CGObjCGNU.cpp revision 31fc0c1a16dabd397dd3323fb0dbe7052b87abd0
120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//===------- CGObjCGNU.cpp - Emit LLVM Code from ASTs for a Module --------===// 20f984268b05edab2cc555a427c441baa9c252658Chris Lattner// 30f984268b05edab2cc555a427c441baa9c252658Chris Lattner// The LLVM Compiler Infrastructure 40f984268b05edab2cc555a427c441baa9c252658Chris Lattner// 50f984268b05edab2cc555a427c441baa9c252658Chris Lattner// This file is distributed under the University of Illinois Open Source 60f984268b05edab2cc555a427c441baa9c252658Chris Lattner// License. See LICENSE.TXT for details. 70f984268b05edab2cc555a427c441baa9c252658Chris Lattner// 80f984268b05edab2cc555a427c441baa9c252658Chris Lattner//===----------------------------------------------------------------------===// 90f984268b05edab2cc555a427c441baa9c252658Chris Lattner// 10fc8f0e14ad142ed811e90fbd9a30e419e301c717Chris Lattner// This provides Objective-C code generation targeting the GNU runtime. The 1120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// class in this file generates structures used by the GNU Objective-C runtime 1220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// library. These structures are defined in objc/objc.h and objc/objc-api.h in 1320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// the GNU runtime distribution. 140f984268b05edab2cc555a427c441baa9c252658Chris Lattner// 150f984268b05edab2cc555a427c441baa9c252658Chris Lattner//===----------------------------------------------------------------------===// 160f984268b05edab2cc555a427c441baa9c252658Chris Lattner 170f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "CGObjCRuntime.h" 18dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner#include "CodeGenModule.h" 198f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar#include "CodeGenFunction.h" 2036f893c1efe367f929d92c8b125f964c22ba189eJohn McCall#include "CGCleanup.h" 215dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 22dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner#include "clang/AST/ASTContext.h" 23e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar#include "clang/AST/Decl.h" 24af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar#include "clang/AST/DeclObjC.h" 2519cc4abea06a9b49e0e16a50d335c064cd723572Anders Carlsson#include "clang/AST/RecordLayout.h" 2616f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/AST/StmtObjC.h" 279f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall#include "clang/Basic/SourceManager.h" 289f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall#include "clang/Basic/FileManager.h" 295dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 305dc0867af17b3bd6f567897433853b2b4767446cChris Lattner#include "llvm/Intrinsics.h" 310f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "llvm/Module.h" 32c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall#include "llvm/LLVMContext.h" 330f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "llvm/ADT/SmallVector.h" 3420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov#include "llvm/ADT/StringMap.h" 3580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall#include "llvm/Support/CallSite.h" 367ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar#include "llvm/Support/Compiler.h" 377ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar#include "llvm/Target/TargetData.h" 385dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 399f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall#include <stdarg.h> 40e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 41e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 42dce1406f1c1f572cfd61c494546572d63461c741Chris Lattnerusing namespace clang; 4346f45b9bec4a265ad8400a538e5ec3a5683617f1Daniel Dunbarusing namespace CodeGen; 4420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovusing llvm::dyn_cast; 4520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 460f984268b05edab2cc555a427c441baa9c252658Chris Lattner 470f984268b05edab2cc555a427c441baa9c252658Chris Lattnernamespace { 4881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// Class that lazily initialises the runtime function. Avoids inserting the 4981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// types and the function declaration into a module if they're not used, and 5081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// avoids constructing the type more than once if it's used more than once. 519f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass LazyRuntimeFunction { 529f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CodeGenModule *CGM; 539f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::vector<const llvm::Type*> ArgTys; 549f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const char *FunctionName; 55789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall llvm::Constant *Function; 569f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall public: 5781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Constructor leaves this class uninitialized, because it is intended to 5881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// be used as a field in another class and not all of the types that are 5981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used as arguments will necessarily be available at construction time. 609f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction() : CGM(0), FunctionName(0), Function(0) {} 619f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 6281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Initialises the lazy function with the name, return type, and the types 6381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// of the arguments. 649f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall END_WITH_NULL 659f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall void init(CodeGenModule *Mod, const char *name, 669f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const llvm::Type *RetTy, ...) { 679f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CGM =Mod; 689f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall FunctionName = name; 699f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Function = 0; 709735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall ArgTys.clear(); 719f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall va_list Args; 729f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall va_start(Args, RetTy); 739f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall while (const llvm::Type *ArgTy = va_arg(Args, const llvm::Type*)) 749f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.push_back(ArgTy); 759f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall va_end(Args); 769f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // Push the return type on at the end so we can pop it off easily 779f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.push_back(RetTy); 789f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 7981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Overloaded cast operator, allows the class to be implicitly cast to an 8081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM constant. 81789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall operator llvm::Constant*() { 829f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (!Function) { 839735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall if (0 == FunctionName) return 0; 849735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // We put the return type on the end of the vector, so pop it back off 859f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const llvm::Type *RetTy = ArgTys.back(); 869f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.pop_back(); 879f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::FunctionType *FTy = llvm::FunctionType::get(RetTy, ArgTys, false); 889f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Function = 89789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall cast<llvm::Constant>(CGM->CreateRuntimeFunction(FTy, FunctionName)); 909735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // We won't need to use the types again, so we may as well clean up the 919735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // vector now 929f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.resize(0); 939f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 949f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return Function; 959f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 96789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall operator llvm::Function*() { 975f0bcc4c3f4a75375a3571e71bffebf603f4ca67David Chisnall return cast<llvm::Function>((llvm::Constant*)*this); 98789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall } 995f0bcc4c3f4a75375a3571e71bffebf603f4ca67David Chisnall 1009f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall}; 1019f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 1029f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 10381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// GNU Objective-C runtime code generation. This class implements the parts of 10481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// Objective-C support that are specific to the GNU family of runtimes (GCC and 10581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// GNUstep). 1069f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass CGObjCGNU : public CGObjCRuntime { 107c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnallprotected: 10881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The module that is using this class 1099f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CodeGenModule &CGM; 11081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The LLVM module into which output is inserted 1110f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Module &TheModule; 11281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// strut objc_super. Used for sending messages to super. This structure 11381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// contains the receiver (object) and the expected class. 114c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall const llvm::StructType *ObjCSuperTy; 11581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// struct objc_super*. The type of the argument to the superclass message 11681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// lookup functions. 117c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall const llvm::PointerType *PtrToObjCSuperTy; 11881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for selectors. Opaque pointer (i8*) unless a header declaring 11981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// SEL is included in a header somewhere, in which case it will be whatever 12081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// type is declared in that header, most likely {i8*, i8*}. 121e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *SelectorTy; 12281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM i8 type. Cached here to avoid repeatedly getting it in all of the 12381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// places where it's used 124d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const llvm::IntegerType *Int8Ty; 12581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Pointer to i8 - LLVM type of char*, for all of the places where the 12681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// runtime needs to deal with C strings. 127e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *PtrToInt8Ty; 12881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Instance Method Pointer type. This is a pointer to a function that takes, 12981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// at a minimum, an object and a selector, and is the generic type for 13081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Objective-C methods. Due to differences between variadic / non-variadic 13181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// calling conventions, it must always be cast to the correct type before 13281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// actually being used. 133c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall const llvm::PointerType *IMPTy; 13481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Type of an untyped Objective-C object. Clang treats id as a built-in type 13581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// when compiling Objective-C code, so this may be an opaque pointer (i8*), 13681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// but if the runtime header declaring it is included then it may be a 13781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// pointer to a structure. 138e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *IdTy; 13981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Pointer to a pointer to an Objective-C object. Used in the new ABI 14081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// message lookup function and some GC-related functions. 141ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall const llvm::PointerType *PtrToIdTy; 14281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The clang type of id. Used when using the clang CGCall infrastructure to 14381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// call Objective-C methods. 144ead608af31b6c9abeae1ca6d0b75094dac4641c0John McCall CanQualType ASTIdTy; 14581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C int type. 146e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::IntegerType *IntTy; 14781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for an opaque pointer. This is identical to PtrToInt8Ty, but is 14881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used in the code to document the difference between i8* meaning a pointer 14981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// to a C string and i8* meaning a pointer to some opaque type. 150e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *PtrTy; 15181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C long type. The runtime uses this in a lot of places where 15281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// it should be using intptr_t, but we can't fix this without breaking 15381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// compatibility with GCC... 154e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::IntegerType *LongTy; 15581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C size_t. Used in various runtime data structures. 1568fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall const llvm::IntegerType *SizeTy; 15781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C ptrdiff_t. Mainly used in property accessor functions. 1588fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall const llvm::IntegerType *PtrDiffTy; 15981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C int*. Used for GCC-ABI-compatible non-fragile instance 16081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// variables. 161e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *PtrToIntTy; 16281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for Objective-C BOOL type. 1638fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall const llvm::Type *BoolTy; 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()); 1749735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros, 2); 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) { 1859735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *value = llvm::ConstantArray::get(VMContext, Str, true); 1869735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall ConstStr = new llvm::GlobalVariable(TheModule, value->getType(), true, 1879735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::GlobalValue::LinkOnceODRLinkage, value, prefix + Str); 1889735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 1899735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros, 2); 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. 194c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::GlobalVariable *MakeGlobal(const llvm::StructType *Ty, 1959735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall std::vector<llvm::Constant*> &V, 1969735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::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. 206c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::GlobalVariable *MakeGlobal(const llvm::ArrayType *Ty, 2079735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall std::vector<llvm::Constant*> &V, 2089735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::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. 217c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::GlobalVariable *MakeGlobalArray(const llvm::Type *Ty, 2189735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall std::vector<llvm::Constant*> &V, 2199735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::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 } 22581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Ensures that the value has the required type, by inserting a bitcast if 22681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// required. This function lets us avoid inserting bitcasts that are 22781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// redundant. 228c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value* EnforceType(CGBuilderTy B, llvm::Value *V, const llvm::Type *Ty){ 229c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall if (V->getType() == Ty) return V; 230c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return B.CreateBitCast(V, Ty); 231c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 232c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Some zeros used for GEPs in lots of places. 233c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Constant *Zeros[2]; 23481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Null pointer value. Mainly used as a terminator in various arrays. 235c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Constant *NULLPtr; 23681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM context. 237c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::LLVMContext &VMContext; 238c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnallprivate: 23981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Placeholder for the class. Lots of things refer to the class before we've 24081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// actually emitted it. We use this alias as a placeholder, and then replace 24181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// it with a pointer to the class structure before finally emitting the 24281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// module. 2435efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *ClassPtrAlias; 24481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Placeholder for the metaclass. Lots of things refer to the class before 24581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// we've / actually emitted it. We use this alias as a placeholder, and then 24681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// replace / it with a pointer to the metaclass structure before finally 24781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// emitting the / module. 2485efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *MetaClassPtrAlias; 24981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the classes that have been generated for this compilation units. 25020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Classes; 25181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the categories that have been generated for this compilation units. 25220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Categories; 25381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the Objective-C constant strings that have been generated for this 25481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// compilation units. 25520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> ConstantStrings; 25681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Map from string values to Objective-C constant strings in the output. 25781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Used to prevent emitting Objective-C strings more than once. This should 25881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// not be required at all - CodeGenModule should manage this list. 25948272a078e54d501cb05edd797c54b8e82ceb520David Chisnall llvm::StringMap<llvm::Constant*> ObjCStrings; 26081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the protocols that have been declared. 26120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StringMap<llvm::Constant*> ExistingProtocols; 26281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// For each variant of a selector, we store the type encoding and a 26381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// placeholder value. For an untyped selector, the type will be the empty 26481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// string. Selector references are all done via the module's selector table, 26581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// so we create an alias as a placeholder and then replace it with the real 26681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// value later. 2679f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall typedef std::pair<std::string, llvm::GlobalAlias*> TypedSelector; 26881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Type of the selector map. This is roughly equivalent to the structure 26981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used in the GNUstep runtime, which maintains a list of all of the valid 27081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// types for a selector in a table. 2719f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall typedef llvm::DenseMap<Selector, llvm::SmallVector<TypedSelector, 2> > 2729f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorMap; 27381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// A map from selectors to selector types. This allows us to emit all 27481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// selectors of the same name and type together. 2759f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorMap SelectorTable; 2769f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 27781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Selectors related to memory management. When compiling in GC mode, we 27881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// omit these. 279ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Selector RetainSel, ReleaseSel, AutoreleaseSel; 28081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Runtime functions used for memory management in GC mode. Note that clang 28181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// supports code generation for calling these functions, but neither GNU 28281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// runtime actually supports this API properly yet. 2839f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction IvarAssignFn, StrongCastAssignFn, MemMoveFn, WeakReadFn, 2849f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall WeakAssignFn, GlobalAssignFn; 2859f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 2869735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnallprotected: 28781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function used for throwing Objective-C exceptions. 2889f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction ExceptionThrowFn; 28981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function used for rethrowing exceptions, used at the end of @finally or 29081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// @synchronize blocks. 2919735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall LazyRuntimeFunction ExceptionReThrowFn; 29281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function called when entering a catch function. This is required for 29381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// differentiating Objective-C exceptions and foreign exceptions. 2949735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall LazyRuntimeFunction EnterCatchFn; 29581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function called when exiting from a catch block. Used to do exception 29681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// cleanup. 2979735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall LazyRuntimeFunction ExitCatchFn; 29881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function called when entering an @synchronize block. Acquires the lock. 2999f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SyncEnterFn; 30081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function called when exiting an @synchronize block. Releases the lock. 3019f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SyncExitFn; 3029f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 3039735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnallprivate: 3049735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall 30581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function called if fast enumeration detects that the collection is 30681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// modified during the update. 3079f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction EnumerationMutationFn; 30881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function for implementing synthesized property getters that return an 30981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// object. 3109f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction GetPropertyFn; 31181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function for implementing synthesized property setters that return an 31281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// object. 3139f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SetPropertyFn; 31481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function used for non-object declared property getters. 3159f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction GetStructPropertyFn; 31681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function used for non-object declared property setters. 3179f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SetStructPropertyFn; 3189f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 31981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The version of the runtime that this class targets. Must match the 32081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// version in the runtime. 321a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall int RuntimeVersion; 32281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The version of the protocol class. Used to differentiate between ObjC1 32381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// and ObjC2 protocols. Objective-C 1 protocols can not contain optional 32481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// components and can not contain declared properties. We always emit 32581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Objective-C 2 property structures, but we have to pretend that they're 32681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Objective-C 1 property structures when targeting the GCC runtime or it 32781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// will abort. 3289f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const int ProtocolVersion; 32920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovprivate: 33081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates an instance variable list structure. This is a structure 33181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// containing a size and an array of structures containing instance variable 33281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// metadata. This is used purely for introspection in the fragile ABI. In 33381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// the non-fragile ABI, it's used for instance variable fixup. 33420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateIvarList( 33520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 33620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 33720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets); 33881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a method list structure. This is a structure containing a size 33981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// and an array of structures containing method metadata. 34081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// 34181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// This structure is used by both classes and categories, and contains a next 34281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// pointer allowing them to be chained together in a linked list. 3439f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *GenerateMethodList(const llvm::StringRef &ClassName, 3449f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const llvm::StringRef &CategoryName, 3451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::SmallVectorImpl<Selector> &MethodSels, 3461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes, 34720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList); 34881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Emits an empty protocol. This is used for @protocol() where no protocol 34981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// is found. The runtime will (hopefully) fix up the pointer to refer to the 35081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// real protocol. 351f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *GenerateEmptyProtocol(const std::string &ProtocolName); 35281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a list of property metadata structures. This follows the same 35381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// pattern as method and instance variable metadata lists. 354d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *GeneratePropertyList(const ObjCImplementationDecl *OID, 355d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVectorImpl<Selector> &InstanceMethodSels, 356d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVectorImpl<llvm::Constant*> &InstanceMethodTypes); 35781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a list of referenced protocols. Classes, categories, and 35881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// protocols all use this structure. 35920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolList( 36020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols); 36181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// To ensure that all protocols are seen by the runtime, we add a category on 36281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// a class defined in the runtime, declaring no methods, but adopting the 36381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// protocols. This is a horribly ugly hack, but it allows us to collect all 36481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// of the protocols without changing the ABI. 365d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian void GenerateProtocolHolderCategory(void); 36681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a class structure. 36720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateClassStructure( 36820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 36920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 37020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 371d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 37220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 37320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 37420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 37520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 376d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Protocols, 377d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *IvarOffsets, 3788c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall llvm::Constant *Properties, 3798c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall bool isMeta=false); 38081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a method list. This is used by protocols to define the required 38181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// and optional methods. 38220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolMethodList( 38320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames, 38420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes); 38581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Returns a selector with the specified type encoding. An empty string is 38681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used to return an untyped selector (with the types field set to NULL). 3879f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Value *GetSelector(CGBuilderTy &Builder, Selector Sel, 3889f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const std::string &TypeEncoding, bool lval); 38981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Returns the variable used to store the offset of an instance variable. 3909cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::GlobalVariable *ObjCIvarOffsetVariable(const ObjCInterfaceDecl *ID, 3919cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar); 39281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Emits a reference to a class. This allows the linker to object if there 39381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// is no class of the matching name. 3942a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner void EmitClassRef(const std::string &className); 395c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnallprotected: 39681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Looks up the method for sending a message to the specified object. This 39781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// mechanism differs between the GCC and GNU runtimes, so this method must be 39881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// overridden in subclasses. 399c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMP(CodeGenFunction &CGF, 400c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *&Receiver, 401c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd, 402c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDNode *node) = 0; 40381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Looks up the method for sending a message to a superclass. This mechanism 40481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// differs between the GCC and GNU runtimes, so this method must be 40581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// overridden in subclasses. 406c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMPSuper(CodeGenFunction &CGF, 407c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ObjCSuper, 408c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd) = 0; 4090f984268b05edab2cc555a427c441baa9c252658Chris Lattnerpublic: 4109f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CGObjCGNU(CodeGenModule &cgm, unsigned runtimeABIVersion, 4119f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall unsigned protocolClassVersion); 4129f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 4130d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall virtual llvm::Constant *GenerateConstantString(const StringLiteral *); 4149f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 4159f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual RValue 4169f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GenerateMessageSend(CodeGenFunction &CGF, 417ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 4187f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 4197f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 420f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 421df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 422c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall const ObjCInterfaceDecl *Class, 423df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method); 4249f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual RValue 4259f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GenerateMessageSendSuper(CodeGenFunction &CGF, 426ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 4277f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 4287f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 429f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 4307ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 431f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 43219cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 433d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const CallArgList &CallArgs, 434d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const ObjCMethodDecl *Method); 43545d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GetClass(CGBuilderTy &Builder, 436ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar const ObjCInterfaceDecl *OID); 43703b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanian virtual llvm::Value *GetSelector(CGBuilderTy &Builder, Selector Sel, 43803b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanian bool lval = false); 4396d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar virtual llvm::Value *GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 4406d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar *Method); 4415a180397870944548aaadeaebf58e415885b9489John McCall virtual llvm::Constant *GetEHType(QualType T); 4421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump virtual llvm::Function *GenerateMethod(const ObjCMethodDecl *OMD, 444679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian const ObjCContainerDecl *CD); 4457ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateCategory(const ObjCCategoryImplDecl *CMD); 4467ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateClass(const ObjCImplementationDecl *ClassDecl); 44745d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GenerateProtocolRef(CGBuilderTy &Builder, 448af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD); 449af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar virtual void GenerateProtocol(const ObjCProtocolDecl *PD); 45020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual llvm::Function *ModuleInitFunction(); 451789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetPropertyGetFunction(); 452789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetPropertySetFunction(); 453789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetSetStructFunction(); 454789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetGetStructFunction(); 455309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar virtual llvm::Constant *EnumerationMutationFunction(); 4561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4579f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitTryStmt(CodeGenFunction &CGF, 458f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtTryStmt &S); 4599f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitSynchronizedStmt(CodeGenFunction &CGF, 460f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtSynchronizedStmt &S); 4619f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitThrowStmt(CodeGenFunction &CGF, 46264d5d6c5903157c521af496479d06dc26032d718Anders Carlsson const ObjCAtThrowStmt &S); 4639f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual llvm::Value * EmitObjCWeakRead(CodeGenFunction &CGF, 4646dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian llvm::Value *AddrWeakObj); 4659f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCWeakAssign(CodeGenFunction &CGF, 4663e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian llvm::Value *src, llvm::Value *dst); 4679f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCGlobalAssign(CodeGenFunction &CGF, 468021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian llvm::Value *src, llvm::Value *dest, 469021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian bool threadlocal=false); 4709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCIvarAssign(CodeGenFunction &CGF, 4716c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *src, llvm::Value *dest, 4726c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *ivarOffset); 4739f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCStrongCastAssign(CodeGenFunction &CGF, 47458626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dest); 4759f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitGCMemmoveCollectable(CodeGenFunction &CGF, 4761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *DestPtr, 477082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *SrcPtr, 47855bcace250e1ff366e4482714b344b8cbc8be5f3Fariborz Jahanian llvm::Value *Size); 4799f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual LValue EmitObjCValueForIvar(CodeGenFunction &CGF, 480598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 481598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 482598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 483598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers); 4849f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual llvm::Value *EmitIvarOffset(CodeGenFunction &CGF, 4852a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 486f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar); 4879f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual llvm::Constant *BuildGCBlockLayout(CodeGenModule &CGM, 4886b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall const CGBlockInfo &blockInfo) { 48989ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian return NULLPtr; 49089ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian } 4916f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian 4926f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian virtual llvm::GlobalVariable *GetClassGlobal(const std::string &Name) { 4936f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian return 0; 4946f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian } 4950f984268b05edab2cc555a427c441baa9c252658Chris Lattner}; 49681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// Class representing the legacy GCC Objective-C ABI. This is the default when 49781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// -fobjc-nonfragile-abi is not specified. 49881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// 49981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// The GCC ABI target actually generates code that is approximately compatible 50081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// with the new GNUstep runtime ABI, but refrains from using any features that 50181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// would not work with the GCC runtime. For example, clang always generates 50281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// the extended form of the class structure, and the extra fields are simply 50381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// ignored by GCC libobjc. 5049f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass CGObjCGCC : public CGObjCGNU { 50581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The GCC ABI message lookup function. Returns an IMP pointing to the 50681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// method implementation for this message. 507c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction MsgLookupFn; 50881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The GCC ABI superclass message lookup function. Takes a pointer to a 50981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// structure describing the receiver and the class, and a selector as 51081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// arguments. Returns the IMP for the corresponding method. 511c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction MsgLookupSuperFn; 512c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnallprotected: 513c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMP(CodeGenFunction &CGF, 514c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *&Receiver, 515c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd, 516c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDNode *node) { 517c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 518c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *imp = Builder.CreateCall2(MsgLookupFn, 519c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall EnforceType(Builder, Receiver, IdTy), 520c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall EnforceType(Builder, cmd, SelectorTy)); 521c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall cast<llvm::CallInst>(imp)->setMetadata(msgSendMDKind, node); 522c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return imp; 523c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 524c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMPSuper(CodeGenFunction &CGF, 525c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ObjCSuper, 526c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd) { 527c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 528c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *lookupArgs[] = {EnforceType(Builder, ObjCSuper, 529c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy), cmd}; 530c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return Builder.CreateCall(MsgLookupSuperFn, lookupArgs, lookupArgs+2); 531c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 5329f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall public: 533c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGObjCGCC(CodeGenModule &Mod) : CGObjCGNU(Mod, 8, 2) { 534c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // IMP objc_msg_lookup(id, SEL); 535c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall MsgLookupFn.init(&CGM, "objc_msg_lookup", IMPTy, IdTy, SelectorTy, NULL); 536c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // IMP objc_msg_lookup_super(struct objc_super*, SEL); 537c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall MsgLookupSuperFn.init(&CGM, "objc_msg_lookup_super", IMPTy, 538c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy, SelectorTy, NULL); 539c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 5409f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall}; 54181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// Class used when targeting the new GNUstep runtime ABI. 5429f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass CGObjCGNUstep : public CGObjCGNU { 54381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The slot lookup function. Returns a pointer to a cacheable structure 54481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// that contains (among other things) the IMP. 545c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction SlotLookupFn; 54681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The GNUstep ABI superclass message lookup function. Takes a pointer to 54781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// a structure describing the receiver and the class, and a selector as 54881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// arguments. Returns the slot for the corresponding method. Superclass 54981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// message lookup rarely changes, so this is a good caching opportunity. 550c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction SlotLookupSuperFn; 55181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Type of an slot structure pointer. This is returned by the various 55281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// lookup functions. 553c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Type *SlotTy; 554c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall protected: 555c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMP(CodeGenFunction &CGF, 556c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *&Receiver, 557c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd, 558c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDNode *node) { 559c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 560c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Function *LookupFn = SlotLookupFn; 561c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 562c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Store the receiver on the stack so that we can reload it later 563c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ReceiverPtr = CGF.CreateTempAlloca(Receiver->getType()); 564c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Builder.CreateStore(Receiver, ReceiverPtr); 565c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 566c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *self; 567c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 568c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall if (isa<ObjCMethodDecl>(CGF.CurCodeDecl)) { 569c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall self = CGF.LoadObjCSelf(); 570c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } else { 571c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall self = llvm::ConstantPointerNull::get(IdTy); 572c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 573c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 574c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // The lookup function is guaranteed not to capture the receiver pointer. 575c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LookupFn->setDoesNotCapture(1); 576c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 577c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::CallInst *slot = 578c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Builder.CreateCall3(LookupFn, 579c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall EnforceType(Builder, ReceiverPtr, PtrToIdTy), 580c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall EnforceType(Builder, cmd, SelectorTy), 581c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall EnforceType(Builder, self, IdTy)); 582c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall slot->setOnlyReadsMemory(); 583c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall slot->setMetadata(msgSendMDKind, node); 584c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 585c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Load the imp from the slot 586c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *imp = Builder.CreateLoad(Builder.CreateStructGEP(slot, 4)); 587c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 588c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // The lookup function may have changed the receiver, so make sure we use 589c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // the new one. 590c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Receiver = Builder.CreateLoad(ReceiverPtr, true); 591c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return imp; 592c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 593c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMPSuper(CodeGenFunction &CGF, 594c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ObjCSuper, 595c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd) { 596c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 597c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *lookupArgs[] = {ObjCSuper, cmd}; 598c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 599c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::CallInst *slot = Builder.CreateCall(SlotLookupSuperFn, lookupArgs, 600c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall lookupArgs+2); 601c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall slot->setOnlyReadsMemory(); 602c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 603c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return Builder.CreateLoad(Builder.CreateStructGEP(slot, 4)); 604c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 6059f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall public: 606c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGObjCGNUstep(CodeGenModule &Mod) : CGObjCGNU(Mod, 9, 3) { 607c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::StructType *SlotStructTy = llvm::StructType::get(VMContext, PtrTy, 608c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrTy, PtrTy, IntTy, IMPTy, NULL); 609c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SlotTy = llvm::PointerType::getUnqual(SlotStructTy); 610c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Slot_t objc_msg_lookup_sender(id *receiver, SEL selector, id sender); 611c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SlotLookupFn.init(&CGM, "objc_msg_lookup_sender", SlotTy, PtrToIdTy, 612c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SelectorTy, IdTy, NULL); 613c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Slot_t objc_msg_lookup_super(struct objc_super*, SEL); 614c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SlotLookupSuperFn.init(&CGM, "objc_slot_lookup_super", SlotTy, 615c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy, SelectorTy, NULL); 6169735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // If we're in ObjC++ mode, then we want to make 6179735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall if (CGM.getLangOptions().CPlusPlus) { 6189735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall const llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext); 6199735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // void *__cxa_begin_catch(void *e) 6209735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall EnterCatchFn.init(&CGM, "__cxa_begin_catch", PtrTy, PtrTy, NULL); 6219735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // void __cxa_end_catch(void) 6229735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall EnterCatchFn.init(&CGM, "__cxa_end_catch", VoidTy, NULL); 6239735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // void _Unwind_Resume_or_Rethrow(void*) 624978d415adab4ef423f5aef430ddfdbefc4cfb000David Chisnall ExceptionReThrowFn.init(&CGM, "_Unwind_Resume_or_Rethrow", VoidTy, PtrTy, NULL); 6259735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 626c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 6279f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall}; 6289f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 6290f984268b05edab2cc555a427c441baa9c252658Chris Lattner} // end anonymous namespace 6300f984268b05edab2cc555a427c441baa9c252658Chris Lattner 63120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 6322a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// Emits a reference to a dummy variable which is emitted with each class. 6332a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// This ensures that a linker error will be generated when trying to link 6342a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// together modules where a referenced class is not defined. 635bb1c8600218b3244340331165fc7cba7bf227655Mike Stumpvoid CGObjCGNU::EmitClassRef(const std::string &className) { 6362a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner std::string symbolRef = "__objc_class_ref_" + className; 6372a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // Don't emit two copies of the same symbol 638bb1c8600218b3244340331165fc7cba7bf227655Mike Stump if (TheModule.getGlobalVariable(symbolRef)) 639bb1c8600218b3244340331165fc7cba7bf227655Mike Stump return; 6402a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner std::string symbolName = "__objc_class_name_" + className; 6412a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner llvm::GlobalVariable *ClassSymbol = TheModule.getGlobalVariable(symbolName); 6422a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (!ClassSymbol) { 6431c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson ClassSymbol = new llvm::GlobalVariable(TheModule, LongTy, false, 6441c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::GlobalValue::ExternalLinkage, 0, symbolName); 6452a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 6461c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, ClassSymbol->getType(), true, 647f35271b8677a5f31498b89587b1da42a06dd46fdChris Lattner llvm::GlobalValue::WeakAnyLinkage, ClassSymbol, symbolRef); 6482a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner} 64920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 6509f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallstatic std::string SymbolNameForMethod(const llvm::StringRef &ClassName, 6519f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const llvm::StringRef &CategoryName, const Selector MethodName, 6529f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall bool isClassMethod) { 6539f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string MethodNameColonStripped = MethodName.getAsString(); 654d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall std::replace(MethodNameColonStripped.begin(), MethodNameColonStripped.end(), 655d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall ':', '_'); 6569f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return (llvm::Twine(isClassMethod ? "_c_" : "_i_") + ClassName + "_" + 6579f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CategoryName + "_" + MethodNameColonStripped).str(); 65887935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall} 65920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 6609f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCGNU::CGObjCGNU(CodeGenModule &cgm, unsigned runtimeABIVersion, 6619f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall unsigned protocolClassVersion) 662c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall : CGM(cgm), TheModule(CGM.getModule()), VMContext(cgm.getLLVMContext()), 663c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall ClassPtrAlias(0), MetaClassPtrAlias(0), RuntimeVersion(runtimeABIVersion), 664c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall ProtocolVersion(protocolClassVersion) { 665c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall 666c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall msgSendMDKind = VMContext.getMDKindID("GNUObjCMessageSend"); 667c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall 6689f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CodeGenTypes &Types = CGM.getTypes(); 669e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner IntTy = cast<llvm::IntegerType>( 6709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().IntTy)); 671e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner LongTy = cast<llvm::IntegerType>( 6729f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().LongTy)); 6738fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall SizeTy = cast<llvm::IntegerType>( 6749f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().getSizeType())); 6758fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall PtrDiffTy = cast<llvm::IntegerType>( 6769f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().getPointerDiffType())); 6778fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall BoolTy = CGM.getTypes().ConvertType(CGM.getContext().BoolTy); 6781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 679d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Int8Ty = llvm::Type::getInt8Ty(VMContext); 680d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // C string type. Used in lots of places. 681d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty = llvm::PointerType::getUnqual(Int8Ty); 682d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 6834a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Zeros[0] = llvm::ConstantInt::get(LongTy, 0); 68420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros[1] = Zeros[0]; 685d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NULLPtr = llvm::ConstantPointerNull::get(PtrToInt8Ty); 686391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Get the selector Type. 6870d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall QualType selTy = CGM.getContext().getObjCSelType(); 6880d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall if (QualType() == selTy) { 6890d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall SelectorTy = PtrToInt8Ty; 6900d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } else { 6910d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall SelectorTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(selTy)); 6920d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } 693e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 69496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson PtrToIntTy = llvm::PointerType::getUnqual(IntTy); 695391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrTy = PtrToInt8Ty; 6961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 697391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Object type 6987bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall QualType UnqualIdTy = CGM.getContext().getObjCIdType(); 6997bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall ASTIdTy = CanQualType(); 7007bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall if (UnqualIdTy != QualType()) { 7017bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall ASTIdTy = CGM.getContext().getCanonicalType(UnqualIdTy); 7020d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall IdTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(ASTIdTy)); 7037bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall } else { 7047bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall IdTy = PtrToInt8Ty; 7050d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } 706ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall PtrToIdTy = llvm::PointerType::getUnqual(IdTy); 7071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 708c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall ObjCSuperTy = llvm::StructType::get(VMContext, IdTy, IdTy, NULL); 709c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy = llvm::PointerType::getUnqual(ObjCSuperTy); 710c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 7119f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext); 7129f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 7139f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_exception_throw(id); 7149f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ExceptionThrowFn.init(&CGM, "objc_exception_throw", VoidTy, IdTy, NULL); 7159735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall ExceptionReThrowFn.init(&CGM, "objc_exception_throw", VoidTy, IdTy, NULL); 7169f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // int objc_sync_enter(id); 7179f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SyncEnterFn.init(&CGM, "objc_sync_enter", IntTy, IdTy, NULL); 7189f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // int objc_sync_exit(id); 7199f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SyncExitFn.init(&CGM, "objc_sync_exit", IntTy, IdTy, NULL); 7209f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 7219f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_enumerationMutation (id) 7229f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall EnumerationMutationFn.init(&CGM, "objc_enumerationMutation", VoidTy, 7239f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall IdTy, NULL); 7249f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 7259f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // id objc_getProperty(id, SEL, ptrdiff_t, BOOL) 7269f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GetPropertyFn.init(&CGM, "objc_getProperty", IdTy, IdTy, SelectorTy, 7279f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, BoolTy, NULL); 7289f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_setProperty(id, SEL, ptrdiff_t, id, BOOL, BOOL) 7299f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SetPropertyFn.init(&CGM, "objc_setProperty", VoidTy, IdTy, SelectorTy, 7309f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, IdTy, BoolTy, BoolTy, NULL); 7319f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_setPropertyStruct(void*, void*, ptrdiff_t, BOOL, BOOL) 7329f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GetStructPropertyFn.init(&CGM, "objc_getPropertyStruct", VoidTy, PtrTy, PtrTy, 7339f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, BoolTy, BoolTy, NULL); 7349f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_setPropertyStruct(void*, void*, ptrdiff_t, BOOL, BOOL) 7359f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SetStructPropertyFn.init(&CGM, "objc_setPropertyStruct", VoidTy, PtrTy, PtrTy, 7369f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, BoolTy, BoolTy, NULL); 7379f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 738391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // IMP type 73995d318c4c10437db40ca6e15fdf32e04012da58eBenjamin Kramer const llvm::Type *IMPArgs[] = { IdTy, SelectorTy }; 740c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall IMPTy = llvm::PointerType::getUnqual(llvm::FunctionType::get(IdTy, IMPArgs, 741c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall true)); 742ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 7439735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // Don't bother initialising the GC stuff unless we're compiling in GC mode 744ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (CGM.getLangOptions().getGCMode() != LangOptions::NonGC) { 745a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall // This is a bit of an hack. We should sort this out by having a proper 746a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall // CGObjCGNUstep subclass for GC, but we may want to really support the old 747a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall // ABI and GC added in ObjectiveC2.framework, so we fudge it a bit for now 748a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall RuntimeVersion = 10; 749ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // Get selectors needed in GC mode 750ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall RetainSel = GetNullarySelector("retain", CGM.getContext()); 751ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall ReleaseSel = GetNullarySelector("release", CGM.getContext()); 752ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall AutoreleaseSel = GetNullarySelector("autorelease", CGM.getContext()); 753ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 754ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // Get functions needed in GC mode 755ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 756ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_ivar(id, id, ptrdiff_t); 7579f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall IvarAssignFn.init(&CGM, "objc_assign_ivar", IdTy, IdTy, IdTy, PtrDiffTy, 7589f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall NULL); 759ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_strongCast (id, id*) 7609f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall StrongCastAssignFn.init(&CGM, "objc_assign_strongCast", IdTy, IdTy, 7619f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrToIdTy, NULL); 762ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_global(id, id*); 7639f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GlobalAssignFn.init(&CGM, "objc_assign_global", IdTy, IdTy, PtrToIdTy, 7649f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall NULL); 765ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_weak(id, id*); 7669f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall WeakAssignFn.init(&CGM, "objc_assign_weak", IdTy, IdTy, PtrToIdTy, NULL); 767ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_read_weak(id*); 7689f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall WeakReadFn.init(&CGM, "objc_read_weak", IdTy, PtrToIdTy, NULL); 769ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // void *objc_memmove_collectable(void*, void *, size_t); 7709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall MemMoveFn.init(&CGM, "objc_memmove_collectable", PtrTy, PtrTy, PtrTy, 7719f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SizeTy, NULL); 772ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 77320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 774bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 77520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// This has to perform the lookup every time, since posing and related 77620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// techniques can modify the name -> class mapping. 77745d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbarllvm::Value *CGObjCGNU::GetClass(CGBuilderTy &Builder, 778ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar const ObjCInterfaceDecl *OID) { 779d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner llvm::Value *ClassName = CGM.GetAddrOfConstantCString(OID->getNameAsString()); 78041d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // With the incompatible ABI, this will need to be replaced with a direct 78141d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // reference to the class symbol. For the compatible nonfragile ABI we are 78241d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // still performing this lookup at run time but emitting the symbol for the 78341d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // class externally so that we can make the switch later. 7842a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner EmitClassRef(OID->getNameAsString()); 785ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar ClassName = Builder.CreateStructGEP(ClassName, 0); 786ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar 78720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassLookupFn = 78895d318c4c10437db40ca6e15fdf32e04012da58eBenjamin Kramer CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, PtrToInt8Ty, true), 78926c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_lookup_class"); 79020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return Builder.CreateCall(ClassLookupFn, ClassName); 791391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 792391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 79303b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanianllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, Selector Sel, 7949f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const std::string &TypeEncoding, bool lval) { 7959f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 7969f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::SmallVector<TypedSelector, 2> &Types = SelectorTable[Sel]; 7979f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::GlobalAlias *SelValue = 0; 7989f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 7999f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 8009f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall for (llvm::SmallVectorImpl<TypedSelector>::iterator i = Types.begin(), 8019f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall e = Types.end() ; i!=e ; i++) { 8029f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (i->first == TypeEncoding) { 8039f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelValue = i->second; 8049f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall break; 8059f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 8069f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 8079f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (0 == SelValue) { 808c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SelValue = new llvm::GlobalAlias(SelectorTy, 8099f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::GlobalValue::PrivateLinkage, 8109f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ".objc_selector_"+Sel.getAsString(), NULL, 8119f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall &TheModule); 8129f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.push_back(TypedSelector(TypeEncoding, SelValue)); 8139f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 8149f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 815c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall if (lval) { 816c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *tmp = Builder.CreateAlloca(SelValue->getType()); 817c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Builder.CreateStore(SelValue, tmp); 818c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return tmp; 819c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 820c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return SelValue; 8219f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall} 8229f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 8239f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, Selector Sel, 8249f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall bool lval) { 8259f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return GetSelector(Builder, Sel, std::string(), lval); 826df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian} 827df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 8286d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbarllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 829df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian *Method) { 830df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian std::string SelTypes; 831df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian CGM.getContext().getObjCEncodingForMethodDecl(Method, SelTypes); 8329f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return GetSelector(Builder, Method->getSelector(), SelTypes, false); 8338e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner} 8348e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 8355a180397870944548aaadeaebf58e415885b9489John McCallllvm::Constant *CGObjCGNU::GetEHType(QualType T) { 8369735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall if (!CGM.getLangOptions().CPlusPlus) { 8379735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall if (T->isObjCIdType() 8389735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall || T->isObjCQualifiedIdType()) { 8399735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // With the old ABI, there was only one kind of catchall, which broke 8409735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // foreign exceptions. With the new ABI, we use __objc_id_typeinfo as 8419735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // a pointer indicating object catchalls, and NULL to indicate real 8429735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // catchalls 8439735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall if (CGM.getLangOptions().ObjCNonFragileABI) { 8449735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return MakeConstantString("@id"); 8459735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } else { 8469735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return 0; 8479735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 8489735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 8499735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall 8509735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // All other types should be Objective-C interface pointer types. 8519735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall const ObjCObjectPointerType *OPT = 8529735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall T->getAs<ObjCObjectPointerType>(); 8539735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall assert(OPT && "Invalid @catch type."); 8549735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall const ObjCInterfaceDecl *IDecl = 8559735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall OPT->getObjectType()->getInterface(); 8569735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall assert(IDecl && "Invalid @catch type."); 8579735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return MakeConstantString(IDecl->getIdentifier()->getName()); 8589735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 85980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // For Objective-C++, we want to provide the ability to catch both C++ and 86080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // Objective-C objects in the same function. 86180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 86280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // There's a particular fixed type info for 'id'. 86380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall if (T->isObjCIdType() || 86480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall T->isObjCQualifiedIdType()) { 86580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *IDEHType = 86680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall CGM.getModule().getGlobalVariable("__objc_id_type_info"); 86780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall if (!IDEHType) 86880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall IDEHType = 86980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall new llvm::GlobalVariable(CGM.getModule(), PtrToInt8Ty, 87080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall false, 87180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::GlobalValue::ExternalLinkage, 87280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 0, "__objc_id_type_info"); 87380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall return llvm::ConstantExpr::getBitCast(IDEHType, PtrToInt8Ty); 87480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall } 87580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 87680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall const ObjCObjectPointerType *PT = 87780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall T->getAs<ObjCObjectPointerType>(); 87880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall assert(PT && "Invalid @catch type."); 87980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall const ObjCInterfaceType *IT = PT->getInterfaceType(); 88080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall assert(IT && "Invalid @catch type."); 88180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall std::string className = IT->getDecl()->getIdentifier()->getName(); 88280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 88380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall std::string typeinfoName = "__objc_eh_typeinfo_" + className; 88480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 88580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // Return the existing typeinfo if it exists 88680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *typeinfo = TheModule.getGlobalVariable(typeinfoName); 88780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall if (typeinfo) return typeinfo; 88880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 88980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // Otherwise create it. 89080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 89180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // vtable for gnustep::libobjc::__objc_class_type_info 89280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // It's quite ugly hard-coding this. Ideally we'd generate it using the host 89380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // platform's name mangling. 89480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall const char *vtableName = "_ZTVN7gnustep7libobjc22__objc_class_type_infoE"; 89580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *Vtable = TheModule.getGlobalVariable(vtableName); 89680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall if (!Vtable) { 89780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall Vtable = new llvm::GlobalVariable(TheModule, PtrToInt8Ty, true, 89880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::GlobalValue::ExternalLinkage, 0, vtableName); 89980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall } 90080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *Two = llvm::ConstantInt::get(IntTy, 2); 90180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall Vtable = llvm::ConstantExpr::getGetElementPtr(Vtable, &Two, 1); 90280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall Vtable = llvm::ConstantExpr::getBitCast(Vtable, PtrToInt8Ty); 90380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 90480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *typeName = 90580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall ExportUniqueString(className, "__objc_eh_typename_"); 90680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 90780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall std::vector<llvm::Constant*> fields; 90880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall fields.push_back(Vtable); 90980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall fields.push_back(typeName); 91080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *TI = 91180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall MakeGlobal(llvm::StructType::get(VMContext, PtrToInt8Ty, PtrToInt8Ty, 91280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall NULL), fields, "__objc_eh_typeinfo_" + className, 91380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::GlobalValue::LinkOnceODRLinkage); 91480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall return llvm::ConstantExpr::getBitCast(TI, PtrToInt8Ty); 9155a180397870944548aaadeaebf58e415885b9489John McCall} 9165a180397870944548aaadeaebf58e415885b9489John McCall 91720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate an NSConstantString object. 9180d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnallllvm::Constant *CGObjCGNU::GenerateConstantString(const StringLiteral *SL) { 91948272a078e54d501cb05edd797c54b8e82ceb520David Chisnall 9202f4eaef37476ae6891ede8ba215d0f6fd093629bBenjamin Kramer std::string Str = SL->getString().str(); 9210d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall 92248272a078e54d501cb05edd797c54b8e82ceb520David Chisnall // Look for an existing one 92348272a078e54d501cb05edd797c54b8e82ceb520David Chisnall llvm::StringMap<llvm::Constant*>::iterator old = ObjCStrings.find(Str); 92448272a078e54d501cb05edd797c54b8e82ceb520David Chisnall if (old != ObjCStrings.end()) 92548272a078e54d501cb05edd797c54b8e82ceb520David Chisnall return old->getValue(); 92648272a078e54d501cb05edd797c54b8e82ceb520David Chisnall 92720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 92820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars.push_back(NULLPtr); 92913fd7e5111032f54b538dd66d035b0ccc1f82467Chris Lattner Ivars.push_back(MakeConstantString(Str)); 9304a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Ivars.push_back(llvm::ConstantInt::get(IntTy, Str.size())); 93120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ObjCStr = MakeGlobal( 93247a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType::get(VMContext, PtrToInt8Ty, PtrToInt8Ty, IntTy, NULL), 93320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars, ".objc_str"); 93448272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ObjCStr = llvm::ConstantExpr::getBitCast(ObjCStr, PtrToInt8Ty); 93548272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ObjCStrings[Str] = ObjCStr; 93648272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ConstantStrings.push_back(ObjCStr); 93720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return ObjCStr; 93820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 93920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 94020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///Generates a message send where the super is the receiver. This is a message 94120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///send to self with special delivery semantics indicating which class's method 94220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///should be called. 9439f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallRValue 9449f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCGNU::GenerateMessageSendSuper(CodeGenFunction &CGF, 945ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 9467f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 9477f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 948f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 9497ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 950f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 95119cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 952d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const CallArgList &CallArgs, 953d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const ObjCMethodDecl *Method) { 9540bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGBuilderTy &Builder = CGF.Builder; 955e6a11a62d1d66d10a87d81ed697348d66d59adf7David Chisnall if (CGM.getLangOptions().getGCMode() == LangOptions::GCOnly) { 956ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == RetainSel || Sel == AutoreleaseSel) { 9570bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall return RValue::get(EnforceType(Builder, Receiver, 9580bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGM.getTypes().ConvertType(ResultType))); 959ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 960ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == ReleaseSel) { 961ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return RValue::get(0); 962ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 963ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 964db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 965db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::Value *cmd = GetSelector(Builder, Sel); 966db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 967b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 968b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CallArgList ActualArgs; 969b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 97004c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(EnforceType(Builder, Receiver, IdTy)), ASTIdTy); 97104c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(cmd), CGF.getContext().getObjCSelType()); 972b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.insert(ActualArgs.end(), CallArgs.begin(), CallArgs.end()); 973b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 974b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CodeGenTypes &Types = CGM.getTypes(); 97504a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall const CGFunctionInfo &FnInfo = Types.getFunctionInfo(ResultType, ActualArgs, 976264ba48dc98f3f843935a485d5b086f7e0fdc4f1Rafael Espindola FunctionType::ExtInfo()); 977b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 9785efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::Value *ReceiverClass = 0; 97948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (isCategoryImpl) { 98048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::Constant *classLookupFunction = 0; 98148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 98296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 98395d318c4c10437db40ca6e15fdf32e04012da58eBenjamin Kramer IdTy, PtrTy, true), "objc_get_meta_class"); 98448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 98596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 98695d318c4c10437db40ca6e15fdf32e04012da58eBenjamin Kramer IdTy, PtrTy, true), "objc_get_class"); 9875efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 988db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateCall(classLookupFunction, 98948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MakeConstantString(Class->getNameAsString())); 9905efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } else { 99148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // Set up global aliases for the metaclass or class pointer if they do not 99248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // already exist. These will are forward-references which will be set to 993bb1c8600218b3244340331165fc7cba7bf227655Mike Stump // pointers to the class and metaclass structure created for the runtime 994bb1c8600218b3244340331165fc7cba7bf227655Mike Stump // load function. To send a message to super, we look up the value of the 99548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // super_class pointer from either the class or metaclass structure. 99648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 99748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!MetaClassPtrAlias) { 99848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MetaClassPtrAlias = new llvm::GlobalAlias(IdTy, 99948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_metaclass_ref" + 100048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 100148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 100248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = MetaClassPtrAlias; 100348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 100448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!ClassPtrAlias) { 100548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ClassPtrAlias = new llvm::GlobalAlias(IdTy, 100648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_class_ref" + 100748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 100848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 100948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = ClassPtrAlias; 10105efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 101171238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 10125efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Cast the pointer to a simplified version of the class structure 1013db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateBitCast(ReceiverClass, 101496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual( 101547a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType::get(VMContext, IdTy, IdTy, NULL))); 10165efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Get the superclass pointer 1017db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateStructGEP(ReceiverClass, 1); 10185efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Load the superclass pointer 1019db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateLoad(ReceiverClass); 102020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Construct the structure used to look up the IMP 102147a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCSuperTy = llvm::StructType::get(VMContext, 102247a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson Receiver->getType(), IdTy, NULL); 1023db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::Value *ObjCSuper = Builder.CreateAlloca(ObjCSuperTy); 1024b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1025db831948f32217ece8410099f9982ef900c3b3c3David Chisnall Builder.CreateStore(Receiver, Builder.CreateStructGEP(ObjCSuper, 0)); 1026db831948f32217ece8410099f9982ef900c3b3c3David Chisnall Builder.CreateStore(ReceiverClass, Builder.CreateStructGEP(ObjCSuper, 1)); 102720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1028c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall ObjCSuper = EnforceType(Builder, ObjCSuper, PtrToObjCSuperTy); 1029c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall const llvm::FunctionType *impType = 1030c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Types.GetFunctionType(FnInfo, Method ? Method->isVariadic() : false); 1031db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 1032c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Get the IMP 1033c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *imp = LookupIMPSuper(CGF, ObjCSuper, cmd); 1034c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall imp = EnforceType(Builder, imp, llvm::PointerType::getUnqual(impType)); 103520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1036dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::Value *impMD[] = { 1037dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::MDString::get(VMContext, Sel.getAsString()), 1038dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::MDString::get(VMContext, Class->getSuperClass()->getNameAsString()), 1039dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::ConstantInt::get(llvm::Type::getInt1Ty(VMContext), IsClassMessage) 1040dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall }; 10416f141659cab11109d9931d92d0988f8850778de3Jay Foad llvm::MDNode *node = llvm::MDNode::get(VMContext, impMD); 1042dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall 10434b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall llvm::Instruction *call; 1044ef072fd2f3347cfd857d6eb787b245b950771430John McCall RValue msgRet = CGF.EmitCall(FnInfo, imp, Return, ActualArgs, 10454b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall 0, &call); 10464b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall call->setMetadata(msgSendMDKind, node); 10474b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall return msgRet; 104820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 104920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 10501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// Generate code for a message send expression. 10519f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallRValue 10529f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCGNU::GenerateMessageSend(CodeGenFunction &CGF, 1053ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 10547f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 10557f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 1056f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 1057df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 1058c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall const ObjCInterfaceDecl *Class, 1059df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method) { 10600bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGBuilderTy &Builder = CGF.Builder; 10610bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall 1062664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // Strip out message sends to retain / release in GC mode 1063e6a11a62d1d66d10a87d81ed697348d66d59adf7David Chisnall if (CGM.getLangOptions().getGCMode() == LangOptions::GCOnly) { 1064ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == RetainSel || Sel == AutoreleaseSel) { 10650bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall return RValue::get(EnforceType(Builder, Receiver, 10660bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGM.getTypes().ConvertType(ResultType))); 1067ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1068ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == ReleaseSel) { 1069ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return RValue::get(0); 1070ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1071ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1072664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1073664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // If the return type is something that goes in an integer register, the 1074664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // runtime will handle 0 returns. For other cases, we fill in the 0 value 1075664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // ourselves. 1076664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // 1077664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // The language spec says the result of this kind of message send is 1078664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // undefined, but lots of people seem to have forgotten to read that 1079664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // paragraph and insist on sending messages to nil that have structure 1080664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // returns. With GCC, this generates a random return value (whatever happens 1081664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // to be on the stack / in those registers at the time) on most platforms, 1082c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // and generates an illegal instruction trap on SPARC. With LLVM it corrupts 1083c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // the stack. 1084c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall bool isPointerSizedReturn = (ResultType->isAnyPointerType() || 1085c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall ResultType->isIntegralOrEnumerationType() || ResultType->isVoidType()); 1086664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1087664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::BasicBlock *startBB = 0; 1088664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::BasicBlock *messageBB = 0; 1089a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall llvm::BasicBlock *continueBB = 0; 1090664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1091664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall if (!isPointerSizedReturn) { 1092664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall startBB = Builder.GetInsertBlock(); 1093664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall messageBB = CGF.createBasicBlock("msgSend"); 1094a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall continueBB = CGF.createBasicBlock("continue"); 1095664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1096664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Value *isNil = Builder.CreateICmpEQ(Receiver, 1097664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Constant::getNullValue(Receiver->getType())); 1098a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall Builder.CreateCondBr(isNil, continueBB, messageBB); 1099664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall CGF.EmitBlock(messageBB); 1100664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } 1101664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 11020f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall IdTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(ASTIdTy)); 1103df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::Value *cmd; 1104df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian if (Method) 1105d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian cmd = GetSelector(Builder, Method); 1106df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian else 1107d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian cmd = GetSelector(Builder, Sel); 1108c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall cmd = EnforceType(Builder, cmd, SelectorTy); 1109c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Receiver = EnforceType(Builder, Receiver, IdTy); 1110c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 1111c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *impMD[] = { 1112c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDString::get(VMContext, Sel.getAsString()), 1113c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDString::get(VMContext, Class ? Class->getNameAsString() :""), 1114c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::ConstantInt::get(llvm::Type::getInt1Ty(VMContext), Class!=0) 1115c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall }; 11166f141659cab11109d9931d92d0988f8850778de3Jay Foad llvm::MDNode *node = llvm::MDNode::get(VMContext, impMD); 1117b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1118c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Get the IMP to call 1119c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *imp = LookupIMP(CGF, Receiver, cmd, node); 1120c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 1121c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CallArgList ActualArgs; 112204c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(Receiver), ASTIdTy); 112304c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(cmd), CGF.getContext().getObjCSelType()); 1124b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.insert(ActualArgs.end(), CallArgs.begin(), CallArgs.end()); 1125b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1126b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CodeGenTypes &Types = CGM.getTypes(); 112704a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall const CGFunctionInfo &FnInfo = Types.getFunctionInfo(ResultType, ActualArgs, 1128264ba48dc98f3f843935a485d5b086f7e0fdc4f1Rafael Espindola FunctionType::ExtInfo()); 11296793966aa221764f579cc8436bd641e1ec339c6dDaniel Dunbar const llvm::FunctionType *impType = 11306793966aa221764f579cc8436bd641e1ec339c6dDaniel Dunbar Types.GetFunctionType(FnInfo, Method ? Method->isVariadic() : false); 1131c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall imp = EnforceType(Builder, imp, llvm::PointerType::getUnqual(impType)); 113263e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall 113363e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall 113434e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian // For sender-aware dispatch, we pass the sender as the third argument to a 113534e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian // lookup function. When sending messages from C code, the sender is nil. 1136d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // objc_msg_lookup_sender(id *receiver, SEL selector, id sender); 11374b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall llvm::Instruction *call; 1138ef072fd2f3347cfd857d6eb787b245b950771430John McCall RValue msgRet = CGF.EmitCall(FnInfo, imp, Return, ActualArgs, 11394b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall 0, &call); 11404b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall call->setMetadata(msgSendMDKind, node); 1141664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1142a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall 1143664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall if (!isPointerSizedReturn) { 1144a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall messageBB = CGF.Builder.GetInsertBlock(); 1145a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall CGF.Builder.CreateBr(continueBB); 1146a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall CGF.EmitBlock(continueBB); 1147664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall if (msgRet.isScalar()) { 1148664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Value *v = msgRet.getScalarVal(); 1149bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi = Builder.CreatePHI(v->getType(), 2); 1150664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(v, messageBB); 1151664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(llvm::Constant::getNullValue(v->getType()), startBB); 1152664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall msgRet = RValue::get(phi); 1153664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } else if (msgRet.isAggregate()) { 1154664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Value *v = msgRet.getAggregateAddr(); 1155bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi = Builder.CreatePHI(v->getType(), 2); 1156664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall const llvm::PointerType *RetTy = cast<llvm::PointerType>(v->getType()); 1157866163bf6c66211a9b4d5ba160ac02de04ce4be6David Chisnall llvm::AllocaInst *NullVal = 1158866163bf6c66211a9b4d5ba160ac02de04ce4be6David Chisnall CGF.CreateTempAlloca(RetTy->getElementType(), "null"); 1159664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall CGF.InitTempAlloca(NullVal, 1160664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Constant::getNullValue(RetTy->getElementType())); 1161664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(v, messageBB); 1162664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(NullVal, startBB); 1163664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall msgRet = RValue::getAggregate(phi); 1164664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } else /* isComplex() */ { 1165664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall std::pair<llvm::Value*,llvm::Value*> v = msgRet.getComplexVal(); 1166bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi = Builder.CreatePHI(v.first->getType(), 2); 1167664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(v.first, messageBB); 1168664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(llvm::Constant::getNullValue(v.first->getType()), 1169664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall startBB); 1170bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi2 = Builder.CreatePHI(v.second->getType(), 2); 1171664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi2->addIncoming(v.second, messageBB); 1172664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi2->addIncoming(llvm::Constant::getNullValue(v.second->getType()), 1173664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall startBB); 1174664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall msgRet = RValue::getComplex(phi, phi2); 1175664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } 1176664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } 1177664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall return msgRet; 117820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 117920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 11801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// Generates a MethodList. Used in construction of a objc_class and 118120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// objc_category structures. 11829f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallllvm::Constant *CGObjCGNU::GenerateMethodList(const llvm::StringRef &ClassName, 11839f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const llvm::StringRef &CategoryName, 11841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::SmallVectorImpl<Selector> &MethodSels, 11851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes, 118620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList) { 11870f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall if (MethodSels.empty()) 11880f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall return NULLPtr; 11891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 119047a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCMethodTy = llvm::StructType::get(VMContext, 119120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime creates it us. 119220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Method types 1193c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall IMPTy, //Method pointer 119420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 119520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 119620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 119720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size(); i < e; ++i) { 119820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 11999f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *Method = 120020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov TheModule.getFunction(SymbolNameForMethod(ClassName, CategoryName, 12019f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall MethodSels[i], 12029f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall isClassMethodList)); 12039f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall assert(Method && "Can't generate metadata for method that doesn't exist"); 12049f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *C = MakeConstantString(MethodSels[i].getAsString()); 12059f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(C); 12069f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(MethodTypes[i]); 12079f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Method = llvm::ConstantExpr::getBitCast(Method, 1208c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall IMPTy); 12099f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(Method); 12109f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Methods.push_back(llvm::ConstantStruct::get(ObjCMethodTy, Elements)); 121120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 121220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 121320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 121496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodTy, 12151e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Methods.size()); 12167db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *MethodArray = llvm::ConstantArray::get(ObjCMethodArrayTy, 1217fba676396703e87a5034e5f308aa30a633468f66Chris Lattner Methods); 121820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 121920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing list pointer, array and array count 122020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<const llvm::Type*, 16> ObjCMethodListFields; 12218c8f69ec1477424e11faef6b235505584d61e522Owen Anderson llvm::PATypeHolder OpaqueNextTy = llvm::OpaqueType::get(VMContext); 122296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::Type *NextPtrTy = llvm::PointerType::getUnqual(OpaqueNextTy); 122347a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCMethodListTy = llvm::StructType::get(VMContext, 12241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NextPtrTy, 12251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump IntTy, 122620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodArrayTy, 122720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 122820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Refine next pointer type to concrete type 122920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::cast<llvm::OpaqueType>( 123020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov OpaqueNextTy.get())->refineAbstractTypeTo(ObjCMethodListTy); 123120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodListTy = llvm::cast<llvm::StructType>(OpaqueNextTy.get()); 123220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 123320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 123403e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson Methods.push_back(llvm::ConstantPointerNull::get( 123596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(ObjCMethodListTy))); 12360032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson Methods.push_back(llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), 123720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodTypes.size())); 123820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(MethodArray); 12391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 124020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 124120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodListTy, Methods, ".objc_method_list"); 124220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 124320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 124420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generates an IvarList. Used in construction of a objc_class. 124520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateIvarList( 124620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 124720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 124820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets) { 12491804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall if (IvarNames.size() == 0) 12501804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall return NULLPtr; 12511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 125247a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCIvarTy = llvm::StructType::get(VMContext, 125320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 125420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 125520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, 125620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 125720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 125820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 125920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = IvarNames.size() ; i < e ; i++) { 126020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 12618a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(IvarNames[i]); 12628a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(IvarTypes[i]); 126320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IvarOffsets[i]); 126408e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Ivars.push_back(llvm::ConstantStruct::get(ObjCIvarTy, Elements)); 126520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 126620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 126720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 126896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCIvarArrayTy = llvm::ArrayType::get(ObjCIvarTy, 126920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarNames.size()); 127020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 12711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 127220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 12734a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(IntTy, (int)IvarNames.size())); 12747db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson Elements.push_back(llvm::ConstantArray::get(ObjCIvarArrayTy, Ivars)); 127520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing array and array count 127647a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCIvarListTy = llvm::StructType::get(VMContext, IntTy, 127720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCIvarArrayTy, 127820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 127920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 128020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 128120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCIvarListTy, Elements, ".objc_ivar_list"); 12820f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 12830f984268b05edab2cc555a427c441baa9c252658Chris Lattner 128420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate a class structure 128520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateClassStructure( 128620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 128720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 128820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 1289d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 129020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 129120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 129220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 129320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 1294d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Protocols, 1295d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *IvarOffsets, 12968c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall llvm::Constant *Properties, 12978c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall bool isMeta) { 129820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Set up the class structure 129920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Note: Several of these are char*s when they should be ids. This is 130020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // because the runtime performs this translation on load. 1301d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // 1302d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Fields marked New ABI are part of the GNUstep runtime. We emit them 1303d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // anyway; the classes will still work with the GNU runtime, they will just 1304d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // be ignored. 130547a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ClassTy = llvm::StructType::get(VMContext, 130620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // class_pointer 130720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // super_class 130820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // name 130920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // version 131020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // info 131120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // instance_size 131220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IVars->getType(), // ivars 131320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods->getType(), // methods 13141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // These are all filled in by the runtime, so we pretend 131520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // dtable 131620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // subclass_list 131720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // sibling_class 131820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // protocols 131920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // gc_object_type 1320d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // New ABI: 1321d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian LongTy, // abi_version 1322d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IvarOffsets->getType(), // ivar_offsets 1323d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties->getType(), // properties 132420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 13254a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::Constant *Zero = llvm::ConstantInt::get(LongTy, 0); 132620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Fill in the structure 132720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 13283c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(MetaClass, PtrToInt8Ty)); 132920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SuperClass); 1330d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner Elements.push_back(MakeConstantString(Name, ".class_name")); 133120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Zero); 13324a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, info)); 133305f3a507bb53ed2bd5573d551a26654a604187ebDavid Chisnall if (isMeta) { 133405f3a507bb53ed2bd5573d551a26654a604187ebDavid Chisnall llvm::TargetData td(&TheModule); 1335e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck Elements.push_back( 1336e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck llvm::ConstantInt::get(LongTy, 1337e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck td.getTypeSizeInBits(ClassTy) / 1338e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck CGM.getContext().getCharWidth())); 133905f3a507bb53ed2bd5573d551a26654a604187ebDavid Chisnall } else 134005f3a507bb53ed2bd5573d551a26654a604187ebDavid Chisnall Elements.push_back(InstanceSize); 134120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IVars); 134220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Methods); 1343d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 1344d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 1345d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 13463c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(Protocols, PtrTy)); 1347d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 1348d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(Zero); 1349d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(IvarOffsets); 1350d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(Properties); 135120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 135241d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // This is now an externally visible symbol, so that we can speed up class 135341d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // messages in the next ABI. 13548c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall return MakeGlobal(ClassTy, Elements, (isMeta ? "_OBJC_METACLASS_": 13558c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall "_OBJC_CLASS_") + std::string(Name), llvm::GlobalValue::ExternalLinkage); 135620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 135720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 135820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateProtocolMethodList( 135920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames, 136020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes) { 13611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 136247a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCMethodDescTy = llvm::StructType::get(VMContext, 136320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime does the casting for us. 136420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 136520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 136620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 136720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 136820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size() ; i < e ; i++) { 136920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 13701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(MethodNames[i]); 13718a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MethodTypes[i]); 137208e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Methods.push_back(llvm::ConstantStruct::get(ObjCMethodDescTy, Elements)); 137320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 137496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodDescTy, 137520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodNames.size()); 13767db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *Array = llvm::ConstantArray::get(ObjCMethodArrayTy, 1377bb1c8600218b3244340331165fc7cba7bf227655Mike Stump Methods); 137847a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCMethodDescListTy = llvm::StructType::get(VMContext, 137920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, ObjCMethodArrayTy, NULL); 138020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 13814a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Methods.push_back(llvm::ConstantInt::get(IntTy, MethodNames.size())); 138220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(Array); 138320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodDescListTy, Methods, ".objc_method_list"); 138420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 1385bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 138620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// Create the protocol list structure used in classes, categories and so on 138720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateProtocolList( 138820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols) { 138996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 139020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Protocols.size()); 139147a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ProtocolListTy = llvm::StructType::get(VMContext, 139220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, //Should be a recurisve pointer, but it's always NULL here. 13938fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall SizeTy, 139420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolArrayTy, 139520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 13961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 139720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (const std::string *iter = Protocols.begin(), *endIter = Protocols.end(); 139820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != endIter ; iter++) { 1399ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall llvm::Constant *protocol = 0; 1400ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall llvm::StringMap<llvm::Constant*>::iterator value = 1401ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall ExistingProtocols.find(*iter); 1402ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall if (value == ExistingProtocols.end()) { 1403f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian protocol = GenerateEmptyProtocol(*iter); 1404ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall } else { 1405ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall protocol = value->getValue(); 1406ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall } 14073c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::Constant *Ptr = llvm::ConstantExpr::getBitCast(protocol, 1408a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson PtrToInt8Ty); 140920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Ptr); 141020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 14117db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 141220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements); 141320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 141420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 14154a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, Protocols.size())); 141620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolArray); 141720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ProtocolListTy, Elements, ".objc_protocol_list"); 141820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 141920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 14201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpllvm::Value *CGObjCGNU::GenerateProtocolRef(CGBuilderTy &Builder, 1421af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD) { 1422f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Value *protocol = ExistingProtocols[PD->getNameAsString()]; 14231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::Type *T = 1424f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian CGM.getTypes().ConvertType(CGM.getContext().getObjCProtoType()); 142596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson return Builder.CreateBitCast(protocol, llvm::PointerType::getUnqual(T)); 1426f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian} 1427f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 1428f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanianllvm::Constant *CGObjCGNU::GenerateEmptyProtocol( 1429f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian const std::string &ProtocolName) { 1430f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::SmallVector<std::string, 0> EmptyStringVector; 1431f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 0> EmptyConstantVector; 1432f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 1433f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *ProtocolList = GenerateProtocolList(EmptyStringVector); 1434d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *MethodList = 1435f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian GenerateProtocolMethodList(EmptyConstantVector, EmptyConstantVector); 1436f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // Protocols are objects containing lists of the methods implemented and 1437f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // protocols adopted. 143847a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ProtocolTy = llvm::StructType::get(VMContext, IdTy, 1439f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian PtrToInt8Ty, 1440f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian ProtocolList->getType(), 1441d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1442d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1443d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1444d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1445f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian NULL); 14461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 1447f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // The isa pointer must be set to a magic number so the runtime knows it's 1448f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // the correct layout. 14493c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getIntToPtr( 14509f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), 14519f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ProtocolVersion), IdTy)); 1452f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 1453f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(ProtocolList); 1454d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1455d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1456d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1457d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1458f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian return MakeGlobal(ProtocolTy, Elements, ".objc_protocol"); 145920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 146020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1461af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbarvoid CGObjCGNU::GenerateProtocol(const ObjCProtocolDecl *PD) { 1462af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar ASTContext &Context = CGM.getContext(); 14638ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ProtocolName = PD->getNameAsString(); 1464af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 1465af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar for (ObjCProtocolDecl::protocol_iterator PI = PD->protocol_begin(), 1466af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar E = PD->protocol_end(); PI != E; ++PI) 1467d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*PI)->getNameAsString()); 1468af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodNames; 1469af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 1470d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 16> OptionalInstanceMethodNames; 1471d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 16> OptionalInstanceMethodTypes; 147217945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (ObjCProtocolDecl::instmeth_iterator iter = PD->instmeth_begin(), 147317945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis E = PD->instmeth_end(); iter != E; iter++) { 1474af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 1475af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl(*iter, TypeStr); 1476d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if ((*iter)->getImplementationControl() == ObjCMethodDecl::Optional) { 1477d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodNames.push_back( 1478d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1479d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 1480d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1481d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodNames.push_back( 1482d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1483d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 1484d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1485af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 1486af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar // Collect information about class methods: 1487af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodNames; 1488af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 1489d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 16> OptionalClassMethodNames; 1490d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 16> OptionalClassMethodTypes; 14911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCProtocolDecl::classmeth_iterator 149217945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = PD->classmeth_begin(), endIter = PD->classmeth_end(); 149317945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter != endIter ; iter++) { 1494af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 1495af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 1496d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if ((*iter)->getImplementationControl() == ObjCMethodDecl::Optional) { 1497d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassMethodNames.push_back( 1498d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1499d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 1500d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1501d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodNames.push_back( 1502d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1503d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodTypes.push_back(MakeConstantString(TypeStr)); 1504d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1505af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 150620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 150720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ProtocolList = GenerateProtocolList(Protocols); 150820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceMethodList = 150920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(InstanceMethodNames, InstanceMethodTypes); 151020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = 151120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(ClassMethodNames, ClassMethodTypes); 1512d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalInstanceMethodList = 1513d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolMethodList(OptionalInstanceMethodNames, 1514d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodTypes); 1515d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalClassMethodList = 1516d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolMethodList(OptionalClassMethodNames, 1517d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodTypes); 1518d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1519d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Property metadata: name, attributes, isSynthesized, setter name, setter 1520d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // types, getter name, getter types. 1521d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // The isSynthesized value is always set to 0 in a protocol. It exists to 1522d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // simplify the runtime library by allowing it to use the same data 1523d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // structures for protocol metadata everywhere. 1524d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::StructType *PropertyMetadataTy = llvm::StructType::get(VMContext, 1525d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, Int8Ty, Int8Ty, PtrToInt8Ty, PtrToInt8Ty, PtrToInt8Ty, 1526d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, NULL); 1527d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Properties; 1528d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> OptionalProperties; 1529d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1530d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all of the property methods need adding to the method list and to the 1531d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // property metadata list. 1532d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (ObjCContainerDecl::prop_iterator 1533d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter = PD->prop_begin(), endIter = PD->prop_end(); 1534d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1535d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Fields; 1536d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ObjCPropertyDecl *property = (*iter); 1537d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1538d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(property->getNameAsString())); 1539d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 1540d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian property->getPropertyAttributes())); 1541d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 0)); 1542d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *getter = property->getGetterMethodDecl()) { 1543d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1544d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(getter,TypeStr); 1545d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 1546d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(TypeEncoding); 1547d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(getter->getSelector().getAsString())); 1548d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1549d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1550d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1551d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1552d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1553d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *setter = property->getSetterMethodDecl()) { 1554d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1555d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(setter,TypeStr); 1556d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 1557d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(TypeEncoding); 1558d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(setter->getSelector().getAsString())); 1559d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1560d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1561d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1562d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1563d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1564d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (property->getPropertyImplementation() == ObjCPropertyDecl::Optional) { 1565d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalProperties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1566d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1567d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1568d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1569d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1570d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyArray = llvm::ConstantArray::get( 1571d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType::get(PropertyMetadataTy, Properties.size()), Properties); 1572d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* PropertyListInitFields[] = 1573d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian {llvm::ConstantInt::get(IntTy, Properties.size()), NULLPtr, PropertyArray}; 1574d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1575d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyListInit = 15760d36dd28bb40b08a93d7f64196794882eee08ee8Nick Lewycky llvm::ConstantStruct::get(VMContext, PropertyListInitFields, 3, false); 1577d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyList = new llvm::GlobalVariable(TheModule, 1578d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyListInit->getType(), false, llvm::GlobalValue::InternalLinkage, 1579d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyListInit, ".objc_property_list"); 1580d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1581d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyArray = 1582d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantArray::get(llvm::ArrayType::get(PropertyMetadataTy, 1583d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalProperties.size()) , OptionalProperties); 1584d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* OptionalPropertyListInitFields[] = { 1585d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantInt::get(IntTy, OptionalProperties.size()), NULLPtr, 1586d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyArray }; 1587d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1588d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyListInit = 15890d36dd28bb40b08a93d7f64196794882eee08ee8Nick Lewycky llvm::ConstantStruct::get(VMContext, OptionalPropertyListInitFields, 3, false); 1590d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyList = new llvm::GlobalVariable(TheModule, 1591d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyListInit->getType(), false, 1592d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::InternalLinkage, OptionalPropertyListInit, 1593d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ".objc_property_list"); 1594d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 159520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocols are objects containing lists of the methods implemented and 159620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // protocols adopted. 159747a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ProtocolTy = llvm::StructType::get(VMContext, IdTy, 159820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 159920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolList->getType(), 160020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov InstanceMethodList->getType(), 160120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ClassMethodList->getType(), 1602d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodList->getType(), 1603d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodList->getType(), 1604d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyList->getType(), 1605d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyList->getType(), 160620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 16071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 160820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The isa pointer must be set to a magic number so the runtime knows it's 160920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // the correct layout. 16103c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getIntToPtr( 16119f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), 16129f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ProtocolVersion), IdTy)); 161320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 161420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolList); 161520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceMethodList); 161620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassMethodList); 1617d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalInstanceMethodList); 1618d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalClassMethodList); 1619d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(PropertyList); 1620d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalPropertyList); 16211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ExistingProtocols[ProtocolName] = 16223c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolTy, Elements, 162320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_protocol"), IdTy); 162420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 1625d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianvoid CGObjCGNU::GenerateProtocolHolderCategory(void) { 1626d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Collect information about instance methods 1627d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<Selector, 1> MethodSels; 1628d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 1> MethodTypes; 1629d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1630d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Elements; 1631d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const std::string ClassName = "__ObjC_Protocol_Holder_Ugly_Hack"; 1632d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const std::string CategoryName = "AnotherHack"; 1633d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MakeConstantString(CategoryName)); 1634d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MakeConstantString(ClassName)); 1635d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Instance method list 1636d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1637d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassName, CategoryName, MethodSels, MethodTypes, false), PtrTy)); 1638d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Class method list 1639d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1640d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassName, CategoryName, MethodSels, MethodTypes, true), PtrTy)); 1641d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Protocol list 1642d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrTy, 1643d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.size()); 1644d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::StructType *ProtocolListTy = llvm::StructType::get(VMContext, 1645d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy, //Should be a recurisve pointer, but it's always NULL here. 16468fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall SizeTy, 1647d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolArrayTy, 1648d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NULL); 1649d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> ProtocolElements; 1650d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (llvm::StringMapIterator<llvm::Constant*> iter = 1651d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.begin(), endIter = ExistingProtocols.end(); 1652d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1653d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Ptr = llvm::ConstantExpr::getBitCast(iter->getValue(), 1654d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy); 1655d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(Ptr); 1656d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1657d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 1658d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements); 1659d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.clear(); 1660d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(NULLPtr); 1661d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(llvm::ConstantInt::get(LongTy, 1662d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.size())); 1663d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(ProtocolArray); 1664d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolListTy, 1665d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements, ".objc_protocol_list"), PtrTy)); 1666d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Categories.push_back(llvm::ConstantExpr::getBitCast( 1667d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeGlobal(llvm::StructType::get(VMContext, PtrToInt8Ty, PtrToInt8Ty, 1668d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy, PtrTy, PtrTy, NULL), Elements), PtrTy)); 1669d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian} 167020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 16717ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateCategory(const ObjCCategoryImplDecl *OCD) { 16728ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = OCD->getClassInterface()->getNameAsString(); 16738ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string CategoryName = OCD->getNameAsString(); 16747ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 16757ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> InstanceMethodSels; 16767ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 1677653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCCategoryImplDecl::instmeth_iterator 167817945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->instmeth_begin(), endIter = OCD->instmeth_end(); 1679653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 16807ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 16817ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 16827ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 16838a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 16847ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 16857ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 16867ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 16877ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> ClassMethodSels; 16887ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 16891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCCategoryImplDecl::classmeth_iterator 169017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->classmeth_begin(), endIter = OCD->classmeth_end(); 1691653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 16927ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 16937ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 16947ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 16958a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 16967ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 16977ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 16987ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 16997ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 1700ad9e06d82ae627e858e5bfe4a7f1f9337b5b0a15David Chisnall const ObjCCategoryDecl *CatDecl = OCD->getCategoryDecl(); 1701ad9e06d82ae627e858e5bfe4a7f1f9337b5b0a15David Chisnall const ObjCList<ObjCProtocolDecl> &Protos = CatDecl->getReferencedProtocols(); 17027ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCList<ObjCProtocolDecl>::iterator I = Protos.begin(), 17037ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar E = Protos.end(); I != E; ++I) 1704d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 17057ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 170620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 170720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(CategoryName)); 170820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ClassName)); 17091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Instance method list 17103c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1711a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, InstanceMethodSels, InstanceMethodTypes, 171220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov false), PtrTy)); 171320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Class method list 17143c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1715a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, ClassMethodSels, ClassMethodTypes, true), 171620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy)); 171720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocol list 17183c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast( 171920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolList(Protocols), PtrTy)); 17203c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Categories.push_back(llvm::ConstantExpr::getBitCast( 17211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump MakeGlobal(llvm::StructType::get(VMContext, PtrToInt8Ty, PtrToInt8Ty, 172247a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson PtrTy, PtrTy, PtrTy, NULL), Elements), PtrTy)); 172320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 17247ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 1725d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianllvm::Constant *CGObjCGNU::GeneratePropertyList(const ObjCImplementationDecl *OID, 1726d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVectorImpl<Selector> &InstanceMethodSels, 1727d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVectorImpl<llvm::Constant*> &InstanceMethodTypes) { 1728d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ASTContext &Context = CGM.getContext(); 1729d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // 1730d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Property metadata: name, attributes, isSynthesized, setter name, setter 1731d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // types, getter name, getter types. 1732d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::StructType *PropertyMetadataTy = llvm::StructType::get(VMContext, 1733d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, Int8Ty, Int8Ty, PtrToInt8Ty, PtrToInt8Ty, PtrToInt8Ty, 1734d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, NULL); 1735d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Properties; 1736d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1737d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1738d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all of the property methods need adding to the method list and to the 1739d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // property metadata list. 1740d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (ObjCImplDecl::propimpl_iterator 1741d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter = OID->propimpl_begin(), endIter = OID->propimpl_end(); 1742d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1743d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Fields; 1744d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ObjCPropertyDecl *property = (*iter)->getPropertyDecl(); 174542ba04a072c69d84a6660e4498215086662910acDavid Chisnall ObjCPropertyImplDecl *propertyImpl = *iter; 174642ba04a072c69d84a6660e4498215086662910acDavid Chisnall bool isSynthesized = (propertyImpl->getPropertyImplementation() == 174742ba04a072c69d84a6660e4498215086662910acDavid Chisnall ObjCPropertyImplDecl::Synthesize); 1748d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1749d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(property->getNameAsString())); 1750d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 1751d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian property->getPropertyAttributes())); 175242ba04a072c69d84a6660e4498215086662910acDavid Chisnall Fields.push_back(llvm::ConstantInt::get(Int8Ty, isSynthesized)); 1753d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *getter = property->getGetterMethodDecl()) { 1754d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1755d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(getter,TypeStr); 1756d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 175742ba04a072c69d84a6660e4498215086662910acDavid Chisnall if (isSynthesized) { 175842ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodTypes.push_back(TypeEncoding); 175942ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodSels.push_back(getter->getSelector()); 176042ba04a072c69d84a6660e4498215086662910acDavid Chisnall } 1761d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(getter->getSelector().getAsString())); 1762d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1763d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1764d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1765d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1766d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1767d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *setter = property->getSetterMethodDecl()) { 1768d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1769d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(setter,TypeStr); 1770d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 177142ba04a072c69d84a6660e4498215086662910acDavid Chisnall if (isSynthesized) { 177242ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodTypes.push_back(TypeEncoding); 177342ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodSels.push_back(setter->getSelector()); 177442ba04a072c69d84a6660e4498215086662910acDavid Chisnall } 1775d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(setter->getSelector().getAsString())); 1776d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1777d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1778d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1779d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1780d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1781d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1782d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1783d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType *PropertyArrayTy = 1784d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType::get(PropertyMetadataTy, Properties.size()); 1785d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyArray = llvm::ConstantArray::get(PropertyArrayTy, 1786d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties); 1787d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* PropertyListInitFields[] = 1788d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian {llvm::ConstantInt::get(IntTy, Properties.size()), NULLPtr, PropertyArray}; 1789d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1790d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyListInit = 17910d36dd28bb40b08a93d7f64196794882eee08ee8Nick Lewycky llvm::ConstantStruct::get(VMContext, PropertyListInitFields, 3, false); 1792d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian return new llvm::GlobalVariable(TheModule, PropertyListInit->getType(), false, 1793d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::InternalLinkage, PropertyListInit, 1794d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ".objc_property_list"); 1795d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian} 1796d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 17977ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateClass(const ObjCImplementationDecl *OID) { 17987ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ASTContext &Context = CGM.getContext(); 17997ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 18007ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the superclass name. 18011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCInterfaceDecl * SuperClassDecl = 18027ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar OID->getClassInterface()->getSuperClass(); 18038ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string SuperClassName; 18042a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (SuperClassDecl) { 18058ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner SuperClassName = SuperClassDecl->getNameAsString(); 18062a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner EmitClassRef(SuperClassName); 18072a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 18087ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 18097ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the class name 181009dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner ObjCInterfaceDecl *ClassDecl = 181109dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner const_cast<ObjCInterfaceDecl *>(OID->getClassInterface()); 18128ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = ClassDecl->getNameAsString(); 18132a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // Emit the symbol that is used to generate linker errors if this class is 18142a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // referenced in other modules but not declared. 1815c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian std::string classSymbolName = "__objc_class_name_" + ClassName; 18161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (llvm::GlobalVariable *symbol = 1817c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian TheModule.getGlobalVariable(classSymbolName)) { 18184a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson symbol->setInitializer(llvm::ConstantInt::get(LongTy, 0)); 1819c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } else { 18201c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, LongTy, false, 18214a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::GlobalValue::ExternalLinkage, llvm::ConstantInt::get(LongTy, 0), 18221c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson classSymbolName); 1823c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } 18241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18252bebbf0acee55404de4b8846713b64429e744e8fDaniel Dunbar // Get the size of instances. 18265f022d82696c84e4d127c558871d68ac6273274eKen Dyck int instanceSize = 18275f022d82696c84e4d127c558871d68ac6273274eKen Dyck Context.getASTObjCImplementationLayout(OID).getSize().getQuantity(); 18287ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 18297ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance variables. 18307ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarNames; 18317ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarTypes; 18327ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarOffsets; 18331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1834d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> IvarOffsetValues; 1835d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 18361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump int superInstanceSize = !SuperClassDecl ? 0 : 18375f022d82696c84e4d127c558871d68ac6273274eKen Dyck Context.getASTObjCInterfaceLayout(SuperClassDecl).getSize().getQuantity(); 18389cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // For non-fragile ivars, set the instance size to 0 - {the size of just this 18399cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // class}. The runtime will then set this to the correct value on load. 18409cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 18419cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian instanceSize = 0 - (instanceSize - superInstanceSize); 18429cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 18437f63cb098f2461643f71ea590c1a477603f27f63David Chisnall 18447f63cb098f2461643f71ea590c1a477603f27f63David Chisnall // Collect declared and synthesized ivars. 18457f63cb098f2461643f71ea590c1a477603f27f63David Chisnall llvm::SmallVector<ObjCIvarDecl*, 16> OIvars; 18467f63cb098f2461643f71ea590c1a477603f27f63David Chisnall CGM.getContext().ShallowCollectObjCIvars(ClassDecl, OIvars); 18477f63cb098f2461643f71ea590c1a477603f27f63David Chisnall 18487f63cb098f2461643f71ea590c1a477603f27f63David Chisnall for (unsigned i = 0, e = OIvars.size(); i != e; ++i) { 18497f63cb098f2461643f71ea590c1a477603f27f63David Chisnall ObjCIvarDecl *IVD = OIvars[i]; 18507ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Store the name 18517f63cb098f2461643f71ea590c1a477603f27f63David Chisnall IvarNames.push_back(MakeConstantString(IVD->getNameAsString())); 18527ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the type encoding for this ivar 18537ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 18547f63cb098f2461643f71ea590c1a477603f27f63David Chisnall Context.getObjCEncodingForType(IVD->getType(), TypeStr); 18558a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarTypes.push_back(MakeConstantString(TypeStr)); 18567ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the offset 1857d901da531433254210a08e8b1f9e1ad049b340aaDavid Chisnall uint64_t BaseOffset = ComputeIvarBaseOffset(CGM, OID, IVD); 1858aecbf24a6bad049437f8fec97e557d414003a3dbDavid Chisnall uint64_t Offset = BaseOffset; 18599cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 1860d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Offset = BaseOffset - superInstanceSize; 18619cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 18627ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar IvarOffsets.push_back( 18630032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), Offset)); 1864d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IvarOffsetValues.push_back(new llvm::GlobalVariable(TheModule, IntTy, 1865d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian false, llvm::GlobalValue::ExternalLinkage, 1866e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall llvm::ConstantInt::get(IntTy, Offset), 1867d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian "__objc_ivar_offset_value_" + ClassName +"." + 18687f63cb098f2461643f71ea590c1a477603f27f63David Chisnall IVD->getNameAsString())); 18697ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 18709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::GlobalVariable *IvarOffsetArray = 18719f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall MakeGlobalArray(PtrToIntTy, IvarOffsetValues, ".ivar.offsets"); 18729f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 18737ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 18747ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 18757ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> InstanceMethodSels; 18767ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 18771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCImplementationDecl::instmeth_iterator 187817945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->instmeth_begin(), endIter = OID->instmeth_end(); 1879653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 18807ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 18817ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 18827ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 18838a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 18847ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 1885d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1886d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Properties = GeneratePropertyList(OID, InstanceMethodSels, 1887d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes); 1888d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 18897ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 18907ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 18917ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> ClassMethodSels; 18927ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 1893653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCImplementationDecl::classmeth_iterator 189417945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->classmeth_begin(), endIter = OID->classmeth_end(); 1895653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 18967ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 18977ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 18987ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 18998a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 19007ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 19017ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 19027ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 19037ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCList<ObjCProtocolDecl> &Protos =ClassDecl->getReferencedProtocols(); 19047ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCList<ObjCProtocolDecl>::iterator I = Protos.begin(), 19057ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar E = Protos.end(); I != E; ++I) 1906d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 19077ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 19087ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 19097ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 191020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the superclass pointer. 191120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass; 19128ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner if (!SuperClassName.empty()) { 191320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov SuperClass = MakeConstantString(SuperClassName, ".super_class_name"); 191420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } else { 191503e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson SuperClass = llvm::ConstantPointerNull::get(PtrToInt8Ty); 191620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 191720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Empty vector used to construct empty method lists 191820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<llvm::Constant*, 1> empty; 191920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the method and instance variable lists 192020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MethodList = GenerateMethodList(ClassName, "", 1921a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner InstanceMethodSels, InstanceMethodTypes, false); 192220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = GenerateMethodList(ClassName, "", 1923a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassMethodSels, ClassMethodTypes, true); 192420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IvarList = GenerateIvarList(IvarNames, IvarTypes, 192520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarOffsets); 19261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Irrespective of whether we are compiling for a fragile or non-fragile ABI, 19278a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // we emit a symbol containing the offset for each ivar in the class. This 19288a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // allows code compiled for the non-Fragile ABI to inherit from code compiled 19298a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // for the legacy ABI, without causing problems. The converse is also 19308a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // possible, but causes all ivar accesses to be fragile. 1931e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall 19328a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Offset pointer for getting at the correct field in the ivar list when 19338a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // setting up the alias. These are: The base address for the global, the 19348a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // ivar array (second field), the ivar in this list (set for each ivar), and 19358a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // the offset (third field in ivar structure) 19368a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall const llvm::Type *IndexTy = llvm::Type::getInt32Ty(VMContext); 19378a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *offsetPointerIndexes[] = {Zeros[0], 19381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::ConstantInt::get(IndexTy, 1), 0, 19398a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::ConstantInt::get(IndexTy, 2) }; 19408a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall 1941e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall 1942e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall for (unsigned i = 0, e = OIvars.size(); i != e; ++i) { 1943e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall ObjCIvarDecl *IVD = OIvars[i]; 19448a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall const std::string Name = "__objc_ivar_offset_" + ClassName + '.' 1945e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall + IVD->getNameAsString(); 1946e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall offsetPointerIndexes[2] = llvm::ConstantInt::get(IndexTy, i); 19478a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Get the correct ivar field 19488a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *offsetValue = llvm::ConstantExpr::getGetElementPtr( 19498a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarList, offsetPointerIndexes, 4); 1950e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // Get the existing variable, if one exists. 19518a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *offset = TheModule.getNamedGlobal(Name); 19528a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (offset) { 19538a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offset->setInitializer(offsetValue); 19548a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // If this is the real definition, change its linkage type so that 19558a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // different modules will use this one, rather than their private 19568a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // copy. 19578a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offset->setLinkage(llvm::GlobalValue::ExternalLinkage); 19588a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } else { 19598a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Add a new alias if there isn't one already. 19608a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offset = new llvm::GlobalVariable(TheModule, offsetValue->getType(), 19618a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall false, llvm::GlobalValue::ExternalLinkage, offsetValue, Name); 19628a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 19638a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 196420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //Generate metaclass for class methods 196520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClassStruct = GenerateClassStructure(NULLPtr, 19661804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall NULLPtr, 0x12L, ClassName.c_str(), 0, Zeros[0], GenerateIvarList( 19678c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall empty, empty, empty), ClassMethodList, NULLPtr, NULLPtr, NULLPtr, true); 19685efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 196920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the class structure 19708ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner llvm::Constant *ClassStruct = 1971d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateClassStructure(MetaClassStruct, SuperClass, 0x11L, 19728ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner ClassName.c_str(), 0, 19734a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::ConstantInt::get(LongTy, instanceSize), IvarList, 1974d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList, GenerateProtocolList(Protocols), IvarOffsetArray, 1975d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties); 19765efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 19775efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Resolve the class aliases, if they exist. 19785efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (ClassPtrAlias) { 19790b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall ClassPtrAlias->replaceAllUsesWith( 19803c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(ClassStruct, IdTy)); 19810b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall ClassPtrAlias->eraseFromParent(); 19825efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ClassPtrAlias = 0; 19835efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 19845efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (MetaClassPtrAlias) { 19850b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall MetaClassPtrAlias->replaceAllUsesWith( 19863c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(MetaClassStruct, IdTy)); 19870b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall MetaClassPtrAlias->eraseFromParent(); 19885efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias = 0; 19895efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 19905efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 199120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Add class structure to list to be added to the symtab later 19923c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson ClassStruct = llvm::ConstantExpr::getBitCast(ClassStruct, PtrToInt8Ty); 199320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(ClassStruct); 199420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 199520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1996c38e9affd4519ea199af22419c8c794973cc4b23Fariborz Jahanian 19971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpllvm::Function *CGObjCGNU::ModuleInitFunction() { 199820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Only emit an ObjC load function if no Objective-C stuff has been called 199920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov if (Classes.empty() && Categories.empty() && ConstantStrings.empty() && 20009f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ExistingProtocols.empty() && SelectorTable.empty()) 200120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return NULL; 20021b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 2003d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all referenced protocols to a category. 2004d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolHolderCategory(); 2005d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 2006e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::StructType *SelStructTy = dyn_cast<llvm::StructType>( 2007e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelectorTy->getElementType()); 2008e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::Type *SelStructPtrTy = SelectorTy; 2009e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (SelStructTy == 0) { 201047a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson SelStructTy = llvm::StructType::get(VMContext, PtrToInt8Ty, 201147a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson PtrToInt8Ty, NULL); 201296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson SelStructPtrTy = llvm::PointerType::getUnqual(SelStructTy); 2013e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 2014e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 20151b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman // Name the ObjC types to make the IR a bit easier to read 2016e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner TheModule.addTypeName(".objc_selector", SelStructPtrTy); 20171b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman TheModule.addTypeName(".objc_id", IdTy); 20181b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman TheModule.addTypeName(".objc_imp", IMPTy); 20191b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 202020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 202171238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::Constant *Statics = NULLPtr; 202220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate statics list: 202371238f67c5df13eef19450d66b7a7ab28377192aChris Lattner if (ConstantStrings.size()) { 202496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *StaticsArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 202571238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.size() + 1); 202671238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.push_back(NULLPtr); 20278a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall 20281b0969590e712d7d52fc9c0d43d3ab85c36d07a6Daniel Dunbar llvm::StringRef StringClass = CGM.getLangOptions().ObjCConstantStringClass; 20299f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 20301b0969590e712d7d52fc9c0d43d3ab85c36d07a6Daniel Dunbar if (StringClass.empty()) StringClass = "NXConstantString"; 20319f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 20328a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MakeConstantString(StringClass, 20338a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ".objc_static_class_name")); 20347db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson Elements.push_back(llvm::ConstantArray::get(StaticsArrayTy, 203571238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings)); 20361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::StructType *StaticsListTy = 203747a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType::get(VMContext, PtrToInt8Ty, StaticsArrayTy, NULL); 2038a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson llvm::Type *StaticsListPtrTy = 203996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(StaticsListTy); 204071238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListTy, Elements, ".objc_statics"); 20411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::ArrayType *StaticsListArrayTy = 204296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType::get(StaticsListPtrTy, 2); 204371238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.clear(); 204471238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.push_back(Statics); 2045c9c88b4159791c48e486ca94e3743b5979e2b7a6Owen Anderson Elements.push_back(llvm::Constant::getNullValue(StaticsListPtrTy)); 204671238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListArrayTy, Elements, ".objc_statics_ptr"); 20473c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Statics = llvm::ConstantExpr::getBitCast(Statics, PtrTy); 204871238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 204920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of classes, categories, and constant objects 205096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ClassListTy = llvm::ArrayType::get(PtrToInt8Ty, 205120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size() + Categories.size() + 2); 20521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::StructType *SymTabTy = llvm::StructType::get(VMContext, 205347a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson LongTy, SelStructPtrTy, 20540032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getInt16Ty(VMContext), 20550032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getInt16Ty(VMContext), 2056630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ClassListTy, NULL); 205720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 205820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 205920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Pointer to an array of selectors used in this module. 206020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Selectors; 20619f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::vector<llvm::GlobalAlias*> SelectorAliases; 20629f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall for (SelectorMap::iterator iter = SelectorTable.begin(), 20639f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall iterEnd = SelectorTable.end(); iter != iterEnd ; ++iter) { 20649f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 20659f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string SelNameStr = iter->first.getAsString(); 20669f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *SelName = ExportUniqueString(SelNameStr, ".objc_sel_name"); 20679f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 20689f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::SmallVectorImpl<TypedSelector> &Types = iter->second; 20699f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall for (llvm::SmallVectorImpl<TypedSelector>::iterator i = Types.begin(), 20709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall e = Types.end() ; i!=e ; i++) { 20719f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 20729f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *SelectorTypeEncoding = NULLPtr; 20739f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (!i->first.empty()) 20749f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorTypeEncoding = MakeConstantString(i->first, ".objc_sel_types"); 20759f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 20769f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(SelName); 20779f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(SelectorTypeEncoding); 20789f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 20799f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.clear(); 20809f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 20819f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // Store the selector alias for later replacement 20829f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorAliases.push_back(i->second); 20839f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 208420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 20859f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall unsigned SelectorCount = Selectors.size(); 20869f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // NULL-terminate the selector list. This should not actually be required, 20879f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // because the selector list has a length field. Unfortunately, the GCC 20889f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // runtime decides to ignore the length field and expects a NULL terminator, 20899f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // and GCC cooperates with this by always setting the length to 0. 209020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 209120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 209208e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 209320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 20949f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 209520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of static selectors 20969f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(llvm::ConstantInt::get(LongTy, SelectorCount)); 20979f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *SelectorList = MakeGlobalArray(SelStructTy, Selectors, 209820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_selector_list"); 20991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantExpr::getBitCast(SelectorList, 2100e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelStructPtrTy)); 210120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 210220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Now that all of the static selectors exist, create pointers to them. 21039f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall for (unsigned int i=0 ; i<SelectorCount ; i++) { 21049f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 210520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 21069f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), i), Zeros[0]}; 21079f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // FIXME: We're generating redundant loads and stores here! 2108c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Constant *SelPtr = llvm::ConstantExpr::getGetElementPtr(SelectorList, 2109c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Idxs, 2); 2110e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // If selectors are defined as an opaque type, cast the pointer to this 2111e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // type. 2112c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SelPtr = llvm::ConstantExpr::getBitCast(SelPtr, SelectorTy); 21139f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorAliases[i]->replaceAllUsesWith(SelPtr); 21149f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorAliases[i]->eraseFromParent(); 211520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 21169f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 211720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of classes defined. 21181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantInt::get(llvm::Type::getInt16Ty(VMContext), 211920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size())); 212020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of categories defined 21211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantInt::get(llvm::Type::getInt16Ty(VMContext), 212220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Categories.size())); 212320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an array of classes, then categories, then static object instances 212420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.insert(Classes.end(), Categories.begin(), Categories.end()); 212520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // NULL-terminated list of static object instances (mainly constant strings) 212620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(Statics); 212720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(NULLPtr); 21287db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *ClassList = llvm::ConstantArray::get(ClassListTy, Classes); 212920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassList); 21301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Construct the symbol table 213120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SymTab= MakeGlobal(SymTabTy, Elements); 213220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 213320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The symbol table is contained in a module which has some version-checking 213420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // constants 213547a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType * ModuleTy = llvm::StructType::get(VMContext, LongTy, LongTy, 2136a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall PtrToInt8Ty, llvm::PointerType::getUnqual(SymTabTy), 2137a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall (CGM.getLangOptions().getGCMode() == LangOptions::NonGC) ? NULL : IntTy, 2138a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall NULL); 213920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 21409f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // Runtime version, used for ABI compatibility checking. 21419f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(llvm::ConstantInt::get(LongTy, RuntimeVersion)); 214291a0b51438e5259a79d68d7450c453827beed9e2Fariborz Jahanian // sizeof(ModuleTy) 214374a8bbf0654fbbf37be04b240b5bbe591f37f242Benjamin Kramer llvm::TargetData td(&TheModule); 2144e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck Elements.push_back( 2145e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck llvm::ConstantInt::get(LongTy, 2146e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck td.getTypeSizeInBits(ModuleTy) / 2147e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck CGM.getContext().getCharWidth())); 21489f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 21499f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // The path to the source file where this module was declared 21509f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SourceManager &SM = CGM.getContext().getSourceManager(); 21519f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const FileEntry *mainFile = SM.getFileEntryForID(SM.getMainFileID()); 21529f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string path = 21539f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string(mainFile->getDir()->getName()) + '/' + mainFile->getName(); 21549f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(MakeConstantString(path, ".objc_source_file_name")); 215520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SymTab); 2156a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall 2157a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall switch (CGM.getLangOptions().getGCMode()) { 2158a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall case LangOptions::GCOnly: 2159a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall Elements.push_back(llvm::ConstantInt::get(IntTy, 2)); 2160a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall case LangOptions::NonGC: 2161a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall break; 2162a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall case LangOptions::HybridGC: 2163a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall Elements.push_back(llvm::ConstantInt::get(IntTy, 1)); 2164a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall } 2165a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall 216620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *Module = MakeGlobal(ModuleTy, Elements); 216720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 216820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create the load function calling the runtime entry point with the module 216920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // structure 217020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function * LoadFunction = llvm::Function::Create( 21710032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), false), 217220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, ".objc_load_function", 217320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &TheModule); 21740032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::BasicBlock *EntryBB = 21750032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::BasicBlock::Create(VMContext, "entry", LoadFunction); 2176a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson CGBuilderTy Builder(VMContext); 217720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.SetInsertPoint(EntryBB); 217826c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 217995d318c4c10437db40ca6e15fdf32e04012da58eBenjamin Kramer llvm::FunctionType *FT = 218095d318c4c10437db40ca6e15fdf32e04012da58eBenjamin Kramer llvm::FunctionType::get(Builder.getVoidTy(), 218195d318c4c10437db40ca6e15fdf32e04012da58eBenjamin Kramer llvm::PointerType::getUnqual(ModuleTy), true); 218295d318c4c10437db40ca6e15fdf32e04012da58eBenjamin Kramer llvm::Value *Register = CGM.CreateRuntimeFunction(FT, "__objc_exec_class"); 218320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateCall(Register, Module); 218420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateRetVoid(); 21859cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 218620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return LoadFunction; 218720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 21887ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 2189679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanianllvm::Function *CGObjCGNU::GenerateMethod(const ObjCMethodDecl *OMD, 21901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCContainerDecl *CD) { 21911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCCategoryImplDecl *OCD = 21923e0a540b6d846178857289ec0eb8470a278d11a3Steve Naroff dyn_cast<ObjCCategoryImplDecl>(OMD->getDeclContext()); 21939f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::StringRef CategoryName = OCD ? OCD->getName() : ""; 21949f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::StringRef ClassName = CD->getName(); 21959f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Selector MethodName = OMD->getSelector(); 2196f8d49f64ef6ab7e632717a31631fc289aab69428Douglas Gregor bool isClassMethod = !OMD->isInstanceMethod(); 2197391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 2198541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar CodeGenTypes &Types = CGM.getTypes(); 21991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::FunctionType *MethodTy = 2200541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar Types.GetFunctionType(Types.getFunctionInfo(OMD), OMD->isVariadic()); 220120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::string FunctionName = SymbolNameForMethod(ClassName, CategoryName, 220220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodName, isClassMethod); 220320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 2204d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar llvm::Function *Method 22051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump = llvm::Function::Create(MethodTy, 22061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalValue::InternalLinkage, 22071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump FunctionName, 22081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump &TheModule); 2209391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner return Method; 2210391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 2211391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 2212789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetPropertyGetFunction() { 22139f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return GetPropertyFn; 221449f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 221549f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 2216789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetPropertySetFunction() { 22179f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return SetPropertyFn; 221849f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 221949f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 2220789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetGetStructFunction() { 22219f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return GetStructPropertyFn; 22228fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall} 2223789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetSetStructFunction() { 22249f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return SetStructPropertyFn; 22256cc590602f41c3e98e8af0023d54296c8eca7910Fariborz Jahanian} 22266cc590602f41c3e98e8af0023d54296c8eca7910Fariborz Jahanian 2227309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbarllvm::Constant *CGObjCGNU::EnumerationMutationFunction() { 22289f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return EnumerationMutationFn; 22292abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson} 22302abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson 22319f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitSynchronizedStmt(CodeGenFunction &CGF, 2232f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtSynchronizedStmt &S) { 22339735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall EmitAtSynchronizedStmt(CGF, S, SyncEnterFn, SyncExitFn); 2234f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall} 22355dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 22365dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 22379f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitTryStmt(CodeGenFunction &CGF, 2238f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtTryStmt &S) { 2239f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // Unlike the Apple non-fragile runtimes, which also uses 2240f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // unwind-based zero cost exceptions, the GNU Objective C runtime's 2241f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // EH support isn't a veneer over C++ EH. Instead, exception 2242f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // objects are created by __objc_exception_throw and destroyed by 2243f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // the personality function; this avoids the need for bracketing 2244f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // catch handlers with calls to __blah_begin_catch/__blah_end_catch 2245f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // (or even _Unwind_DeleteException), but probably doesn't 2246f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // interoperate very well with foreign exceptions. 22479735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // 224880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // In Objective-C++ mode, we actually emit something equivalent to the C++ 22499735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // exception handler. 22509735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall EmitTryCatchStmt(CGF, S, EnterCatchFn, ExitCatchFn, ExceptionReThrowFn); 22519735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return ; 225264d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 225364d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 22549f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitThrowStmt(CodeGenFunction &CGF, 225549f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar const ObjCAtThrowStmt &S) { 22565dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ExceptionAsObject; 22575dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 22585dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const Expr *ThrowExpr = S.getThrowExpr()) { 22595dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *Exception = CGF.EmitScalarExpr(ThrowExpr); 22601e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ExceptionAsObject = Exception; 22615dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 22621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((!CGF.ObjCEHValueStack.empty() && CGF.ObjCEHValueStack.back()) && 22635dc0867af17b3bd6f567897433853b2b4767446cChris Lattner "Unexpected rethrow outside @catch block."); 22645dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ExceptionAsObject = CGF.ObjCEHValueStack.back(); 22655dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 22661e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ExceptionAsObject = 22671e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian CGF.Builder.CreateBitCast(ExceptionAsObject, IdTy, "tmp"); 22681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 22695dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Note: This may have to be an invoke, if we want to support constructs like: 22705dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @try { 22715dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @throw(obj); 22725dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // } 22735dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @catch(id) ... 22745dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // 22755dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // This is effectively turning @throw into an incredibly-expensive goto, but 22765dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // it may happen as a result of inlining followed by missed optimizations, or 22775dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // as a result of stupidity. 22785dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *UnwindBB = CGF.getInvokeDest(); 22795dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!UnwindBB) { 22809f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CGF.Builder.CreateCall(ExceptionThrowFn, ExceptionAsObject); 22815dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateUnreachable(); 22825dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 22839f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CGF.Builder.CreateInvoke(ExceptionThrowFn, UnwindBB, UnwindBB, &ExceptionAsObject, 22845dc0867af17b3bd6f567897433853b2b4767446cChris Lattner &ExceptionAsObject+1); 22855dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 22865dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Clear the insertion point to indicate we are in unreachable code. 22875dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.ClearInsertionPoint(); 228864d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 228964d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 22909f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallllvm::Value * CGObjCGNU::EmitObjCWeakRead(CodeGenFunction &CGF, 22911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *AddrWeakObj) { 2292ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 229331fc0c1a16dabd397dd3323fb0dbe7052b87abd0David Chisnall AddrWeakObj = EnforceType(B, AddrWeakObj, PtrToIdTy); 2294ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return B.CreateCall(WeakReadFn, AddrWeakObj); 22956dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian} 22966dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian 22979f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCWeakAssign(CodeGenFunction &CGF, 22981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *src, llvm::Value *dst) { 2299ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2300ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2301ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2302ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall2(WeakAssignFn, src, dst); 23033e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian} 23043e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian 23059f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCGlobalAssign(CodeGenFunction &CGF, 2306021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian llvm::Value *src, llvm::Value *dst, 2307021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian bool threadlocal) { 2308ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2309ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2310ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2311021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian if (!threadlocal) 2312021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian B.CreateCall2(GlobalAssignFn, src, dst); 2313021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian else 2314021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian // FIXME. Add threadloca assign API 2315021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian assert(false && "EmitObjCGlobalAssign - Threal Local API NYI"); 231658626500527695865683d1d65053743de8770b60Fariborz Jahanian} 231758626500527695865683d1d65053743de8770b60Fariborz Jahanian 23189f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCIvarAssign(CodeGenFunction &CGF, 23196c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *src, llvm::Value *dst, 23206c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *ivarOffset) { 2321ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2322ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2323b44eda31a214ad88616acbe28c3f0a70268adc6cDavid Chisnall dst = EnforceType(B, dst, IdTy); 2324ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall3(IvarAssignFn, src, dst, ivarOffset); 23257eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian} 23267eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian 23279f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCStrongCastAssign(CodeGenFunction &CGF, 23281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *src, llvm::Value *dst) { 2329ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2330ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2331ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2332ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall2(StrongCastAssignFn, src, dst); 233358626500527695865683d1d65053743de8770b60Fariborz Jahanian} 233458626500527695865683d1d65053743de8770b60Fariborz Jahanian 23359f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitGCMemmoveCollectable(CodeGenFunction &CGF, 23361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *DestPtr, 2337082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *SrcPtr, 233855bcace250e1ff366e4482714b344b8cbc8be5f3Fariborz Jahanian llvm::Value *Size) { 2339ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 234068e5e1331d99140ae5dd7b27c3dd28618827dfc8David Chisnall DestPtr = EnforceType(B, DestPtr, PtrTy); 234168e5e1331d99140ae5dd7b27c3dd28618827dfc8David Chisnall SrcPtr = EnforceType(B, SrcPtr, PtrTy); 2342ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 234355bcace250e1ff366e4482714b344b8cbc8be5f3Fariborz Jahanian B.CreateCall3(MemMoveFn, DestPtr, SrcPtr, Size); 2344082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian} 2345082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian 23469cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianllvm::GlobalVariable *CGObjCGNU::ObjCIvarOffsetVariable( 23479cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *ID, 23489cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar) { 23499cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const std::string Name = "__objc_ivar_offset_" + ID->getNameAsString() 23509cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian + '.' + Ivar->getNameAsString(); 23519cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Emit the variable and initialize it with what we think the correct value 23529cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // is. This allows code compiled with non-fragile ivars to work correctly 23539cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // when linked against code which isn't (most of the time). 23548a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *IvarOffsetPointer = TheModule.getNamedGlobal(Name); 23558a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (!IvarOffsetPointer) { 2356e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // This will cause a run-time crash if we accidentally use it. A value of 2357e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // 0 would seem more sensible, but will silently overwrite the isa pointer 2358e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // causing a great deal of confusion. 2359e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall uint64_t Offset = -1; 2360e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // We can't call ComputeIvarBaseOffset() here if we have the 2361e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // implementation, because it will create an invalid ASTRecordLayout object 2362e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // that we are then stuck with forever, so we only initialize the ivar 2363e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // offset variable with a guess if we only have the interface. The 2364e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // initializer will be reset later anyway, when we are generating the class 2365e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // description. 2366e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall if (!CGM.getContext().getObjCImplementation( 2367cb421fa690da545b58a720abe5f1c49b166dbde7Dan Gohman const_cast<ObjCInterfaceDecl *>(ID))) 2368d901da531433254210a08e8b1f9e1ad049b340aaDavid Chisnall Offset = ComputeIvarBaseOffset(CGM, ID, Ivar); 2369d901da531433254210a08e8b1f9e1ad049b340aaDavid Chisnall 23709cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::ConstantInt *OffsetGuess = 2371f950837b8250c7f08d0b7b15ace0b35740721c9dDavid Chisnall llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), Offset, "ivar"); 23728a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Don't emit the guess in non-PIC code because the linker will not be able 23738a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // to replace it with the real version for a library. In non-PIC code you 23748a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // must compile with the fragile ABI if you want to use ivars from a 23751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // GCC-compiled class. 23768a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (CGM.getLangOptions().PICLevel) { 23778a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *IvarOffsetGV = new llvm::GlobalVariable(TheModule, 23788a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Type::getInt32Ty(VMContext), false, 23798a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalValue::PrivateLinkage, OffsetGuess, Name+".guess"); 23808a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetPointer = new llvm::GlobalVariable(TheModule, 23818a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetGV->getType(), false, llvm::GlobalValue::LinkOnceAnyLinkage, 23828a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetGV, Name); 23838a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } else { 23848a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetPointer = new llvm::GlobalVariable(TheModule, 23853c0ef8cc0dc246bd3083e8cdd63005e8873d36d2Benjamin Kramer llvm::Type::getInt32PtrTy(VMContext), false, 23863c0ef8cc0dc246bd3083e8cdd63005e8873d36d2Benjamin Kramer llvm::GlobalValue::ExternalLinkage, 0, Name); 23878a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 23889cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 23898a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall return IvarOffsetPointer; 23909cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 23919cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 23929f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallLValue CGObjCGNU::EmitObjCValueForIvar(CodeGenFunction &CGF, 2393598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 2394598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 2395598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 2396598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers) { 2397c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall const ObjCInterfaceDecl *ID = 2398c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall ObjectTy->getAs<ObjCObjectType>()->getInterface(); 23999777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar return EmitValueForIvarAtOffset(CGF, ID, BaseValue, Ivar, CVRQualifiers, 24009777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar EmitIvarOffset(CGF, ID, Ivar)); 24010bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian} 2402bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 24039cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianstatic const ObjCInterfaceDecl *FindIvarInterface(ASTContext &Context, 24049cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *OID, 24059cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *OIVD) { 24069cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::SmallVector<ObjCIvarDecl*, 16> Ivars; 24078e6ac1d80055fa37b9b84029c7e751624ba7f84cFariborz Jahanian Context.ShallowCollectObjCIvars(OID, Ivars); 24089cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian for (unsigned k = 0, e = Ivars.size(); k != e; ++k) { 24099cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (OIVD == Ivars[k]) 24109cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return OID; 24119cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 24121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 24139cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Otherwise check in the super class. 24149cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (const ObjCInterfaceDecl *Super = OID->getSuperClass()) 24159cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return FindIvarInterface(Context, Super, OIVD); 24161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 24179cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return 0; 24189cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 24190bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian 24209f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallllvm::Value *CGObjCGNU::EmitIvarOffset(CodeGenFunction &CGF, 24212a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 2422f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar) { 24238a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (CGM.getLangOptions().ObjCNonFragileABI) { 24249cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Interface = FindIvarInterface(CGM.getContext(), Interface, Ivar); 24257e02d1aebb3ee0841f398a836ba5d34be5cdb4b3David Chisnall return CGF.Builder.CreateZExtOrBitCast( 24267e02d1aebb3ee0841f398a836ba5d34be5cdb4b3David Chisnall CGF.Builder.CreateLoad(CGF.Builder.CreateLoad( 24277e02d1aebb3ee0841f398a836ba5d34be5cdb4b3David Chisnall ObjCIvarOffsetVariable(Interface, Ivar), false, "ivar")), 24287e02d1aebb3ee0841f398a836ba5d34be5cdb4b3David Chisnall PtrDiffTy); 24299cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 24309777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar uint64_t Offset = ComputeIvarBaseOffset(CGF.CGM, Interface, Ivar); 24317e02d1aebb3ee0841f398a836ba5d34be5cdb4b3David Chisnall return llvm::ConstantInt::get(PtrDiffTy, Offset, "ivar"); 2432f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian} 2433f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian 24349f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCRuntime * 24359f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclang::CodeGen::CreateGNUObjCRuntime(CodeGenModule &CGM) { 24369f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (CGM.getLangOptions().ObjCNonFragileABI) 24379f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return new CGObjCGNUstep(CGM); 24389f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return new CGObjCGCC(CGM); 24390f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 2440