llvm::objcarc::ObjCARCAAResult Class Reference

This is a simple alias analysis implementation that uses knowledge of ARC constructs to answer queries. More...

#include "llvm/Analysis/ObjCARCAliasAnalysis.h"

Inheritance diagram for llvm::objcarc::ObjCARCAAResult:

Collaboration diagram for llvm::objcarc::ObjCARCAAResult:

Public Member Functions
	ObjCARCAAResult (const DataLayout &DL)
	ObjCARCAAResult (ObjCARCAAResult &&Arg)
bool	invalidate (Function &, const PreservedAnalyses &, FunctionAnalysisManager::Invalidator &)
	Handle invalidation events from the new pass manager. More...
AliasResult	alias (const MemoryLocation &LocA, const MemoryLocation &LocB)
bool	pointsToConstantMemory (const MemoryLocation &Loc, bool OrLocal)
FunctionModRefBehavior	getModRefBehavior (const Function *F)
ModRefInfo	getModRefInfo (const CallBase *Call, const MemoryLocation &Loc)
Public Member Functions inherited from llvm::AAResultBase< ObjCARCAAResult >
AliasResult	alias (const MemoryLocation &LocA, const MemoryLocation &LocB)
bool	pointsToConstantMemory (const MemoryLocation &Loc, bool OrLocal)
ModRefInfo	getArgModRefInfo (const CallBase *Call, unsigned ArgIdx)
FunctionModRefBehavior	getModRefBehavior (const CallBase *Call)
FunctionModRefBehavior	getModRefBehavior (const Function *F)
ModRefInfo	getModRefInfo (const CallBase *Call, const MemoryLocation &Loc)
ModRefInfo	getModRefInfo (const CallBase *Call1, const CallBase *Call2)

Additional Inherited Members
Protected Member Functions inherited from llvm::AAResultBase< ObjCARCAAResult >
	AAResultBase ()=default
	AAResultBase (const AAResultBase &Arg)
	AAResultBase (AAResultBase &&Arg)
AAResultsProxy	getBestAAResults ()
	Get a proxy for the best AA result set to query at this time. More...

Detailed Description

This is a simple alias analysis implementation that uses knowledge of ARC constructs to answer queries.

TODO: This class could be generalized to know about other ObjC-specific tricks. Such as knowing that ivars in the non-fragile ABI are non-aliasing even though their offsets are dynamic.

Definition at line 38 of file ObjCARCAliasAnalysis.h.

Constructor & Destructor Documentation

ObjCARCAAResult() [1/2]

llvm::objcarc::ObjCARCAAResult::ObjCARCAAResult ( const DataLayout &  DL )

inlineexplicit

Definition at line 44 of file ObjCARCAliasAnalysis.h.

Referenced by llvm::objcarc::ObjCARCAA::run().

ObjCARCAAResult() [2/2]

llvm::objcarc::ObjCARCAAResult::ObjCARCAAResult ( ObjCARCAAResult &&  Arg )

inline

Definition at line 45 of file ObjCARCAliasAnalysis.h.

Member Function Documentation

alias()

AliasResult ObjCARCAAResult::alias	(	const MemoryLocation &	LocA,
		const MemoryLocation &	LocB
	)

Definition at line 40 of file ObjCARCAliasAnalysis.cpp.

References llvm::MemoryLocation::AATags, llvm::AAResultBase< DerivedT >::alias(), llvm::objcarc::EnableARCOpts, llvm::objcarc::GetRCIdentityRoot(), llvm::objcarc::GetUnderlyingObjCPtr(), llvm::MayAlias, llvm::NoAlias, llvm::MemoryLocation::Ptr, and llvm::MemoryLocation::Size.

Referenced by invalidate().

getModRefBehavior()

FunctionModRefBehavior ObjCARCAAResult::getModRefBehavior

(

const Function *

F

)

Definition at line 95 of file ObjCARCAliasAnalysis.cpp.

References llvm::objcarc::EnableARCOpts, llvm::FMRB_DoesNotAccessMemory, llvm::objcarc::GetFunctionClass(), llvm::AAResultBase< DerivedT >::getModRefBehavior(), and llvm::objcarc::NoopCast.

Referenced by invalidate().

getModRefInfo()

ModRefInfo ObjCARCAAResult::getModRefInfo	(	const CallBase *	Call,
		const MemoryLocation &	Loc
	)

Definition at line 109 of file ObjCARCAliasAnalysis.cpp.

References llvm::objcarc::Autorelease, llvm::objcarc::AutoreleasepoolPush, llvm::objcarc::AutoreleaseRV, llvm::objcarc::EnableARCOpts, llvm::objcarc::FusedRetainAutorelease, llvm::objcarc::FusedRetainAutoreleaseRV, llvm::objcarc::GetBasicARCInstKind(), llvm::AAResultBase< DerivedT >::getModRefInfo(), llvm::NoModRef, llvm::objcarc::NoopCast, llvm::objcarc::Retain, and llvm::objcarc::RetainRV.

Referenced by invalidate().

invalidate()

bool llvm::objcarc::ObjCARCAAResult::invalidate ( Function &  , const PreservedAnalyses &  , FunctionAnalysisManager::Invalidator &    )

inline

Handle invalidation events from the new pass manager.

By definition, this result is stateless and so remains valid.

Definition at line 51 of file ObjCARCAliasAnalysis.h.

References alias(), llvm::objcarc::Call, F(), getModRefBehavior(), llvm::AAResultBase< DerivedT >::getModRefBehavior(), getModRefInfo(), llvm::AAResultBase< DerivedT >::getModRefInfo(), and pointsToConstantMemory().

pointsToConstantMemory()

bool ObjCARCAAResult::pointsToConstantMemory	(	const MemoryLocation &	Loc,
		bool	OrLocal
	)

Definition at line 72 of file ObjCARCAliasAnalysis.cpp.

References llvm::MemoryLocation::AATags, llvm::objcarc::EnableARCOpts, llvm::objcarc::GetRCIdentityRoot(), llvm::objcarc::GetUnderlyingObjCPtr(), llvm::AAResultBase< DerivedT >::pointsToConstantMemory(), llvm::MemoryLocation::Ptr, and llvm::MemoryLocation::Size.

Referenced by invalidate().

---

The documentation for this class was generated from the following files:

• include/llvm/Analysis/ObjCARCAliasAnalysis.h
• lib/Analysis/ObjCARCAliasAnalysis.cpp