Utility declarations/definitions specific to ARC.

Functions
static const Value *	FindSingleUseIdentifiedObject (const Value *Arg)
	This is similar to StripPointerCastsAndObjCCalls but it stops as soon as it finds a value with multiple uses.
static bool	DoesRetainableObjPtrEscape (const User *Ptr)
	Test whether the given retainable object pointer escapes.
static bool	AreAnyUnderlyingObjectsAnAlloca (const Value *V)

---

Function Documentation

static bool AreAnyUnderlyingObjectsAnAlloca

(

const Value *

V

)

[inline, static]

This is a wrapper around getUnderlyingObjCPtr along the lines of GetUnderlyingObjects except that it returns early when it sees the first alloca.

Definition at line 265 of file ObjCARCOpts.cpp.

References llvm::SmallVectorBase::empty(), llvm::objcarc::GetUnderlyingObjCPtr(), llvm::SmallPtrSet< PtrType, SmallSize >::insert(), P, llvm::SmallVectorImpl< T >::pop_back_val(), and llvm::SmallVectorTemplateBase< T, isPodLike< T >::value >::push_back().

static bool DoesRetainableObjPtrEscape

(

const User *

Ptr

)

[static]

Test whether the given retainable object pointer escapes.

This differs from regular escape analysis in that a use as an argument to a call is not considered an escape.

Definition at line 182 of file ObjCARCOpts.cpp.

References llvm::dbgs(), DEBUG, llvm::SmallVectorBase::empty(), llvm::objcarc::GetBasicInstructionClass(), llvm::ARM_PROC::I, llvm::objcarc::IC_Autorelease, llvm::objcarc::IC_AutoreleaseRV, llvm::objcarc::IC_InitWeak, llvm::objcarc::IC_IntrinsicUser, llvm::objcarc::IC_None, llvm::objcarc::IC_StoreStrong, llvm::objcarc::IC_StoreWeak, llvm::objcarc::IC_User, llvm::SmallPtrSet< PtrType, SmallSize >::insert(), llvm::User::op_begin(), llvm::User::op_end(), llvm::SmallVectorImpl< T >::pop_back_val(), llvm::SmallVectorTemplateBase< T, isPodLike< T >::value >::push_back(), llvm::Value::use_begin(), and llvm::Value::use_end().

static const Value* FindSingleUseIdentifiedObject

(

const Value *

Arg

)

[static]

This is similar to StripPointerCastsAndObjCCalls but it stops as soon as it finds a value with multiple uses.

Definition at line 146 of file ObjCARCOpts.cpp.

References llvm::objcarc::GetBasicInstructionClass(), llvm::Value::hasOneUse(), llvm::objcarc::IsForwarding(), llvm::objcarc::IsObjCIdentifiedObject(), llvm::objcarc::StripPointerCastsAndObjCCalls(), llvm::Value::use_begin(), llvm::Value::use_empty(), and llvm::Value::use_end().