720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of classes defined. 24581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantInt::get(llvm::Type::getInt16Ty(VMContext), 245920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size())); 246020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of categories defined 24611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantInt::get(llvm::Type::getInt16Ty(VMContext), 246220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Categories.size())); 246320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an array of classes, then categories, then static object instances 246420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.insert(Classes.end(), Categories.begin(), Categories.end()); 246520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // NULL-terminated list of static object instances (mainly constant strings) 246620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(Statics); 246720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(NULLPtr); 24687db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *ClassList = llvm::ConstantArray::get(ClassListTy, Classes); 246920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassList); 24701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Construct the symbol table 247120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SymTab= MakeGlobal(SymTabTy, Elements); 247220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 247320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The symbol table is contained in a module which has some version-checking 247420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // constants 24757650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType * ModuleTy = llvm::StructType::get(LongTy, LongTy, 2476a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall PtrToInt8Ty, llvm::PointerType::getUnqual(SymTabTy), 2477f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall (RuntimeVersion >= 10) ? IntTy : NULL, NULL); 247820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 24799f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // Runtime version, used for ABI compatibility checking. 24809f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(llvm::ConstantInt::get(LongTy, RuntimeVersion)); 248191a0b51438e5259a79d68d7450c453827beed9e2Fariborz Jahanian // sizeof(ModuleTy) 248225a6a84cf5067b32c271e3ba078676dee838798dMicah Villmow llvm::DataLayout td(&TheModule); 2483e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck Elements.push_back( 2484e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck llvm::ConstantInt::get(LongTy, 2485e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck td.getTypeSizeInBits(ModuleTy) / 2486e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck CGM.getContext().getCharWidth())); 24879f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 24889f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // The path to the source file where this module was declared 24899f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SourceManager &SM = CGM.getContext().getSourceManager(); 24909f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const FileEntry *mainFile = SM.getFileEntryForID(SM.getMainFileID()); 24919f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string path = 24929f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string(mainFile->getDir()->getName()) + '/' + mainFile->getName(); 24939f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(MakeConstantString(path, ".objc_source_file_name")); 249420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SymTab); 2495a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall 2496f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall if (RuntimeVersion >= 10) 24974e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie switch (CGM.getLangOpts().getGC()) { 2498f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall case LangOptions::GCOnly: 2499a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall Elements.push_back(llvm::ConstantInt::get(IntTy, 2)); 2500a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall break; 2501f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall case LangOptions::NonGC: 25024e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (CGM.getLangOpts().ObjCAutoRefCount) 2503f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall Elements.push_back(llvm::ConstantInt::get(IntTy, 1)); 2504f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall else 2505f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall Elements.push_back(llvm::ConstantInt::get(IntTy, 0)); 2506f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall break; 2507f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall case LangOptions::HybridGC: 2508f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall Elements.push_back(llvm::ConstantInt::get(IntTy, 1)); 2509f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall break; 2510f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall } 2511a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall 251220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *Module = MakeGlobal(ModuleTy, Elements); 251320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 251420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create the load function calling the runtime entry point with the module 251520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // structure 251620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function * LoadFunction = llvm::Function::Create( 25170032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), false), 251820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, ".objc_load_function", 251920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &TheModule); 25200032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::BasicBlock *EntryBB = 25210032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::BasicBlock::Create(VMContext, "entry", LoadFunction); 2522a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson CGBuilderTy Builder(VMContext); 252320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.SetInsertPoint(EntryBB); 252426c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 252595d318c4c10437db40ca6e15fdf32e04012da58eBenjamin Kramer llvm::FunctionType *FT = 2526da549e8995c447542d5631b8b67fcc3a9582797aJay Foad llvm::FunctionType::get(Builder.getVoidTy(), 2527da549e8995c447542d5631b8b67fcc3a9582797aJay Foad llvm::PointerType::getUnqual(ModuleTy), true); 252895d318c4c10437db40ca6e15fdf32e04012da58eBenjamin Kramer llvm::Value *Register = CGM.CreateRuntimeFunction(FT, "__objc_exec_class"); 252920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateCall(Register, Module); 253029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 2531dccaa239ec125926a9c1fb5f328bce349e41637bDavid Chisnall if (!ClassAliases.empty()) { 253229254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::Type *ArgTypes[2] = {PtrTy, PtrToInt8Ty}; 253329254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::FunctionType *RegisterAliasTy = 253429254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::FunctionType::get(Builder.getVoidTy(), 253529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall ArgTypes, false); 253629254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::Function *RegisterAlias = llvm::Function::Create( 253729254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall RegisterAliasTy, 253829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::GlobalValue::ExternalWeakLinkage, "class_registerAlias_np", 253929254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall &TheModule); 254029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::BasicBlock *AliasBB = 254129254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::BasicBlock::Create(VMContext, "alias", LoadFunction); 254229254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::BasicBlock *NoAliasBB = 254329254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::BasicBlock::Create(VMContext, "no_alias", LoadFunction); 254429254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 254529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // Branch based on whether the runtime provided class_registerAlias_np() 254629254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::Value *HasRegisterAlias = Builder.CreateICmpNE(RegisterAlias, 254729254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::Constant::getNullValue(RegisterAlias->getType())); 254829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall Builder.CreateCondBr(HasRegisterAlias, AliasBB, NoAliasBB); 254929254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 255029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // The true branch (has alias registration fucntion): 255129254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall Builder.SetInsertPoint(AliasBB); 255229254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // Emit alias registration calls: 255329254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall for (std::vector<ClassAliasPair>::iterator iter = ClassAliases.begin(); 255429254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall iter != ClassAliases.end(); ++iter) { 255529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::Constant *TheClass = 255629254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall TheModule.getGlobalVariable(("_OBJC_CLASS_" + iter->first).c_str(), 255729254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall true); 255829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall if (0 != TheClass) { 255929254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall TheClass = llvm::ConstantExpr::getBitCast(TheClass, PtrTy); 256029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall Builder.CreateCall2(RegisterAlias, TheClass, 256129254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall MakeConstantString(iter->second)); 256229254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall } 256329254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall } 256429254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // Jump to end: 256529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall Builder.CreateBr(NoAliasBB); 256629254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 256729254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // Missing alias registration function, just return from the function: 256829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall Builder.SetInsertPoint(NoAliasBB); 256929254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall } 257020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateRetVoid(); 25719cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 257220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return LoadFunction; 257320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 25747ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 2575679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanianllvm::Function *CGObjCGNU::GenerateMethod(const ObjCMethodDecl *OMD, 25761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCContainerDecl *CD) { 25771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCCategoryImplDecl *OCD = 25783e0a540b6d846178857289ec0eb8470a278d11a3Steve Naroff dyn_cast<ObjCCategoryImplDecl>(OMD->getDeclContext()); 25795f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef CategoryName = OCD ? OCD->getName() : ""; 25805f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef ClassName = CD->getName(); 25819f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Selector MethodName = OMD->getSelector(); 2582f8d49f64ef6ab7e632717a31631fc289aab69428Douglas Gregor bool isClassMethod = !OMD->isInstanceMethod(); 2583391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 2584541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar CodeGenTypes &Types = CGM.getTypes(); 25852acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::FunctionType *MethodTy = 2586de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall Types.GetFunctionType(Types.arrangeObjCMethodDeclaration(OMD)); 258720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::string FunctionName = SymbolNameForMethod(ClassName, CategoryName, 258820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodName, isClassMethod); 258920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 2590d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar llvm::Function *Method 25911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump = llvm::Function::Create(MethodTy, 25921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalValue::InternalLinkage, 25931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump FunctionName, 25941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump &TheModule); 2595391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner return Method; 2596391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 2597391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 2598789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetPropertyGetFunction() { 25999f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return GetPropertyFn; 260049f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 260149f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 2602789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetPropertySetFunction() { 26039f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return SetPropertyFn; 260449f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 260549f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 2606ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenekllvm::Constant *CGObjCGNU::GetOptimizedPropertySetFunction(bool atomic, 2607ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool copy) { 2608ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return 0; 2609ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 2610ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 2611789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetGetStructFunction() { 26129f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return GetStructPropertyFn; 26138fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall} 2614789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetSetStructFunction() { 26159f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return SetStructPropertyFn; 26166cc590602f41c3e98e8af0023d54296c8eca7910Fariborz Jahanian} 2617d397cfef01d49a41554309d67ea26340c39e1e94David Chisnallllvm::Constant *CGObjCGNU::GetCppAtomicObjectGetFunction() { 2618d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall return 0; 2619d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall} 2620d397cfef01d49a41554309d67ea26340c39e1e94David Chisnallllvm::Constant *CGObjCGNU::GetCppAtomicObjectSetFunction() { 2621e3173021fa3bfdf7e6759d67838e385a83b2d57eFariborz Jahanian return 0; 2622e3173021fa3bfdf7e6759d67838e385a83b2d57eFariborz Jahanian} 26236cc590602f41c3e98e8af0023d54296c8eca7910Fariborz Jahanian 2624309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbarllvm::Constant *CGObjCGNU::EnumerationMutationFunction() { 26259f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return EnumerationMutationFn; 26262abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson} 26272abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson 26289f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitSynchronizedStmt(CodeGenFunction &CGF, 2629f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtSynchronizedStmt &S) { 26309735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall EmitAtSynchronizedStmt(CGF, S, SyncEnterFn, SyncExitFn); 2631f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall} 26325dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 26335dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 26349f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitTryStmt(CodeGenFunction &CGF, 2635f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtTryStmt &S) { 2636f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // Unlike the Apple non-fragile runtimes, which also uses 2637f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // unwind-based zero cost exceptions, the GNU Objective C runtime's 2638f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // EH support isn't a veneer over C++ EH. Instead, exception 2639c686004145b1f4dbeb38173a0886ba7040ae0089David Chisnall // objects are created by objc_exception_throw and destroyed by 2640f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // the personality function; this avoids the need for bracketing 2641f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // catch handlers with calls to __blah_begin_catch/__blah_end_catch 2642f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // (or even _Unwind_DeleteException), but probably doesn't 2643f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // interoperate very well with foreign exceptions. 26449735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // 264580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // In Objective-C++ mode, we actually emit something equivalent to the C++ 26469735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // exception handler. 26479735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall EmitTryCatchStmt(CGF, S, EnterCatchFn, ExitCatchFn, ExceptionReThrowFn); 26489735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return ; 264964d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 265064d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 26519f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitThrowStmt(CodeGenFunction &CGF, 26526a3c70ec59804347c99e96aa13934f63f4fed573Fariborz Jahanian const ObjCAtThrowStmt &S, 26536a3c70ec59804347c99e96aa13934f63f4fed573Fariborz Jahanian bool ClearInsertionPoint) { 26545dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ExceptionAsObject; 26555dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 26565dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const Expr *ThrowExpr = S.getThrowExpr()) { 26572b014d6c0c6b8ac94b416ac37dfc7931f20777a7John McCall llvm::Value *Exception = CGF.EmitObjCThrowOperand(ThrowExpr); 26581e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ExceptionAsObject = Exception; 26595dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 26601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((!CGF.ObjCEHValueStack.empty() && CGF.ObjCEHValueStack.back()) && 26615dc0867af17b3bd6f567897433853b2b4767446cChris Lattner "Unexpected rethrow outside @catch block."); 26625dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ExceptionAsObject = CGF.ObjCEHValueStack.back(); 26635dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 2664578faa837b552403e2002b97fdfbfde14f2448e5Benjamin Kramer ExceptionAsObject = CGF.Builder.CreateBitCast(ExceptionAsObject, IdTy); 2665c686004145b1f4dbeb38173a0886ba7040ae0089David Chisnall llvm::CallSite Throw = 2666c686004145b1f4dbeb38173a0886ba7040ae0089David Chisnall CGF.EmitCallOrInvoke(ExceptionThrowFn, ExceptionAsObject); 2667c686004145b1f4dbeb38173a0886ba7040ae0089David Chisnall Throw.setDoesNotReturn(); 2668c972c92f757957bf414c6195b1f2ae25a2b4dd37Eli Friedman CGF.Builder.CreateUnreachable(); 26696a3c70ec59804347c99e96aa13934f63f4fed573Fariborz Jahanian if (ClearInsertionPoint) 26706a3c70ec59804347c99e96aa13934f63f4fed573Fariborz Jahanian CGF.Builder.ClearInsertionPoint(); 267164d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 267264d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 26739f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallllvm::Value * CGObjCGNU::EmitObjCWeakRead(CodeGenFunction &CGF, 26741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *AddrWeakObj) { 2675ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 267631fc0c1a16dabd397dd3323fb0dbe7052b87abd0David Chisnall AddrWeakObj = EnforceType(B, AddrWeakObj, PtrToIdTy); 2677ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return B.CreateCall(WeakReadFn, AddrWeakObj); 26786dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian} 26796dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian 26809f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCWeakAssign(CodeGenFunction &CGF, 26811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *src, llvm::Value *dst) { 2682ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2683ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2684ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2685ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall2(WeakAssignFn, src, dst); 26863e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian} 26873e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian 26889f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCGlobalAssign(CodeGenFunction &CGF, 2689021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian llvm::Value *src, llvm::Value *dst, 2690021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian bool threadlocal) { 2691ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2692ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2693ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2694021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian if (!threadlocal) 2695021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian B.CreateCall2(GlobalAssignFn, src, dst); 2696021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian else 2697021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian // FIXME. Add threadloca assign API 2698b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("EmitObjCGlobalAssign - Threal Local API NYI"); 269958626500527695865683d1d65053743de8770b60Fariborz Jahanian} 270058626500527695865683d1d65053743de8770b60Fariborz Jahanian 27019f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCIvarAssign(CodeGenFunction &CGF, 27026c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *src, llvm::Value *dst, 27036c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *ivarOffset) { 2704ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2705ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2706b44eda31a214ad88616acbe28c3f0a70268adc6cDavid Chisnall dst = EnforceType(B, dst, IdTy); 2707ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall3(IvarAssignFn, src, dst, ivarOffset); 27087eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian} 27097eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian 27109f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCStrongCastAssign(CodeGenFunction &CGF, 27111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *src, llvm::Value *dst) { 2712ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2713ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2714ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2715ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall2(StrongCastAssignFn, src, dst); 271658626500527695865683d1d65053743de8770b60Fariborz Jahanian} 271758626500527695865683d1d65053743de8770b60Fariborz Jahanian 27189f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitGCMemmoveCollectable(CodeGenFunction &CGF, 27191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *DestPtr, 2720082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *SrcPtr, 272155bcace250e1ff366e4482714b344b8cbc8be5f3Fariborz Jahanian llvm::Value *Size) { 2722ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 272368e5e1331d99140ae5dd7b27c3dd28618827dfc8David Chisnall DestPtr = EnforceType(B, DestPtr, PtrTy); 272468e5e1331d99140ae5dd7b27c3dd28618827dfc8David Chisnall SrcPtr = EnforceType(B, SrcPtr, PtrTy); 2725ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 272655bcace250e1ff366e4482714b344b8cbc8be5f3Fariborz Jahanian B.CreateCall3(MemMoveFn, DestPtr, SrcPtr, Size); 2727082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian} 2728082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian 27299cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianllvm::GlobalVariable *CGObjCGNU::ObjCIvarOffsetVariable( 27309cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *ID, 27319cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar) { 27329cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const std::string Name = "__objc_ivar_offset_" + ID->getNameAsString() 27339cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian + '.' + Ivar->getNameAsString(); 27349cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Emit the variable and initialize it with what we think the correct value 27359cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // is. This allows code compiled with non-fragile ivars to work correctly 27369cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // when linked against code which isn't (most of the time). 27378a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *IvarOffsetPointer = TheModule.getNamedGlobal(Name); 27388a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (!IvarOffsetPointer) { 2739e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // This will cause a run-time crash if we accidentally use it. A value of 2740e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // 0 would seem more sensible, but will silently overwrite the isa pointer 2741e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // causing a great deal of confusion. 2742e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall uint64_t Offset = -1; 2743e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // We can't call ComputeIvarBaseOffset() here if we have the 2744e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // implementation, because it will create an invalid ASTRecordLayout object 2745e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // that we are then stuck with forever, so we only initialize the ivar 2746e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // offset variable with a guess if we only have the interface. The 2747e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // initializer will be reset later anyway, when we are generating the class 2748e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // description. 2749e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall if (!CGM.getContext().getObjCImplementation( 2750cb421fa690da545b58a720abe5f1c49b166dbde7Dan Gohman const_cast<ObjCInterfaceDecl *>(ID))) 2751e5b4666d9b86ea30b90b599691e75d380f84ddd6Eli Friedman Offset = ComputeIvarBaseOffset(CGM, ID, Ivar); 2752d901da531433254210a08e8b1f9e1ad049b340aaDavid Chisnall 275349de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall llvm::ConstantInt *OffsetGuess = llvm::ConstantInt::get(Int32Ty, Offset, 2754243f108a7c5dc4733e9ef6b7b7c2cd0465cf2104Richard Trieu /*isSigned*/true); 27558a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Don't emit the guess in non-PIC code because the linker will not be able 27568a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // to replace it with the real version for a library. In non-PIC code you 27578a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // must compile with the fragile ABI if you want to use ivars from a 27581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // GCC-compiled class. 27595e219cf7f896873c1c1e64b9e87a7dade99debbaChandler Carruth if (CGM.getLangOpts().PICLevel || CGM.getLangOpts().PIELevel) { 27608a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *IvarOffsetGV = new llvm::GlobalVariable(TheModule, 2761917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Int32Ty, false, 27628a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalValue::PrivateLinkage, OffsetGuess, Name+".guess"); 27638a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetPointer = new llvm::GlobalVariable(TheModule, 27648a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetGV->getType(), false, llvm::GlobalValue::LinkOnceAnyLinkage, 27658a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetGV, Name); 27668a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } else { 27678a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetPointer = new llvm::GlobalVariable(TheModule, 27683c0ef8cc0dc246bd3083e8cdd63005e8873d36d2Benjamin Kramer llvm::Type::getInt32PtrTy(VMContext), false, 27693c0ef8cc0dc246bd3083e8cdd63005e8873d36d2Benjamin Kramer llvm::GlobalValue::ExternalLinkage, 0, Name); 27708a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 27719cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 27728a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall return IvarOffsetPointer; 27739cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 27749cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 27759f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallLValue CGObjCGNU::EmitObjCValueForIvar(CodeGenFunction &CGF, 2776598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 2777598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 2778598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 2779598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers) { 2780c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall const ObjCInterfaceDecl *ID = 2781c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall ObjectTy->getAs<ObjCObjectType>()->getInterface(); 27829777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar return EmitValueForIvarAtOffset(CGF, ID, BaseValue, Ivar, CVRQualifiers, 27839777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar EmitIvarOffset(CGF, ID, Ivar)); 27840bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian} 2785bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 27869cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianstatic const ObjCInterfaceDecl *FindIvarInterface(ASTContext &Context, 27879cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *OID, 27889cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *OIVD) { 2789db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose for (const ObjCIvarDecl *next = OID->all_declared_ivar_begin(); next; 2790db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose next = next->getNextIvar()) { 2791db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose if (OIVD == next) 27929cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return OID; 27939cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 27941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 27959cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Otherwise check in the super class. 27969cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (const ObjCInterfaceDecl *Super = OID->getSuperClass()) 27979cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return FindIvarInterface(Context, Super, OIVD); 27981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 27999cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return 0; 28009cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 28010bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian 28029f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallllvm::Value *CGObjCGNU::EmitIvarOffset(CodeGenFunction &CGF, 28032a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 2804f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar) { 2805260611a32535c851237926bfcf78869b13c07d5bJohn McCall if (CGM.getLangOpts().ObjCRuntime.isNonFragile()) { 28069cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Interface = FindIvarInterface(CGM.getContext(), Interface, Ivar); 280763ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall if (RuntimeVersion < 10) 280863ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall return CGF.Builder.CreateZExtOrBitCast( 280963ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall CGF.Builder.CreateLoad(CGF.Builder.CreateLoad( 281063ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall ObjCIvarOffsetVariable(Interface, Ivar), false, "ivar")), 281163ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall PtrDiffTy); 281263ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall std::string name = "__objc_ivar_offset_value_" + 281363ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall Interface->getNameAsString() +"." + Ivar->getNameAsString(); 281463ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall llvm::Value *Offset = TheModule.getGlobalVariable(name); 281563ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall if (!Offset) 281663ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall Offset = new llvm::GlobalVariable(TheModule, IntTy, 28173fc81d32314eca98b51846f493a8bc77cf14a701David Chisnall false, llvm::GlobalValue::LinkOnceAnyLinkage, 28183fc81d32314eca98b51846f493a8bc77cf14a701David Chisnall llvm::Constant::getNullValue(IntTy), name); 28196614845b4f6724da8c6aca14ea720dbd157883a7David Chisnall Offset = CGF.Builder.CreateLoad(Offset); 28206614845b4f6724da8c6aca14ea720dbd157883a7David Chisnall if (Offset->getType() != PtrDiffTy) 28216614845b4f6724da8c6aca14ea720dbd157883a7David Chisnall Offset = CGF.Builder.CreateZExtOrBitCast(Offset, PtrDiffTy); 28226614845b4f6724da8c6aca14ea720dbd157883a7David Chisnall return Offset; 28239cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 2824e5b4666d9b86ea30b90b599691e75d380f84ddd6Eli Friedman uint64_t Offset = ComputeIvarBaseOffset(CGF.CGM, Interface, Ivar); 2825e5b4666d9b86ea30b90b599691e75d380f84ddd6Eli Friedman return llvm::ConstantInt::get(PtrDiffTy, Offset, /*isSigned*/true); 2826f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian} 2827f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian 28289f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCRuntime * 28299f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclang::CodeGen::CreateGNUObjCRuntime(CodeGenModule &CGM) { 2830260611a32535c851237926bfcf78869b13c07d5bJohn McCall switch (CGM.getLangOpts().ObjCRuntime.getKind()) { 283111d3f4cc27e6b923fc32481dc1bb5ec46c7d1f4bDavid Chisnall case ObjCRuntime::GNUstep: 28329f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return new CGObjCGNUstep(CGM); 2833260611a32535c851237926bfcf78869b13c07d5bJohn McCall 283411d3f4cc27e6b923fc32481dc1bb5ec46c7d1f4bDavid Chisnall case ObjCRuntime::GCC: 2835260611a32535c851237926bfcf78869b13c07d5bJohn McCall return new CGObjCGCC(CGM); 2836260611a32535c851237926bfcf78869b13c07d5bJohn McCall 2837f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall case ObjCRuntime::ObjFW: 2838f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall return new CGObjCObjFW(CGM); 2839f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 2840260611a32535c851237926bfcf78869b13c07d5bJohn McCall case ObjCRuntime::FragileMacOSX: 2841260611a32535c851237926bfcf78869b13c07d5bJohn McCall case ObjCRuntime::MacOSX: 2842260611a32535c851237926bfcf78869b13c07d5bJohn McCall case ObjCRuntime::iOS: 2843260611a32535c851237926bfcf78869b13c07d5bJohn McCall llvm_unreachable("these runtimes are not GNU runtimes"); 2844260611a32535c851237926bfcf78869b13c07d5bJohn McCall } 2845260611a32535c851237926bfcf78869b13c07d5bJohn McCall llvm_unreachable("bad runtime"); 28460f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 2847