CGObjC.cpp File Reference

#include "CGDebugInfo.h"
#include "CGObjCRuntime.h"
#include "CodeGenFunction.h"
#include "CodeGenModule.h"
#include "ConstantEmitter.h"
#include "TargetInfo.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/Attr.h"
#include "clang/AST/DeclObjC.h"
#include "clang/AST/StmtObjC.h"
#include "clang/Basic/Diagnostic.h"
#include "clang/CodeGen/CGFunctionInfo.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/Analysis/ObjCARCUtil.h"
#include "llvm/BinaryFormat/MachO.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/InlineAsm.h"

Include dependency graph for CGObjC.cpp:

Go to the source code of this file.

Typedefs
typedef llvm::PointerIntPair< llvm::Value *, 1, bool >	TryEmitResult
typedef llvm::function_ref< llvm::Value *(CodeGenFunction &CGF, llvm::Value *value)>	ValueTransform

Functions
static TryEmitResult	tryEmitARCRetainScalarExpr (CodeGenFunction &CGF, const Expr *e)
static RValue	AdjustObjCObjectType (CodeGenFunction &CGF, QualType ExpT, RValue Result)
	Adjust the type of an Objective-C object that doesn't match up due to type erasure at various points, e.g., related result types or the use of parameterized classes. More...
static llvm::Constant *	getNullForVariable (Address addr)
	Given the address of a variable of pointer type, find the correct null to store into it. More...
static bool	shouldExtendReceiverForInnerPointerMessage (const ObjCMessageExpr *message)
	Decide whether to extend the lifetime of the receiver of a returns-inner-pointer message. More...
static const Expr *	findWeakLValue (const Expr *E)
	Given an expression of ObjC pointer type, check whether it was immediately loaded from an ARC __weak l-value. More...
static Optional< llvm::Value * >	tryGenerateSpecializedMessageSend (CodeGenFunction &CGF, QualType ResultType, llvm::Value *Receiver, const CallArgList &Args, Selector Sel, const ObjCMethodDecl *method, bool isClassMessage)
	The ObjC runtime may provide entrypoints that are likely to be faster than an ordinary message send of the appropriate selector. More...
static void	AppendFirstImpliedRuntimeProtocols (const ObjCProtocolDecl *PD, llvm::UniqueVector< const ObjCProtocolDecl * > &PDs)
static Optional< llvm::Value * >	tryEmitSpecializedAllocInit (CodeGenFunction &CGF, const ObjCMessageExpr *OME)
	Instead of '[[MyClass alloc] init]', try to generate 'objc_alloc_init(MyClass)'. More...
static llvm::Value *	emitARCRetainLoadOfScalar (CodeGenFunction &CGF, LValue lvalue, QualType type)
static void	emitStructGetterCall (CodeGenFunction &CGF, ObjCIvarDecl *ivar, bool isAtomic, bool hasStrong)
	emitStructGetterCall - Call the runtime function to load a property into the return value slot. More...
static bool	hasUnalignedAtomics (llvm::Triple::ArchType arch)
	Determine whether the given architecture supports unaligned atomic accesses. More...
static CharUnits	getMaxAtomicAccessSize (CodeGenModule &CGM, llvm::Triple::ArchType arch)
	Return the maximum size that permits atomic accesses for the given architecture. More...
static bool	hasTrivialGetExpr (const ObjCPropertyImplDecl *propImpl)
static void	emitCPPObjectAtomicGetterCall (CodeGenFunction &CGF, llvm::Value *returnAddr, ObjCIvarDecl *ivar, llvm::Constant *AtomicHelperFn)
	emitCPPObjectAtomicGetterCall - Call the runtime function to copy the ivar into the resturn slot. More...
static void	emitStructSetterCall (CodeGenFunction &CGF, ObjCMethodDecl *OMD, ObjCIvarDecl *ivar)
	emitStructSetterCall - Call the runtime function to store the value from the first formal parameter into the given ivar. More...
static void	emitCPPObjectAtomicSetterCall (CodeGenFunction &CGF, ObjCMethodDecl *OMD, ObjCIvarDecl *ivar, llvm::Constant *AtomicHelperFn)
	emitCPPObjectAtomicSetterCall - Call the runtime function to store the value from the first formal parameter into the given ivar, using the Cpp API for atomic Cpp objects with non-trivial copy assignment. More...
static bool	hasTrivialSetExpr (const ObjCPropertyImplDecl *PID)
static bool	UseOptimizedSetter (CodeGenModule &CGM)
static void	destroyARCStrongWithStore (CodeGenFunction &CGF, Address addr, QualType type)
	Like CodeGenFunction::destroyARCStrong, but do it with a call. More...
static void	emitCXXDestructMethod (CodeGenFunction &CGF, ObjCImplementationDecl *impl)
static void	setARCRuntimeFunctionLinkage (CodeGenModule &CGM, llvm::Value *RTF)
static void	setARCRuntimeFunctionLinkage (CodeGenModule &CGM, llvm::FunctionCallee RTF)
static llvm::Function *	getARCIntrinsic (llvm::Intrinsic::ID IntID, CodeGenModule &CGM)
static llvm::Value *	emitARCValueOperation (CodeGenFunction &CGF, llvm::Value *value, llvm::Type *returnType, llvm::Function *&fn, llvm::Intrinsic::ID IntID, llvm::CallInst::TailCallKind tailKind=llvm::CallInst::TCK_None)
	Perform an operation having the signature i8* (i8*) where a null input causes a no-op and returns null. More...
static llvm::Value *	emitARCLoadOperation (CodeGenFunction &CGF, Address addr, llvm::Function *&fn, llvm::Intrinsic::ID IntID)
	Perform an operation having the following signature: i8* (i8**) More...
static llvm::Value *	emitARCStoreOperation (CodeGenFunction &CGF, Address addr, llvm::Value *value, llvm::Function *&fn, llvm::Intrinsic::ID IntID, bool ignored)
	Perform an operation having the following signature: i8* (i8**, i8*) More...
static void	emitARCCopyOperation (CodeGenFunction &CGF, Address dst, Address src, llvm::Function *&fn, llvm::Intrinsic::ID IntID)
	Perform an operation having the following signature: void (i8**, i8**) More...
static llvm::Value *	emitObjCValueOperation (CodeGenFunction &CGF, llvm::Value *value, llvm::Type *returnType, llvm::FunctionCallee &fn, StringRef fnName)
	Perform an operation having the signature i8* (i8*) where a null input causes a no-op and returns null. More...
static void	emitAutoreleasedReturnValueMarker (CodeGenFunction &CGF)
static llvm::Value *	emitOptimizedARCReturnCall (llvm::Value *value, bool IsRetainRV, CodeGenFunction &CGF)
static bool	shouldRetainObjCLifetime (Qualifiers::ObjCLifetime lifetime)
static TryEmitResult	tryEmitARCRetainLoadOfScalar (CodeGenFunction &CGF, LValue lvalue, QualType type)
static TryEmitResult	tryEmitARCRetainLoadOfScalar (CodeGenFunction &CGF, const Expr *e)
static llvm::Value *	emitARCOperationAfterCall (CodeGenFunction &CGF, llvm::Value *value, ValueTransform doAfterCall, ValueTransform doFallback)
	Insert code immediately after a call. More...
static llvm::Value *	emitARCRetainCallResult (CodeGenFunction &CGF, const Expr *e)
	Given that the given expression is some sort of call (which does not return retained), emit a retain following it. More...
static llvm::Value *	emitARCUnsafeClaimCallResult (CodeGenFunction &CGF, const Expr *e)
	Given that the given expression is some sort of call (which does not return retained), perform an unsafeClaim following it. More...
static bool	shouldEmitSeparateBlockRetain (const Expr *e)
	Determine whether it might be important to emit a separate objc_retain_block on the result of the given expression, or whether it's okay to just emit it in a +1 context. More...
static llvm::Value *	emitARCUnsafeUnretainedScalarExpr (CodeGenFunction &CGF, const Expr *e)
static unsigned	getBaseMachOPlatformID (const llvm::Triple &TT)
static llvm::Value *	emitIsPlatformVersionAtLeast (CodeGenFunction &CGF, const VersionTuple &Version)
static bool	isFoundationNeededForDarwinAvailabilityCheck (const llvm::Triple &TT, const VersionTuple &TargetVersion)

Typedef Documentation

TryEmitResult

typedef llvm::PointerIntPair<llvm::Value*,1,bool> TryEmitResult

Definition at line 33 of file CGObjC.cpp.

ValueTransform

typedef llvm::function_ref<llvm::Value *(CodeGenFunction &CGF, llvm::Value *value)> ValueTransform

Definition at line 2927 of file CGObjC.cpp.

Function Documentation

AdjustObjCObjectType()

static RValue AdjustObjCObjectType ( CodeGenFunction &  CGF, QualType  ET, RValue  Result  )

static

Adjust the type of an Objective-C object that doesn't match up due to type erasure at various points, e.g., related result types or the use of parameterized classes.

Definition at line 269 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::ConvertType(), clang::CodeGen::CGBuilderTy::CreateBitCast(), clang::CodeGen::RValue::get(), and clang::Type::isObjCRetainableType().

Referenced by clang::CodeGen::CodeGenFunction::EmitObjCMessageExpr().

AppendFirstImpliedRuntimeProtocols()

static void AppendFirstImpliedRuntimeProtocols ( const ObjCProtocolDecl *  PD, llvm::UniqueVector< const ObjCProtocolDecl * > &  PDs  )

static

Definition at line 450 of file CGObjC.cpp.

References clang::ObjCProtocolDecl::getCanonicalDecl(), clang::ObjCProtocolDecl::isNonRuntimeProtocol(), and clang::ObjCProtocolDecl::protocols().

Referenced by clang::CodeGen::CGObjCRuntime::GetRuntimeProtocolList().

destroyARCStrongWithStore()

static void destroyARCStrongWithStore ( CodeGenFunction &  CGF, Address  addr, QualType  type  )

static

Like CodeGenFunction::destroyARCStrong, but do it with a call.

Definition at line 1619 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::EmitARCStoreStrongCall(), and getNullForVariable().

Referenced by emitCXXDestructMethod().

emitARCCopyOperation()

static void emitARCCopyOperation ( CodeGenFunction &  CGF, Address  dst, Address  src, llvm::Function *&  fn, llvm::Intrinsic::ID  IntID  )

static

Perform an operation having the following signature: void (i8**, i8**)

Definition at line 2198 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CGBuilderTy::CreateBitCast(), clang::CodeGen::CodeGenFunction::EmitNounwindRuntimeCall(), getARCIntrinsic(), clang::CodeGen::Address::getPointer(), clang::CodeGen::Address::getType(), and clang::CodeGen::CodeGenTypeCache::Int8PtrPtrTy.

Referenced by clang::CodeGen::CodeGenFunction::EmitARCCopyWeak(), and clang::CodeGen::CodeGenFunction::EmitARCMoveWeak().

emitARCLoadOperation()

static llvm::Value* emitARCLoadOperation ( CodeGenFunction &  CGF, Address  addr, llvm::Function *&  fn, llvm::Intrinsic::ID  IntID  )

static

Perform an operation having the following signature: i8* (i8**)

Definition at line 2151 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CGBuilderTy::CreateBitCast(), clang::CodeGen::CodeGenFunction::EmitNounwindRuntimeCall(), getARCIntrinsic(), clang::CodeGen::Address::getElementType(), clang::CodeGen::Address::getPointer(), clang::CodeGen::CodeGenTypeCache::Int8PtrPtrTy, and clang::CodeGen::CodeGenTypeCache::Int8PtrTy.

Referenced by clang::CodeGen::CodeGenFunction::EmitARCLoadWeak(), and clang::CodeGen::CodeGenFunction::EmitARCLoadWeakRetained().

emitARCOperationAfterCall()

static llvm::Value* emitARCOperationAfterCall ( CodeGenFunction &  CGF, llvm::Value *  value, ValueTransform  doAfterCall, ValueTransform  doFallback  )

static

Insert code immediately after a call.

Definition at line 2933 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::Builder.

Referenced by emitARCRetainCallResult(), and emitARCUnsafeClaimCallResult().

emitARCRetainCallResult()

static llvm::Value* emitARCRetainCallResult ( CodeGenFunction &  CGF, const Expr *  e  )

static

Given that the given expression is some sort of call (which does not return retained), emit a retain following it.

Definition at line 2989 of file CGObjC.cpp.

References emitARCOperationAfterCall(), clang::CodeGen::CodeGenFunction::EmitARCRetainAutoreleasedReturnValue(), clang::CodeGen::CodeGenFunction::EmitARCRetainNonBlock(), and clang::CodeGen::CodeGenFunction::EmitScalarExpr().

Referenced by clang::CodeGen::CodeGenFunction::EmitARCReclaimReturnedObject().

emitARCRetainLoadOfScalar()

static llvm::Value * emitARCRetainLoadOfScalar ( CodeGenFunction &  CGF, LValue  lvalue, QualType  type  )

static

Definition at line 3405 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::EmitARCRetain(), and tryEmitARCRetainLoadOfScalar().

Referenced by clang::CodeGen::CodeGenFunction::generateObjCGetterBody().

emitARCStoreOperation()

static llvm::Value* emitARCStoreOperation ( CodeGenFunction &  CGF, Address  addr, llvm::Value *  value, llvm::Function *&  fn, llvm::Intrinsic::ID  IntID, bool  ignored  )

static

Perform an operation having the following signature: i8* (i8**, i8*)

Definition at line 2173 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CGBuilderTy::CreateBitCast(), clang::CodeGen::CodeGenFunction::EmitNounwindRuntimeCall(), getARCIntrinsic(), clang::CodeGen::Address::getElementType(), clang::CodeGen::Address::getPointer(), clang::CodeGen::CodeGenTypeCache::Int8PtrPtrTy, and clang::CodeGen::CodeGenTypeCache::Int8PtrTy.

Referenced by clang::CodeGen::CodeGenFunction::EmitARCInitWeak(), and clang::CodeGen::CodeGenFunction::EmitARCStoreWeak().

emitARCUnsafeClaimCallResult()

static llvm::Value* emitARCUnsafeClaimCallResult ( CodeGenFunction &  CGF, const Expr *  e  )

static

Given that the given expression is some sort of call (which does not return retained), perform an unsafeClaim following it.

Definition at line 3003 of file CGObjC.cpp.

References emitARCOperationAfterCall(), clang::CodeGen::CodeGenFunction::EmitARCUnsafeClaimAutoreleasedReturnValue(), and clang::CodeGen::CodeGenFunction::EmitScalarExpr().

Referenced by clang::CodeGen::CodeGenFunction::EmitARCReclaimReturnedObject().

emitARCUnsafeUnretainedScalarExpr()

static llvm::Value* emitARCUnsafeUnretainedScalarExpr ( CodeGenFunction &  CGF, const Expr *  e  )

static

Definition at line 3535 of file CGObjC.cpp.

Referenced by clang::CodeGen::CodeGenFunction::EmitARCUnsafeUnretainedScalarExpr().

emitARCValueOperation()

static llvm::Value* emitARCValueOperation ( CodeGenFunction &  CGF, llvm::Value *  value, llvm::Type *  returnType, llvm::Function *&  fn, llvm::Intrinsic::ID  IntID, llvm::CallInst::TailCallKind  tailKind = llvm::CallInst::TCK_None  )

static

Perform an operation having the signature i8* (i8*) where a null input causes a no-op and returns null.

Definition at line 2127 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CGBuilderTy::CreateBitCast(), clang::CodeGen::CodeGenFunction::EmitNounwindRuntimeCall(), getARCIntrinsic(), and clang::CodeGen::CodeGenTypeCache::Int8PtrTy.

Referenced by clang::CodeGen::CodeGenFunction::EmitARCAutorelease(), clang::CodeGen::CodeGenFunction::EmitARCAutoreleaseReturnValue(), clang::CodeGen::CodeGenFunction::EmitARCRetainAutoreleaseNonBlock(), clang::CodeGen::CodeGenFunction::EmitARCRetainAutoreleaseReturnValue(), clang::CodeGen::CodeGenFunction::EmitARCRetainBlock(), clang::CodeGen::CodeGenFunction::EmitARCRetainNonBlock(), and emitOptimizedARCReturnCall().

emitAutoreleasedReturnValueMarker()

static void emitAutoreleasedReturnValueMarker ( CodeGenFunction &  CGF )

static

Definition at line 2300 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::TargetCodeGenInfo::getARCRetainAutoreleasedReturnValueMarker(), clang::CodeGen::CodeGenFunction::getBundlesForFunclet(), clang::CodeGen::CodeGenModule::getCodeGenOpts(), clang::CodeGen::CodeGenFunction::getLLVMContext(), clang::CodeGen::CodeGenModule::getModule(), clang::CodeGen::CodeGenModule::getObjCEntrypoints(), clang::CodeGen::CodeGenModule::getTargetCodeGenInfo(), clang::CodeGen::ObjCEntrypoints::retainAutoreleasedReturnValueMarker, and clang::CodeGen::CodeGenTypeCache::VoidTy.

Referenced by emitOptimizedARCReturnCall().

emitCPPObjectAtomicGetterCall()

static void emitCPPObjectAtomicGetterCall ( CodeGenFunction &  CGF, llvm::Value *  returnAddr, ObjCIvarDecl *  ivar, llvm::Constant *  AtomicHelperFn  )

static

emitCPPObjectAtomicGetterCall - Call the runtime function to copy the ivar into the resturn slot.

Definition at line 1082 of file CGObjC.cpp.

References clang::CodeGen::CallArgList::add(), clang::CodeGen::CodeGenTypes::arrangeBuiltinFunctionCall(), clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CGBuilderTy::CreateBitCast(), clang::CodeGen::CodeGenFunction::EmitCall(), clang::CodeGen::CodeGenFunction::EmitLValueForIvar(), clang::CodeGen::CGCallee::forDirect(), clang::CodeGen::RValue::get(), clang::CodeGen::CodeGenFunction::getContext(), clang::CodeGen::CGObjCRuntime::GetCppAtomicObjectGetFunction(), clang::CodeGen::CodeGenModule::getObjCRuntime(), clang::CodeGen::LValue::getPointer(), clang::CodeGen::CodeGenFunction::getTypes(), clang::CodeGen::CodeGenTypeCache::Int8PtrTy, clang::CodeGen::CodeGenFunction::LoadObjCSelf(), clang::CodeGen::CodeGenFunction::TypeOfSelfObject(), clang::ASTContext::VoidPtrTy, and clang::ASTContext::VoidTy.

Referenced by clang::CodeGen::CodeGenFunction::generateObjCGetterBody().

emitCPPObjectAtomicSetterCall()

static void emitCPPObjectAtomicSetterCall ( CodeGenFunction &  CGF, ObjCMethodDecl *  OMD, ObjCIvarDecl *  ivar, llvm::Constant *  AtomicHelperFn  )

static

emitCPPObjectAtomicSetterCall - Call the runtime function to store the value from the first formal parameter into the given ivar, using the Cpp API for atomic Cpp objects with non-trivial copy assignment.

Definition at line 1334 of file CGObjC.cpp.

References clang::CodeGen::CallArgList::add(), clang::CodeGen::CodeGenTypes::arrangeBuiltinFunctionCall(), clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CGBuilderTy::CreateBitCast(), clang::CodeGen::CodeGenFunction::EmitCall(), clang::CodeGen::CodeGenFunction::EmitLValue(), clang::CodeGen::CodeGenFunction::EmitLValueForIvar(), clang::CodeGen::CGCallee::forDirect(), clang::CodeGen::RValue::get(), clang::CodeGen::CodeGenFunction::getContext(), clang::CodeGen::CGObjCRuntime::GetCppAtomicObjectSetFunction(), clang::QualType::getNonReferenceType(), clang::CodeGen::CodeGenModule::getObjCRuntime(), clang::CodeGen::LValue::getPointer(), clang::ValueDecl::getType(), clang::CodeGen::CodeGenFunction::getTypes(), clang::CodeGen::CodeGenTypeCache::Int8PtrTy, clang::CodeGen::CodeGenFunction::LoadObjCSelf(), clang::ObjCMethodDecl::param_begin(), clang::CodeGen::CodeGenFunction::TypeOfSelfObject(), clang::VK_LValue, clang::ASTContext::VoidPtrTy, and clang::ASTContext::VoidTy.

Referenced by clang::CodeGen::CodeGenFunction::generateObjCSetterBody().

emitCXXDestructMethod()

static void emitCXXDestructMethod ( CodeGenFunction &  CGF, ObjCImplementationDecl *  impl  )

static

Definition at line 1626 of file CGObjC.cpp.

References clang::ObjCInterfaceDecl::all_declared_ivar_begin(), destroyARCStrongWithStore(), clang::QualType::DK_objc_strong_lifetime, clang::CodeGen::EHCleanup, clang::CodeGen::CodeGenFunction::EHStack, clang::ObjCImplDecl::getClassInterface(), clang::CodeGen::CodeGenFunction::getCleanupKind(), clang::CodeGen::CodeGenFunction::getDestroyer(), clang::ObjCIvarDecl::getNextIvar(), clang::ValueDecl::getType(), clang::CodeGen::CodeGenFunction::LoadObjCSelf(), and clang::CodeGen::CodeGenFunction::RunCleanupsScope::requiresCleanups().

emitIsPlatformVersionAtLeast()

static llvm::Value* emitIsPlatformVersionAtLeast ( CodeGenFunction &  CGF, const VersionTuple &  Version  )

static

Definition at line 3902 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenModule::CreateRuntimeFunction(), clang::CodeGen::CodeGenFunction::EmitNounwindRuntimeCall(), getBaseMachOPlatformID(), clang::CodeGen::CodeGenModule::getTarget(), clang::TargetInfo::getTriple(), clang::CodeGen::CodeGenTypeCache::Int32Ty, and clang::CodeGen::CodeGenModule::IsPlatformVersionAtLeastFn.

Referenced by clang::CodeGen::CodeGenFunction::EmitBuiltinAvailable().

emitObjCValueOperation()

static llvm::Value* emitObjCValueOperation ( CodeGenFunction &  CGF, llvm::Value *  value, llvm::Type *  returnType, llvm::FunctionCallee &  fn, StringRef  fnName  )

static

Perform an operation having the signature i8* (i8*) where a null input causes a no-op and returns null.

Definition at line 2216 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CGBuilderTy::CreateBitCast(), clang::CodeGen::CodeGenModule::CreateRuntimeFunction(), clang::CodeGen::CodeGenFunction::EmitCallOrInvoke(), and clang::CodeGen::CodeGenTypeCache::Int8PtrTy.

Referenced by clang::CodeGen::CodeGenFunction::EmitObjCAlloc(), clang::CodeGen::CodeGenFunction::EmitObjCAllocInit(), clang::CodeGen::CodeGenFunction::EmitObjCAllocWithZone(), clang::CodeGen::CodeGenFunction::EmitObjCAutorelease(), and clang::CodeGen::CodeGenFunction::EmitObjCRetainNonBlock().

emitOptimizedARCReturnCall()

static llvm::Value* emitOptimizedARCReturnCall ( llvm::Value *  value, bool  IsRetainRV, CodeGenFunction &  CGF  )

static

Definition at line 2339 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::EmitARCNoopIntrinsicUse(), emitARCValueOperation(), emitAutoreleasedReturnValueMarker(), getARCIntrinsic(), clang::CodeGen::CodeGenModule::getCodeGenOpts(), clang::CodeGen::CodeGenModule::getObjCEntrypoints(), clang::CodeGen::CodeGenModule::getTarget(), clang::CodeGen::CodeGenModule::getTargetCodeGenInfo(), clang::TargetInfo::getTriple(), clang::CodeGen::TargetCodeGenInfo::markARCOptimizedReturnCallsAsNoTail(), clang::CodeGen::ObjCEntrypoints::objc_retainAutoreleasedReturnValue, and clang::CodeGen::ObjCEntrypoints::objc_unsafeClaimAutoreleasedReturnValue.

Referenced by clang::CodeGen::CodeGenFunction::EmitARCRetainAutoreleasedReturnValue(), and clang::CodeGen::CodeGenFunction::EmitARCUnsafeClaimAutoreleasedReturnValue().

emitStructGetterCall()

static void emitStructGetterCall ( CodeGenFunction &  CGF, ObjCIvarDecl *  ivar, bool  isAtomic, bool  hasStrong  )

static

emitStructGetterCall - Call the runtime function to load a property into the return value slot.

Definition at line 815 of file CGObjC.cpp.

References clang::CodeGen::CallArgList::add(), clang::CodeGen::CodeGenTypes::arrangeBuiltinFunctionCall(), clang::ASTContext::BoolTy, clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CGBuilderTy::CreateBitCast(), clang::CodeGen::CodeGenFunction::EmitCall(), clang::CodeGen::CodeGenFunction::EmitLValueForIvar(), clang::CodeGen::CGCallee::forDirect(), clang::CodeGen::RValue::get(), clang::CodeGen::LValue::getAddress(), clang::CodeGen::CodeGenFunction::getContext(), clang::CodeGen::CGObjCRuntime::GetGetStructFunction(), clang::CodeGen::CodeGenModule::getObjCRuntime(), clang::CodeGen::Address::getPointer(), clang::CodeGen::CodeGenModule::getSize(), clang::ASTContext::getSizeType(), clang::ValueDecl::getType(), clang::CodeGen::CodeGenFunction::getTypes(), clang::ASTContext::getTypeSizeInChars(), clang::CodeGen::CodeGenFunction::LoadObjCSelf(), clang::CodeGen::CodeGenFunction::ReturnValue, clang::CodeGen::CodeGenFunction::TypeOfSelfObject(), clang::CodeGen::CodeGenTypeCache::VoidPtrTy, clang::ASTContext::VoidPtrTy, and clang::ASTContext::VoidTy.

Referenced by clang::CodeGen::CodeGenFunction::generateObjCGetterBody().

emitStructSetterCall()

static void emitStructSetterCall ( CodeGenFunction &  CGF, ObjCMethodDecl *  OMD, ObjCIvarDecl *  ivar  )

static

emitStructSetterCall - Call the runtime function to store the value from the first formal parameter into the given ivar.

Definition at line 1290 of file CGObjC.cpp.

References clang::CodeGen::CallArgList::add(), clang::CodeGen::CodeGenTypes::arrangeBuiltinFunctionCall(), clang::ASTContext::BoolTy, clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CGBuilderTy::CreateBitCast(), clang::CodeGen::CodeGenFunction::EmitCall(), clang::CodeGen::CodeGenFunction::EmitLValue(), clang::CodeGen::CodeGenFunction::EmitLValueForIvar(), clang::CodeGen::CGCallee::forDirect(), clang::CodeGen::RValue::get(), clang::CodeGen::CodeGenFunction::getContext(), clang::QualType::getNonReferenceType(), clang::CodeGen::CodeGenModule::getObjCRuntime(), clang::CodeGen::LValue::getPointer(), clang::CodeGen::CGObjCRuntime::GetSetStructFunction(), clang::CodeGen::CodeGenModule::getSize(), clang::ASTContext::getSizeType(), clang::ValueDecl::getType(), clang::CodeGen::CodeGenFunction::getTypes(), clang::ASTContext::getTypeSizeInChars(), clang::CodeGen::CodeGenTypeCache::Int8PtrTy, clang::CodeGen::CodeGenFunction::LoadObjCSelf(), clang::ObjCMethodDecl::param_begin(), clang::CodeGen::CodeGenFunction::TypeOfSelfObject(), clang::VK_LValue, clang::ASTContext::VoidPtrTy, and clang::ASTContext::VoidTy.

Referenced by clang::CodeGen::CodeGenFunction::generateObjCSetterBody().

findWeakLValue()

static const Expr* findWeakLValue ( const Expr *  E )

static

Given an expression of ObjC pointer type, check whether it was immediately loaded from an ARC __weak l-value.

Definition at line 346 of file CGObjC.cpp.

References clang::Expr::getType(), clang::Expr::IgnoreParens(), clang::Type::isObjCRetainableType(), and clang::Qualifiers::OCL_Weak.

Referenced by clang::CodeGen::CodeGenFunction::EmitObjCMessageExpr().

getARCIntrinsic()

static llvm::Function* getARCIntrinsic ( llvm::Intrinsic::ID  IntID, CodeGenModule &  CGM  )

static

Definition at line 2117 of file CGObjC.cpp.

References clang::CodeGen::CodeGenModule::getIntrinsic(), and setARCRuntimeFunctionLinkage().

Referenced by emitARCCopyOperation(), clang::CodeGen::CodeGenFunction::EmitARCDestroyWeak(), emitARCLoadOperation(), clang::CodeGen::CodeGenFunction::EmitARCRelease(), emitARCStoreOperation(), clang::CodeGen::CodeGenFunction::EmitARCStoreStrongCall(), emitARCValueOperation(), clang::CodeGen::CodeGenFunction::EmitObjCAutoreleasePoolPop(), clang::CodeGen::CodeGenFunction::EmitObjCAutoreleasePoolPush(), and emitOptimizedARCReturnCall().

getBaseMachOPlatformID()

static unsigned getBaseMachOPlatformID ( const llvm::Triple &  TT )

static

Definition at line 3886 of file CGObjC.cpp.

Referenced by emitIsPlatformVersionAtLeast().

getMaxAtomicAccessSize()

static CharUnits getMaxAtomicAccessSize ( CodeGenModule &  CGM, llvm::Triple::ArchType  arch  )

static

Return the maximum size that permits atomic accesses for the given architecture.

Definition at line 855 of file CGObjC.cpp.

References clang::CharUnits::fromQuantity(), and clang::CodeGen::CodeGenTypeCache::PointerSizeInBytes.

getNullForVariable()

static llvm::Constant* getNullForVariable ( Address  addr )

static

Given the address of a variable of pointer type, find the correct null to store into it.

Definition at line 42 of file CGObjC.cpp.

References clang::CodeGen::Address::getElementType().

Referenced by destroyARCStrongWithStore(), clang::CodeGen::CodeGenFunction::EmitARCDestroyStrong(), clang::CodeGen::CodeGenFunction::EmitObjCMessageExpr(), and tryEmitARCRetainLoadOfScalar().

hasTrivialGetExpr()

static bool hasTrivialGetExpr ( const ObjCPropertyImplDecl *  propImpl )

static

Definition at line 1057 of file CGObjC.cpp.

References clang::ObjCPropertyImplDecl::getGetterCXXConstructor(), and clang::Expr::isGLValue().

Referenced by clang::CodeGen::CodeGenFunction::GenerateObjCAtomicGetterCopyHelperFunction(), and clang::CodeGen::CodeGenFunction::generateObjCGetterBody().

hasTrivialSetExpr()

static bool hasTrivialSetExpr ( const ObjCPropertyImplDecl *  PID )

static

Definition at line 1370 of file CGObjC.cpp.

References clang::ObjCPropertyImplDecl::getSetterCXXAssignment().

Referenced by clang::CodeGen::CodeGenFunction::GenerateObjCAtomicSetterCopyHelperFunction(), and clang::CodeGen::CodeGenFunction::generateObjCSetterBody().

hasUnalignedAtomics()

static bool hasUnalignedAtomics ( llvm::Triple::ArchType  arch )

static

Determine whether the given architecture supports unaligned atomic accesses.

They don't have to be fast, just faster than a function call and a mutex.

Definition at line 847 of file CGObjC.cpp.

isFoundationNeededForDarwinAvailabilityCheck()

static bool isFoundationNeededForDarwinAvailabilityCheck ( const llvm::Triple &  TT, const VersionTuple &  TargetVersion  )

static

Definition at line 3962 of file CGObjC.cpp.

setARCRuntimeFunctionLinkage() [1/2]

static void setARCRuntimeFunctionLinkage ( CodeGenModule &  CGM, llvm::FunctionCallee  RTF  )

static

Definition at line 2112 of file CGObjC.cpp.

References setARCRuntimeFunctionLinkage().

setARCRuntimeFunctionLinkage() [2/2]

static void setARCRuntimeFunctionLinkage ( CodeGenModule &  CGM, llvm::Value *  RTF  )

static

Definition at line 2100 of file CGObjC.cpp.

References clang::CodeGen::CodeGenModule::getLangOpts(), clang::CodeGen::CodeGenModule::getTriple(), clang::ObjCRuntime::hasNativeARC(), and clang::LangOptions::ObjCRuntime.

Referenced by clang::CodeGen::CodeGenFunction::EmitObjCAutoreleasePoolPop(), clang::CodeGen::CodeGenFunction::EmitObjCRelease(), getARCIntrinsic(), and setARCRuntimeFunctionLinkage().

shouldEmitSeparateBlockRetain()

static bool shouldEmitSeparateBlockRetain ( const Expr *  e )

static

Determine whether it might be important to emit a separate objc_retain_block on the result of the given expression, or whether it's okay to just emit it in a +1 context.

Definition at line 3029 of file CGObjC.cpp.

References clang::cast(), clang::Expr::getType(), clang::Expr::IgnoreParens(), and clang::Type::isBlockPointerType().

Referenced by clang::CodeGen::CodeGenFunction::EmitARCExtendBlockObject().

shouldExtendReceiverForInnerPointerMessage()

static bool shouldExtendReceiverForInnerPointerMessage ( const ObjCMessageExpr *  message )

static

Decide whether to extend the lifetime of the receiver of a returns-inner-pointer message.

Definition at line 287 of file CGObjC.cpp.

References clang::ObjCMessageExpr::Class, clang::CastExpr::getCastKind(), clang::DeclRefExpr::getDecl(), clang::ObjCMessageExpr::getInstanceReceiver(), clang::QualType::getObjCLifetime(), clang::ObjCMessageExpr::getReceiverKind(), clang::CastExpr::getSubExpr(), clang::Expr::getType(), clang::Decl::hasAttr(), clang::VarDecl::hasLocalStorage(), clang::Expr::IgnoreParens(), clang::ObjCMessageExpr::Instance, clang::Qualifiers::OCL_Strong, clang::ObjCMessageExpr::SuperClass, and clang::ObjCMessageExpr::SuperInstance.

Referenced by clang::CodeGen::CodeGenFunction::EmitObjCMessageExpr().

shouldRetainObjCLifetime()

static bool shouldRetainObjCLifetime ( Qualifiers::ObjCLifetime  lifetime )

static

Definition at line 2849 of file CGObjC.cpp.

References clang::Qualifiers::OCL_Autoreleasing, clang::Qualifiers::OCL_ExplicitNone, clang::Qualifiers::OCL_None, clang::Qualifiers::OCL_Strong, and clang::Qualifiers::OCL_Weak.

Referenced by tryEmitARCRetainLoadOfScalar().

tryEmitARCRetainLoadOfScalar() [1/2]

static TryEmitResult tryEmitARCRetainLoadOfScalar ( CodeGenFunction &  CGF, const Expr *  e  )

static

Definition at line 2878 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::EmitLoadOfLValue(), clang::CodeGen::CodeGenFunction::EmitLValue(), clang::CodeGen::CodeGenFunction::emitScalarConstant(), clang::CodeGen::CodeGenFunction::EmitScalarExpr(), clang::CodeGen::CodeGenFunction::EmitStoreOfScalar(), clang::CodeGen::LValue::getAddress(), clang::CodeGen::CodeGenFunction::getLangOpts(), getNullForVariable(), clang::CodeGen::RValue::getScalarVal(), clang::Expr::getType(), clang::Expr::IgnoreParens(), clang::Expr::isXValue(), clang::Qualifiers::OCL_Strong, clang::Qualifiers::OCL_Weak, shouldRetainObjCLifetime(), tryEmitARCRetainLoadOfScalar(), and clang::CodeGen::CodeGenFunction::tryEmitAsConstant().

tryEmitARCRetainLoadOfScalar() [2/2]

static TryEmitResult tryEmitARCRetainLoadOfScalar ( CodeGenFunction &  CGF, LValue  lvalue, QualType  type  )

static

Definition at line 2864 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::EmitARCLoadWeakRetained(), clang::CodeGen::CodeGenFunction::EmitLoadOfLValue(), clang::CodeGen::LValue::getAddress(), clang::CodeGen::RValue::getScalarVal(), clang::Qualifiers::OCL_Weak, and shouldRetainObjCLifetime().

Referenced by emitARCRetainLoadOfScalar(), and tryEmitARCRetainLoadOfScalar().

tryEmitARCRetainScalarExpr()

static TryEmitResult tryEmitARCRetainScalarExpr ( CodeGenFunction &  CGF, const Expr *  e  )

static

Definition at line 3401 of file CGObjC.cpp.

Referenced by clang::CodeGen::CodeGenFunction::EmitARCExtendBlockObject(), clang::CodeGen::CodeGenFunction::EmitARCRetainAutoreleaseScalarExpr(), clang::CodeGen::CodeGenFunction::EmitARCRetainScalarExpr(), clang::CodeGen::CodeGenFunction::EmitARCStoreStrong(), and clang::CodeGen::CodeGenFunction::EmitObjCMessageExpr().

tryEmitSpecializedAllocInit()

static Optional<llvm::Value *> tryEmitSpecializedAllocInit ( CodeGenFunction &  CGF, const ObjCMessageExpr *  OME  )

static

Instead of '[[MyClass alloc] init]', try to generate 'objc_alloc_init(MyClass)'.

This provides a code size improvement on the caller side, as well as the optimized objc_alloc.

Definition at line 523 of file CGObjC.cpp.

References clang::Type::castAs(), clang::CodeGen::CodeGenFunction::CGM, clang::ObjCMessageExpr::Class, clang::CodeGen::CodeGenFunction::ConvertType(), clang::CodeGen::CodeGenFunction::EmitObjCAllocInit(), clang::CodeGen::CodeGenFunction::EmitScalarExpr(), clang::CodeGen::CGObjCRuntime::GetClass(), clang::ObjCMessageExpr::getInstanceReceiver(), clang::ObjCObjectType::getInterface(), clang::CodeGen::CodeGenFunction::getLangOpts(), clang::Selector::getNameForSlot(), clang::CodeGen::CodeGenModule::getObjCRuntime(), clang::ObjCMessageExpr::getReceiverKind(), clang::ObjCMessageExpr::getSelector(), clang::Expr::getType(), clang::Expr::IgnoreParenCasts(), clang::ObjCMessageExpr::Instance, clang::Type::isObjCObjectPointerType(), clang::Selector::isUnarySelector(), clang::LangOptions::ObjCRuntime, clang::ObjCMessageExpr::SuperClass, and clang::ObjCMessageExpr::SuperInstance.

Referenced by clang::CodeGen::CodeGenFunction::EmitObjCMessageExpr().

tryGenerateSpecializedMessageSend()

static Optional<llvm::Value *> tryGenerateSpecializedMessageSend ( CodeGenFunction &  CGF, QualType  ResultType, llvm::Value *  Receiver, const CallArgList &  Args, Selector  Sel, const ObjCMethodDecl *  method, bool  isClassMessage  )

static

The ObjC runtime may provide entrypoints that are likely to be faster than an ordinary message send of the appropriate selector.

The entrypoints are guaranteed to be equivalent to just sending the corresponding message. If the entrypoint is implemented naively as just a message send, using it is a trade-off: it sacrifices a few cycles of overhead to save a small amount of code. However, it's possible for runtimes to detect and special-case classes that use "standard" behavior; if that's dynamically a large proportion of all objects, using the entrypoint will also be faster than using a message send.

If the runtime does support a required entrypoint, then this method will generate a call and return the resulting value. Otherwise it will return None and the caller can generate a msgSend instead.

Definition at line 374 of file CGObjC.cpp.

References clang::CodeGen::ARCPreciseLifetime, std::arg(), clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::ConvertType(), clang::CodeGen::CodeGenFunction::EmitObjCAlloc(), clang::CodeGen::CodeGenFunction::EmitObjCAllocWithZone(), clang::CodeGen::CodeGenFunction::EmitObjCAutorelease(), clang::CodeGen::CodeGenFunction::EmitObjCRelease(), clang::CodeGen::CodeGenFunction::EmitObjCRetainNonBlock(), clang::Selector::getMethodFamily(), clang::Selector::getNameForSlot(), clang::Selector::getNumArgs(), clang::Selector::isKeywordSelector(), clang::Type::isObjCObjectPointerType(), clang::Selector::isUnarySelector(), clang::Type::isVoidType(), clang::LangOptions::NonGC, clang::OMF_alloc, clang::OMF_autorelease, clang::OMF_release, and clang::OMF_retain.

Referenced by clang::CodeGen::CGObjCRuntime::GeneratePossiblySpecializedMessageSend().

UseOptimizedSetter()

static bool UseOptimizedSetter ( CodeGenModule &  CGM )

static

Definition at line 1394 of file CGObjC.cpp.

References clang::CodeGen::CodeGenModule::getLangOpts(), clang::ObjCRuntime::hasOptimizedSetter(), clang::LangOptions::NonGC, and clang::LangOptions::ObjCRuntime.

Referenced by clang::CodeGen::CodeGenFunction::generateObjCSetterBody().