CGObjC.cpp revision 5f9e272e632e951b1efe824cd16acb4d96077930
15508518a2702b00be3b15a26d772bde968972f54Anders Carlsson//===---- CGBuiltin.cpp - Emit LLVM Code for builtins ---------------------===// 25508518a2702b00be3b15a26d772bde968972f54Anders Carlsson// 35508518a2702b00be3b15a26d772bde968972f54Anders Carlsson// The LLVM Compiler Infrastructure 45508518a2702b00be3b15a26d772bde968972f54Anders Carlsson// 50bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// This file is distributed under the University of Illinois Open Source 60bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// License. See LICENSE.TXT for details. 75508518a2702b00be3b15a26d772bde968972f54Anders Carlsson// 85508518a2702b00be3b15a26d772bde968972f54Anders Carlsson//===----------------------------------------------------------------------===// 95508518a2702b00be3b15a26d772bde968972f54Anders Carlsson// 105508518a2702b00be3b15a26d772bde968972f54Anders Carlsson// This contains code to emit Objective-C code as LLVM code. 115508518a2702b00be3b15a26d772bde968972f54Anders Carlsson// 125508518a2702b00be3b15a26d772bde968972f54Anders Carlsson//===----------------------------------------------------------------------===// 135508518a2702b00be3b15a26d772bde968972f54Anders Carlsson 14bcbd03ac0ac0890a436e1a179d3a285e914d41faDevang Patel#include "CGDebugInfo.h" 152979ec73b4f974d85f2ce84167712177a44c6f09Ted Kremenek#include "CGObjCRuntime.h" 165508518a2702b00be3b15a26d772bde968972f54Anders Carlsson#include "CodeGenFunction.h" 175508518a2702b00be3b15a26d772bde968972f54Anders Carlsson#include "CodeGenModule.h" 18f85e193739c953358c865005855253af4f68a497John McCall#include "TargetInfo.h" 1985c59edda02df48fae8dc85049743319bc6e7e89Daniel Dunbar#include "clang/AST/ASTContext.h" 20c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar#include "clang/AST/DeclObjC.h" 2116f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/AST/StmtObjC.h" 22e66f4e3e3ae9d7d11b0c302211066fad69228abaDaniel Dunbar#include "clang/Basic/Diagnostic.h" 233d8400d9a61aa4b63ff35e5cede405b32a41425eAnders Carlsson#include "llvm/ADT/STLExtras.h" 24c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar#include "llvm/Target/TargetData.h" 25f85e193739c953358c865005855253af4f68a497John McCall#include "llvm/InlineAsm.h" 265508518a2702b00be3b15a26d772bde968972f54Anders Carlssonusing namespace clang; 275508518a2702b00be3b15a26d772bde968972f54Anders Carlssonusing namespace CodeGen; 285508518a2702b00be3b15a26d772bde968972f54Anders Carlsson 29f85e193739c953358c865005855253af4f68a497John McCalltypedef llvm::PointerIntPair<llvm::Value*,1,bool> TryEmitResult; 30f85e193739c953358c865005855253af4f68a497John McCallstatic TryEmitResult 31f85e193739c953358c865005855253af4f68a497John McCalltryEmitARCRetainScalarExpr(CodeGenFunction &CGF, const Expr *e); 32f85e193739c953358c865005855253af4f68a497John McCall 33f85e193739c953358c865005855253af4f68a497John McCall/// Given the address of a variable of pointer type, find the correct 34f85e193739c953358c865005855253af4f68a497John McCall/// null to store into it. 35f85e193739c953358c865005855253af4f68a497John McCallstatic llvm::Constant *getNullForVariable(llvm::Value *addr) { 362acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *type = 37f85e193739c953358c865005855253af4f68a497John McCall cast<llvm::PointerType>(addr->getType())->getElementType(); 38f85e193739c953358c865005855253af4f68a497John McCall return llvm::ConstantPointerNull::get(cast<llvm::PointerType>(type)); 39f85e193739c953358c865005855253af4f68a497John McCall} 40f85e193739c953358c865005855253af4f68a497John McCall 418fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner/// Emits an instance of NSConstantString representing the object. 421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpllvm::Value *CodeGenFunction::EmitObjCStringLiteral(const ObjCStringLiteral *E) 4371fcec9abf2ce66d5e17a24bd021680e94e42f0dDaniel Dunbar{ 440d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall llvm::Constant *C = 450d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall CGM.getObjCRuntime().GenerateConstantString(E->getString()); 46ed7c618f849e2541b1d0288c43154937652c5b15Daniel Dunbar // FIXME: This bitcast should just be made an invariant on the Runtime. 473c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson return llvm::ConstantExpr::getBitCast(C, ConvertType(E->getType())); 488fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner} 498fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner 508fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner/// Emit a selector. 518fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattnerllvm::Value *CodeGenFunction::EmitObjCSelectorExpr(const ObjCSelectorExpr *E) { 528fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner // Untyped selector. 538fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner // Note that this implementation allows for non-constant strings to be passed 548fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner // as arguments to @selector(). Currently, the only thing preventing this 558fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner // behaviour is the type checking in the front end. 566d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar return CGM.getObjCRuntime().GetSelector(Builder, E->getSelector()); 578fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner} 588fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner 59ed7c618f849e2541b1d0288c43154937652c5b15Daniel Dunbarllvm::Value *CodeGenFunction::EmitObjCProtocolExpr(const ObjCProtocolExpr *E) { 60ed7c618f849e2541b1d0288c43154937652c5b15Daniel Dunbar // FIXME: This should pass the Decl not the name. 61ed7c618f849e2541b1d0288c43154937652c5b15Daniel Dunbar return CGM.getObjCRuntime().GenerateProtocolRef(Builder, E->getProtocol()); 62ed7c618f849e2541b1d0288c43154937652c5b15Daniel Dunbar} 638fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner 64926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor/// \brief Adjust the type of the result of an Objective-C message send 65926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor/// expression when the method has a related result type. 66926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregorstatic RValue AdjustRelatedResultType(CodeGenFunction &CGF, 67926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor const Expr *E, 68926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor const ObjCMethodDecl *Method, 69926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor RValue Result) { 70926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (!Method) 71926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor return Result; 72f85e193739c953358c865005855253af4f68a497John McCall 73926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (!Method->hasRelatedResultType() || 74926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor CGF.getContext().hasSameType(E->getType(), Method->getResultType()) || 75926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor !Result.isScalar()) 76926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor return Result; 77926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor 78926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor // We have applied a related result type. Cast the rvalue appropriately. 79926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor return RValue::get(CGF.Builder.CreateBitCast(Result.getScalarVal(), 80926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor CGF.ConvertType(E->getType()))); 81926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor} 828fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner 83dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall/// Decide whether to extend the lifetime of the receiver of a 84dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall/// returns-inner-pointer message. 85dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCallstatic bool 86dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCallshouldExtendReceiverForInnerPointerMessage(const ObjCMessageExpr *message) { 87dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall switch (message->getReceiverKind()) { 88dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall 89dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall // For a normal instance message, we should extend unless the 90dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall // receiver is loaded from a variable with precise lifetime. 91dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall case ObjCMessageExpr::Instance: { 92dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall const Expr *receiver = message->getInstanceReceiver(); 93dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall const ImplicitCastExpr *ice = dyn_cast<ImplicitCastExpr>(receiver); 94dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall if (!ice || ice->getCastKind() != CK_LValueToRValue) return true; 95dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall receiver = ice->getSubExpr()->IgnoreParens(); 96dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall 97dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall // Only __strong variables. 98dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall if (receiver->getType().getObjCLifetime() != Qualifiers::OCL_Strong) 99dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall return true; 100dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall 101dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall // All ivars and fields have precise lifetime. 102dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall if (isa<MemberExpr>(receiver) || isa<ObjCIvarRefExpr>(receiver)) 103dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall return false; 104dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall 105dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall // Otherwise, check for variables. 106dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall const DeclRefExpr *declRef = dyn_cast<DeclRefExpr>(ice->getSubExpr()); 107dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall if (!declRef) return true; 108dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall const VarDecl *var = dyn_cast<VarDecl>(declRef->getDecl()); 109dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall if (!var) return true; 110dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall 111dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall // All variables have precise lifetime except local variables with 112dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall // automatic storage duration that aren't specially marked. 113dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall return (var->hasLocalStorage() && 114dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall !var->hasAttr<ObjCPreciseLifetimeAttr>()); 115dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall } 116dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall 117dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall case ObjCMessageExpr::Class: 118dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall case ObjCMessageExpr::SuperClass: 119dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall // It's never necessary for class objects. 120dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall return false; 121dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall 122dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall case ObjCMessageExpr::SuperInstance: 123dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall // We generally assume that 'self' lives throughout a method call. 124dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall return false; 125dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall } 126dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall 127dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall llvm_unreachable("invalid receiver kind"); 128dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall} 129dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall 130ef072fd2f3347cfd857d6eb787b245b950771430John McCallRValue CodeGenFunction::EmitObjCMessageExpr(const ObjCMessageExpr *E, 131ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return) { 1328fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner // Only the lookup mechanism and first two arguments of the method 1338fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner // implementation vary between runtimes. We can get the receiver and 1348fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner // arguments in generic code. 1351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 136f85e193739c953358c865005855253af4f68a497John McCall bool isDelegateInit = E->isDelegateInitCall(); 137f85e193739c953358c865005855253af4f68a497John McCall 138dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall const ObjCMethodDecl *method = E->getMethodDecl(); 139dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall 140f85e193739c953358c865005855253af4f68a497John McCall // We don't retain the receiver in delegate init calls, and this is 141f85e193739c953358c865005855253af4f68a497John McCall // safe because the receiver value is always loaded from 'self', 142f85e193739c953358c865005855253af4f68a497John McCall // which we zero out. We don't want to Block_copy block receivers, 143f85e193739c953358c865005855253af4f68a497John McCall // though. 144f85e193739c953358c865005855253af4f68a497John McCall bool retainSelf = 145f85e193739c953358c865005855253af4f68a497John McCall (!isDelegateInit && 146f85e193739c953358c865005855253af4f68a497John McCall CGM.getLangOptions().ObjCAutoRefCount && 147dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall method && 148dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall method->hasAttr<NSConsumesSelfAttr>()); 149f85e193739c953358c865005855253af4f68a497John McCall 150208ff5e8a073de2a5d15cbe03cab8a4c0d935e28Daniel Dunbar CGObjCRuntime &Runtime = CGM.getObjCRuntime(); 1518fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner bool isSuperMessage = false; 152f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar bool isClassMessage = false; 153c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall ObjCInterfaceDecl *OID = 0; 1548fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner // Find the receiver 155926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor QualType ReceiverType; 1560b647a6ea18151149d624ab373e6fe0e819e4a9aDaniel Dunbar llvm::Value *Receiver = 0; 15704badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor switch (E->getReceiverKind()) { 15804badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor case ObjCMessageExpr::Instance: 159926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor ReceiverType = E->getInstanceReceiver()->getType(); 160f85e193739c953358c865005855253af4f68a497John McCall if (retainSelf) { 161f85e193739c953358c865005855253af4f68a497John McCall TryEmitResult ter = tryEmitARCRetainScalarExpr(*this, 162f85e193739c953358c865005855253af4f68a497John McCall E->getInstanceReceiver()); 163f85e193739c953358c865005855253af4f68a497John McCall Receiver = ter.getPointer(); 164dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall if (ter.getInt()) retainSelf = false; 165f85e193739c953358c865005855253af4f68a497John McCall } else 166f85e193739c953358c865005855253af4f68a497John McCall Receiver = EmitScalarExpr(E->getInstanceReceiver()); 16704badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor break; 1681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16904badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor case ObjCMessageExpr::Class: { 170926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor ReceiverType = E->getClassReceiver(); 171926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor const ObjCObjectType *ObjTy = ReceiverType->getAs<ObjCObjectType>(); 1723031c63f7b5b09d5f64609fa7a1922a05b520fa7John McCall assert(ObjTy && "Invalid Objective-C class message send"); 1733031c63f7b5b09d5f64609fa7a1922a05b520fa7John McCall OID = ObjTy->getInterface(); 1743031c63f7b5b09d5f64609fa7a1922a05b520fa7John McCall assert(OID && "Invalid Objective-C class message send"); 175c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall Receiver = Runtime.GetClass(Builder, OID); 176f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar isClassMessage = true; 17704badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor break; 17804badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor } 17904badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor 18004badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor case ObjCMessageExpr::SuperInstance: 181926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor ReceiverType = E->getSuperType(); 18204badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor Receiver = LoadObjCSelf(); 1838fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner isSuperMessage = true; 18404badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor break; 18504badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor 18604badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor case ObjCMessageExpr::SuperClass: 187926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor ReceiverType = E->getSuperType(); 1888fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner Receiver = LoadObjCSelf(); 18904badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor isSuperMessage = true; 19004badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor isClassMessage = true; 19104badcf84c8d504d8491c7c7e29b58f52cb16640Douglas Gregor break; 1928fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner } 1938fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner 194dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall if (retainSelf) 195dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall Receiver = EmitARCRetainNonBlock(Receiver); 196dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall 197dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall // In ARC, we sometimes want to "extend the lifetime" 198dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall // (i.e. retain+autorelease) of receivers of returns-inner-pointer 199dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall // messages. 200dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall if (getLangOptions().ObjCAutoRefCount && method && 201dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall method->hasAttr<ObjCReturnsInnerPointerAttr>() && 202dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall shouldExtendReceiverForInnerPointerMessage(E)) 203dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall Receiver = EmitARCRetainAutorelease(ReceiverType, Receiver); 204dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall 205f85e193739c953358c865005855253af4f68a497John McCall QualType ResultType = 206dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall method ? method->getResultType() : E->getType(); 207f85e193739c953358c865005855253af4f68a497John McCall 20819cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar CallArgList Args; 209dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall EmitCallArgs(Args, method, E->arg_begin(), E->arg_end()); 2101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 211f85e193739c953358c865005855253af4f68a497John McCall // For delegate init calls in ARC, do an unsafe store of null into 212f85e193739c953358c865005855253af4f68a497John McCall // self. This represents the call taking direct ownership of that 213f85e193739c953358c865005855253af4f68a497John McCall // value. We have to do this after emitting the other call 214f85e193739c953358c865005855253af4f68a497John McCall // arguments because they might also reference self, but we don't 215f85e193739c953358c865005855253af4f68a497John McCall // have to worry about any of them modifying self because that would 216f85e193739c953358c865005855253af4f68a497John McCall // be an undefined read and write of an object in unordered 217f85e193739c953358c865005855253af4f68a497John McCall // expressions. 218f85e193739c953358c865005855253af4f68a497John McCall if (isDelegateInit) { 219f85e193739c953358c865005855253af4f68a497John McCall assert(getLangOptions().ObjCAutoRefCount && 220f85e193739c953358c865005855253af4f68a497John McCall "delegate init calls should only be marked in ARC"); 221f85e193739c953358c865005855253af4f68a497John McCall 222f85e193739c953358c865005855253af4f68a497John McCall // Do an unsafe store of null into self. 223f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *selfAddr = 224f85e193739c953358c865005855253af4f68a497John McCall LocalDeclMap[cast<ObjCMethodDecl>(CurCodeDecl)->getSelfDecl()]; 225f85e193739c953358c865005855253af4f68a497John McCall assert(selfAddr && "no self entry for a delegate init call?"); 226f85e193739c953358c865005855253af4f68a497John McCall 227f85e193739c953358c865005855253af4f68a497John McCall Builder.CreateStore(getNullForVariable(selfAddr), selfAddr); 228f85e193739c953358c865005855253af4f68a497John McCall } 2297e70fb217dcdf96faf34df3e197c3831c86f8089Anders Carlsson 230926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor RValue result; 2318fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner if (isSuperMessage) { 2329384c768e93f270118a30ce96546083a666da284Chris Lattner // super is only valid in an Objective-C method 2339384c768e93f270118a30ce96546083a666da284Chris Lattner const ObjCMethodDecl *OMD = cast<ObjCMethodDecl>(CurFuncDecl); 2347ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl = isa<ObjCCategoryImplDecl>(OMD->getDeclContext()); 235926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor result = Runtime.GenerateMessageSendSuper(*this, Return, ResultType, 236926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor E->getSelector(), 237926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor OMD->getClassInterface(), 238926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor isCategoryImpl, 239926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor Receiver, 240926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor isClassMessage, 241926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor Args, 242dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall method); 243926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor } else { 244926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor result = Runtime.GenerateMessageSend(*this, Return, ResultType, 245926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor E->getSelector(), 246926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor Receiver, Args, OID, 247dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall method); 2488fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner } 249f85e193739c953358c865005855253af4f68a497John McCall 250f85e193739c953358c865005855253af4f68a497John McCall // For delegate init calls in ARC, implicitly store the result of 251f85e193739c953358c865005855253af4f68a497John McCall // the call back into self. This takes ownership of the value. 252f85e193739c953358c865005855253af4f68a497John McCall if (isDelegateInit) { 253f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *selfAddr = 254f85e193739c953358c865005855253af4f68a497John McCall LocalDeclMap[cast<ObjCMethodDecl>(CurCodeDecl)->getSelfDecl()]; 255f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *newSelf = result.getScalarVal(); 256f85e193739c953358c865005855253af4f68a497John McCall 257f85e193739c953358c865005855253af4f68a497John McCall // The delegate return type isn't necessarily a matching type; in 258f85e193739c953358c865005855253af4f68a497John McCall // fact, it's quite likely to be 'id'. 2592acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *selfTy = 260f85e193739c953358c865005855253af4f68a497John McCall cast<llvm::PointerType>(selfAddr->getType())->getElementType(); 261f85e193739c953358c865005855253af4f68a497John McCall newSelf = Builder.CreateBitCast(newSelf, selfTy); 262f85e193739c953358c865005855253af4f68a497John McCall 263f85e193739c953358c865005855253af4f68a497John McCall Builder.CreateStore(newSelf, selfAddr); 264f85e193739c953358c865005855253af4f68a497John McCall } 265f85e193739c953358c865005855253af4f68a497John McCall 266dc7c5ad7a15914b7ae24f31f18a20ad2f8ecd0bcJohn McCall return AdjustRelatedResultType(*this, E, method, result); 2675508518a2702b00be3b15a26d772bde968972f54Anders Carlsson} 2685508518a2702b00be3b15a26d772bde968972f54Anders Carlsson 269f85e193739c953358c865005855253af4f68a497John McCallnamespace { 270f85e193739c953358c865005855253af4f68a497John McCallstruct FinishARCDealloc : EHScopeStack::Cleanup { 271ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall void Emit(CodeGenFunction &CGF, Flags flags) { 272f85e193739c953358c865005855253af4f68a497John McCall const ObjCMethodDecl *method = cast<ObjCMethodDecl>(CGF.CurCodeDecl); 273799d34e9505a833549c71f2ac5f842da157ea031John McCall 274799d34e9505a833549c71f2ac5f842da157ea031John McCall const ObjCImplDecl *impl = cast<ObjCImplDecl>(method->getDeclContext()); 275f85e193739c953358c865005855253af4f68a497John McCall const ObjCInterfaceDecl *iface = impl->getClassInterface(); 276f85e193739c953358c865005855253af4f68a497John McCall if (!iface->getSuperClass()) return; 277f85e193739c953358c865005855253af4f68a497John McCall 278799d34e9505a833549c71f2ac5f842da157ea031John McCall bool isCategory = isa<ObjCCategoryImplDecl>(impl); 279799d34e9505a833549c71f2ac5f842da157ea031John McCall 280f85e193739c953358c865005855253af4f68a497John McCall // Call [super dealloc] if we have a superclass. 281f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *self = CGF.LoadObjCSelf(); 282f85e193739c953358c865005855253af4f68a497John McCall 283f85e193739c953358c865005855253af4f68a497John McCall CallArgList args; 284f85e193739c953358c865005855253af4f68a497John McCall CGF.CGM.getObjCRuntime().GenerateMessageSendSuper(CGF, ReturnValueSlot(), 285f85e193739c953358c865005855253af4f68a497John McCall CGF.getContext().VoidTy, 286f85e193739c953358c865005855253af4f68a497John McCall method->getSelector(), 287f85e193739c953358c865005855253af4f68a497John McCall iface, 288799d34e9505a833549c71f2ac5f842da157ea031John McCall isCategory, 289f85e193739c953358c865005855253af4f68a497John McCall self, 290f85e193739c953358c865005855253af4f68a497John McCall /*is class msg*/ false, 291f85e193739c953358c865005855253af4f68a497John McCall args, 292f85e193739c953358c865005855253af4f68a497John McCall method); 293f85e193739c953358c865005855253af4f68a497John McCall } 294f85e193739c953358c865005855253af4f68a497John McCall}; 295f85e193739c953358c865005855253af4f68a497John McCall} 296f85e193739c953358c865005855253af4f68a497John McCall 297af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar/// StartObjCMethod - Begin emission of an ObjCMethod. This generates 298af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar/// the LLVM function and sets the other context used by 299af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar/// CodeGenFunction. 300679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanianvoid CodeGenFunction::StartObjCMethod(const ObjCMethodDecl *OMD, 3018d3f8979e46f9d0b8735566eabe471db0e1e0e53Devang Patel const ObjCContainerDecl *CD, 3028d3f8979e46f9d0b8735566eabe471db0e1e0e53Devang Patel SourceLocation StartLoc) { 303d26bc76c98006609002d9930f8840490e88ac5b5John McCall FunctionArgList args; 3044800ea6ff8017cf803c32a5fd63b94c0614014e3Devang Patel // Check if we should generate debug info for this method. 305aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel if (CGM.getModuleDebugInfo() && !OMD->hasAttr<NoDebugAttr>()) 306aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel DebugInfo = CGM.getModuleDebugInfo(); 3074800ea6ff8017cf803c32a5fd63b94c0614014e3Devang Patel 308679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian llvm::Function *Fn = CGM.getObjCRuntime().GenerateMethod(OMD, CD); 309f80519b919a348db004fba18530706314d1ebfb5Daniel Dunbar 3100e4f40e1bbc4dce16bbb9870300a435419f1b3d5Daniel Dunbar const CGFunctionInfo &FI = CGM.getTypes().getFunctionInfo(OMD); 3110e4f40e1bbc4dce16bbb9870300a435419f1b3d5Daniel Dunbar CGM.SetInternalFunctionAttributes(OMD, Fn, FI); 3124111024be81e7c0525e42dadcc126d27e5bf2425Chris Lattner 313d26bc76c98006609002d9930f8840490e88ac5b5John McCall args.push_back(OMD->getSelfDecl()); 314d26bc76c98006609002d9930f8840490e88ac5b5John McCall args.push_back(OMD->getCmdDecl()); 3154111024be81e7c0525e42dadcc126d27e5bf2425Chris Lattner 31689951a86b594513c2a013532ed45d197413b1087Chris Lattner for (ObjCMethodDecl::param_iterator PI = OMD->param_begin(), 31789951a86b594513c2a013532ed45d197413b1087Chris Lattner E = OMD->param_end(); PI != E; ++PI) 318d26bc76c98006609002d9930f8840490e88ac5b5John McCall args.push_back(*PI); 319b7ec246872b412f0e7bb9e93eacfd78cfa6adfb3Daniel Dunbar 32014110477887e3dc168ffc6c191e72d705051f99ePeter Collingbourne CurGD = OMD; 32114110477887e3dc168ffc6c191e72d705051f99ePeter Collingbourne 3228d3f8979e46f9d0b8735566eabe471db0e1e0e53Devang Patel StartFunction(OMD, OMD->getResultType(), Fn, FI, args, StartLoc); 323f85e193739c953358c865005855253af4f68a497John McCall 324f85e193739c953358c865005855253af4f68a497John McCall // In ARC, certain methods get an extra cleanup. 325f85e193739c953358c865005855253af4f68a497John McCall if (CGM.getLangOptions().ObjCAutoRefCount && 326f85e193739c953358c865005855253af4f68a497John McCall OMD->isInstanceMethod() && 327f85e193739c953358c865005855253af4f68a497John McCall OMD->getSelector().isUnarySelector()) { 328f85e193739c953358c865005855253af4f68a497John McCall const IdentifierInfo *ident = 329f85e193739c953358c865005855253af4f68a497John McCall OMD->getSelector().getIdentifierInfoForSlot(0); 330f85e193739c953358c865005855253af4f68a497John McCall if (ident->isStr("dealloc")) 331f85e193739c953358c865005855253af4f68a497John McCall EHStack.pushCleanup<FinishARCDealloc>(getARCCleanupKind()); 332f85e193739c953358c865005855253af4f68a497John McCall } 333af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar} 334af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 335f85e193739c953358c865005855253af4f68a497John McCallstatic llvm::Value *emitARCRetainLoadOfScalar(CodeGenFunction &CGF, 336f85e193739c953358c865005855253af4f68a497John McCall LValue lvalue, QualType type); 337f85e193739c953358c865005855253af4f68a497John McCall 3382846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanianvoid CodeGenFunction::GenerateObjCGetterBody(ObjCIvarDecl *Ivar, 3392846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian bool IsAtomic, bool IsStrong) { 3402846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian LValue LV = EmitLValueForIvar(TypeOfSelfObject(), LoadObjCSelf(), 3412846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian Ivar, 0); 3422846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian llvm::Value *GetCopyStructFn = 3432846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian CGM.getObjCRuntime().GetGetStructFunction(); 3442846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian CodeGenTypes &Types = CGM.getTypes(); 3452846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian // objc_copyStruct (ReturnValue, &structIvar, 3462846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian // sizeof (Type of Ivar), isAtomic, false); 3472846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian CallArgList Args; 3480774cb84719f2aea3016493a2bbd9a02aa3e0541John McCall RValue RV = RValue::get(Builder.CreateBitCast(ReturnValue, VoidPtrTy)); 34904c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman Args.add(RV, getContext().VoidPtrTy); 3500774cb84719f2aea3016493a2bbd9a02aa3e0541John McCall RV = RValue::get(Builder.CreateBitCast(LV.getAddress(), VoidPtrTy)); 35104c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman Args.add(RV, getContext().VoidPtrTy); 3522846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian // sizeof (Type of Ivar) 3532846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian CharUnits Size = getContext().getTypeSizeInChars(Ivar->getType()); 3542846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian llvm::Value *SizeVal = 3550774cb84719f2aea3016493a2bbd9a02aa3e0541John McCall llvm::ConstantInt::get(Types.ConvertType(getContext().LongTy), 3562846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian Size.getQuantity()); 35704c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman Args.add(RValue::get(SizeVal), getContext().LongTy); 3582846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian llvm::Value *isAtomic = 3592846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian llvm::ConstantInt::get(Types.ConvertType(getContext().BoolTy), 3602846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian IsAtomic ? 1 : 0); 36104c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman Args.add(RValue::get(isAtomic), getContext().BoolTy); 3622846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian llvm::Value *hasStrong = 3632846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian llvm::ConstantInt::get(Types.ConvertType(getContext().BoolTy), 3642846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian IsStrong ? 1 : 0); 36504c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman Args.add(RValue::get(hasStrong), getContext().BoolTy); 3662846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian EmitCall(Types.getFunctionInfo(getContext().VoidTy, Args, 3672846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian FunctionType::ExtInfo()), 3682846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian GetCopyStructFn, ReturnValueSlot(), Args); 3692846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian} 3702846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian 371af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar/// Generate an Objective-C method. An Objective-C method is a C function with 3721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// its pointer, name, and types registered in the class struture. 373af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbarvoid CodeGenFunction::GenerateObjCMethod(const ObjCMethodDecl *OMD) { 3748d3f8979e46f9d0b8735566eabe471db0e1e0e53Devang Patel StartObjCMethod(OMD, OMD->getClassInterface(), OMD->getLocStart()); 3756fb0aee4f9dc261bbec72e1283ad8dc0557a6d96Argyrios Kyrtzidis EmitStmt(OMD->getBody()); 3766fb0aee4f9dc261bbec72e1283ad8dc0557a6d96Argyrios Kyrtzidis FinishFunction(OMD->getBodyRBrace()); 377af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar} 378af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 379f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump// FIXME: I wasn't sure about the synthesis approach. If we end up generating an 380f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump// AST for the whole body we can just fall back to having a GenerateFunction 381f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump// which takes the body Stmt. 382af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 383af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar/// GenerateObjCGetter - Generate an Objective-C property getter 384489034cf8bde09360e0089f401b2929597b125d8Steve Naroff/// function. The given Decl must be an ObjCImplementationDecl. @synthesize 385489034cf8bde09360e0089f401b2929597b125d8Steve Naroff/// is illegal within a category. 386fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanianvoid CodeGenFunction::GenerateObjCGetter(ObjCImplementationDecl *IMP, 387fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian const ObjCPropertyImplDecl *PID) { 388c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar ObjCIvarDecl *Ivar = PID->getPropertyIvarDecl(); 389af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar const ObjCPropertyDecl *PD = PID->getPropertyDecl(); 39015bd58842adaa4f8cca4e58047ed18e033858d9bFariborz Jahanian bool IsAtomic = 39115bd58842adaa4f8cca4e58047ed18e033858d9bFariborz Jahanian !(PD->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_nonatomic); 392af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCMethodDecl *OMD = PD->getGetterMethodDecl(); 393af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar assert(OMD && "Invalid call to generate getter (empty method)"); 3948d3f8979e46f9d0b8735566eabe471db0e1e0e53Devang Patel StartObjCMethod(OMD, IMP->getClassInterface(), PID->getLocStart()); 39515bd58842adaa4f8cca4e58047ed18e033858d9bFariborz Jahanian 396c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar // Determine if we should use an objc_getProperty call for 397447d7aeb9499d7ade42be7d63fa03b37b1d2fc09Fariborz Jahanian // this. Non-atomic properties are directly evaluated. 398447d7aeb9499d7ade42be7d63fa03b37b1d2fc09Fariborz Jahanian // atomic 'copy' and 'retain' properties are also directly 399447d7aeb9499d7ade42be7d63fa03b37b1d2fc09Fariborz Jahanian // evaluated in gc-only mode. 400c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar if (CGM.getLangOptions().getGCMode() != LangOptions::GCOnly && 40115bd58842adaa4f8cca4e58047ed18e033858d9bFariborz Jahanian IsAtomic && 402447d7aeb9499d7ade42be7d63fa03b37b1d2fc09Fariborz Jahanian (PD->getSetterKind() == ObjCPropertyDecl::Copy || 403447d7aeb9499d7ade42be7d63fa03b37b1d2fc09Fariborz Jahanian PD->getSetterKind() == ObjCPropertyDecl::Retain)) { 4041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *GetPropertyFn = 405c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar CGM.getObjCRuntime().GetPropertyGetFunction(); 4061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 407c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar if (!GetPropertyFn) { 408c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar CGM.ErrorUnsupported(PID, "Obj-C getter requiring atomic copy"); 409c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar FinishFunction(); 410c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar return; 411c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar } 412c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar 413c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar // Return (ivar-type) objc_getProperty((id) self, _cmd, offset, true). 414c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar // FIXME: Can't this be simpler? This might even be worse than the 415c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar // corresponding gcc code. 416c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar CodeGenTypes &Types = CGM.getTypes(); 417c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar ValueDecl *Cmd = OMD->getCmdDecl(); 418c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar llvm::Value *CmdVal = Builder.CreateLoad(LocalDeclMap[Cmd], "cmd"); 419c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar QualType IdTy = getContext().getObjCIdType(); 4201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *SelfAsId = 421c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar Builder.CreateBitCast(LoadObjCSelf(), Types.ConvertType(IdTy)); 422fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian llvm::Value *Offset = EmitIvarOffset(IMP->getClassInterface(), Ivar); 423c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar llvm::Value *True = 4244a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::ConstantInt::get(Types.ConvertType(getContext().BoolTy), 1); 425c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar CallArgList Args; 42604c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman Args.add(RValue::get(SelfAsId), IdTy); 42704c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman Args.add(RValue::get(CmdVal), Cmd->getType()); 42804c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman Args.add(RValue::get(Offset), getContext().getPointerDiffType()); 42904c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman Args.add(RValue::get(True), getContext().BoolTy); 430e4be5a66072f7c7618071284c8d2a9c6d8e691cfDaniel Dunbar // FIXME: We shouldn't need to get the function info here, the 431e4be5a66072f7c7618071284c8d2a9c6d8e691cfDaniel Dunbar // runtime already should have computed it to build the function. 43204a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall RValue RV = EmitCall(Types.getFunctionInfo(PD->getType(), Args, 433264ba48dc98f3f843935a485d5b086f7e0fdc4f1Rafael Espindola FunctionType::ExtInfo()), 434f3c47c9525153aea2de0ec4bd615b9cf2d81c103Anders Carlsson GetPropertyFn, ReturnValueSlot(), Args); 435c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar // We need to fix the type here. Ivars with copy & retain are 436c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar // always objects so we don't need to worry about complex or 437c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar // aggregates. 4381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump RV = RValue::get(Builder.CreateBitCast(RV.getScalarVal(), 439c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar Types.ConvertType(PD->getType()))); 440c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar EmitReturnOfRValue(RV, PD->getType()); 441f85e193739c953358c865005855253af4f68a497John McCall 442f85e193739c953358c865005855253af4f68a497John McCall // objc_getProperty does an autorelease, so we should suppress ours. 443f85e193739c953358c865005855253af4f68a497John McCall AutoreleaseResult = false; 444c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar } else { 4452846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian const llvm::Triple &Triple = getContext().Target.getTriple(); 4462846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian QualType IVART = Ivar->getType(); 4472846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian if (IsAtomic && 4482846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian IVART->isScalarType() && 4492846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian (Triple.getArch() == llvm::Triple::arm || 4502846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian Triple.getArch() == llvm::Triple::thumb) && 4512846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian (getContext().getTypeSizeInChars(IVART) 4522846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian > CharUnits::fromQuantity(4)) && 4532846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian CGM.getObjCRuntime().GetGetStructFunction()) { 4542846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian GenerateObjCGetterBody(Ivar, true, false); 4552846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian } 4561d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian else if (IsAtomic && 4571d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian (IVART->isScalarType() && !IVART->isRealFloatingType()) && 4581d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian Triple.getArch() == llvm::Triple::x86 && 4591d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian (getContext().getTypeSizeInChars(IVART) 4601d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian > CharUnits::fromQuantity(4)) && 4611d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian CGM.getObjCRuntime().GetGetStructFunction()) { 4621d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian GenerateObjCGetterBody(Ivar, true, false); 4631d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian } 4641d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian else if (IsAtomic && 4651d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian (IVART->isScalarType() && !IVART->isRealFloatingType()) && 4661d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian Triple.getArch() == llvm::Triple::x86_64 && 4671d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian (getContext().getTypeSizeInChars(IVART) 4681d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian > CharUnits::fromQuantity(8)) && 4691d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian CGM.getObjCRuntime().GetGetStructFunction()) { 4701d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian GenerateObjCGetterBody(Ivar, true, false); 4711d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian } 4722846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian else if (IVART->isAnyComplexType()) { 47397a73cd8e2b81f5aed9f59e07e7787e3fd3b8d00Fariborz Jahanian LValue LV = EmitLValueForIvar(TypeOfSelfObject(), LoadObjCSelf(), 47497a73cd8e2b81f5aed9f59e07e7787e3fd3b8d00Fariborz Jahanian Ivar, 0); 4751b23fe61cf4437668280212d0ad6cb7196f51529Fariborz Jahanian ComplexPairTy Pair = LoadComplexFromAddr(LV.getAddress(), 4761b23fe61cf4437668280212d0ad6cb7196f51529Fariborz Jahanian LV.isVolatileQualified()); 4771b23fe61cf4437668280212d0ad6cb7196f51529Fariborz Jahanian StoreComplexToAddr(Pair, ReturnValue, LV.isVolatileQualified()); 4781b23fe61cf4437668280212d0ad6cb7196f51529Fariborz Jahanian } 4792846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian else if (hasAggregateLLVMType(IVART)) { 48015bd58842adaa4f8cca4e58047ed18e033858d9bFariborz Jahanian bool IsStrong = false; 4815fb6509b402d052aa661b15bfa5b71b7cdd7d0e9Fariborz Jahanian if ((IsStrong = IvarTypeWithAggrGCObjects(IVART)) 4820b2bd47151ee9205ad6c66d1ffb921918106088aFariborz Jahanian && CurFnInfo->getReturnInfo().getKind() == ABIArgInfo::Indirect 4838fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall && CGM.getObjCRuntime().GetGetStructFunction()) { 4842846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian GenerateObjCGetterBody(Ivar, IsAtomic, IsStrong); 4850b2bd47151ee9205ad6c66d1ffb921918106088aFariborz Jahanian } 48697a73cd8e2b81f5aed9f59e07e7787e3fd3b8d00Fariborz Jahanian else { 48701cb307f0b84a368cdbc0738d6680aab8ed7423fFariborz Jahanian const CXXRecordDecl *classDecl = IVART->getAsCXXRecordDecl(); 48801cb307f0b84a368cdbc0738d6680aab8ed7423fFariborz Jahanian 48901cb307f0b84a368cdbc0738d6680aab8ed7423fFariborz Jahanian if (PID->getGetterCXXConstructor() && 490023df37c27ee8035664fb62f206ca58f4e2a169dSean Hunt classDecl && !classDecl->hasTrivialDefaultConstructor()) { 49197a73cd8e2b81f5aed9f59e07e7787e3fd3b8d00Fariborz Jahanian ReturnStmt *Stmt = 49297a73cd8e2b81f5aed9f59e07e7787e3fd3b8d00Fariborz Jahanian new (getContext()) ReturnStmt(SourceLocation(), 4935077c3876beeaed32280af88244e8050078619a8Douglas Gregor PID->getGetterCXXConstructor(), 4945077c3876beeaed32280af88244e8050078619a8Douglas Gregor 0); 49597a73cd8e2b81f5aed9f59e07e7787e3fd3b8d00Fariborz Jahanian EmitReturnStmt(*Stmt); 4961d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian } else if (IsAtomic && 4971d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian !IVART->isAnyComplexType() && 4981d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian Triple.getArch() == llvm::Triple::x86 && 4991d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian (getContext().getTypeSizeInChars(IVART) 5001d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian > CharUnits::fromQuantity(4)) && 5011d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian CGM.getObjCRuntime().GetGetStructFunction()) { 5021d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian GenerateObjCGetterBody(Ivar, true, false); 5031d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian } 5041d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian else if (IsAtomic && 5051d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian !IVART->isAnyComplexType() && 5061d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian Triple.getArch() == llvm::Triple::x86_64 && 5071d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian (getContext().getTypeSizeInChars(IVART) 5081d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian > CharUnits::fromQuantity(8)) && 5091d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian CGM.getObjCRuntime().GetGetStructFunction()) { 5101d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian GenerateObjCGetterBody(Ivar, true, false); 51197a73cd8e2b81f5aed9f59e07e7787e3fd3b8d00Fariborz Jahanian } 51297a73cd8e2b81f5aed9f59e07e7787e3fd3b8d00Fariborz Jahanian else { 51397a73cd8e2b81f5aed9f59e07e7787e3fd3b8d00Fariborz Jahanian LValue LV = EmitLValueForIvar(TypeOfSelfObject(), LoadObjCSelf(), 51497a73cd8e2b81f5aed9f59e07e7787e3fd3b8d00Fariborz Jahanian Ivar, 0); 5152846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian EmitAggregateCopy(ReturnValue, LV.getAddress(), IVART); 51697a73cd8e2b81f5aed9f59e07e7787e3fd3b8d00Fariborz Jahanian } 51797a73cd8e2b81f5aed9f59e07e7787e3fd3b8d00Fariborz Jahanian } 518ba3dd902d1cde09776a50c1adf2cd40bf0a15a7fJohn McCall } else { 519ba3dd902d1cde09776a50c1adf2cd40bf0a15a7fJohn McCall LValue LV = EmitLValueForIvar(TypeOfSelfObject(), LoadObjCSelf(), 520ba3dd902d1cde09776a50c1adf2cd40bf0a15a7fJohn McCall Ivar, 0); 521ba3dd902d1cde09776a50c1adf2cd40bf0a15a7fJohn McCall QualType propType = PD->getType(); 522ba3dd902d1cde09776a50c1adf2cd40bf0a15a7fJohn McCall 523ba3dd902d1cde09776a50c1adf2cd40bf0a15a7fJohn McCall llvm::Value *value; 524ba3dd902d1cde09776a50c1adf2cd40bf0a15a7fJohn McCall if (propType->isReferenceType()) { 525ba3dd902d1cde09776a50c1adf2cd40bf0a15a7fJohn McCall value = LV.getAddress(); 526ba3dd902d1cde09776a50c1adf2cd40bf0a15a7fJohn McCall } else { 527ba3dd902d1cde09776a50c1adf2cd40bf0a15a7fJohn McCall // We want to load and autoreleaseReturnValue ARC __weak ivars. 528ba3dd902d1cde09776a50c1adf2cd40bf0a15a7fJohn McCall if (LV.getQuals().getObjCLifetime() == Qualifiers::OCL_Weak) { 529ba3dd902d1cde09776a50c1adf2cd40bf0a15a7fJohn McCall value = emitARCRetainLoadOfScalar(*this, LV, IVART); 530ba3dd902d1cde09776a50c1adf2cd40bf0a15a7fJohn McCall 531ba3dd902d1cde09776a50c1adf2cd40bf0a15a7fJohn McCall // Otherwise we want to do a simple load, suppressing the 532ba3dd902d1cde09776a50c1adf2cd40bf0a15a7fJohn McCall // final autorelease. 533f85e193739c953358c865005855253af4f68a497John McCall } else { 534ba3dd902d1cde09776a50c1adf2cd40bf0a15a7fJohn McCall value = EmitLoadOfLValue(LV).getScalarVal(); 535ba3dd902d1cde09776a50c1adf2cd40bf0a15a7fJohn McCall AutoreleaseResult = false; 53614086764e340267e17803d0f8243070ffae2c76eFariborz Jahanian } 537f85e193739c953358c865005855253af4f68a497John McCall 538ba3dd902d1cde09776a50c1adf2cd40bf0a15a7fJohn McCall value = Builder.CreateBitCast(value, ConvertType(propType)); 539ba3dd902d1cde09776a50c1adf2cd40bf0a15a7fJohn McCall } 540ba3dd902d1cde09776a50c1adf2cd40bf0a15a7fJohn McCall 541ba3dd902d1cde09776a50c1adf2cd40bf0a15a7fJohn McCall EmitReturnOfRValue(RValue::get(value), propType); 542ed1d29d62595a83ccf6ef23eb2759d355206df2eFariborz Jahanian } 543c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar } 544af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 545af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar FinishFunction(); 546af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar} 547af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 5482846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanianvoid CodeGenFunction::GenerateObjCAtomicSetterBody(ObjCMethodDecl *OMD, 5492846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian ObjCIvarDecl *Ivar) { 5502846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian // objc_copyStruct (&structIvar, &Arg, 5512846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian // sizeof (struct something), true, false); 5522846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian llvm::Value *GetCopyStructFn = 5532846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian CGM.getObjCRuntime().GetSetStructFunction(); 5542846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian CodeGenTypes &Types = CGM.getTypes(); 5552846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian CallArgList Args; 5562846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian LValue LV = EmitLValueForIvar(TypeOfSelfObject(), LoadObjCSelf(), Ivar, 0); 5572846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian RValue RV = 5582846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian RValue::get(Builder.CreateBitCast(LV.getAddress(), 5592846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian Types.ConvertType(getContext().VoidPtrTy))); 56004c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman Args.add(RV, getContext().VoidPtrTy); 5612846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian llvm::Value *Arg = LocalDeclMap[*OMD->param_begin()]; 5622846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian llvm::Value *ArgAsPtrTy = 5632846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian Builder.CreateBitCast(Arg, 5642846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian Types.ConvertType(getContext().VoidPtrTy)); 5652846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian RV = RValue::get(ArgAsPtrTy); 56604c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman Args.add(RV, getContext().VoidPtrTy); 5672846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian // sizeof (Type of Ivar) 5682846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian CharUnits Size = getContext().getTypeSizeInChars(Ivar->getType()); 5692846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian llvm::Value *SizeVal = 5702846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian llvm::ConstantInt::get(Types.ConvertType(getContext().LongTy), 5712846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian Size.getQuantity()); 57204c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman Args.add(RValue::get(SizeVal), getContext().LongTy); 5732846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian llvm::Value *True = 5742846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian llvm::ConstantInt::get(Types.ConvertType(getContext().BoolTy), 1); 57504c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman Args.add(RValue::get(True), getContext().BoolTy); 5762846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian llvm::Value *False = 5772846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian llvm::ConstantInt::get(Types.ConvertType(getContext().BoolTy), 0); 57804c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman Args.add(RValue::get(False), getContext().BoolTy); 5792846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian EmitCall(Types.getFunctionInfo(getContext().VoidTy, Args, 5802846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian FunctionType::ExtInfo()), 5812846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian GetCopyStructFn, ReturnValueSlot(), Args); 5822846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian} 5832846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian 58401cb307f0b84a368cdbc0738d6680aab8ed7423fFariborz Jahanianstatic bool 58501cb307f0b84a368cdbc0738d6680aab8ed7423fFariborz JahanianIvarAssignHasTrvialAssignment(const ObjCPropertyImplDecl *PID, 58601cb307f0b84a368cdbc0738d6680aab8ed7423fFariborz Jahanian QualType IvarT) { 58701cb307f0b84a368cdbc0738d6680aab8ed7423fFariborz Jahanian bool HasTrvialAssignment = true; 58801cb307f0b84a368cdbc0738d6680aab8ed7423fFariborz Jahanian if (PID->getSetterCXXAssignment()) { 58901cb307f0b84a368cdbc0738d6680aab8ed7423fFariborz Jahanian const CXXRecordDecl *classDecl = IvarT->getAsCXXRecordDecl(); 59001cb307f0b84a368cdbc0738d6680aab8ed7423fFariborz Jahanian HasTrvialAssignment = 59101cb307f0b84a368cdbc0738d6680aab8ed7423fFariborz Jahanian (!classDecl || classDecl->hasTrivialCopyAssignment()); 59201cb307f0b84a368cdbc0738d6680aab8ed7423fFariborz Jahanian } 59301cb307f0b84a368cdbc0738d6680aab8ed7423fFariborz Jahanian return HasTrvialAssignment; 59401cb307f0b84a368cdbc0738d6680aab8ed7423fFariborz Jahanian} 59501cb307f0b84a368cdbc0738d6680aab8ed7423fFariborz Jahanian 596af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar/// GenerateObjCSetter - Generate an Objective-C property setter 597489034cf8bde09360e0089f401b2929597b125d8Steve Naroff/// function. The given Decl must be an ObjCImplementationDecl. @synthesize 598489034cf8bde09360e0089f401b2929597b125d8Steve Naroff/// is illegal within a category. 599fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanianvoid CodeGenFunction::GenerateObjCSetter(ObjCImplementationDecl *IMP, 600fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian const ObjCPropertyImplDecl *PID) { 60186957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar ObjCIvarDecl *Ivar = PID->getPropertyIvarDecl(); 602af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar const ObjCPropertyDecl *PD = PID->getPropertyDecl(); 603af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar ObjCMethodDecl *OMD = PD->getSetterMethodDecl(); 604af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar assert(OMD && "Invalid call to generate setter (empty method)"); 6058d3f8979e46f9d0b8735566eabe471db0e1e0e53Devang Patel StartObjCMethod(OMD, IMP->getClassInterface(), PID->getLocStart()); 6061d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian const llvm::Triple &Triple = getContext().Target.getTriple(); 6071d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian QualType IVART = Ivar->getType(); 60886957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar bool IsCopy = PD->getSetterKind() == ObjCPropertyDecl::Copy; 6091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool IsAtomic = 61086957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar !(PD->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_nonatomic); 61186957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar 61286957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar // Determine if we should use an objc_setProperty call for 61386957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar // this. Properties with 'copy' semantics always use it, as do 61486957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar // non-atomic properties with 'release' semantics as long as we are 61586957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar // not in gc-only mode. 61686957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar if (IsCopy || 61786957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar (CGM.getLangOptions().getGCMode() != LangOptions::GCOnly && 61886957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar PD->getSetterKind() == ObjCPropertyDecl::Retain)) { 6191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *SetPropertyFn = 62086957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar CGM.getObjCRuntime().GetPropertySetFunction(); 6211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 62286957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar if (!SetPropertyFn) { 62386957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar CGM.ErrorUnsupported(PID, "Obj-C getter requiring atomic copy"); 62486957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar FinishFunction(); 62586957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar return; 62686957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar } 6271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Emit objc_setProperty((id) self, _cmd, offset, arg, 62986957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar // <is-atomic>, <is-copy>). 63086957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar // FIXME: Can't this be simpler? This might even be worse than the 63186957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar // corresponding gcc code. 63286957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar CodeGenTypes &Types = CGM.getTypes(); 63386957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar ValueDecl *Cmd = OMD->getCmdDecl(); 63486957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar llvm::Value *CmdVal = Builder.CreateLoad(LocalDeclMap[Cmd], "cmd"); 63586957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar QualType IdTy = getContext().getObjCIdType(); 6361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *SelfAsId = 63786957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar Builder.CreateBitCast(LoadObjCSelf(), Types.ConvertType(IdTy)); 638fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian llvm::Value *Offset = EmitIvarOffset(IMP->getClassInterface(), Ivar); 63989951a86b594513c2a013532ed45d197413b1087Chris Lattner llvm::Value *Arg = LocalDeclMap[*OMD->param_begin()]; 6401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *ArgAsId = 64186957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar Builder.CreateBitCast(Builder.CreateLoad(Arg, "arg"), 64286957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar Types.ConvertType(IdTy)); 64386957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar llvm::Value *True = 6444a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::ConstantInt::get(Types.ConvertType(getContext().BoolTy), 1); 64586957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar llvm::Value *False = 6464a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::ConstantInt::get(Types.ConvertType(getContext().BoolTy), 0); 64786957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar CallArgList Args; 64804c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman Args.add(RValue::get(SelfAsId), IdTy); 64904c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman Args.add(RValue::get(CmdVal), Cmd->getType()); 65004c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman Args.add(RValue::get(Offset), getContext().getPointerDiffType()); 65104c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman Args.add(RValue::get(ArgAsId), IdTy); 65204c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman Args.add(RValue::get(IsAtomic ? True : False), getContext().BoolTy); 65304c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman Args.add(RValue::get(IsCopy ? True : False), getContext().BoolTy); 654f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump // FIXME: We shouldn't need to get the function info here, the runtime 655f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump // already should have computed it to build the function. 65604a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall EmitCall(Types.getFunctionInfo(getContext().VoidTy, Args, 657264ba48dc98f3f843935a485d5b086f7e0fdc4f1Rafael Espindola FunctionType::ExtInfo()), 658264ba48dc98f3f843935a485d5b086f7e0fdc4f1Rafael Espindola SetPropertyFn, 659f3c47c9525153aea2de0ec4bd615b9cf2d81c103Anders Carlsson ReturnValueSlot(), Args); 6601d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian } else if (IsAtomic && hasAggregateLLVMType(IVART) && 6611d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian !IVART->isAnyComplexType() && 66201cb307f0b84a368cdbc0738d6680aab8ed7423fFariborz Jahanian IvarAssignHasTrvialAssignment(PID, IVART) && 6631d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian ((Triple.getArch() == llvm::Triple::x86 && 6641d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian (getContext().getTypeSizeInChars(IVART) 6651d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian > CharUnits::fromQuantity(4))) || 6661d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian (Triple.getArch() == llvm::Triple::x86_64 && 6671d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian (getContext().getTypeSizeInChars(IVART) 6681d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian > CharUnits::fromQuantity(8)))) 6698fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall && CGM.getObjCRuntime().GetSetStructFunction()) { 6701d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian // objc_copyStruct (&structIvar, &Arg, 6711d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian // sizeof (struct something), true, false); 6722846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian GenerateObjCAtomicSetterBody(OMD, Ivar); 67397a73cd8e2b81f5aed9f59e07e7787e3fd3b8d00Fariborz Jahanian } else if (PID->getSetterCXXAssignment()) { 6742a41637a995affa1563f4d82a8b026e326a2faa0John McCall EmitIgnoredExpr(PID->getSetterCXXAssignment()); 67586957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar } else { 6762846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian if (IsAtomic && 6772846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian IVART->isScalarType() && 6782846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian (Triple.getArch() == llvm::Triple::arm || 6792846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian Triple.getArch() == llvm::Triple::thumb) && 6802846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian (getContext().getTypeSizeInChars(IVART) 6812846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian > CharUnits::fromQuantity(4)) && 6822846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian CGM.getObjCRuntime().GetGetStructFunction()) { 6832846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian GenerateObjCAtomicSetterBody(OMD, Ivar); 6841d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian } 6851d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian else if (IsAtomic && 6861d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian (IVART->isScalarType() && !IVART->isRealFloatingType()) && 6871d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian Triple.getArch() == llvm::Triple::x86 && 6881d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian (getContext().getTypeSizeInChars(IVART) 6891d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian > CharUnits::fromQuantity(4)) && 6901d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian CGM.getObjCRuntime().GetGetStructFunction()) { 6911d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian GenerateObjCAtomicSetterBody(OMD, Ivar); 6921d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian } 6931d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian else if (IsAtomic && 6941d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian (IVART->isScalarType() && !IVART->isRealFloatingType()) && 6951d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian Triple.getArch() == llvm::Triple::x86_64 && 6961d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian (getContext().getTypeSizeInChars(IVART) 6971d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian > CharUnits::fromQuantity(8)) && 6981d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian CGM.getObjCRuntime().GetGetStructFunction()) { 6991d3a61a5ab0952ebf1f829bd2e48bc09bb332189Fariborz Jahanian GenerateObjCAtomicSetterBody(OMD, Ivar); 7002846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian } 7012846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian else { 7022846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian // FIXME: Find a clean way to avoid AST node creation. 7038d3f8979e46f9d0b8735566eabe471db0e1e0e53Devang Patel SourceLocation Loc = PID->getLocStart(); 7042846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian ValueDecl *Self = OMD->getSelfDecl(); 7052846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian ObjCIvarDecl *Ivar = PID->getPropertyIvarDecl(); 7062846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian DeclRefExpr Base(Self, Self->getType(), VK_RValue, Loc); 7072846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian ParmVarDecl *ArgDecl = *OMD->param_begin(); 70814086764e340267e17803d0f8243070ffae2c76eFariborz Jahanian QualType T = ArgDecl->getType(); 70914086764e340267e17803d0f8243070ffae2c76eFariborz Jahanian if (T->isReferenceType()) 71014086764e340267e17803d0f8243070ffae2c76eFariborz Jahanian T = cast<ReferenceType>(T)->getPointeeType(); 71114086764e340267e17803d0f8243070ffae2c76eFariborz Jahanian DeclRefExpr Arg(ArgDecl, T, VK_LValue, Loc); 7122846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian ObjCIvarRefExpr IvarRef(Ivar, Ivar->getType(), Loc, &Base, true, true); 71345e8423d7dcea657c14c55347e8a30ac904d7501Daniel Dunbar 7142846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian // The property type can differ from the ivar type in some situations with 7152846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian // Objective-C pointer types, we can always bit cast the RHS in these cases. 7162846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian if (getContext().getCanonicalType(Ivar->getType()) != 7172846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian getContext().getCanonicalType(ArgDecl->getType())) { 7182846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian ImplicitCastExpr ArgCasted(ImplicitCastExpr::OnStack, 7192846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian Ivar->getType(), CK_BitCast, &Arg, 7202846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian VK_RValue); 7212846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian BinaryOperator Assign(&IvarRef, &ArgCasted, BO_Assign, 7222846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian Ivar->getType(), VK_RValue, OK_Ordinary, Loc); 7232846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian EmitStmt(&Assign); 7242846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian } else { 7252846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian BinaryOperator Assign(&IvarRef, &Arg, BO_Assign, 7262846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian Ivar->getType(), VK_RValue, OK_Ordinary, Loc); 7272846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian EmitStmt(&Assign); 7282846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian } 72945e8423d7dcea657c14c55347e8a30ac904d7501Daniel Dunbar } 73086957eb200492e95a09bce1b2c76f66345468f84Daniel Dunbar } 731af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 732af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar FinishFunction(); 7334111024be81e7c0525e42dadcc126d27e5bf2425Chris Lattner} 7344111024be81e7c0525e42dadcc126d27e5bf2425Chris Lattner 735e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCallnamespace { 7369928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall struct DestroyIvar : EHScopeStack::Cleanup { 7379928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall private: 7389928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall llvm::Value *addr; 739e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall const ObjCIvarDecl *ivar; 7409928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall CodeGenFunction::Destroyer &destroyer; 7419928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall bool useEHCleanupForArray; 7429928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall public: 7439928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall DestroyIvar(llvm::Value *addr, const ObjCIvarDecl *ivar, 7449928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall CodeGenFunction::Destroyer *destroyer, 7459928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall bool useEHCleanupForArray) 7469928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall : addr(addr), ivar(ivar), destroyer(*destroyer), 7479928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall useEHCleanupForArray(useEHCleanupForArray) {} 748e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall 749ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall void Emit(CodeGenFunction &CGF, Flags flags) { 7509928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall LValue lvalue 7519928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall = CGF.EmitLValueForIvar(CGF.TypeOfSelfObject(), addr, ivar, /*CVR*/ 0); 7529928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall CGF.emitDestroy(lvalue.getAddress(), ivar->getType(), destroyer, 753ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall flags.isForNormalCleanup() && useEHCleanupForArray); 754e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall } 755e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall }; 756e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall} 757e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall 7589928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall/// Like CodeGenFunction::destroyARCStrong, but do it with a call. 7599928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCallstatic void destroyARCStrongWithStore(CodeGenFunction &CGF, 7609928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall llvm::Value *addr, 7619928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall QualType type) { 7629928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall llvm::Value *null = getNullForVariable(addr); 7639928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall CGF.EmitARCStoreStrongCall(addr, null, /*ignored*/ true); 7649928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall} 765f85e193739c953358c865005855253af4f68a497John McCall 766e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCallstatic void emitCXXDestructMethod(CodeGenFunction &CGF, 767e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall ObjCImplementationDecl *impl) { 768e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall CodeGenFunction::RunCleanupsScope scope(CGF); 769e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall 770e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall llvm::Value *self = CGF.LoadObjCSelf(); 771e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall 772db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose const ObjCInterfaceDecl *iface = impl->getClassInterface(); 773db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose for (const ObjCIvarDecl *ivar = iface->all_declared_ivar_begin(); 774e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall ivar; ivar = ivar->getNextIvar()) { 775e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall QualType type = ivar->getType(); 776e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall 777e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall // Check whether the ivar is a destructible type. 7789928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall QualType::DestructionKind dtorKind = type.isDestructedType(); 7799928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall if (!dtorKind) continue; 7809928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall 7819928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall CodeGenFunction::Destroyer *destroyer = 0; 7829928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall 7839928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall // Use a call to objc_storeStrong to destroy strong ivars, for the 7849928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall // general benefit of the tools. 7859928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall if (dtorKind == QualType::DK_objc_strong_lifetime) { 7869928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall destroyer = &destroyARCStrongWithStore; 7879928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall 7889928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall // Otherwise use the default for the destruction kind. 7899928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall } else { 7909928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall destroyer = &CGF.getDestroyer(dtorKind); 791e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall } 7929928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall 7939928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall CleanupKind cleanupKind = CGF.getCleanupKind(dtorKind); 7949928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall 7959928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall CGF.EHStack.pushCleanup<DestroyIvar>(cleanupKind, self, ivar, destroyer, 7969928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall cleanupKind & EHCleanup); 797e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall } 798e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall 799e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall assert(scope.requiresCleanups() && "nothing to do in .cxx_destruct?"); 800e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall} 801e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall 802109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanianvoid CodeGenFunction::GenerateObjCCtorDtorMethod(ObjCImplementationDecl *IMP, 803109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian ObjCMethodDecl *MD, 804109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian bool ctor) { 805109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian MD->createImplicitParams(CGM.getContext(), IMP->getClassInterface()); 8068d3f8979e46f9d0b8735566eabe471db0e1e0e53Devang Patel StartObjCMethod(MD, IMP->getClassInterface(), MD->getLocStart()); 807e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall 808e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall // Emit .cxx_construct. 809109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian if (ctor) { 810f85e193739c953358c865005855253af4f68a497John McCall // Suppress the final autorelease in ARC. 811f85e193739c953358c865005855253af4f68a497John McCall AutoreleaseResult = false; 812f85e193739c953358c865005855253af4f68a497John McCall 8135f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<CXXCtorInitializer *, 8> IvarInitializers; 814e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall for (ObjCImplementationDecl::init_const_iterator B = IMP->init_begin(), 815e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall E = IMP->init_end(); B != E; ++B) { 816e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall CXXCtorInitializer *IvarInit = (*B); 81700eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet FieldDecl *Field = IvarInit->getAnyMember(); 818109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian ObjCIvarDecl *Ivar = cast<ObjCIvarDecl>(Field); 8199b4d4fc49f30f1caa35d680702f1921afad81971Fariborz Jahanian LValue LV = EmitLValueForIvar(TypeOfSelfObject(), 8209b4d4fc49f30f1caa35d680702f1921afad81971Fariborz Jahanian LoadObjCSelf(), Ivar, 0); 821558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall EmitAggExpr(IvarInit->getInit(), AggValueSlot::forLValue(LV, true)); 822109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian } 823109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian // constructor returns 'self'. 824109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian CodeGenTypes &Types = CGM.getTypes(); 825109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian QualType IdTy(CGM.getContext().getObjCIdType()); 826109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian llvm::Value *SelfAsId = 827109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian Builder.CreateBitCast(LoadObjCSelf(), Types.ConvertType(IdTy)); 828109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian EmitReturnOfRValue(RValue::get(SelfAsId), IdTy); 829e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall 830e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall // Emit .cxx_destruct. 831bc397cf90355f17c974b0bdf3960e8fb38caf5d6Chandler Carruth } else { 832e81ac69c5da9fadfac33ee76e98d5fb558c4e389John McCall emitCXXDestructMethod(*this, IMP); 833109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian } 834109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian FinishFunction(); 835109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian} 836109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian 8370b2bd47151ee9205ad6c66d1ffb921918106088aFariborz Jahanianbool CodeGenFunction::IndirectObjCSetterArg(const CGFunctionInfo &FI) { 8380b2bd47151ee9205ad6c66d1ffb921918106088aFariborz Jahanian CGFunctionInfo::const_arg_iterator it = FI.arg_begin(); 8390b2bd47151ee9205ad6c66d1ffb921918106088aFariborz Jahanian it++; it++; 8400b2bd47151ee9205ad6c66d1ffb921918106088aFariborz Jahanian const ABIArgInfo &AI = it->info; 8410b2bd47151ee9205ad6c66d1ffb921918106088aFariborz Jahanian // FIXME. Is this sufficient check? 8420b2bd47151ee9205ad6c66d1ffb921918106088aFariborz Jahanian return (AI.getKind() == ABIArgInfo::Indirect); 8430b2bd47151ee9205ad6c66d1ffb921918106088aFariborz Jahanian} 8440b2bd47151ee9205ad6c66d1ffb921918106088aFariborz Jahanian 84515bd58842adaa4f8cca4e58047ed18e033858d9bFariborz Jahanianbool CodeGenFunction::IvarTypeWithAggrGCObjects(QualType Ty) { 84615bd58842adaa4f8cca4e58047ed18e033858d9bFariborz Jahanian if (CGM.getLangOptions().getGCMode() == LangOptions::NonGC) 84715bd58842adaa4f8cca4e58047ed18e033858d9bFariborz Jahanian return false; 84815bd58842adaa4f8cca4e58047ed18e033858d9bFariborz Jahanian if (const RecordType *FDTTy = Ty.getTypePtr()->getAs<RecordType>()) 84915bd58842adaa4f8cca4e58047ed18e033858d9bFariborz Jahanian return FDTTy->getDecl()->hasObjectMember(); 85015bd58842adaa4f8cca4e58047ed18e033858d9bFariborz Jahanian return false; 85115bd58842adaa4f8cca4e58047ed18e033858d9bFariborz Jahanian} 85215bd58842adaa4f8cca4e58047ed18e033858d9bFariborz Jahanian 853c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbarllvm::Value *CodeGenFunction::LoadObjCSelf() { 854b7ec246872b412f0e7bb9e93eacfd78cfa6adfb3Daniel Dunbar const ObjCMethodDecl *OMD = cast<ObjCMethodDecl>(CurFuncDecl); 855b7ec246872b412f0e7bb9e93eacfd78cfa6adfb3Daniel Dunbar return Builder.CreateLoad(LocalDeclMap[OMD->getSelfDecl()], "self"); 8564111024be81e7c0525e42dadcc126d27e5bf2425Chris Lattner} 8574111024be81e7c0525e42dadcc126d27e5bf2425Chris Lattner 85845012a7ef5abf1042c893f3f2fa5c23cb5485ea9Fariborz JahanianQualType CodeGenFunction::TypeOfSelfObject() { 85945012a7ef5abf1042c893f3f2fa5c23cb5485ea9Fariborz Jahanian const ObjCMethodDecl *OMD = cast<ObjCMethodDecl>(CurFuncDecl); 86045012a7ef5abf1042c893f3f2fa5c23cb5485ea9Fariborz Jahanian ImplicitParamDecl *selfDecl = OMD->getSelfDecl(); 86114108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff const ObjCObjectPointerType *PTy = cast<ObjCObjectPointerType>( 86214108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff getContext().getCanonicalType(selfDecl->getType())); 86345012a7ef5abf1042c893f3f2fa5c23cb5485ea9Fariborz Jahanian return PTy->getPointeeType(); 86445012a7ef5abf1042c893f3f2fa5c23cb5485ea9Fariborz Jahanian} 86545012a7ef5abf1042c893f3f2fa5c23cb5485ea9Fariborz Jahanian 866e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCallLValue 867e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCallCodeGenFunction::EmitObjCPropertyRefLValue(const ObjCPropertyRefExpr *E) { 868e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall // This is a special l-value that just issues sends when we load or 869e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall // store through it. 870e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall 871e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall // For certain base kinds, we need to emit the base immediately. 872e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall llvm::Value *Base; 873e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall if (E->isSuperReceiver()) 874e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall Base = LoadObjCSelf(); 875e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall else if (E->isClassReceiver()) 876e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall Base = CGM.getObjCRuntime().GetClass(Builder, E->getClassReceiver()); 877e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall else 878e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall Base = EmitScalarExpr(E->getBase()); 879e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall return LValue::MakePropertyRef(E, Base); 880e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall} 881e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall 882e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCallstatic RValue GenerateMessageSendSuper(CodeGenFunction &CGF, 883e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall ReturnValueSlot Return, 884e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall QualType ResultType, 885e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall Selector S, 886e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall llvm::Value *Receiver, 887e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall const CallArgList &CallArgs) { 888e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall const ObjCMethodDecl *OMD = cast<ObjCMethodDecl>(CGF.CurFuncDecl); 889f469557743f77918d2ca8226e2ee2888998ffd4aFariborz Jahanian bool isClassMessage = OMD->isClassMethod(); 890f469557743f77918d2ca8226e2ee2888998ffd4aFariborz Jahanian bool isCategoryImpl = isa<ObjCCategoryImplDecl>(OMD->getDeclContext()); 891e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall return CGF.CGM.getObjCRuntime() 892e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall .GenerateMessageSendSuper(CGF, Return, ResultType, 893e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall S, OMD->getClassInterface(), 894e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall isCategoryImpl, Receiver, 895e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall isClassMessage, CallArgs); 896f469557743f77918d2ca8226e2ee2888998ffd4aFariborz Jahanian} 897f469557743f77918d2ca8226e2ee2888998ffd4aFariborz Jahanian 898119a1c6c4029d30cae7b31a2826aa0ff70d01668John McCallRValue CodeGenFunction::EmitLoadOfPropertyRefLValue(LValue LV, 899119a1c6c4029d30cae7b31a2826aa0ff70d01668John McCall ReturnValueSlot Return) { 900119a1c6c4029d30cae7b31a2826aa0ff70d01668John McCall const ObjCPropertyRefExpr *E = LV.getPropertyRefExpr(); 90168af13f3ca39947e3f285f864fe3b76640fddf69Fariborz Jahanian QualType ResultType = E->getGetterResultType(); 90212f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall Selector S; 903926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor const ObjCMethodDecl *method; 90412f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall if (E->isExplicitProperty()) { 90512f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall const ObjCPropertyDecl *Property = E->getExplicitProperty(); 90612f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall S = Property->getGetterName(); 907926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor method = Property->getGetterMethodDecl(); 908b3589f44c5d295cd41de2c83f3475116835eeebdMike Stump } else { 909926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor method = E->getImplicitPropertyGetter(); 910926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor S = method->getSelector(); 9115daf570d0ce027e18ed5f9d66e6b2a14a40b720dFariborz Jahanian } 91212f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall 913e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall llvm::Value *Receiver = LV.getPropertyRefBaseAddr(); 914e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall 915f85e193739c953358c865005855253af4f68a497John McCall if (CGM.getLangOptions().ObjCAutoRefCount) { 916f85e193739c953358c865005855253af4f68a497John McCall QualType receiverType; 917f85e193739c953358c865005855253af4f68a497John McCall if (E->isSuperReceiver()) 918f85e193739c953358c865005855253af4f68a497John McCall receiverType = E->getSuperReceiverType(); 919f85e193739c953358c865005855253af4f68a497John McCall else if (E->isClassReceiver()) 920f85e193739c953358c865005855253af4f68a497John McCall receiverType = getContext().getObjCClassType(); 921f85e193739c953358c865005855253af4f68a497John McCall else 922f85e193739c953358c865005855253af4f68a497John McCall receiverType = E->getBase()->getType(); 923f85e193739c953358c865005855253af4f68a497John McCall } 924f85e193739c953358c865005855253af4f68a497John McCall 925e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall // Accesses to 'super' follow a different code path. 92612f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall if (E->isSuperReceiver()) 927926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor return AdjustRelatedResultType(*this, E, method, 928926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor GenerateMessageSendSuper(*this, Return, 929926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor ResultType, 930926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor S, Receiver, 931926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor CallArgList())); 932119a1c6c4029d30cae7b31a2826aa0ff70d01668John McCall const ObjCInterfaceDecl *ReceiverClass 933119a1c6c4029d30cae7b31a2826aa0ff70d01668John McCall = (E->isClassReceiver() ? E->getClassReceiver() : 0); 934926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor return AdjustRelatedResultType(*this, E, method, 935f85e193739c953358c865005855253af4f68a497John McCall CGM.getObjCRuntime(). 936f85e193739c953358c865005855253af4f68a497John McCall GenerateMessageSend(*this, Return, ResultType, S, 937f85e193739c953358c865005855253af4f68a497John McCall Receiver, CallArgList(), ReceiverClass)); 9389c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar} 9399c3fc703b29a31d40bcf5027dbb4784dd393804eDaniel Dunbar 940119a1c6c4029d30cae7b31a2826aa0ff70d01668John McCallvoid CodeGenFunction::EmitStoreThroughPropertyRefLValue(RValue Src, 941119a1c6c4029d30cae7b31a2826aa0ff70d01668John McCall LValue Dst) { 942119a1c6c4029d30cae7b31a2826aa0ff70d01668John McCall const ObjCPropertyRefExpr *E = Dst.getPropertyRefExpr(); 94312f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall Selector S = E->getSetterSelector(); 94468af13f3ca39947e3f285f864fe3b76640fddf69Fariborz Jahanian QualType ArgType = E->getSetterArgType(); 94568af13f3ca39947e3f285f864fe3b76640fddf69Fariborz Jahanian 946b19c76e857d21b722d0a207cb45b26d7cb20a73fFariborz Jahanian // FIXME. Other than scalars, AST is not adequate for setter and 947b19c76e857d21b722d0a207cb45b26d7cb20a73fFariborz Jahanian // getter type mismatches which require conversion. 948b19c76e857d21b722d0a207cb45b26d7cb20a73fFariborz Jahanian if (Src.isScalar()) { 949b19c76e857d21b722d0a207cb45b26d7cb20a73fFariborz Jahanian llvm::Value *SrcVal = Src.getScalarVal(); 950b19c76e857d21b722d0a207cb45b26d7cb20a73fFariborz Jahanian QualType DstType = getContext().getCanonicalType(ArgType); 9512acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *DstTy = ConvertType(DstType); 952b19c76e857d21b722d0a207cb45b26d7cb20a73fFariborz Jahanian if (SrcVal->getType() != DstTy) 953b19c76e857d21b722d0a207cb45b26d7cb20a73fFariborz Jahanian Src = 954b19c76e857d21b722d0a207cb45b26d7cb20a73fFariborz Jahanian RValue::get(EmitScalarConversion(SrcVal, E->getType(), DstType)); 955b19c76e857d21b722d0a207cb45b26d7cb20a73fFariborz Jahanian } 956b19c76e857d21b722d0a207cb45b26d7cb20a73fFariborz Jahanian 957e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall CallArgList Args; 95804c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman Args.add(Src, ArgType); 959e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall 960e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall llvm::Value *Receiver = Dst.getPropertyRefBaseAddr(); 961e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall QualType ResultType = getContext().VoidTy; 962e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall 96312f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall if (E->isSuperReceiver()) { 964e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall GenerateMessageSendSuper(*this, ReturnValueSlot(), 965e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall ResultType, S, Receiver, Args); 96612f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall return; 96712f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall } 96812f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall 969119a1c6c4029d30cae7b31a2826aa0ff70d01668John McCall const ObjCInterfaceDecl *ReceiverClass 970119a1c6c4029d30cae7b31a2826aa0ff70d01668John McCall = (E->isClassReceiver() ? E->getClassReceiver() : 0); 97112f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall 97212f78a6741a4cb3d904340f8d3d2714568b50e7aJohn McCall CGM.getObjCRuntime().GenerateMessageSend(*this, ReturnValueSlot(), 973e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall ResultType, S, Receiver, Args, 974e68b9842d2d6adc2c72c81c845a2c68e58d9d3a4John McCall ReceiverClass); 97585c59edda02df48fae8dc85049743319bc6e7e89Daniel Dunbar} 97685c59edda02df48fae8dc85049743319bc6e7e89Daniel Dunbar 97774391b48b4791cded373683a3baf67314f358d50Chris Lattnervoid CodeGenFunction::EmitObjCForCollectionStmt(const ObjCForCollectionStmt &S){ 9781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Constant *EnumerationMutationFn = 979c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar CGM.getObjCRuntime().EnumerationMutationFunction(); 9801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 981c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar if (!EnumerationMutationFn) { 982c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar CGM.ErrorUnsupported(&S, "Obj-C fast enumeration for this runtime"); 983c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar return; 984c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar } 985c1cf4a579f8a0a77719deedc1b8f850b77d36ecfDaniel Dunbar 986bcbd03ac0ac0890a436e1a179d3a285e914d41faDevang Patel CGDebugInfo *DI = getDebugInfo(); 987bcbd03ac0ac0890a436e1a179d3a285e914d41faDevang Patel if (DI) { 988bcbd03ac0ac0890a436e1a179d3a285e914d41faDevang Patel DI->setLocation(S.getSourceRange().getBegin()); 989bcbd03ac0ac0890a436e1a179d3a285e914d41faDevang Patel DI->EmitRegionStart(Builder); 990bcbd03ac0ac0890a436e1a179d3a285e914d41faDevang Patel } 991bcbd03ac0ac0890a436e1a179d3a285e914d41faDevang Patel 9929d99f2db9bccc1664d6bbf1fc5346bab293ec0c3Devang Patel // The local variable comes into scope immediately. 9939d99f2db9bccc1664d6bbf1fc5346bab293ec0c3Devang Patel AutoVarEmission variable = AutoVarEmission::invalid(); 9949d99f2db9bccc1664d6bbf1fc5346bab293ec0c3Devang Patel if (const DeclStmt *SD = dyn_cast<DeclStmt>(S.getElement())) 9959d99f2db9bccc1664d6bbf1fc5346bab293ec0c3Devang Patel variable = EmitAutoVarAlloca(*cast<VarDecl>(SD->getSingleDecl())); 9969d99f2db9bccc1664d6bbf1fc5346bab293ec0c3Devang Patel 997d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall JumpDest LoopEnd = getJumpDestInCurrentScope("forcoll.end"); 998d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall JumpDest AfterBody = getJumpDestInCurrentScope("forcoll.next"); 9991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1000f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson // Fast enumeration state. 1001f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson QualType StateTy = getContext().getObjCFastEnumerationStateType(); 1002195337d2e5d4625ae9dc1328c7cdbc7115b0261bDaniel Dunbar llvm::Value *StatePtr = CreateMemTemp(StateTy, "state.ptr"); 10031884eb0b5c55edda4893ddec45e7dbad79758782Anders Carlsson EmitNullInitialization(StatePtr, StateTy); 10041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1005f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson // Number of elements in the items array. 10062abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson static const unsigned NumItems = 16; 10071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1008d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // Fetch the countByEnumeratingWithState:objects:count: selector. 1009ad4688669579d5d7b025137a095be66936d7ea31Benjamin Kramer IdentifierInfo *II[] = { 1010ad4688669579d5d7b025137a095be66936d7ea31Benjamin Kramer &CGM.getContext().Idents.get("countByEnumeratingWithState"), 1011ad4688669579d5d7b025137a095be66936d7ea31Benjamin Kramer &CGM.getContext().Idents.get("objects"), 1012ad4688669579d5d7b025137a095be66936d7ea31Benjamin Kramer &CGM.getContext().Idents.get("count") 1013ad4688669579d5d7b025137a095be66936d7ea31Benjamin Kramer }; 1014ad4688669579d5d7b025137a095be66936d7ea31Benjamin Kramer Selector FastEnumSel = 1015ad4688669579d5d7b025137a095be66936d7ea31Benjamin Kramer CGM.getContext().Selectors.getSelector(llvm::array_lengthof(II), &II[0]); 1016f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson 1017f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson QualType ItemsTy = 1018f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson getContext().getConstantArrayType(getContext().getObjCIdType(), 10191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::APInt(32, NumItems), 1020f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson ArrayType::Normal, 0); 1021195337d2e5d4625ae9dc1328c7cdbc7115b0261bDaniel Dunbar llvm::Value *ItemsPtr = CreateMemTemp(ItemsTy, "items.ptr"); 10221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1023d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // Emit the collection pointer. 1024f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson llvm::Value *Collection = EmitScalarExpr(S.getCollection()); 10251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1026d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // Send it our message: 1027f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson CallArgList Args; 1028d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall 1029d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // The first argument is a temporary of the enumeration-state type. 103004c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman Args.add(RValue::get(StatePtr), getContext().getPointerType(StateTy)); 10311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1032d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // The second argument is a temporary array with space for NumItems 1033d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // pointers. We'll actually be loading elements from the array 1034d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // pointer written into the control state; this buffer is so that 1035d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // collections that *aren't* backed by arrays can still queue up 1036d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // batches of elements. 103704c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman Args.add(RValue::get(ItemsPtr), getContext().getPointerType(ItemsTy)); 10381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1039d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // The third argument is the capacity of that temporary array. 10402acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *UnsignedLongLTy = ConvertType(getContext().UnsignedLongTy); 10414a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::Constant *Count = llvm::ConstantInt::get(UnsignedLongLTy, NumItems); 104204c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman Args.add(RValue::get(Count), getContext().UnsignedLongTy); 10431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1044d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // Start the enumeration. 10451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump RValue CountRV = 1046ef072fd2f3347cfd857d6eb787b245b950771430John McCall CGM.getObjCRuntime().GenerateMessageSend(*this, ReturnValueSlot(), 1047f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson getContext().UnsignedLongTy, 1048f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson FastEnumSel, 1049c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall Collection, Args); 1050f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson 1051d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // The initial number of objects that were returned in the buffer. 1052d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall llvm::Value *initialBufferLimit = CountRV.getScalarVal(); 10531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1054d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall llvm::BasicBlock *EmptyBB = createBasicBlock("forcoll.empty"); 1055d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall llvm::BasicBlock *LoopInitBB = createBasicBlock("forcoll.loopinit"); 1056f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson 1057d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall llvm::Value *zero = llvm::Constant::getNullValue(UnsignedLongLTy); 1058f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson 1059d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // If the limit pointer was zero to begin with, the collection is 1060d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // empty; skip all this. 1061d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall Builder.CreateCondBr(Builder.CreateICmpEQ(initialBufferLimit, zero, "iszero"), 1062d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall EmptyBB, LoopInitBB); 10631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1064d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // Otherwise, initialize the loop. 1065d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall EmitBlock(LoopInitBB); 10661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1067d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // Save the initial mutations value. This is the value at an 1068d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // address that was written into the state object by 1069d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // countByEnumeratingWithState:objects:count:. 10701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *StateMutationsPtrPtr = 10712abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson Builder.CreateStructGEP(StatePtr, 2, "mutationsptr.ptr"); 10721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *StateMutationsPtr = Builder.CreateLoad(StateMutationsPtrPtr, 10732abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson "mutationsptr"); 10741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1075d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall llvm::Value *initialMutations = 1076d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall Builder.CreateLoad(StateMutationsPtr, "forcoll.initial-mutations"); 10771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1078d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // Start looping. This is the point we return to whenever we have a 1079d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // fresh, non-empty batch of objects. 1080d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall llvm::BasicBlock *LoopBodyBB = createBasicBlock("forcoll.loopbody"); 1081d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall EmitBlock(LoopBodyBB); 10821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1083d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // The current index into the buffer. 1084bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *index = Builder.CreatePHI(UnsignedLongLTy, 3, "forcoll.index"); 1085d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall index->addIncoming(zero, LoopInitBB); 1086f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson 1087d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // The current buffer size. 1088bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *count = Builder.CreatePHI(UnsignedLongLTy, 3, "forcoll.count"); 1089d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall count->addIncoming(initialBufferLimit, LoopInitBB); 1090f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson 1091d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // Check whether the mutations value has changed from where it was 1092d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // at start. StateMutationsPtr should actually be invariant between 1093d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // refreshes. 10942abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson StateMutationsPtr = Builder.CreateLoad(StateMutationsPtrPtr, "mutationsptr"); 1095d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall llvm::Value *currentMutations 1096d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall = Builder.CreateLoad(StateMutationsPtr, "statemutations"); 10971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1098d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall llvm::BasicBlock *WasMutatedBB = createBasicBlock("forcoll.mutated"); 1099361cf980a7d976ef11a37b49567412b6b63a89d7Dan Gohman llvm::BasicBlock *WasNotMutatedBB = createBasicBlock("forcoll.notmutated"); 11001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1101d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall Builder.CreateCondBr(Builder.CreateICmpEQ(currentMutations, initialMutations), 1102d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall WasNotMutatedBB, WasMutatedBB); 11031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1104d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // If so, call the enumeration-mutation function. 1105d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall EmitBlock(WasMutatedBB); 11062abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson llvm::Value *V = 11071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Builder.CreateBitCast(Collection, 11082abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson ConvertType(getContext().getObjCIdType()), 11092abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson "tmp"); 11102b2105e92fc77016992dae3f117f526e73af5ea9Daniel Dunbar CallArgList Args2; 111104c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman Args2.add(RValue::get(V), getContext().getObjCIdType()); 1112f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump // FIXME: We shouldn't need to get the function info here, the runtime already 1113f5408fe484495ee4efbdd709c8a2c2fdbbbdb328Mike Stump // should have computed it to build the function. 111404a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall EmitCall(CGM.getTypes().getFunctionInfo(getContext().VoidTy, Args2, 1115264ba48dc98f3f843935a485d5b086f7e0fdc4f1Rafael Espindola FunctionType::ExtInfo()), 1116f3c47c9525153aea2de0ec4bd615b9cf2d81c103Anders Carlsson EnumerationMutationFn, ReturnValueSlot(), Args2); 11171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1118d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // Otherwise, or if the mutation function returns, just continue. 1119d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall EmitBlock(WasNotMutatedBB); 11201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1121d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // Initialize the element variable. 1122d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall RunCleanupsScope elementVariableScope(*this); 112357b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall bool elementIsVariable; 1124d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall LValue elementLValue; 1125d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall QualType elementType; 1126d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall if (const DeclStmt *SD = dyn_cast<DeclStmt>(S.getElement())) { 112757b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall // Initialize the variable, in case it's a __block variable or something. 112857b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall EmitAutoVarInit(variable); 1129f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson 113057b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall const VarDecl* D = cast<VarDecl>(SD->getSingleDecl()); 1131d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall DeclRefExpr tempDRE(const_cast<VarDecl*>(D), D->getType(), 1132d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall VK_LValue, SourceLocation()); 1133d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall elementLValue = EmitLValue(&tempDRE); 1134d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall elementType = D->getType(); 113557b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall elementIsVariable = true; 11367acddacc921cd0b3f813443a8641eeddb82dfbd4John McCall 11377acddacc921cd0b3f813443a8641eeddb82dfbd4John McCall if (D->isARCPseudoStrong()) 11387acddacc921cd0b3f813443a8641eeddb82dfbd4John McCall elementLValue.getQuals().setObjCLifetime(Qualifiers::OCL_ExplicitNone); 1139d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall } else { 1140d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall elementLValue = LValue(); // suppress warning 1141d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall elementType = cast<Expr>(S.getElement())->getType(); 114257b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall elementIsVariable = false; 1143d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall } 11442acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *convertedElementType = ConvertType(elementType); 1145f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson 1146d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // Fetch the buffer out of the enumeration state. 1147d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // TODO: this pointer should actually be invariant between 1148d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // refreshes, which would help us do certain loop optimizations. 1149d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall llvm::Value *StateItemsPtr = 1150d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall Builder.CreateStructGEP(StatePtr, 1, "stateitems.ptr"); 1151d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall llvm::Value *EnumStateItems = 1152d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall Builder.CreateLoad(StateItemsPtr, "stateitems"); 1153f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson 1154d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // Fetch the value at the current index from the buffer. 11551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *CurrentItemPtr = 1156d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall Builder.CreateGEP(EnumStateItems, index, "currentitem.ptr"); 1157d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall llvm::Value *CurrentItem = Builder.CreateLoad(CurrentItemPtr); 11581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1159d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // Cast that value to the right type. 1160d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall CurrentItem = Builder.CreateBitCast(CurrentItem, convertedElementType, 1161d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall "currentitem"); 11621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1163d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // Make sure we have an l-value. Yes, this gets evaluated every 1164d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // time through the loop. 11657acddacc921cd0b3f813443a8641eeddb82dfbd4John McCall if (!elementIsVariable) { 1166d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall elementLValue = EmitLValue(cast<Expr>(S.getElement())); 1167545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall EmitStoreThroughLValue(RValue::get(CurrentItem), elementLValue); 11687acddacc921cd0b3f813443a8641eeddb82dfbd4John McCall } else { 11697acddacc921cd0b3f813443a8641eeddb82dfbd4John McCall EmitScalarInit(CurrentItem, elementLValue); 11707acddacc921cd0b3f813443a8641eeddb82dfbd4John McCall } 11711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 117257b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall // If we do have an element variable, this assignment is the end of 117357b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall // its initialization. 117457b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall if (elementIsVariable) 117557b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall EmitAutoVarCleanups(variable); 117657b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall 1177d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // Perform the loop body, setting up break and continue labels. 1178e4b6d342c29d5cb9d311756100df1603810fa892Anders Carlsson BreakContinueStack.push_back(BreakContinue(LoopEnd, AfterBody)); 1179d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall { 1180d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall RunCleanupsScope Scope(*this); 1181d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall EmitStmt(S.getBody()); 1182d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall } 1183f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson BreakContinueStack.pop_back(); 11841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1185d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // Destroy the element variable now. 1186d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall elementVariableScope.ForceCleanup(); 1187d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall 1188d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // Check whether there are more elements. 1189ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall EmitBlock(AfterBody.getBlock()); 11901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1191d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall llvm::BasicBlock *FetchMoreBB = createBasicBlock("forcoll.refetch"); 1192d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall 1193d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // First we check in the local buffer. 1194d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall llvm::Value *indexPlusOne 1195d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall = Builder.CreateAdd(index, llvm::ConstantInt::get(UnsignedLongLTy, 1)); 1196d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall 1197d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // If we haven't overrun the buffer yet, we can continue. 1198d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall Builder.CreateCondBr(Builder.CreateICmpULT(indexPlusOne, count), 1199d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall LoopBodyBB, FetchMoreBB); 1200f0906c4edb37b20141428ca77fa7dfd00b976eafFariborz Jahanian 1201d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall index->addIncoming(indexPlusOne, AfterBody.getBlock()); 1202d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall count->addIncoming(count, AfterBody.getBlock()); 1203f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson 1204d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // Otherwise, we have to fetch more elements. 1205d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall EmitBlock(FetchMoreBB); 12061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump CountRV = 1208ef072fd2f3347cfd857d6eb787b245b950771430John McCall CGM.getObjCRuntime().GenerateMessageSend(*this, ReturnValueSlot(), 1209f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson getContext().UnsignedLongTy, 12101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump FastEnumSel, 1211c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall Collection, Args); 12121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1213d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // If we got a zero count, we're done. 1214d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall llvm::Value *refetchCount = CountRV.getScalarVal(); 1215d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall 1216d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall // (note that the message send might split FetchMoreBB) 1217d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall index->addIncoming(zero, Builder.GetInsertBlock()); 1218d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall count->addIncoming(refetchCount, Builder.GetInsertBlock()); 1219d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall 1220d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall Builder.CreateCondBr(Builder.CreateICmpEQ(refetchCount, zero), 1221d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall EmptyBB, LoopBodyBB); 12221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1223f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson // No more elements. 1224d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall EmitBlock(EmptyBB); 1225f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson 122657b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall if (!elementIsVariable) { 1227f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson // If the element was not a declaration, set it to be null. 1228f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson 1229d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall llvm::Value *null = llvm::Constant::getNullValue(convertedElementType); 1230d88687fc8b3b6e0bce1f7cb83d347ef009ab5480John McCall elementLValue = EmitLValue(cast<Expr>(S.getElement())); 1231545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall EmitStoreThroughLValue(RValue::get(null), elementLValue); 1232f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson } 1233f484c31f4d6934f56070c2942d4dfdf3fee84074Anders Carlsson 1234bcbd03ac0ac0890a436e1a179d3a285e914d41faDevang Patel if (DI) { 1235bcbd03ac0ac0890a436e1a179d3a285e914d41faDevang Patel DI->setLocation(S.getSourceRange().getEnd()); 1236bcbd03ac0ac0890a436e1a179d3a285e914d41faDevang Patel DI->EmitRegionEnd(Builder); 1237bcbd03ac0ac0890a436e1a179d3a285e914d41faDevang Patel } 1238bcbd03ac0ac0890a436e1a179d3a285e914d41faDevang Patel 1239ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall EmitBlock(LoopEnd.getBlock()); 12403d8400d9a61aa4b63ff35e5cede405b32a41425eAnders Carlsson} 12413d8400d9a61aa4b63ff35e5cede405b32a41425eAnders Carlsson 12421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpvoid CodeGenFunction::EmitObjCAtTryStmt(const ObjCAtTryStmt &S) { 1243f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGM.getObjCRuntime().EmitTryStmt(*this, S); 124464d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 124564d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 12461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpvoid CodeGenFunction::EmitObjCAtThrowStmt(const ObjCAtThrowStmt &S) { 124764d5d6c5903157c521af496479d06dc26032d718Anders Carlsson CGM.getObjCRuntime().EmitThrowStmt(*this, S); 124864d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 124964d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 125010cac6f7115b59a466bb8d2d51cdddeb38aadc37Chris Lattnervoid CodeGenFunction::EmitObjCAtSynchronizedStmt( 12511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCAtSynchronizedStmt &S) { 1252f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGM.getObjCRuntime().EmitSynchronizedStmt(*this, S); 125310cac6f7115b59a466bb8d2d51cdddeb38aadc37Chris Lattner} 125410cac6f7115b59a466bb8d2d51cdddeb38aadc37Chris Lattner 1255f85e193739c953358c865005855253af4f68a497John McCall/// Produce the code for a CK_ObjCProduceObject. Just does a 1256f85e193739c953358c865005855253af4f68a497John McCall/// primitive retain. 1257f85e193739c953358c865005855253af4f68a497John McCallllvm::Value *CodeGenFunction::EmitObjCProduceObject(QualType type, 1258f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *value) { 1259f85e193739c953358c865005855253af4f68a497John McCall return EmitARCRetain(type, value); 1260f85e193739c953358c865005855253af4f68a497John McCall} 1261f85e193739c953358c865005855253af4f68a497John McCall 1262f85e193739c953358c865005855253af4f68a497John McCallnamespace { 1263f85e193739c953358c865005855253af4f68a497John McCall struct CallObjCRelease : EHScopeStack::Cleanup { 1264f85e193739c953358c865005855253af4f68a497John McCall CallObjCRelease(QualType type, llvm::Value *ptr, llvm::Value *condition) 1265f85e193739c953358c865005855253af4f68a497John McCall : type(type), ptr(ptr), condition(condition) {} 1266f85e193739c953358c865005855253af4f68a497John McCall QualType type; 1267f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *ptr; 1268f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *condition; 1269f85e193739c953358c865005855253af4f68a497John McCall 1270ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall void Emit(CodeGenFunction &CGF, Flags flags) { 1271f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *object; 1272f85e193739c953358c865005855253af4f68a497John McCall 1273f85e193739c953358c865005855253af4f68a497John McCall // If we're in a conditional branch, we had to stash away in an 1274f85e193739c953358c865005855253af4f68a497John McCall // alloca the pointer to be released. 1275f85e193739c953358c865005855253af4f68a497John McCall llvm::BasicBlock *cont = 0; 1276f85e193739c953358c865005855253af4f68a497John McCall if (condition) { 1277f85e193739c953358c865005855253af4f68a497John McCall llvm::BasicBlock *release = CGF.createBasicBlock("release.yes"); 1278f85e193739c953358c865005855253af4f68a497John McCall cont = CGF.createBasicBlock("release.cont"); 1279f85e193739c953358c865005855253af4f68a497John McCall 1280f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *cond = CGF.Builder.CreateLoad(condition); 1281f85e193739c953358c865005855253af4f68a497John McCall CGF.Builder.CreateCondBr(cond, release, cont); 1282f85e193739c953358c865005855253af4f68a497John McCall CGF.EmitBlock(release); 1283f85e193739c953358c865005855253af4f68a497John McCall object = CGF.Builder.CreateLoad(ptr); 1284f85e193739c953358c865005855253af4f68a497John McCall } else { 1285f85e193739c953358c865005855253af4f68a497John McCall object = ptr; 1286f85e193739c953358c865005855253af4f68a497John McCall } 1287f85e193739c953358c865005855253af4f68a497John McCall 1288f85e193739c953358c865005855253af4f68a497John McCall CGF.EmitARCRelease(object, /*precise*/ true); 1289f85e193739c953358c865005855253af4f68a497John McCall 1290f85e193739c953358c865005855253af4f68a497John McCall if (cont) CGF.EmitBlock(cont); 1291f85e193739c953358c865005855253af4f68a497John McCall } 1292f85e193739c953358c865005855253af4f68a497John McCall }; 1293f85e193739c953358c865005855253af4f68a497John McCall} 1294f85e193739c953358c865005855253af4f68a497John McCall 1295f85e193739c953358c865005855253af4f68a497John McCall/// Produce the code for a CK_ObjCConsumeObject. Does a primitive 1296f85e193739c953358c865005855253af4f68a497John McCall/// release at the end of the full-expression. 1297f85e193739c953358c865005855253af4f68a497John McCallllvm::Value *CodeGenFunction::EmitObjCConsumeObject(QualType type, 1298f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *object) { 1299f85e193739c953358c865005855253af4f68a497John McCall // If we're in a conditional branch, we need to make the cleanup 1300f85e193739c953358c865005855253af4f68a497John McCall // conditional. FIXME: this really needs to be supported by the 1301f85e193739c953358c865005855253af4f68a497John McCall // environment. 1302f85e193739c953358c865005855253af4f68a497John McCall llvm::AllocaInst *cond; 1303f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *ptr; 1304f85e193739c953358c865005855253af4f68a497John McCall if (isInConditionalBranch()) { 1305f85e193739c953358c865005855253af4f68a497John McCall cond = CreateTempAlloca(Builder.getInt1Ty(), "release.cond"); 1306f85e193739c953358c865005855253af4f68a497John McCall ptr = CreateTempAlloca(object->getType(), "release.value"); 1307f85e193739c953358c865005855253af4f68a497John McCall 1308f85e193739c953358c865005855253af4f68a497John McCall // The alloca is false until we get here. 1309f85e193739c953358c865005855253af4f68a497John McCall // FIXME: er. doesn't this need to be set at the start of the condition? 1310f85e193739c953358c865005855253af4f68a497John McCall InitTempAlloca(cond, Builder.getFalse()); 1311f85e193739c953358c865005855253af4f68a497John McCall 1312f85e193739c953358c865005855253af4f68a497John McCall // Then it turns true. 1313f85e193739c953358c865005855253af4f68a497John McCall Builder.CreateStore(Builder.getTrue(), cond); 1314f85e193739c953358c865005855253af4f68a497John McCall Builder.CreateStore(object, ptr); 1315f85e193739c953358c865005855253af4f68a497John McCall } else { 1316f85e193739c953358c865005855253af4f68a497John McCall cond = 0; 1317f85e193739c953358c865005855253af4f68a497John McCall ptr = object; 1318f85e193739c953358c865005855253af4f68a497John McCall } 1319f85e193739c953358c865005855253af4f68a497John McCall 1320f85e193739c953358c865005855253af4f68a497John McCall EHStack.pushCleanup<CallObjCRelease>(getARCCleanupKind(), type, ptr, cond); 1321f85e193739c953358c865005855253af4f68a497John McCall return object; 1322f85e193739c953358c865005855253af4f68a497John McCall} 1323f85e193739c953358c865005855253af4f68a497John McCall 1324f85e193739c953358c865005855253af4f68a497John McCallllvm::Value *CodeGenFunction::EmitObjCExtendObjectLifetime(QualType type, 1325f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *value) { 1326f85e193739c953358c865005855253af4f68a497John McCall return EmitARCRetainAutorelease(type, value); 1327f85e193739c953358c865005855253af4f68a497John McCall} 1328f85e193739c953358c865005855253af4f68a497John McCall 1329f85e193739c953358c865005855253af4f68a497John McCall 1330f85e193739c953358c865005855253af4f68a497John McCallstatic llvm::Constant *createARCRuntimeFunction(CodeGenModule &CGM, 13312acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::FunctionType *type, 13325f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef fnName) { 1333f85e193739c953358c865005855253af4f68a497John McCall llvm::Constant *fn = CGM.CreateRuntimeFunction(type, fnName); 1334f85e193739c953358c865005855253af4f68a497John McCall 1335f85e193739c953358c865005855253af4f68a497John McCall // In -fobjc-no-arc-runtime, emit weak references to the runtime 1336f85e193739c953358c865005855253af4f68a497John McCall // support library. 13379f084a3166b684573ba49df28fc5792bc37d92e1John McCall if (!CGM.getCodeGenOpts().ObjCRuntimeHasARC) 1338f85e193739c953358c865005855253af4f68a497John McCall if (llvm::Function *f = dyn_cast<llvm::Function>(fn)) 1339f85e193739c953358c865005855253af4f68a497John McCall f->setLinkage(llvm::Function::ExternalWeakLinkage); 1340f85e193739c953358c865005855253af4f68a497John McCall 1341f85e193739c953358c865005855253af4f68a497John McCall return fn; 1342f85e193739c953358c865005855253af4f68a497John McCall} 1343f85e193739c953358c865005855253af4f68a497John McCall 1344f85e193739c953358c865005855253af4f68a497John McCall/// Perform an operation having the signature 1345f85e193739c953358c865005855253af4f68a497John McCall/// i8* (i8*) 1346f85e193739c953358c865005855253af4f68a497John McCall/// where a null input causes a no-op and returns null. 1347f85e193739c953358c865005855253af4f68a497John McCallstatic llvm::Value *emitARCValueOperation(CodeGenFunction &CGF, 1348f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *value, 1349f85e193739c953358c865005855253af4f68a497John McCall llvm::Constant *&fn, 13505f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef fnName) { 1351f85e193739c953358c865005855253af4f68a497John McCall if (isa<llvm::ConstantPointerNull>(value)) return value; 1352f85e193739c953358c865005855253af4f68a497John McCall 1353f85e193739c953358c865005855253af4f68a497John McCall if (!fn) { 13549cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner std::vector<llvm::Type*> args(1, CGF.Int8PtrTy); 13552acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::FunctionType *fnType = 1356f85e193739c953358c865005855253af4f68a497John McCall llvm::FunctionType::get(CGF.Int8PtrTy, args, false); 1357f85e193739c953358c865005855253af4f68a497John McCall fn = createARCRuntimeFunction(CGF.CGM, fnType, fnName); 1358f85e193739c953358c865005855253af4f68a497John McCall } 1359f85e193739c953358c865005855253af4f68a497John McCall 1360f85e193739c953358c865005855253af4f68a497John McCall // Cast the argument to 'id'. 13612acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *origType = value->getType(); 1362f85e193739c953358c865005855253af4f68a497John McCall value = CGF.Builder.CreateBitCast(value, CGF.Int8PtrTy); 1363f85e193739c953358c865005855253af4f68a497John McCall 1364f85e193739c953358c865005855253af4f68a497John McCall // Call the function. 1365f85e193739c953358c865005855253af4f68a497John McCall llvm::CallInst *call = CGF.Builder.CreateCall(fn, value); 1366f85e193739c953358c865005855253af4f68a497John McCall call->setDoesNotThrow(); 1367f85e193739c953358c865005855253af4f68a497John McCall 1368f85e193739c953358c865005855253af4f68a497John McCall // Cast the result back to the original type. 1369f85e193739c953358c865005855253af4f68a497John McCall return CGF.Builder.CreateBitCast(call, origType); 1370f85e193739c953358c865005855253af4f68a497John McCall} 1371f85e193739c953358c865005855253af4f68a497John McCall 1372f85e193739c953358c865005855253af4f68a497John McCall/// Perform an operation having the following signature: 1373f85e193739c953358c865005855253af4f68a497John McCall/// i8* (i8**) 1374f85e193739c953358c865005855253af4f68a497John McCallstatic llvm::Value *emitARCLoadOperation(CodeGenFunction &CGF, 1375f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *addr, 1376f85e193739c953358c865005855253af4f68a497John McCall llvm::Constant *&fn, 13775f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef fnName) { 1378f85e193739c953358c865005855253af4f68a497John McCall if (!fn) { 13799cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner std::vector<llvm::Type*> args(1, CGF.Int8PtrPtrTy); 13802acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::FunctionType *fnType = 1381f85e193739c953358c865005855253af4f68a497John McCall llvm::FunctionType::get(CGF.Int8PtrTy, args, false); 1382f85e193739c953358c865005855253af4f68a497John McCall fn = createARCRuntimeFunction(CGF.CGM, fnType, fnName); 1383f85e193739c953358c865005855253af4f68a497John McCall } 1384f85e193739c953358c865005855253af4f68a497John McCall 1385f85e193739c953358c865005855253af4f68a497John McCall // Cast the argument to 'id*'. 13862acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *origType = addr->getType(); 1387f85e193739c953358c865005855253af4f68a497John McCall addr = CGF.Builder.CreateBitCast(addr, CGF.Int8PtrPtrTy); 1388f85e193739c953358c865005855253af4f68a497John McCall 1389f85e193739c953358c865005855253af4f68a497John McCall // Call the function. 1390f85e193739c953358c865005855253af4f68a497John McCall llvm::CallInst *call = CGF.Builder.CreateCall(fn, addr); 1391f85e193739c953358c865005855253af4f68a497John McCall call->setDoesNotThrow(); 1392f85e193739c953358c865005855253af4f68a497John McCall 1393f85e193739c953358c865005855253af4f68a497John McCall // Cast the result back to a dereference of the original type. 1394f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *result = call; 1395f85e193739c953358c865005855253af4f68a497John McCall if (origType != CGF.Int8PtrPtrTy) 1396f85e193739c953358c865005855253af4f68a497John McCall result = CGF.Builder.CreateBitCast(result, 1397f85e193739c953358c865005855253af4f68a497John McCall cast<llvm::PointerType>(origType)->getElementType()); 1398f85e193739c953358c865005855253af4f68a497John McCall 1399f85e193739c953358c865005855253af4f68a497John McCall return result; 1400f85e193739c953358c865005855253af4f68a497John McCall} 1401f85e193739c953358c865005855253af4f68a497John McCall 1402f85e193739c953358c865005855253af4f68a497John McCall/// Perform an operation having the following signature: 1403f85e193739c953358c865005855253af4f68a497John McCall/// i8* (i8**, i8*) 1404f85e193739c953358c865005855253af4f68a497John McCallstatic llvm::Value *emitARCStoreOperation(CodeGenFunction &CGF, 1405f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *addr, 1406f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *value, 1407f85e193739c953358c865005855253af4f68a497John McCall llvm::Constant *&fn, 14085f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef fnName, 1409f85e193739c953358c865005855253af4f68a497John McCall bool ignored) { 1410f85e193739c953358c865005855253af4f68a497John McCall assert(cast<llvm::PointerType>(addr->getType())->getElementType() 1411f85e193739c953358c865005855253af4f68a497John McCall == value->getType()); 1412f85e193739c953358c865005855253af4f68a497John McCall 1413f85e193739c953358c865005855253af4f68a497John McCall if (!fn) { 14149cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner std::vector<llvm::Type*> argTypes(2); 1415f85e193739c953358c865005855253af4f68a497John McCall argTypes[0] = CGF.Int8PtrPtrTy; 1416f85e193739c953358c865005855253af4f68a497John McCall argTypes[1] = CGF.Int8PtrTy; 1417f85e193739c953358c865005855253af4f68a497John McCall 14182acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::FunctionType *fnType 1419f85e193739c953358c865005855253af4f68a497John McCall = llvm::FunctionType::get(CGF.Int8PtrTy, argTypes, false); 1420f85e193739c953358c865005855253af4f68a497John McCall fn = createARCRuntimeFunction(CGF.CGM, fnType, fnName); 1421f85e193739c953358c865005855253af4f68a497John McCall } 1422f85e193739c953358c865005855253af4f68a497John McCall 14232acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *origType = value->getType(); 1424f85e193739c953358c865005855253af4f68a497John McCall 1425f85e193739c953358c865005855253af4f68a497John McCall addr = CGF.Builder.CreateBitCast(addr, CGF.Int8PtrPtrTy); 1426f85e193739c953358c865005855253af4f68a497John McCall value = CGF.Builder.CreateBitCast(value, CGF.Int8PtrTy); 1427f85e193739c953358c865005855253af4f68a497John McCall 1428f85e193739c953358c865005855253af4f68a497John McCall llvm::CallInst *result = CGF.Builder.CreateCall2(fn, addr, value); 1429f85e193739c953358c865005855253af4f68a497John McCall result->setDoesNotThrow(); 1430f85e193739c953358c865005855253af4f68a497John McCall 1431f85e193739c953358c865005855253af4f68a497John McCall if (ignored) return 0; 1432f85e193739c953358c865005855253af4f68a497John McCall 1433f85e193739c953358c865005855253af4f68a497John McCall return CGF.Builder.CreateBitCast(result, origType); 1434f85e193739c953358c865005855253af4f68a497John McCall} 1435f85e193739c953358c865005855253af4f68a497John McCall 1436f85e193739c953358c865005855253af4f68a497John McCall/// Perform an operation having the following signature: 1437f85e193739c953358c865005855253af4f68a497John McCall/// void (i8**, i8**) 1438f85e193739c953358c865005855253af4f68a497John McCallstatic void emitARCCopyOperation(CodeGenFunction &CGF, 1439f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *dst, 1440f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *src, 1441f85e193739c953358c865005855253af4f68a497John McCall llvm::Constant *&fn, 14425f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef fnName) { 1443f85e193739c953358c865005855253af4f68a497John McCall assert(dst->getType() == src->getType()); 1444f85e193739c953358c865005855253af4f68a497John McCall 1445f85e193739c953358c865005855253af4f68a497John McCall if (!fn) { 14469cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner std::vector<llvm::Type*> argTypes(2, CGF.Int8PtrPtrTy); 14472acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::FunctionType *fnType 1448f85e193739c953358c865005855253af4f68a497John McCall = llvm::FunctionType::get(CGF.Builder.getVoidTy(), argTypes, false); 1449f85e193739c953358c865005855253af4f68a497John McCall fn = createARCRuntimeFunction(CGF.CGM, fnType, fnName); 1450f85e193739c953358c865005855253af4f68a497John McCall } 1451f85e193739c953358c865005855253af4f68a497John McCall 1452f85e193739c953358c865005855253af4f68a497John McCall dst = CGF.Builder.CreateBitCast(dst, CGF.Int8PtrPtrTy); 1453f85e193739c953358c865005855253af4f68a497John McCall src = CGF.Builder.CreateBitCast(src, CGF.Int8PtrPtrTy); 1454f85e193739c953358c865005855253af4f68a497John McCall 1455f85e193739c953358c865005855253af4f68a497John McCall llvm::CallInst *result = CGF.Builder.CreateCall2(fn, dst, src); 1456f85e193739c953358c865005855253af4f68a497John McCall result->setDoesNotThrow(); 1457f85e193739c953358c865005855253af4f68a497John McCall} 1458f85e193739c953358c865005855253af4f68a497John McCall 1459f85e193739c953358c865005855253af4f68a497John McCall/// Produce the code to do a retain. Based on the type, calls one of: 1460f85e193739c953358c865005855253af4f68a497John McCall/// call i8* @objc_retain(i8* %value) 1461f85e193739c953358c865005855253af4f68a497John McCall/// call i8* @objc_retainBlock(i8* %value) 1462f85e193739c953358c865005855253af4f68a497John McCallllvm::Value *CodeGenFunction::EmitARCRetain(QualType type, llvm::Value *value) { 1463f85e193739c953358c865005855253af4f68a497John McCall if (type->isBlockPointerType()) 1464f85e193739c953358c865005855253af4f68a497John McCall return EmitARCRetainBlock(value); 1465f85e193739c953358c865005855253af4f68a497John McCall else 1466f85e193739c953358c865005855253af4f68a497John McCall return EmitARCRetainNonBlock(value); 1467f85e193739c953358c865005855253af4f68a497John McCall} 1468f85e193739c953358c865005855253af4f68a497John McCall 1469f85e193739c953358c865005855253af4f68a497John McCall/// Retain the given object, with normal retain semantics. 1470f85e193739c953358c865005855253af4f68a497John McCall/// call i8* @objc_retain(i8* %value) 1471f85e193739c953358c865005855253af4f68a497John McCallllvm::Value *CodeGenFunction::EmitARCRetainNonBlock(llvm::Value *value) { 1472f85e193739c953358c865005855253af4f68a497John McCall return emitARCValueOperation(*this, value, 1473f85e193739c953358c865005855253af4f68a497John McCall CGM.getARCEntrypoints().objc_retain, 1474f85e193739c953358c865005855253af4f68a497John McCall "objc_retain"); 1475f85e193739c953358c865005855253af4f68a497John McCall} 1476f85e193739c953358c865005855253af4f68a497John McCall 1477f85e193739c953358c865005855253af4f68a497John McCall/// Retain the given block, with _Block_copy semantics. 1478f85e193739c953358c865005855253af4f68a497John McCall/// call i8* @objc_retainBlock(i8* %value) 1479f85e193739c953358c865005855253af4f68a497John McCallllvm::Value *CodeGenFunction::EmitARCRetainBlock(llvm::Value *value) { 1480f85e193739c953358c865005855253af4f68a497John McCall return emitARCValueOperation(*this, value, 1481f85e193739c953358c865005855253af4f68a497John McCall CGM.getARCEntrypoints().objc_retainBlock, 1482f85e193739c953358c865005855253af4f68a497John McCall "objc_retainBlock"); 1483f85e193739c953358c865005855253af4f68a497John McCall} 1484f85e193739c953358c865005855253af4f68a497John McCall 1485f85e193739c953358c865005855253af4f68a497John McCall/// Retain the given object which is the result of a function call. 1486f85e193739c953358c865005855253af4f68a497John McCall/// call i8* @objc_retainAutoreleasedReturnValue(i8* %value) 1487f85e193739c953358c865005855253af4f68a497John McCall/// 1488f85e193739c953358c865005855253af4f68a497John McCall/// Yes, this function name is one character away from a different 1489f85e193739c953358c865005855253af4f68a497John McCall/// call with completely different semantics. 1490f85e193739c953358c865005855253af4f68a497John McCallllvm::Value * 1491f85e193739c953358c865005855253af4f68a497John McCallCodeGenFunction::EmitARCRetainAutoreleasedReturnValue(llvm::Value *value) { 1492f85e193739c953358c865005855253af4f68a497John McCall // Fetch the void(void) inline asm which marks that we're going to 1493f85e193739c953358c865005855253af4f68a497John McCall // retain the autoreleased return value. 1494f85e193739c953358c865005855253af4f68a497John McCall llvm::InlineAsm *&marker 1495f85e193739c953358c865005855253af4f68a497John McCall = CGM.getARCEntrypoints().retainAutoreleasedReturnValueMarker; 1496f85e193739c953358c865005855253af4f68a497John McCall if (!marker) { 14975f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef assembly 1498f85e193739c953358c865005855253af4f68a497John McCall = CGM.getTargetCodeGenInfo() 1499f85e193739c953358c865005855253af4f68a497John McCall .getARCRetainAutoreleasedReturnValueMarker(); 1500f85e193739c953358c865005855253af4f68a497John McCall 1501f85e193739c953358c865005855253af4f68a497John McCall // If we have an empty assembly string, there's nothing to do. 1502f85e193739c953358c865005855253af4f68a497John McCall if (assembly.empty()) { 1503f85e193739c953358c865005855253af4f68a497John McCall 1504f85e193739c953358c865005855253af4f68a497John McCall // Otherwise, at -O0, build an inline asm that we're going to call 1505f85e193739c953358c865005855253af4f68a497John McCall // in a moment. 1506f85e193739c953358c865005855253af4f68a497John McCall } else if (CGM.getCodeGenOpts().OptimizationLevel == 0) { 1507f85e193739c953358c865005855253af4f68a497John McCall llvm::FunctionType *type = 1508f85e193739c953358c865005855253af4f68a497John McCall llvm::FunctionType::get(llvm::Type::getVoidTy(getLLVMContext()), 1509f85e193739c953358c865005855253af4f68a497John McCall /*variadic*/ false); 1510f85e193739c953358c865005855253af4f68a497John McCall 1511f85e193739c953358c865005855253af4f68a497John McCall marker = llvm::InlineAsm::get(type, assembly, "", /*sideeffects*/ true); 1512f85e193739c953358c865005855253af4f68a497John McCall 1513f85e193739c953358c865005855253af4f68a497John McCall // If we're at -O1 and above, we don't want to litter the code 1514f85e193739c953358c865005855253af4f68a497John McCall // with this marker yet, so leave a breadcrumb for the ARC 1515f85e193739c953358c865005855253af4f68a497John McCall // optimizer to pick up. 1516f85e193739c953358c865005855253af4f68a497John McCall } else { 1517f85e193739c953358c865005855253af4f68a497John McCall llvm::NamedMDNode *metadata = 1518f85e193739c953358c865005855253af4f68a497John McCall CGM.getModule().getOrInsertNamedMetadata( 1519f85e193739c953358c865005855253af4f68a497John McCall "clang.arc.retainAutoreleasedReturnValueMarker"); 1520f85e193739c953358c865005855253af4f68a497John McCall assert(metadata->getNumOperands() <= 1); 1521f85e193739c953358c865005855253af4f68a497John McCall if (metadata->getNumOperands() == 0) { 1522f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *string = llvm::MDString::get(getLLVMContext(), assembly); 1523f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *args[] = { string }; 1524f85e193739c953358c865005855253af4f68a497John McCall metadata->addOperand(llvm::MDNode::get(getLLVMContext(), args)); 1525f85e193739c953358c865005855253af4f68a497John McCall } 1526f85e193739c953358c865005855253af4f68a497John McCall } 1527f85e193739c953358c865005855253af4f68a497John McCall } 1528f85e193739c953358c865005855253af4f68a497John McCall 1529f85e193739c953358c865005855253af4f68a497John McCall // Call the marker asm if we made one, which we do only at -O0. 1530f85e193739c953358c865005855253af4f68a497John McCall if (marker) Builder.CreateCall(marker); 1531f85e193739c953358c865005855253af4f68a497John McCall 1532f85e193739c953358c865005855253af4f68a497John McCall return emitARCValueOperation(*this, value, 1533f85e193739c953358c865005855253af4f68a497John McCall CGM.getARCEntrypoints().objc_retainAutoreleasedReturnValue, 1534f85e193739c953358c865005855253af4f68a497John McCall "objc_retainAutoreleasedReturnValue"); 1535f85e193739c953358c865005855253af4f68a497John McCall} 1536f85e193739c953358c865005855253af4f68a497John McCall 1537f85e193739c953358c865005855253af4f68a497John McCall/// Release the given object. 1538f85e193739c953358c865005855253af4f68a497John McCall/// call void @objc_release(i8* %value) 1539f85e193739c953358c865005855253af4f68a497John McCallvoid CodeGenFunction::EmitARCRelease(llvm::Value *value, bool precise) { 1540f85e193739c953358c865005855253af4f68a497John McCall if (isa<llvm::ConstantPointerNull>(value)) return; 1541f85e193739c953358c865005855253af4f68a497John McCall 1542f85e193739c953358c865005855253af4f68a497John McCall llvm::Constant *&fn = CGM.getARCEntrypoints().objc_release; 1543f85e193739c953358c865005855253af4f68a497John McCall if (!fn) { 15449cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner std::vector<llvm::Type*> args(1, Int8PtrTy); 15452acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::FunctionType *fnType = 1546f85e193739c953358c865005855253af4f68a497John McCall llvm::FunctionType::get(Builder.getVoidTy(), args, false); 1547f85e193739c953358c865005855253af4f68a497John McCall fn = createARCRuntimeFunction(CGM, fnType, "objc_release"); 1548f85e193739c953358c865005855253af4f68a497John McCall } 1549f85e193739c953358c865005855253af4f68a497John McCall 1550f85e193739c953358c865005855253af4f68a497John McCall // Cast the argument to 'id'. 1551f85e193739c953358c865005855253af4f68a497John McCall value = Builder.CreateBitCast(value, Int8PtrTy); 1552f85e193739c953358c865005855253af4f68a497John McCall 1553f85e193739c953358c865005855253af4f68a497John McCall // Call objc_release. 1554f85e193739c953358c865005855253af4f68a497John McCall llvm::CallInst *call = Builder.CreateCall(fn, value); 1555f85e193739c953358c865005855253af4f68a497John McCall call->setDoesNotThrow(); 1556f85e193739c953358c865005855253af4f68a497John McCall 1557f85e193739c953358c865005855253af4f68a497John McCall if (!precise) { 15585f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Value*,1> args; 1559f85e193739c953358c865005855253af4f68a497John McCall call->setMetadata("clang.imprecise_release", 1560f85e193739c953358c865005855253af4f68a497John McCall llvm::MDNode::get(Builder.getContext(), args)); 1561f85e193739c953358c865005855253af4f68a497John McCall } 1562f85e193739c953358c865005855253af4f68a497John McCall} 1563f85e193739c953358c865005855253af4f68a497John McCall 1564f85e193739c953358c865005855253af4f68a497John McCall/// Store into a strong object. Always calls this: 1565f85e193739c953358c865005855253af4f68a497John McCall/// call void @objc_storeStrong(i8** %addr, i8* %value) 1566f85e193739c953358c865005855253af4f68a497John McCallllvm::Value *CodeGenFunction::EmitARCStoreStrongCall(llvm::Value *addr, 1567f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *value, 1568f85e193739c953358c865005855253af4f68a497John McCall bool ignored) { 1569f85e193739c953358c865005855253af4f68a497John McCall assert(cast<llvm::PointerType>(addr->getType())->getElementType() 1570f85e193739c953358c865005855253af4f68a497John McCall == value->getType()); 1571f85e193739c953358c865005855253af4f68a497John McCall 1572f85e193739c953358c865005855253af4f68a497John McCall llvm::Constant *&fn = CGM.getARCEntrypoints().objc_storeStrong; 1573f85e193739c953358c865005855253af4f68a497John McCall if (!fn) { 15749cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *argTypes[] = { Int8PtrPtrTy, Int8PtrTy }; 15752acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::FunctionType *fnType 1576f85e193739c953358c865005855253af4f68a497John McCall = llvm::FunctionType::get(Builder.getVoidTy(), argTypes, false); 1577f85e193739c953358c865005855253af4f68a497John McCall fn = createARCRuntimeFunction(CGM, fnType, "objc_storeStrong"); 1578f85e193739c953358c865005855253af4f68a497John McCall } 1579f85e193739c953358c865005855253af4f68a497John McCall 1580f85e193739c953358c865005855253af4f68a497John McCall addr = Builder.CreateBitCast(addr, Int8PtrPtrTy); 1581f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *castValue = Builder.CreateBitCast(value, Int8PtrTy); 1582f85e193739c953358c865005855253af4f68a497John McCall 1583f85e193739c953358c865005855253af4f68a497John McCall Builder.CreateCall2(fn, addr, castValue)->setDoesNotThrow(); 1584f85e193739c953358c865005855253af4f68a497John McCall 1585f85e193739c953358c865005855253af4f68a497John McCall if (ignored) return 0; 1586f85e193739c953358c865005855253af4f68a497John McCall return value; 1587f85e193739c953358c865005855253af4f68a497John McCall} 1588f85e193739c953358c865005855253af4f68a497John McCall 1589f85e193739c953358c865005855253af4f68a497John McCall/// Store into a strong object. Sometimes calls this: 1590f85e193739c953358c865005855253af4f68a497John McCall/// call void @objc_storeStrong(i8** %addr, i8* %value) 1591f85e193739c953358c865005855253af4f68a497John McCall/// Other times, breaks it down into components. 1592545d996ec5a3113f046944f11b27cc2d6cb055b4John McCallllvm::Value *CodeGenFunction::EmitARCStoreStrong(LValue dst, 1593f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *newValue, 1594f85e193739c953358c865005855253af4f68a497John McCall bool ignored) { 1595545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall QualType type = dst.getType(); 1596f85e193739c953358c865005855253af4f68a497John McCall bool isBlock = type->isBlockPointerType(); 1597f85e193739c953358c865005855253af4f68a497John McCall 1598f85e193739c953358c865005855253af4f68a497John McCall // Use a store barrier at -O0 unless this is a block type or the 1599f85e193739c953358c865005855253af4f68a497John McCall // lvalue is inadequately aligned. 1600f85e193739c953358c865005855253af4f68a497John McCall if (shouldUseFusedARCCalls() && 1601f85e193739c953358c865005855253af4f68a497John McCall !isBlock && 1602f85e193739c953358c865005855253af4f68a497John McCall !(dst.getAlignment() && dst.getAlignment() < PointerAlignInBytes)) { 1603f85e193739c953358c865005855253af4f68a497John McCall return EmitARCStoreStrongCall(dst.getAddress(), newValue, ignored); 1604f85e193739c953358c865005855253af4f68a497John McCall } 1605f85e193739c953358c865005855253af4f68a497John McCall 1606f85e193739c953358c865005855253af4f68a497John McCall // Otherwise, split it out. 1607f85e193739c953358c865005855253af4f68a497John McCall 1608f85e193739c953358c865005855253af4f68a497John McCall // Retain the new value. 1609f85e193739c953358c865005855253af4f68a497John McCall newValue = EmitARCRetain(type, newValue); 1610f85e193739c953358c865005855253af4f68a497John McCall 1611f85e193739c953358c865005855253af4f68a497John McCall // Read the old value. 1612545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall llvm::Value *oldValue = EmitLoadOfScalar(dst); 1613f85e193739c953358c865005855253af4f68a497John McCall 1614f85e193739c953358c865005855253af4f68a497John McCall // Store. We do this before the release so that any deallocs won't 1615f85e193739c953358c865005855253af4f68a497John McCall // see the old value. 1616545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall EmitStoreOfScalar(newValue, dst); 1617f85e193739c953358c865005855253af4f68a497John McCall 1618f85e193739c953358c865005855253af4f68a497John McCall // Finally, release the old value. 1619f85e193739c953358c865005855253af4f68a497John McCall EmitARCRelease(oldValue, /*precise*/ false); 1620f85e193739c953358c865005855253af4f68a497John McCall 1621f85e193739c953358c865005855253af4f68a497John McCall return newValue; 1622f85e193739c953358c865005855253af4f68a497John McCall} 1623f85e193739c953358c865005855253af4f68a497John McCall 1624f85e193739c953358c865005855253af4f68a497John McCall/// Autorelease the given object. 1625f85e193739c953358c865005855253af4f68a497John McCall/// call i8* @objc_autorelease(i8* %value) 1626f85e193739c953358c865005855253af4f68a497John McCallllvm::Value *CodeGenFunction::EmitARCAutorelease(llvm::Value *value) { 1627f85e193739c953358c865005855253af4f68a497John McCall return emitARCValueOperation(*this, value, 1628f85e193739c953358c865005855253af4f68a497John McCall CGM.getARCEntrypoints().objc_autorelease, 1629f85e193739c953358c865005855253af4f68a497John McCall "objc_autorelease"); 1630f85e193739c953358c865005855253af4f68a497John McCall} 1631f85e193739c953358c865005855253af4f68a497John McCall 1632f85e193739c953358c865005855253af4f68a497John McCall/// Autorelease the given object. 1633f85e193739c953358c865005855253af4f68a497John McCall/// call i8* @objc_autoreleaseReturnValue(i8* %value) 1634f85e193739c953358c865005855253af4f68a497John McCallllvm::Value * 1635f85e193739c953358c865005855253af4f68a497John McCallCodeGenFunction::EmitARCAutoreleaseReturnValue(llvm::Value *value) { 1636f85e193739c953358c865005855253af4f68a497John McCall return emitARCValueOperation(*this, value, 1637f85e193739c953358c865005855253af4f68a497John McCall CGM.getARCEntrypoints().objc_autoreleaseReturnValue, 1638f85e193739c953358c865005855253af4f68a497John McCall "objc_autoreleaseReturnValue"); 1639f85e193739c953358c865005855253af4f68a497John McCall} 1640f85e193739c953358c865005855253af4f68a497John McCall 1641f85e193739c953358c865005855253af4f68a497John McCall/// Do a fused retain/autorelease of the given object. 1642f85e193739c953358c865005855253af4f68a497John McCall/// call i8* @objc_retainAutoreleaseReturnValue(i8* %value) 1643f85e193739c953358c865005855253af4f68a497John McCallllvm::Value * 1644f85e193739c953358c865005855253af4f68a497John McCallCodeGenFunction::EmitARCRetainAutoreleaseReturnValue(llvm::Value *value) { 1645f85e193739c953358c865005855253af4f68a497John McCall return emitARCValueOperation(*this, value, 1646f85e193739c953358c865005855253af4f68a497John McCall CGM.getARCEntrypoints().objc_retainAutoreleaseReturnValue, 1647f85e193739c953358c865005855253af4f68a497John McCall "objc_retainAutoreleaseReturnValue"); 1648f85e193739c953358c865005855253af4f68a497John McCall} 1649f85e193739c953358c865005855253af4f68a497John McCall 1650f85e193739c953358c865005855253af4f68a497John McCall/// Do a fused retain/autorelease of the given object. 1651f85e193739c953358c865005855253af4f68a497John McCall/// call i8* @objc_retainAutorelease(i8* %value) 1652f85e193739c953358c865005855253af4f68a497John McCall/// or 1653f85e193739c953358c865005855253af4f68a497John McCall/// %retain = call i8* @objc_retainBlock(i8* %value) 1654f85e193739c953358c865005855253af4f68a497John McCall/// call i8* @objc_autorelease(i8* %retain) 1655f85e193739c953358c865005855253af4f68a497John McCallllvm::Value *CodeGenFunction::EmitARCRetainAutorelease(QualType type, 1656f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *value) { 1657f85e193739c953358c865005855253af4f68a497John McCall if (!type->isBlockPointerType()) 1658f85e193739c953358c865005855253af4f68a497John McCall return EmitARCRetainAutoreleaseNonBlock(value); 1659f85e193739c953358c865005855253af4f68a497John McCall 1660f85e193739c953358c865005855253af4f68a497John McCall if (isa<llvm::ConstantPointerNull>(value)) return value; 1661f85e193739c953358c865005855253af4f68a497John McCall 16622acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *origType = value->getType(); 1663f85e193739c953358c865005855253af4f68a497John McCall value = Builder.CreateBitCast(value, Int8PtrTy); 1664f85e193739c953358c865005855253af4f68a497John McCall value = EmitARCRetainBlock(value); 1665f85e193739c953358c865005855253af4f68a497John McCall value = EmitARCAutorelease(value); 1666f85e193739c953358c865005855253af4f68a497John McCall return Builder.CreateBitCast(value, origType); 1667f85e193739c953358c865005855253af4f68a497John McCall} 1668f85e193739c953358c865005855253af4f68a497John McCall 1669f85e193739c953358c865005855253af4f68a497John McCall/// Do a fused retain/autorelease of the given object. 1670f85e193739c953358c865005855253af4f68a497John McCall/// call i8* @objc_retainAutorelease(i8* %value) 1671f85e193739c953358c865005855253af4f68a497John McCallllvm::Value * 1672f85e193739c953358c865005855253af4f68a497John McCallCodeGenFunction::EmitARCRetainAutoreleaseNonBlock(llvm::Value *value) { 1673f85e193739c953358c865005855253af4f68a497John McCall return emitARCValueOperation(*this, value, 1674f85e193739c953358c865005855253af4f68a497John McCall CGM.getARCEntrypoints().objc_retainAutorelease, 1675f85e193739c953358c865005855253af4f68a497John McCall "objc_retainAutorelease"); 1676f85e193739c953358c865005855253af4f68a497John McCall} 1677f85e193739c953358c865005855253af4f68a497John McCall 1678f85e193739c953358c865005855253af4f68a497John McCall/// i8* @objc_loadWeak(i8** %addr) 1679f85e193739c953358c865005855253af4f68a497John McCall/// Essentially objc_autorelease(objc_loadWeakRetained(addr)). 1680f85e193739c953358c865005855253af4f68a497John McCallllvm::Value *CodeGenFunction::EmitARCLoadWeak(llvm::Value *addr) { 1681f85e193739c953358c865005855253af4f68a497John McCall return emitARCLoadOperation(*this, addr, 1682f85e193739c953358c865005855253af4f68a497John McCall CGM.getARCEntrypoints().objc_loadWeak, 1683f85e193739c953358c865005855253af4f68a497John McCall "objc_loadWeak"); 1684f85e193739c953358c865005855253af4f68a497John McCall} 1685f85e193739c953358c865005855253af4f68a497John McCall 1686f85e193739c953358c865005855253af4f68a497John McCall/// i8* @objc_loadWeakRetained(i8** %addr) 1687f85e193739c953358c865005855253af4f68a497John McCallllvm::Value *CodeGenFunction::EmitARCLoadWeakRetained(llvm::Value *addr) { 1688f85e193739c953358c865005855253af4f68a497John McCall return emitARCLoadOperation(*this, addr, 1689f85e193739c953358c865005855253af4f68a497John McCall CGM.getARCEntrypoints().objc_loadWeakRetained, 1690f85e193739c953358c865005855253af4f68a497John McCall "objc_loadWeakRetained"); 1691f85e193739c953358c865005855253af4f68a497John McCall} 1692f85e193739c953358c865005855253af4f68a497John McCall 1693f85e193739c953358c865005855253af4f68a497John McCall/// i8* @objc_storeWeak(i8** %addr, i8* %value) 1694f85e193739c953358c865005855253af4f68a497John McCall/// Returns %value. 1695f85e193739c953358c865005855253af4f68a497John McCallllvm::Value *CodeGenFunction::EmitARCStoreWeak(llvm::Value *addr, 1696f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *value, 1697f85e193739c953358c865005855253af4f68a497John McCall bool ignored) { 1698f85e193739c953358c865005855253af4f68a497John McCall return emitARCStoreOperation(*this, addr, value, 1699f85e193739c953358c865005855253af4f68a497John McCall CGM.getARCEntrypoints().objc_storeWeak, 1700f85e193739c953358c865005855253af4f68a497John McCall "objc_storeWeak", ignored); 1701f85e193739c953358c865005855253af4f68a497John McCall} 1702f85e193739c953358c865005855253af4f68a497John McCall 1703f85e193739c953358c865005855253af4f68a497John McCall/// i8* @objc_initWeak(i8** %addr, i8* %value) 1704f85e193739c953358c865005855253af4f68a497John McCall/// Returns %value. %addr is known to not have a current weak entry. 1705f85e193739c953358c865005855253af4f68a497John McCall/// Essentially equivalent to: 1706f85e193739c953358c865005855253af4f68a497John McCall/// *addr = nil; objc_storeWeak(addr, value); 1707f85e193739c953358c865005855253af4f68a497John McCallvoid CodeGenFunction::EmitARCInitWeak(llvm::Value *addr, llvm::Value *value) { 1708f85e193739c953358c865005855253af4f68a497John McCall // If we're initializing to null, just write null to memory; no need 1709f85e193739c953358c865005855253af4f68a497John McCall // to get the runtime involved. But don't do this if optimization 1710f85e193739c953358c865005855253af4f68a497John McCall // is enabled, because accounting for this would make the optimizer 1711f85e193739c953358c865005855253af4f68a497John McCall // much more complicated. 1712f85e193739c953358c865005855253af4f68a497John McCall if (isa<llvm::ConstantPointerNull>(value) && 1713f85e193739c953358c865005855253af4f68a497John McCall CGM.getCodeGenOpts().OptimizationLevel == 0) { 1714f85e193739c953358c865005855253af4f68a497John McCall Builder.CreateStore(value, addr); 1715f85e193739c953358c865005855253af4f68a497John McCall return; 1716f85e193739c953358c865005855253af4f68a497John McCall } 1717f85e193739c953358c865005855253af4f68a497John McCall 1718f85e193739c953358c865005855253af4f68a497John McCall emitARCStoreOperation(*this, addr, value, 1719f85e193739c953358c865005855253af4f68a497John McCall CGM.getARCEntrypoints().objc_initWeak, 1720f85e193739c953358c865005855253af4f68a497John McCall "objc_initWeak", /*ignored*/ true); 1721f85e193739c953358c865005855253af4f68a497John McCall} 1722f85e193739c953358c865005855253af4f68a497John McCall 1723f85e193739c953358c865005855253af4f68a497John McCall/// void @objc_destroyWeak(i8** %addr) 1724f85e193739c953358c865005855253af4f68a497John McCall/// Essentially objc_storeWeak(addr, nil). 1725f85e193739c953358c865005855253af4f68a497John McCallvoid CodeGenFunction::EmitARCDestroyWeak(llvm::Value *addr) { 1726f85e193739c953358c865005855253af4f68a497John McCall llvm::Constant *&fn = CGM.getARCEntrypoints().objc_destroyWeak; 1727f85e193739c953358c865005855253af4f68a497John McCall if (!fn) { 17289cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner std::vector<llvm::Type*> args(1, Int8PtrPtrTy); 17292acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::FunctionType *fnType = 1730f85e193739c953358c865005855253af4f68a497John McCall llvm::FunctionType::get(Builder.getVoidTy(), args, false); 1731f85e193739c953358c865005855253af4f68a497John McCall fn = createARCRuntimeFunction(CGM, fnType, "objc_destroyWeak"); 1732f85e193739c953358c865005855253af4f68a497John McCall } 1733f85e193739c953358c865005855253af4f68a497John McCall 1734f85e193739c953358c865005855253af4f68a497John McCall // Cast the argument to 'id*'. 1735f85e193739c953358c865005855253af4f68a497John McCall addr = Builder.CreateBitCast(addr, Int8PtrPtrTy); 1736f85e193739c953358c865005855253af4f68a497John McCall 1737f85e193739c953358c865005855253af4f68a497John McCall llvm::CallInst *call = Builder.CreateCall(fn, addr); 1738f85e193739c953358c865005855253af4f68a497John McCall call->setDoesNotThrow(); 1739f85e193739c953358c865005855253af4f68a497John McCall} 1740f85e193739c953358c865005855253af4f68a497John McCall 1741f85e193739c953358c865005855253af4f68a497John McCall/// void @objc_moveWeak(i8** %dest, i8** %src) 1742f85e193739c953358c865005855253af4f68a497John McCall/// Disregards the current value in %dest. Leaves %src pointing to nothing. 1743f85e193739c953358c865005855253af4f68a497John McCall/// Essentially (objc_copyWeak(dest, src), objc_destroyWeak(src)). 1744f85e193739c953358c865005855253af4f68a497John McCallvoid CodeGenFunction::EmitARCMoveWeak(llvm::Value *dst, llvm::Value *src) { 1745f85e193739c953358c865005855253af4f68a497John McCall emitARCCopyOperation(*this, dst, src, 1746f85e193739c953358c865005855253af4f68a497John McCall CGM.getARCEntrypoints().objc_moveWeak, 1747f85e193739c953358c865005855253af4f68a497John McCall "objc_moveWeak"); 1748f85e193739c953358c865005855253af4f68a497John McCall} 1749f85e193739c953358c865005855253af4f68a497John McCall 1750f85e193739c953358c865005855253af4f68a497John McCall/// void @objc_copyWeak(i8** %dest, i8** %src) 1751f85e193739c953358c865005855253af4f68a497John McCall/// Disregards the current value in %dest. Essentially 1752f85e193739c953358c865005855253af4f68a497John McCall/// objc_release(objc_initWeak(dest, objc_readWeakRetained(src))) 1753f85e193739c953358c865005855253af4f68a497John McCallvoid CodeGenFunction::EmitARCCopyWeak(llvm::Value *dst, llvm::Value *src) { 1754f85e193739c953358c865005855253af4f68a497John McCall emitARCCopyOperation(*this, dst, src, 1755f85e193739c953358c865005855253af4f68a497John McCall CGM.getARCEntrypoints().objc_copyWeak, 1756f85e193739c953358c865005855253af4f68a497John McCall "objc_copyWeak"); 1757f85e193739c953358c865005855253af4f68a497John McCall} 1758f85e193739c953358c865005855253af4f68a497John McCall 1759f85e193739c953358c865005855253af4f68a497John McCall/// Produce the code to do a objc_autoreleasepool_push. 1760f85e193739c953358c865005855253af4f68a497John McCall/// call i8* @objc_autoreleasePoolPush(void) 1761f85e193739c953358c865005855253af4f68a497John McCallllvm::Value *CodeGenFunction::EmitObjCAutoreleasePoolPush() { 1762f85e193739c953358c865005855253af4f68a497John McCall llvm::Constant *&fn = CGM.getRREntrypoints().objc_autoreleasePoolPush; 1763f85e193739c953358c865005855253af4f68a497John McCall if (!fn) { 17642acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::FunctionType *fnType = 1765f85e193739c953358c865005855253af4f68a497John McCall llvm::FunctionType::get(Int8PtrTy, false); 1766f85e193739c953358c865005855253af4f68a497John McCall fn = createARCRuntimeFunction(CGM, fnType, "objc_autoreleasePoolPush"); 1767f85e193739c953358c865005855253af4f68a497John McCall } 1768f85e193739c953358c865005855253af4f68a497John McCall 1769f85e193739c953358c865005855253af4f68a497John McCall llvm::CallInst *call = Builder.CreateCall(fn); 1770f85e193739c953358c865005855253af4f68a497John McCall call->setDoesNotThrow(); 1771f85e193739c953358c865005855253af4f68a497John McCall 1772f85e193739c953358c865005855253af4f68a497John McCall return call; 1773f85e193739c953358c865005855253af4f68a497John McCall} 1774f85e193739c953358c865005855253af4f68a497John McCall 1775f85e193739c953358c865005855253af4f68a497John McCall/// Produce the code to do a primitive release. 1776f85e193739c953358c865005855253af4f68a497John McCall/// call void @objc_autoreleasePoolPop(i8* %ptr) 1777f85e193739c953358c865005855253af4f68a497John McCallvoid CodeGenFunction::EmitObjCAutoreleasePoolPop(llvm::Value *value) { 1778f85e193739c953358c865005855253af4f68a497John McCall assert(value->getType() == Int8PtrTy); 1779f85e193739c953358c865005855253af4f68a497John McCall 1780f85e193739c953358c865005855253af4f68a497John McCall llvm::Constant *&fn = CGM.getRREntrypoints().objc_autoreleasePoolPop; 1781f85e193739c953358c865005855253af4f68a497John McCall if (!fn) { 17829cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner std::vector<llvm::Type*> args(1, Int8PtrTy); 17832acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::FunctionType *fnType = 1784f85e193739c953358c865005855253af4f68a497John McCall llvm::FunctionType::get(Builder.getVoidTy(), args, false); 1785f85e193739c953358c865005855253af4f68a497John McCall 1786f85e193739c953358c865005855253af4f68a497John McCall // We don't want to use a weak import here; instead we should not 1787f85e193739c953358c865005855253af4f68a497John McCall // fall into this path. 1788f85e193739c953358c865005855253af4f68a497John McCall fn = createARCRuntimeFunction(CGM, fnType, "objc_autoreleasePoolPop"); 1789f85e193739c953358c865005855253af4f68a497John McCall } 1790f85e193739c953358c865005855253af4f68a497John McCall 1791f85e193739c953358c865005855253af4f68a497John McCall llvm::CallInst *call = Builder.CreateCall(fn, value); 1792f85e193739c953358c865005855253af4f68a497John McCall call->setDoesNotThrow(); 1793f85e193739c953358c865005855253af4f68a497John McCall} 1794f85e193739c953358c865005855253af4f68a497John McCall 1795f85e193739c953358c865005855253af4f68a497John McCall/// Produce the code to do an MRR version objc_autoreleasepool_push. 1796f85e193739c953358c865005855253af4f68a497John McCall/// Which is: [[NSAutoreleasePool alloc] init]; 1797f85e193739c953358c865005855253af4f68a497John McCall/// Where alloc is declared as: + (id) alloc; in NSAutoreleasePool class. 1798f85e193739c953358c865005855253af4f68a497John McCall/// init is declared as: - (id) init; in its NSObject super class. 1799f85e193739c953358c865005855253af4f68a497John McCall/// 1800f85e193739c953358c865005855253af4f68a497John McCallllvm::Value *CodeGenFunction::EmitObjCMRRAutoreleasePoolPush() { 1801f85e193739c953358c865005855253af4f68a497John McCall CGObjCRuntime &Runtime = CGM.getObjCRuntime(); 1802f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *Receiver = Runtime.EmitNSAutoreleasePoolClassRef(Builder); 1803f85e193739c953358c865005855253af4f68a497John McCall // [NSAutoreleasePool alloc] 1804f85e193739c953358c865005855253af4f68a497John McCall IdentifierInfo *II = &CGM.getContext().Idents.get("alloc"); 1805f85e193739c953358c865005855253af4f68a497John McCall Selector AllocSel = getContext().Selectors.getSelector(0, &II); 1806f85e193739c953358c865005855253af4f68a497John McCall CallArgList Args; 1807f85e193739c953358c865005855253af4f68a497John McCall RValue AllocRV = 1808f85e193739c953358c865005855253af4f68a497John McCall Runtime.GenerateMessageSend(*this, ReturnValueSlot(), 1809f85e193739c953358c865005855253af4f68a497John McCall getContext().getObjCIdType(), 1810f85e193739c953358c865005855253af4f68a497John McCall AllocSel, Receiver, Args); 1811f85e193739c953358c865005855253af4f68a497John McCall 1812f85e193739c953358c865005855253af4f68a497John McCall // [Receiver init] 1813f85e193739c953358c865005855253af4f68a497John McCall Receiver = AllocRV.getScalarVal(); 1814f85e193739c953358c865005855253af4f68a497John McCall II = &CGM.getContext().Idents.get("init"); 1815f85e193739c953358c865005855253af4f68a497John McCall Selector InitSel = getContext().Selectors.getSelector(0, &II); 1816f85e193739c953358c865005855253af4f68a497John McCall RValue InitRV = 1817f85e193739c953358c865005855253af4f68a497John McCall Runtime.GenerateMessageSend(*this, ReturnValueSlot(), 1818f85e193739c953358c865005855253af4f68a497John McCall getContext().getObjCIdType(), 1819f85e193739c953358c865005855253af4f68a497John McCall InitSel, Receiver, Args); 1820f85e193739c953358c865005855253af4f68a497John McCall return InitRV.getScalarVal(); 1821f85e193739c953358c865005855253af4f68a497John McCall} 1822f85e193739c953358c865005855253af4f68a497John McCall 1823f85e193739c953358c865005855253af4f68a497John McCall/// Produce the code to do a primitive release. 1824f85e193739c953358c865005855253af4f68a497John McCall/// [tmp drain]; 1825f85e193739c953358c865005855253af4f68a497John McCallvoid CodeGenFunction::EmitObjCMRRAutoreleasePoolPop(llvm::Value *Arg) { 1826f85e193739c953358c865005855253af4f68a497John McCall IdentifierInfo *II = &CGM.getContext().Idents.get("drain"); 1827f85e193739c953358c865005855253af4f68a497John McCall Selector DrainSel = getContext().Selectors.getSelector(0, &II); 1828f85e193739c953358c865005855253af4f68a497John McCall CallArgList Args; 1829f85e193739c953358c865005855253af4f68a497John McCall CGM.getObjCRuntime().GenerateMessageSend(*this, ReturnValueSlot(), 1830f85e193739c953358c865005855253af4f68a497John McCall getContext().VoidTy, DrainSel, Arg, Args); 1831f85e193739c953358c865005855253af4f68a497John McCall} 1832f85e193739c953358c865005855253af4f68a497John McCall 1833bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCallvoid CodeGenFunction::destroyARCStrongPrecise(CodeGenFunction &CGF, 1834bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall llvm::Value *addr, 1835bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall QualType type) { 1836bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall llvm::Value *ptr = CGF.Builder.CreateLoad(addr, "strongdestroy"); 1837bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall CGF.EmitARCRelease(ptr, /*precise*/ true); 1838bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall} 1839bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall 1840bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCallvoid CodeGenFunction::destroyARCStrongImprecise(CodeGenFunction &CGF, 1841bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall llvm::Value *addr, 1842bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall QualType type) { 1843bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall llvm::Value *ptr = CGF.Builder.CreateLoad(addr, "strongdestroy"); 1844bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall CGF.EmitARCRelease(ptr, /*precise*/ false); 1845bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall} 1846bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall 1847bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCallvoid CodeGenFunction::destroyARCWeak(CodeGenFunction &CGF, 1848bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall llvm::Value *addr, 1849bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall QualType type) { 1850bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall CGF.EmitARCDestroyWeak(addr); 1851bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall} 1852bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall 1853f85e193739c953358c865005855253af4f68a497John McCallnamespace { 1854f85e193739c953358c865005855253af4f68a497John McCall struct CallObjCAutoreleasePoolObject : EHScopeStack::Cleanup { 1855f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *Token; 1856f85e193739c953358c865005855253af4f68a497John McCall 1857f85e193739c953358c865005855253af4f68a497John McCall CallObjCAutoreleasePoolObject(llvm::Value *token) : Token(token) {} 1858f85e193739c953358c865005855253af4f68a497John McCall 1859ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall void Emit(CodeGenFunction &CGF, Flags flags) { 1860f85e193739c953358c865005855253af4f68a497John McCall CGF.EmitObjCAutoreleasePoolPop(Token); 1861f85e193739c953358c865005855253af4f68a497John McCall } 1862f85e193739c953358c865005855253af4f68a497John McCall }; 1863f85e193739c953358c865005855253af4f68a497John McCall struct CallObjCMRRAutoreleasePoolObject : EHScopeStack::Cleanup { 1864f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *Token; 1865f85e193739c953358c865005855253af4f68a497John McCall 1866f85e193739c953358c865005855253af4f68a497John McCall CallObjCMRRAutoreleasePoolObject(llvm::Value *token) : Token(token) {} 1867f85e193739c953358c865005855253af4f68a497John McCall 1868ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall void Emit(CodeGenFunction &CGF, Flags flags) { 1869f85e193739c953358c865005855253af4f68a497John McCall CGF.EmitObjCMRRAutoreleasePoolPop(Token); 1870f85e193739c953358c865005855253af4f68a497John McCall } 1871f85e193739c953358c865005855253af4f68a497John McCall }; 1872f85e193739c953358c865005855253af4f68a497John McCall} 1873f85e193739c953358c865005855253af4f68a497John McCall 1874f85e193739c953358c865005855253af4f68a497John McCallvoid CodeGenFunction::EmitObjCAutoreleasePoolCleanup(llvm::Value *Ptr) { 1875f85e193739c953358c865005855253af4f68a497John McCall if (CGM.getLangOptions().ObjCAutoRefCount) 1876f85e193739c953358c865005855253af4f68a497John McCall EHStack.pushCleanup<CallObjCAutoreleasePoolObject>(NormalCleanup, Ptr); 1877f85e193739c953358c865005855253af4f68a497John McCall else 1878f85e193739c953358c865005855253af4f68a497John McCall EHStack.pushCleanup<CallObjCMRRAutoreleasePoolObject>(NormalCleanup, Ptr); 1879f85e193739c953358c865005855253af4f68a497John McCall} 1880f85e193739c953358c865005855253af4f68a497John McCall 1881f85e193739c953358c865005855253af4f68a497John McCallstatic TryEmitResult tryEmitARCRetainLoadOfScalar(CodeGenFunction &CGF, 1882f85e193739c953358c865005855253af4f68a497John McCall LValue lvalue, 1883f85e193739c953358c865005855253af4f68a497John McCall QualType type) { 1884f85e193739c953358c865005855253af4f68a497John McCall switch (type.getObjCLifetime()) { 1885f85e193739c953358c865005855253af4f68a497John McCall case Qualifiers::OCL_None: 1886f85e193739c953358c865005855253af4f68a497John McCall case Qualifiers::OCL_ExplicitNone: 1887f85e193739c953358c865005855253af4f68a497John McCall case Qualifiers::OCL_Strong: 1888f85e193739c953358c865005855253af4f68a497John McCall case Qualifiers::OCL_Autoreleasing: 1889545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall return TryEmitResult(CGF.EmitLoadOfLValue(lvalue).getScalarVal(), 1890f85e193739c953358c865005855253af4f68a497John McCall false); 1891f85e193739c953358c865005855253af4f68a497John McCall 1892f85e193739c953358c865005855253af4f68a497John McCall case Qualifiers::OCL_Weak: 1893f85e193739c953358c865005855253af4f68a497John McCall return TryEmitResult(CGF.EmitARCLoadWeakRetained(lvalue.getAddress()), 1894f85e193739c953358c865005855253af4f68a497John McCall true); 1895f85e193739c953358c865005855253af4f68a497John McCall } 1896f85e193739c953358c865005855253af4f68a497John McCall 1897f85e193739c953358c865005855253af4f68a497John McCall llvm_unreachable("impossible lifetime!"); 1898f85e193739c953358c865005855253af4f68a497John McCall return TryEmitResult(); 1899f85e193739c953358c865005855253af4f68a497John McCall} 1900f85e193739c953358c865005855253af4f68a497John McCall 1901f85e193739c953358c865005855253af4f68a497John McCallstatic TryEmitResult tryEmitARCRetainLoadOfScalar(CodeGenFunction &CGF, 1902f85e193739c953358c865005855253af4f68a497John McCall const Expr *e) { 1903f85e193739c953358c865005855253af4f68a497John McCall e = e->IgnoreParens(); 1904f85e193739c953358c865005855253af4f68a497John McCall QualType type = e->getType(); 1905f85e193739c953358c865005855253af4f68a497John McCall 1906f85e193739c953358c865005855253af4f68a497John McCall // As a very special optimization, in ARC++, if the l-value is the 1907f85e193739c953358c865005855253af4f68a497John McCall // result of a non-volatile assignment, do a simple retain of the 1908f85e193739c953358c865005855253af4f68a497John McCall // result of the call to objc_storeWeak instead of reloading. 1909f85e193739c953358c865005855253af4f68a497John McCall if (CGF.getLangOptions().CPlusPlus && 1910f85e193739c953358c865005855253af4f68a497John McCall !type.isVolatileQualified() && 1911f85e193739c953358c865005855253af4f68a497John McCall type.getObjCLifetime() == Qualifiers::OCL_Weak && 1912f85e193739c953358c865005855253af4f68a497John McCall isa<BinaryOperator>(e) && 1913f85e193739c953358c865005855253af4f68a497John McCall cast<BinaryOperator>(e)->getOpcode() == BO_Assign) 1914f85e193739c953358c865005855253af4f68a497John McCall return TryEmitResult(CGF.EmitScalarExpr(e), false); 1915f85e193739c953358c865005855253af4f68a497John McCall 1916f85e193739c953358c865005855253af4f68a497John McCall return tryEmitARCRetainLoadOfScalar(CGF, CGF.EmitLValue(e), type); 1917f85e193739c953358c865005855253af4f68a497John McCall} 1918f85e193739c953358c865005855253af4f68a497John McCall 1919f85e193739c953358c865005855253af4f68a497John McCallstatic llvm::Value *emitARCRetainAfterCall(CodeGenFunction &CGF, 1920f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *value); 1921f85e193739c953358c865005855253af4f68a497John McCall 1922f85e193739c953358c865005855253af4f68a497John McCall/// Given that the given expression is some sort of call (which does 1923f85e193739c953358c865005855253af4f68a497John McCall/// not return retained), emit a retain following it. 1924f85e193739c953358c865005855253af4f68a497John McCallstatic llvm::Value *emitARCRetainCall(CodeGenFunction &CGF, const Expr *e) { 1925f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *value = CGF.EmitScalarExpr(e); 1926f85e193739c953358c865005855253af4f68a497John McCall return emitARCRetainAfterCall(CGF, value); 1927f85e193739c953358c865005855253af4f68a497John McCall} 1928f85e193739c953358c865005855253af4f68a497John McCall 1929f85e193739c953358c865005855253af4f68a497John McCallstatic llvm::Value *emitARCRetainAfterCall(CodeGenFunction &CGF, 1930f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *value) { 1931f85e193739c953358c865005855253af4f68a497John McCall if (llvm::CallInst *call = dyn_cast<llvm::CallInst>(value)) { 1932f85e193739c953358c865005855253af4f68a497John McCall CGBuilderTy::InsertPoint ip = CGF.Builder.saveIP(); 1933f85e193739c953358c865005855253af4f68a497John McCall 1934f85e193739c953358c865005855253af4f68a497John McCall // Place the retain immediately following the call. 1935f85e193739c953358c865005855253af4f68a497John McCall CGF.Builder.SetInsertPoint(call->getParent(), 1936f85e193739c953358c865005855253af4f68a497John McCall ++llvm::BasicBlock::iterator(call)); 1937f85e193739c953358c865005855253af4f68a497John McCall value = CGF.EmitARCRetainAutoreleasedReturnValue(value); 1938f85e193739c953358c865005855253af4f68a497John McCall 1939f85e193739c953358c865005855253af4f68a497John McCall CGF.Builder.restoreIP(ip); 1940f85e193739c953358c865005855253af4f68a497John McCall return value; 1941f85e193739c953358c865005855253af4f68a497John McCall } else if (llvm::InvokeInst *invoke = dyn_cast<llvm::InvokeInst>(value)) { 1942f85e193739c953358c865005855253af4f68a497John McCall CGBuilderTy::InsertPoint ip = CGF.Builder.saveIP(); 1943f85e193739c953358c865005855253af4f68a497John McCall 1944f85e193739c953358c865005855253af4f68a497John McCall // Place the retain at the beginning of the normal destination block. 1945f85e193739c953358c865005855253af4f68a497John McCall llvm::BasicBlock *BB = invoke->getNormalDest(); 1946f85e193739c953358c865005855253af4f68a497John McCall CGF.Builder.SetInsertPoint(BB, BB->begin()); 1947f85e193739c953358c865005855253af4f68a497John McCall value = CGF.EmitARCRetainAutoreleasedReturnValue(value); 1948f85e193739c953358c865005855253af4f68a497John McCall 1949f85e193739c953358c865005855253af4f68a497John McCall CGF.Builder.restoreIP(ip); 1950f85e193739c953358c865005855253af4f68a497John McCall return value; 1951f85e193739c953358c865005855253af4f68a497John McCall 1952f85e193739c953358c865005855253af4f68a497John McCall // Bitcasts can arise because of related-result returns. Rewrite 1953f85e193739c953358c865005855253af4f68a497John McCall // the operand. 1954f85e193739c953358c865005855253af4f68a497John McCall } else if (llvm::BitCastInst *bitcast = dyn_cast<llvm::BitCastInst>(value)) { 1955f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *operand = bitcast->getOperand(0); 1956f85e193739c953358c865005855253af4f68a497John McCall operand = emitARCRetainAfterCall(CGF, operand); 1957f85e193739c953358c865005855253af4f68a497John McCall bitcast->setOperand(0, operand); 1958f85e193739c953358c865005855253af4f68a497John McCall return bitcast; 1959f85e193739c953358c865005855253af4f68a497John McCall 1960f85e193739c953358c865005855253af4f68a497John McCall // Generic fall-back case. 1961f85e193739c953358c865005855253af4f68a497John McCall } else { 1962f85e193739c953358c865005855253af4f68a497John McCall // Retain using the non-block variant: we never need to do a copy 1963f85e193739c953358c865005855253af4f68a497John McCall // of a block that's been returned to us. 1964f85e193739c953358c865005855253af4f68a497John McCall return CGF.EmitARCRetainNonBlock(value); 1965f85e193739c953358c865005855253af4f68a497John McCall } 1966f85e193739c953358c865005855253af4f68a497John McCall} 1967f85e193739c953358c865005855253af4f68a497John McCall 1968f85e193739c953358c865005855253af4f68a497John McCallstatic TryEmitResult 1969f85e193739c953358c865005855253af4f68a497John McCalltryEmitARCRetainScalarExpr(CodeGenFunction &CGF, const Expr *e) { 1970f85e193739c953358c865005855253af4f68a497John McCall // The desired result type, if it differs from the type of the 1971f85e193739c953358c865005855253af4f68a497John McCall // ultimate opaque expression. 19722acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *resultType = 0; 1973f85e193739c953358c865005855253af4f68a497John McCall 1974d1bd98a2c239d2a730b07f7c1b2c8c8718eaeac8Douglas Gregor // If we're loading retained from a __strong xvalue, we can avoid 1975d1bd98a2c239d2a730b07f7c1b2c8c8718eaeac8Douglas Gregor // an extra retain/release pair by zeroing out the source of this 1976d1bd98a2c239d2a730b07f7c1b2c8c8718eaeac8Douglas Gregor // "move" operation. 1977df7b091c58ccdb402a32bfbde9c506074dba5f3dJohn McCall if (e->isXValue() && !e->getType().isConstQualified() && 1978d1bd98a2c239d2a730b07f7c1b2c8c8718eaeac8Douglas Gregor e->getType().getObjCLifetime() == Qualifiers::OCL_Strong) { 1979d1bd98a2c239d2a730b07f7c1b2c8c8718eaeac8Douglas Gregor // Emit the lvalue 1980d1bd98a2c239d2a730b07f7c1b2c8c8718eaeac8Douglas Gregor LValue lv = CGF.EmitLValue(e); 1981d1bd98a2c239d2a730b07f7c1b2c8c8718eaeac8Douglas Gregor 1982d1bd98a2c239d2a730b07f7c1b2c8c8718eaeac8Douglas Gregor // Load the object pointer and cast it to the appropriate type. 1983d1bd98a2c239d2a730b07f7c1b2c8c8718eaeac8Douglas Gregor QualType exprType = e->getType(); 1984545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall llvm::Value *result = CGF.EmitLoadOfLValue(lv).getScalarVal(); 1985d1bd98a2c239d2a730b07f7c1b2c8c8718eaeac8Douglas Gregor 1986d1bd98a2c239d2a730b07f7c1b2c8c8718eaeac8Douglas Gregor if (resultType) 1987d1bd98a2c239d2a730b07f7c1b2c8c8718eaeac8Douglas Gregor result = CGF.Builder.CreateBitCast(result, resultType); 1988d1bd98a2c239d2a730b07f7c1b2c8c8718eaeac8Douglas Gregor 1989d1bd98a2c239d2a730b07f7c1b2c8c8718eaeac8Douglas Gregor // Set the source pointer to NULL. 1990d1bd98a2c239d2a730b07f7c1b2c8c8718eaeac8Douglas Gregor llvm::Value *null 1991d1bd98a2c239d2a730b07f7c1b2c8c8718eaeac8Douglas Gregor = llvm::ConstantPointerNull::get( 1992d1bd98a2c239d2a730b07f7c1b2c8c8718eaeac8Douglas Gregor cast<llvm::PointerType>(CGF.ConvertType(exprType))); 1993545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall CGF.EmitStoreOfScalar(null, lv); 1994d1bd98a2c239d2a730b07f7c1b2c8c8718eaeac8Douglas Gregor 1995d1bd98a2c239d2a730b07f7c1b2c8c8718eaeac8Douglas Gregor return TryEmitResult(result, true); 1996d1bd98a2c239d2a730b07f7c1b2c8c8718eaeac8Douglas Gregor } 1997d1bd98a2c239d2a730b07f7c1b2c8c8718eaeac8Douglas Gregor 1998f85e193739c953358c865005855253af4f68a497John McCall while (true) { 1999f85e193739c953358c865005855253af4f68a497John McCall e = e->IgnoreParens(); 2000f85e193739c953358c865005855253af4f68a497John McCall 2001f85e193739c953358c865005855253af4f68a497John McCall // There's a break at the end of this if-chain; anything 2002f85e193739c953358c865005855253af4f68a497John McCall // that wants to keep looping has to explicitly continue. 2003f85e193739c953358c865005855253af4f68a497John McCall if (const CastExpr *ce = dyn_cast<CastExpr>(e)) { 2004f85e193739c953358c865005855253af4f68a497John McCall switch (ce->getCastKind()) { 2005f85e193739c953358c865005855253af4f68a497John McCall // No-op casts don't change the type, so we just ignore them. 2006f85e193739c953358c865005855253af4f68a497John McCall case CK_NoOp: 2007f85e193739c953358c865005855253af4f68a497John McCall e = ce->getSubExpr(); 2008f85e193739c953358c865005855253af4f68a497John McCall continue; 2009f85e193739c953358c865005855253af4f68a497John McCall 2010f85e193739c953358c865005855253af4f68a497John McCall case CK_LValueToRValue: { 2011f85e193739c953358c865005855253af4f68a497John McCall TryEmitResult loadResult 2012f85e193739c953358c865005855253af4f68a497John McCall = tryEmitARCRetainLoadOfScalar(CGF, ce->getSubExpr()); 2013f85e193739c953358c865005855253af4f68a497John McCall if (resultType) { 2014f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *value = loadResult.getPointer(); 2015f85e193739c953358c865005855253af4f68a497John McCall value = CGF.Builder.CreateBitCast(value, resultType); 2016f85e193739c953358c865005855253af4f68a497John McCall loadResult.setPointer(value); 2017f85e193739c953358c865005855253af4f68a497John McCall } 2018f85e193739c953358c865005855253af4f68a497John McCall return loadResult; 2019f85e193739c953358c865005855253af4f68a497John McCall } 2020f85e193739c953358c865005855253af4f68a497John McCall 2021f85e193739c953358c865005855253af4f68a497John McCall // These casts can change the type, so remember that and 2022f85e193739c953358c865005855253af4f68a497John McCall // soldier on. We only need to remember the outermost such 2023f85e193739c953358c865005855253af4f68a497John McCall // cast, though. 2024f85e193739c953358c865005855253af4f68a497John McCall case CK_AnyPointerToObjCPointerCast: 2025f85e193739c953358c865005855253af4f68a497John McCall case CK_AnyPointerToBlockPointerCast: 2026f85e193739c953358c865005855253af4f68a497John McCall case CK_BitCast: 2027f85e193739c953358c865005855253af4f68a497John McCall if (!resultType) 2028f85e193739c953358c865005855253af4f68a497John McCall resultType = CGF.ConvertType(ce->getType()); 2029f85e193739c953358c865005855253af4f68a497John McCall e = ce->getSubExpr(); 2030f85e193739c953358c865005855253af4f68a497John McCall assert(e->getType()->hasPointerRepresentation()); 2031f85e193739c953358c865005855253af4f68a497John McCall continue; 2032f85e193739c953358c865005855253af4f68a497John McCall 2033f85e193739c953358c865005855253af4f68a497John McCall // For consumptions, just emit the subexpression and thus elide 2034f85e193739c953358c865005855253af4f68a497John McCall // the retain/release pair. 2035f85e193739c953358c865005855253af4f68a497John McCall case CK_ObjCConsumeObject: { 2036f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *result = CGF.EmitScalarExpr(ce->getSubExpr()); 2037f85e193739c953358c865005855253af4f68a497John McCall if (resultType) result = CGF.Builder.CreateBitCast(result, resultType); 2038f85e193739c953358c865005855253af4f68a497John McCall return TryEmitResult(result, true); 2039f85e193739c953358c865005855253af4f68a497John McCall } 2040f85e193739c953358c865005855253af4f68a497John McCall 20417e5e5f4cc36fe50f46ad76dca7a266434c94f475John McCall // For reclaims, emit the subexpression as a retained call and 20427e5e5f4cc36fe50f46ad76dca7a266434c94f475John McCall // skip the consumption. 20437e5e5f4cc36fe50f46ad76dca7a266434c94f475John McCall case CK_ObjCReclaimReturnedObject: { 20447e5e5f4cc36fe50f46ad76dca7a266434c94f475John McCall llvm::Value *result = emitARCRetainCall(CGF, ce->getSubExpr()); 20457e5e5f4cc36fe50f46ad76dca7a266434c94f475John McCall if (resultType) result = CGF.Builder.CreateBitCast(result, resultType); 20467e5e5f4cc36fe50f46ad76dca7a266434c94f475John McCall return TryEmitResult(result, true); 20477e5e5f4cc36fe50f46ad76dca7a266434c94f475John McCall } 20487e5e5f4cc36fe50f46ad76dca7a266434c94f475John McCall 2049f85e193739c953358c865005855253af4f68a497John McCall case CK_GetObjCProperty: { 2050f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *result = emitARCRetainCall(CGF, ce); 2051f85e193739c953358c865005855253af4f68a497John McCall if (resultType) result = CGF.Builder.CreateBitCast(result, resultType); 2052f85e193739c953358c865005855253af4f68a497John McCall return TryEmitResult(result, true); 2053f85e193739c953358c865005855253af4f68a497John McCall } 2054f85e193739c953358c865005855253af4f68a497John McCall 2055f85e193739c953358c865005855253af4f68a497John McCall default: 2056f85e193739c953358c865005855253af4f68a497John McCall break; 2057f85e193739c953358c865005855253af4f68a497John McCall } 2058f85e193739c953358c865005855253af4f68a497John McCall 2059f85e193739c953358c865005855253af4f68a497John McCall // Skip __extension__. 2060f85e193739c953358c865005855253af4f68a497John McCall } else if (const UnaryOperator *op = dyn_cast<UnaryOperator>(e)) { 2061f85e193739c953358c865005855253af4f68a497John McCall if (op->getOpcode() == UO_Extension) { 2062f85e193739c953358c865005855253af4f68a497John McCall e = op->getSubExpr(); 2063f85e193739c953358c865005855253af4f68a497John McCall continue; 2064f85e193739c953358c865005855253af4f68a497John McCall } 2065f85e193739c953358c865005855253af4f68a497John McCall 2066f85e193739c953358c865005855253af4f68a497John McCall // For calls and message sends, use the retained-call logic. 2067f85e193739c953358c865005855253af4f68a497John McCall // Delegate inits are a special case in that they're the only 2068f85e193739c953358c865005855253af4f68a497John McCall // returns-retained expression that *isn't* surrounded by 2069f85e193739c953358c865005855253af4f68a497John McCall // a consume. 2070f85e193739c953358c865005855253af4f68a497John McCall } else if (isa<CallExpr>(e) || 2071f85e193739c953358c865005855253af4f68a497John McCall (isa<ObjCMessageExpr>(e) && 2072f85e193739c953358c865005855253af4f68a497John McCall !cast<ObjCMessageExpr>(e)->isDelegateInitCall())) { 2073f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *result = emitARCRetainCall(CGF, e); 2074f85e193739c953358c865005855253af4f68a497John McCall if (resultType) result = CGF.Builder.CreateBitCast(result, resultType); 2075f85e193739c953358c865005855253af4f68a497John McCall return TryEmitResult(result, true); 2076f85e193739c953358c865005855253af4f68a497John McCall } 2077f85e193739c953358c865005855253af4f68a497John McCall 2078f85e193739c953358c865005855253af4f68a497John McCall // Conservatively halt the search at any other expression kind. 2079f85e193739c953358c865005855253af4f68a497John McCall break; 2080f85e193739c953358c865005855253af4f68a497John McCall } 2081f85e193739c953358c865005855253af4f68a497John McCall 2082f85e193739c953358c865005855253af4f68a497John McCall // We didn't find an obvious production, so emit what we've got and 2083f85e193739c953358c865005855253af4f68a497John McCall // tell the caller that we didn't manage to retain. 2084f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *result = CGF.EmitScalarExpr(e); 2085f85e193739c953358c865005855253af4f68a497John McCall if (resultType) result = CGF.Builder.CreateBitCast(result, resultType); 2086f85e193739c953358c865005855253af4f68a497John McCall return TryEmitResult(result, false); 2087f85e193739c953358c865005855253af4f68a497John McCall} 2088f85e193739c953358c865005855253af4f68a497John McCall 2089f85e193739c953358c865005855253af4f68a497John McCallstatic llvm::Value *emitARCRetainLoadOfScalar(CodeGenFunction &CGF, 2090f85e193739c953358c865005855253af4f68a497John McCall LValue lvalue, 2091f85e193739c953358c865005855253af4f68a497John McCall QualType type) { 2092f85e193739c953358c865005855253af4f68a497John McCall TryEmitResult result = tryEmitARCRetainLoadOfScalar(CGF, lvalue, type); 2093f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *value = result.getPointer(); 2094f85e193739c953358c865005855253af4f68a497John McCall if (!result.getInt()) 2095f85e193739c953358c865005855253af4f68a497John McCall value = CGF.EmitARCRetain(type, value); 2096f85e193739c953358c865005855253af4f68a497John McCall return value; 2097f85e193739c953358c865005855253af4f68a497John McCall} 2098f85e193739c953358c865005855253af4f68a497John McCall 2099f85e193739c953358c865005855253af4f68a497John McCall/// EmitARCRetainScalarExpr - Semantically equivalent to 2100f85e193739c953358c865005855253af4f68a497John McCall/// EmitARCRetainObject(e->getType(), EmitScalarExpr(e)), but making a 2101f85e193739c953358c865005855253af4f68a497John McCall/// best-effort attempt to peephole expressions that naturally produce 2102f85e193739c953358c865005855253af4f68a497John McCall/// retained objects. 2103f85e193739c953358c865005855253af4f68a497John McCallllvm::Value *CodeGenFunction::EmitARCRetainScalarExpr(const Expr *e) { 2104f85e193739c953358c865005855253af4f68a497John McCall TryEmitResult result = tryEmitARCRetainScalarExpr(*this, e); 2105f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *value = result.getPointer(); 2106f85e193739c953358c865005855253af4f68a497John McCall if (!result.getInt()) 2107f85e193739c953358c865005855253af4f68a497John McCall value = EmitARCRetain(e->getType(), value); 2108f85e193739c953358c865005855253af4f68a497John McCall return value; 2109f85e193739c953358c865005855253af4f68a497John McCall} 2110f85e193739c953358c865005855253af4f68a497John McCall 2111f85e193739c953358c865005855253af4f68a497John McCallllvm::Value * 2112f85e193739c953358c865005855253af4f68a497John McCallCodeGenFunction::EmitARCRetainAutoreleaseScalarExpr(const Expr *e) { 2113f85e193739c953358c865005855253af4f68a497John McCall TryEmitResult result = tryEmitARCRetainScalarExpr(*this, e); 2114f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *value = result.getPointer(); 2115f85e193739c953358c865005855253af4f68a497John McCall if (result.getInt()) 2116f85e193739c953358c865005855253af4f68a497John McCall value = EmitARCAutorelease(value); 2117f85e193739c953358c865005855253af4f68a497John McCall else 2118f85e193739c953358c865005855253af4f68a497John McCall value = EmitARCRetainAutorelease(e->getType(), value); 2119f85e193739c953358c865005855253af4f68a497John McCall return value; 2120f85e193739c953358c865005855253af4f68a497John McCall} 2121f85e193739c953358c865005855253af4f68a497John McCall 2122f85e193739c953358c865005855253af4f68a497John McCallstd::pair<LValue,llvm::Value*> 2123f85e193739c953358c865005855253af4f68a497John McCallCodeGenFunction::EmitARCStoreStrong(const BinaryOperator *e, 2124f85e193739c953358c865005855253af4f68a497John McCall bool ignored) { 2125f85e193739c953358c865005855253af4f68a497John McCall // Evaluate the RHS first. 2126f85e193739c953358c865005855253af4f68a497John McCall TryEmitResult result = tryEmitARCRetainScalarExpr(*this, e->getRHS()); 2127f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *value = result.getPointer(); 2128f85e193739c953358c865005855253af4f68a497John McCall 2129f85e193739c953358c865005855253af4f68a497John McCall LValue lvalue = EmitLValue(e->getLHS()); 2130f85e193739c953358c865005855253af4f68a497John McCall 2131f85e193739c953358c865005855253af4f68a497John McCall // If the RHS was emitted retained, expand this. 2132f85e193739c953358c865005855253af4f68a497John McCall if (result.getInt()) { 2133f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *oldValue = 2134f85e193739c953358c865005855253af4f68a497John McCall EmitLoadOfScalar(lvalue.getAddress(), lvalue.isVolatileQualified(), 2135f85e193739c953358c865005855253af4f68a497John McCall lvalue.getAlignment(), e->getType(), 2136f85e193739c953358c865005855253af4f68a497John McCall lvalue.getTBAAInfo()); 2137f85e193739c953358c865005855253af4f68a497John McCall EmitStoreOfScalar(value, lvalue.getAddress(), 2138f85e193739c953358c865005855253af4f68a497John McCall lvalue.isVolatileQualified(), lvalue.getAlignment(), 2139f85e193739c953358c865005855253af4f68a497John McCall e->getType(), lvalue.getTBAAInfo()); 2140f85e193739c953358c865005855253af4f68a497John McCall EmitARCRelease(oldValue, /*precise*/ false); 2141f85e193739c953358c865005855253af4f68a497John McCall } else { 2142545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall value = EmitARCStoreStrong(lvalue, value, ignored); 2143f85e193739c953358c865005855253af4f68a497John McCall } 2144f85e193739c953358c865005855253af4f68a497John McCall 2145f85e193739c953358c865005855253af4f68a497John McCall return std::pair<LValue,llvm::Value*>(lvalue, value); 2146f85e193739c953358c865005855253af4f68a497John McCall} 2147f85e193739c953358c865005855253af4f68a497John McCall 2148f85e193739c953358c865005855253af4f68a497John McCallstd::pair<LValue,llvm::Value*> 2149f85e193739c953358c865005855253af4f68a497John McCallCodeGenFunction::EmitARCStoreAutoreleasing(const BinaryOperator *e) { 2150f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *value = EmitARCRetainAutoreleaseScalarExpr(e->getRHS()); 2151f85e193739c953358c865005855253af4f68a497John McCall LValue lvalue = EmitLValue(e->getLHS()); 2152f85e193739c953358c865005855253af4f68a497John McCall 2153f85e193739c953358c865005855253af4f68a497John McCall EmitStoreOfScalar(value, lvalue.getAddress(), 2154f85e193739c953358c865005855253af4f68a497John McCall lvalue.isVolatileQualified(), lvalue.getAlignment(), 2155f85e193739c953358c865005855253af4f68a497John McCall e->getType(), lvalue.getTBAAInfo()); 2156f85e193739c953358c865005855253af4f68a497John McCall 2157f85e193739c953358c865005855253af4f68a497John McCall return std::pair<LValue,llvm::Value*>(lvalue, value); 2158f85e193739c953358c865005855253af4f68a497John McCall} 2159f85e193739c953358c865005855253af4f68a497John McCall 2160f85e193739c953358c865005855253af4f68a497John McCallvoid CodeGenFunction::EmitObjCAutoreleasePoolStmt( 2161f85e193739c953358c865005855253af4f68a497John McCall const ObjCAutoreleasePoolStmt &ARPS) { 2162f85e193739c953358c865005855253af4f68a497John McCall const Stmt *subStmt = ARPS.getSubStmt(); 2163f85e193739c953358c865005855253af4f68a497John McCall const CompoundStmt &S = cast<CompoundStmt>(*subStmt); 2164f85e193739c953358c865005855253af4f68a497John McCall 2165f85e193739c953358c865005855253af4f68a497John McCall CGDebugInfo *DI = getDebugInfo(); 2166f85e193739c953358c865005855253af4f68a497John McCall if (DI) { 2167f85e193739c953358c865005855253af4f68a497John McCall DI->setLocation(S.getLBracLoc()); 2168f85e193739c953358c865005855253af4f68a497John McCall DI->EmitRegionStart(Builder); 2169f85e193739c953358c865005855253af4f68a497John McCall } 2170f85e193739c953358c865005855253af4f68a497John McCall 2171f85e193739c953358c865005855253af4f68a497John McCall // Keep track of the current cleanup stack depth. 2172f85e193739c953358c865005855253af4f68a497John McCall RunCleanupsScope Scope(*this); 21739f084a3166b684573ba49df28fc5792bc37d92e1John McCall if (CGM.getCodeGenOpts().ObjCRuntimeHasARC) { 2174f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *token = EmitObjCAutoreleasePoolPush(); 2175f85e193739c953358c865005855253af4f68a497John McCall EHStack.pushCleanup<CallObjCAutoreleasePoolObject>(NormalCleanup, token); 2176f85e193739c953358c865005855253af4f68a497John McCall } else { 2177f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *token = EmitObjCMRRAutoreleasePoolPush(); 2178f85e193739c953358c865005855253af4f68a497John McCall EHStack.pushCleanup<CallObjCMRRAutoreleasePoolObject>(NormalCleanup, token); 2179f85e193739c953358c865005855253af4f68a497John McCall } 2180f85e193739c953358c865005855253af4f68a497John McCall 2181f85e193739c953358c865005855253af4f68a497John McCall for (CompoundStmt::const_body_iterator I = S.body_begin(), 2182f85e193739c953358c865005855253af4f68a497John McCall E = S.body_end(); I != E; ++I) 2183f85e193739c953358c865005855253af4f68a497John McCall EmitStmt(*I); 2184f85e193739c953358c865005855253af4f68a497John McCall 2185f85e193739c953358c865005855253af4f68a497John McCall if (DI) { 2186f85e193739c953358c865005855253af4f68a497John McCall DI->setLocation(S.getRBracLoc()); 2187f85e193739c953358c865005855253af4f68a497John McCall DI->EmitRegionEnd(Builder); 2188f85e193739c953358c865005855253af4f68a497John McCall } 2189f85e193739c953358c865005855253af4f68a497John McCall} 21900c24c808e4dce43e88abf2d5f98546b901bd4315John McCall 21910c24c808e4dce43e88abf2d5f98546b901bd4315John McCall/// EmitExtendGCLifetime - Given a pointer to an Objective-C object, 21920c24c808e4dce43e88abf2d5f98546b901bd4315John McCall/// make sure it survives garbage collection until this point. 21930c24c808e4dce43e88abf2d5f98546b901bd4315John McCallvoid CodeGenFunction::EmitExtendGCLifetime(llvm::Value *object) { 21940c24c808e4dce43e88abf2d5f98546b901bd4315John McCall // We just use an inline assembly. 21959cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *paramTypes[] = { VoidPtrTy }; 21960c24c808e4dce43e88abf2d5f98546b901bd4315John McCall llvm::FunctionType *extenderType 21970c24c808e4dce43e88abf2d5f98546b901bd4315John McCall = llvm::FunctionType::get(VoidTy, paramTypes, /*variadic*/ false); 21980c24c808e4dce43e88abf2d5f98546b901bd4315John McCall llvm::Value *extender 21990c24c808e4dce43e88abf2d5f98546b901bd4315John McCall = llvm::InlineAsm::get(extenderType, 22000c24c808e4dce43e88abf2d5f98546b901bd4315John McCall /* assembly */ "", 22010c24c808e4dce43e88abf2d5f98546b901bd4315John McCall /* constraints */ "r", 22020c24c808e4dce43e88abf2d5f98546b901bd4315John McCall /* side effects */ true); 22030c24c808e4dce43e88abf2d5f98546b901bd4315John McCall 22040c24c808e4dce43e88abf2d5f98546b901bd4315John McCall object = Builder.CreateBitCast(object, VoidPtrTy); 22050c24c808e4dce43e88abf2d5f98546b901bd4315John McCall Builder.CreateCall(extender, object)->setDoesNotThrow(); 22060c24c808e4dce43e88abf2d5f98546b901bd4315John McCall} 22070c24c808e4dce43e88abf2d5f98546b901bd4315John McCall 22082979ec73b4f974d85f2ce84167712177a44c6f09Ted KremenekCGObjCRuntime::~CGObjCRuntime() {} 2209