This class summarizes several per-pointer runtime properties which are propagated through the flow graph. More...

#include "Transforms/ObjCARC/PtrState.h"

Inheritance diagram for llvm::objcarc::PtrState:

Public Member Functions
bool	IsKnownSafe () const
void	SetKnownSafe (const bool NewValue)
bool	IsTailCallRelease () const
void	SetTailCallRelease (const bool NewValue)
bool	IsTrackingImpreciseReleases () const
const MDNode *	GetReleaseMetadata () const
void	SetReleaseMetadata (MDNode *NewValue)
bool	IsCFGHazardAfflicted () const
void	SetCFGHazardAfflicted (const bool NewValue)
void	SetKnownPositiveRefCount ()
void	ClearKnownPositiveRefCount ()
bool	HasKnownPositiveRefCount () const
void	SetSeq (Sequence NewSeq)
Sequence	GetSeq () const
void	ClearSequenceProgress ()
void	ResetSequenceProgress (Sequence NewSeq)
void	Merge (const PtrState &Other, bool TopDown)
void	InsertCall (Instruction *I)
void	InsertReverseInsertPt (Instruction *I)
void	ClearReverseInsertPts ()
bool	HasReverseInsertPts () const
const RRInfo &	GetRRInfo () const

Protected Member Functions
	PtrState ()

Protected Attributes
bool	KnownPositiveRefCount = false
	True if the reference count is known to be incremented.
bool	Partial = false
	True if we've seen an opportunity for partial RR elimination, such as pushing calls into a CFG triangle or into one side of a CFG diamond.
unsigned char	Seq: 8
	The current position in the sequence.
RRInfo	RRI
	Unidirectional information about the current sequence.

Detailed Description

This class summarizes several per-pointer runtime properties which are propagated through the flow graph.

Definition at line 101 of file PtrState.h.

Constructor & Destructor Documentation

◆ PtrState()

llvm::objcarc::PtrState::PtrState ( )

inlineprotected

Definition at line 116 of file PtrState.h.

References llvm::objcarc::S_None, and Seq.

Referenced by Merge().

Member Function Documentation

◆ ClearKnownPositiveRefCount()

void PtrState::ClearKnownPositiveRefCount ( )

Definition at line 129 of file PtrState.cpp.

References llvm::dbgs(), KnownPositiveRefCount, and LLVM_DEBUG.

Referenced by llvm::objcarc::TopDownPtrState::HandlePotentialAlterRefCount(), and llvm::objcarc::TopDownPtrState::MatchWithRelease().

◆ ClearReverseInsertPts()

void llvm::objcarc::PtrState::ClearReverseInsertPts ( )

inline

Definition at line 161 of file PtrState.h.

References RRI.

Referenced by llvm::objcarc::TopDownPtrState::MatchWithRelease(), and llvm::objcarc::BottomUpPtrState::MatchWithRetain().

◆ ClearSequenceProgress()

void llvm::objcarc::PtrState::ClearSequenceProgress ( )

inline

Definition at line 152 of file PtrState.h.

References ResetSequenceProgress(), and llvm::objcarc::S_None.

Referenced by CheckForUseCFGHazard(), and Merge().

◆ GetReleaseMetadata()

const MDNode * llvm::objcarc::PtrState::GetReleaseMetadata ( ) const

inline

Definition at line 133 of file PtrState.h.

References RRI.

◆ GetRRInfo()

const RRInfo & llvm::objcarc::PtrState::GetRRInfo ( ) const

inline

Definition at line 165 of file PtrState.h.

References RRI.

◆ GetSeq()

Sequence llvm::objcarc::PtrState::GetSeq ( ) const

inline

Definition at line 150 of file PtrState.h.

References Seq.

Referenced by llvm::objcarc::BottomUpPtrState::HandlePotentialAlterRefCount(), llvm::objcarc::TopDownPtrState::HandlePotentialAlterRefCount(), llvm::objcarc::BottomUpPtrState::HandlePotentialUse(), llvm::objcarc::TopDownPtrState::HandlePotentialUse(), llvm::objcarc::BottomUpPtrState::InitBottomUp(), llvm::objcarc::TopDownPtrState::InitTopDown(), llvm::objcarc::TopDownPtrState::MatchWithRelease(), llvm::objcarc::BottomUpPtrState::MatchWithRetain(), Merge(), and SetSeq().

◆ HasKnownPositiveRefCount()

bool llvm::objcarc::PtrState::HasKnownPositiveRefCount ( ) const

inline

Definition at line 146 of file PtrState.h.

References KnownPositiveRefCount.

Referenced by llvm::objcarc::BottomUpPtrState::InitBottomUp(), and llvm::objcarc::TopDownPtrState::InitTopDown().

◆ HasReverseInsertPts()

bool llvm::objcarc::PtrState::HasReverseInsertPts ( ) const

inline

Definition at line 163 of file PtrState.h.

References RRI.

Referenced by llvm::objcarc::TopDownPtrState::HandlePotentialAlterRefCount(), and llvm::objcarc::BottomUpPtrState::HandlePotentialUse().

◆ InsertCall()

void llvm::objcarc::PtrState::InsertCall ( Instruction * I )

inline

Definition at line 157 of file PtrState.h.

References I, and RRI.

Referenced by llvm::objcarc::BottomUpPtrState::InitBottomUp(), and llvm::objcarc::TopDownPtrState::InitTopDown().

◆ InsertReverseInsertPt()

void llvm::objcarc::PtrState::InsertReverseInsertPt ( Instruction * I )

inline

Definition at line 159 of file PtrState.h.

References I, and RRI.

Referenced by llvm::objcarc::TopDownPtrState::HandlePotentialAlterRefCount(), llvm::objcarc::BottomUpPtrState::HandlePotentialUse(), and llvm::objcarc::BottomUpPtrState::InitBottomUp().

◆ IsCFGHazardAfflicted()

bool llvm::objcarc::PtrState::IsCFGHazardAfflicted ( ) const

inline

Definition at line 137 of file PtrState.h.

References RRI.

◆ IsKnownSafe()

bool llvm::objcarc::PtrState::IsKnownSafe ( ) const

inline

Definition at line 119 of file PtrState.h.

References RRI.

Referenced by CheckForCanReleaseCFGHazard(), and CheckForUseCFGHazard().

◆ IsTailCallRelease()

bool llvm::objcarc::PtrState::IsTailCallRelease ( ) const

inline

Definition at line 123 of file PtrState.h.

References RRI.

◆ IsTrackingImpreciseReleases()

bool llvm::objcarc::PtrState::IsTrackingImpreciseReleases ( ) const

inline

Definition at line 129 of file PtrState.h.

References RRI.

Referenced by llvm::objcarc::BottomUpPtrState::MatchWithRetain().

◆ Merge()

void PtrState::Merge	(	const PtrState &	Other,
		bool	TopDown )

Definition at line 147 of file PtrState.cpp.

References ClearSequenceProgress(), GetSeq(), KnownPositiveRefCount, MergeSeqs(), llvm::Other, Partial, PtrState(), RRI, llvm::objcarc::S_None, and Seq.

◆ ResetSequenceProgress()

void PtrState::ResetSequenceProgress ( Sequence NewSeq )

Definition at line 140 of file PtrState.cpp.

References llvm::dbgs(), LLVM_DEBUG, Partial, RRI, and SetSeq().

Referenced by ClearSequenceProgress(), llvm::objcarc::BottomUpPtrState::InitBottomUp(), and llvm::objcarc::TopDownPtrState::InitTopDown().

◆ SetCFGHazardAfflicted()

void llvm::objcarc::PtrState::SetCFGHazardAfflicted ( const bool NewValue )

inline

Definition at line 139 of file PtrState.h.

References RRI.

Referenced by CheckForUseCFGHazard(), llvm::objcarc::TopDownPtrState::HandlePotentialAlterRefCount(), and llvm::objcarc::BottomUpPtrState::HandlePotentialUse().

◆ SetKnownPositiveRefCount()

void PtrState::SetKnownPositiveRefCount ( )

Definition at line 124 of file PtrState.cpp.

References llvm::dbgs(), KnownPositiveRefCount, and LLVM_DEBUG.

Referenced by llvm::objcarc::BottomUpPtrState::InitBottomUp(), llvm::objcarc::TopDownPtrState::InitTopDown(), and llvm::objcarc::BottomUpPtrState::MatchWithRetain().

◆ SetKnownSafe()

void llvm::objcarc::PtrState::SetKnownSafe ( const bool NewValue )

inline

Definition at line 121 of file PtrState.h.

References RRI.

Referenced by llvm::objcarc::BottomUpPtrState::InitBottomUp(), and llvm::objcarc::TopDownPtrState::InitTopDown().

◆ SetReleaseMetadata()

void llvm::objcarc::PtrState::SetReleaseMetadata ( MDNode * NewValue )

inline

Definition at line 135 of file PtrState.h.

References RRI.

Referenced by llvm::objcarc::BottomUpPtrState::InitBottomUp(), and llvm::objcarc::TopDownPtrState::MatchWithRelease().

◆ SetSeq()

void PtrState::SetSeq ( Sequence NewSeq )

Definition at line 134 of file PtrState.cpp.

References llvm::dbgs(), GetSeq(), LLVM_DEBUG, and Seq.

Referenced by llvm::objcarc::BottomUpPtrState::HandlePotentialAlterRefCount(), llvm::objcarc::TopDownPtrState::HandlePotentialAlterRefCount(), llvm::objcarc::BottomUpPtrState::HandlePotentialUse(), llvm::objcarc::TopDownPtrState::HandlePotentialUse(), and ResetSequenceProgress().

◆ SetTailCallRelease()

void llvm::objcarc::PtrState::SetTailCallRelease ( const bool NewValue )

inline

Definition at line 125 of file PtrState.h.

References RRI.

Referenced by llvm::objcarc::BottomUpPtrState::InitBottomUp(), and llvm::objcarc::TopDownPtrState::MatchWithRelease().

Member Data Documentation

◆ KnownPositiveRefCount

bool llvm::objcarc::PtrState::KnownPositiveRefCount = false

protected

True if the reference count is known to be incremented.

Definition at line 104 of file PtrState.h.

Referenced by ClearKnownPositiveRefCount(), HasKnownPositiveRefCount(), Merge(), and SetKnownPositiveRefCount().

◆ Partial

bool llvm::objcarc::PtrState::Partial = false

protected

True if we've seen an opportunity for partial RR elimination, such as pushing calls into a CFG triangle or into one side of a CFG diamond.

Definition at line 108 of file PtrState.h.

Referenced by Merge(), and ResetSequenceProgress().

◆ RRI

RRInfo llvm::objcarc::PtrState::RRI

protected

Unidirectional information about the current sequence.

Definition at line 114 of file PtrState.h.

Referenced by ClearReverseInsertPts(), GetReleaseMetadata(), GetRRInfo(), HasReverseInsertPts(), InsertCall(), InsertReverseInsertPt(), IsCFGHazardAfflicted(), IsKnownSafe(), IsTailCallRelease(), IsTrackingImpreciseReleases(), Merge(), ResetSequenceProgress(), SetCFGHazardAfflicted(), SetKnownSafe(), SetReleaseMetadata(), and SetTailCallRelease().

◆ Seq

unsigned char llvm::objcarc::PtrState::Seq

protected

The current position in the sequence.

Definition at line 111 of file PtrState.h.

Referenced by GetSeq(), Merge(), PtrState(), and SetSeq().

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

lib/Transforms/ObjCARC/PtrState.h
lib/Transforms/ObjCARC/PtrState.cpp

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ PtrState()

Member Function Documentation

◆ ClearKnownPositiveRefCount()

◆ ClearReverseInsertPts()

◆ ClearSequenceProgress()

◆ GetReleaseMetadata()

◆ GetRRInfo()

◆ GetSeq()

◆ HasKnownPositiveRefCount()

◆ HasReverseInsertPts()

◆ InsertCall()

◆ InsertReverseInsertPt()

◆ IsCFGHazardAfflicted()

◆ IsKnownSafe()

◆ IsTailCallRelease()

◆ IsTrackingImpreciseReleases()

◆ Merge()

◆ ResetSequenceProgress()

◆ SetCFGHazardAfflicted()

◆ SetKnownPositiveRefCount()

◆ SetKnownSafe()

◆ SetReleaseMetadata()

◆ SetSeq()

◆ SetTailCallRelease()

Member Data Documentation

◆ KnownPositiveRefCount

◆ Partial

◆ RRI

◆ Seq