Global variable summary information to aid decisions and implementation of importing. More...

#include "llvm/IR/ModuleSummaryIndex.h"

Inheritance diagram for llvm::GlobalVarSummary:

Collaboration diagram for llvm::GlobalVarSummary:

[legend]

Classes
struct	GVarFlags

Public Member Functions
	GlobalVarSummary (GVFlags Flags, GVarFlags VarFlags, std::vector< ValueInfo > Refs)

GVarFlags	varflags () const

void	setReadOnly (bool RO)

void	setWriteOnly (bool WO)

bool	maybeReadOnly () const

bool	maybeWriteOnly () const

bool	isConstant () const

void	setVCallVisibility (GlobalObject::VCallVisibility Vis)

GlobalObject::VCallVisibility	getVCallVisibility () const

void	setVTableFuncs (VTableFuncList Funcs)

ArrayRef< VirtFuncOffset >	vTableFuncs () const

Public Member Functions inherited from llvm::GlobalValueSummary
virtual	~GlobalValueSummary ()=default

GlobalValue::GUID	getOriginalName () const
	Returns the hash of the original name, it is identical to the GUID for externally visible symbols, but not for local ones. More...

void	setOriginalName (GlobalValue::GUID Name)
	Initialize the original name hash in this summary. More...

SummaryKind	getSummaryKind () const
	Which kind of summary subclass this is. More...

void	setModulePath (StringRef ModPath)
	Set the path to the module containing this function, for use in the combined index. More...

StringRef	modulePath () const
	Get the path to the module containing this function. More...

GVFlags	flags () const
	Get the flags for this GlobalValue (see `struct` GVFlags). More...

GlobalValue::LinkageTypes	linkage () const
	Return linkage type recorded for this global value. More...

void	setLinkage (GlobalValue::LinkageTypes Linkage)
	Sets the linkage to the value determined by global summary-based optimization. More...

bool	notEligibleToImport () const
	Return true if this global value can't be imported. More...

bool	isLive () const

void	setLive (bool Live)

void	setDSOLocal (bool Local)

bool	isDSOLocal () const

void	setCanAutoHide (bool CanAutoHide)

bool	canAutoHide () const

void	setNotEligibleToImport ()
	Flag that this global value cannot be imported. More...

ArrayRef< ValueInfo >	refs () const
	Return the list of values referenced by this global value definition. More...

GlobalValueSummary *	getBaseObject ()
	If this is an alias summary, returns the summary of the aliased object (a global variable or function), otherwise returns itself. More...

const GlobalValueSummary *	getBaseObject () const

Static Public Member Functions
static bool	classof (const GlobalValueSummary *GVS)
	Check if this is a global variable summary. More...

Public Attributes
struct llvm::GlobalVarSummary::GVarFlags	VarFlags

Additional Inherited Members
Public Types inherited from llvm::GlobalValueSummary
enum	SummaryKind : unsigned { AliasKind, FunctionKind, GlobalVarKind }
	Sububclass discriminator (for dyn_cast<> et al.) More...

Protected Member Functions inherited from llvm::GlobalValueSummary
	GlobalValueSummary (SummaryKind K, GVFlags Flags, std::vector< ValueInfo > Refs)

Detailed Description

Global variable summary information to aid decisions and implementation of importing.

Global variable summary has two extra flag, telling if it is readonly or writeonly. Both readonly and writeonly variables can be optimized in the backed: readonly variables can be const-folded, while writeonly vars can be completely eliminated together with corresponding stores. We let both things happen by means of internalizing such variables after ThinLTO import.

Definition at line 812 of file ModuleSummaryIndex.h.