mlir::AliasResult Class Reference

The possible results of an alias query. More...

#include "mlir/Analysis/AliasAnalysis.h"

Public Types
enum	Kind { NoAlias = 0 , MayAlias , PartialAlias , MustAlias }

Public Member Functions
	AliasResult (Kind kind)
bool	operator== (const AliasResult &other) const
bool	operator!= (const AliasResult &other) const
	operator bool () const
	Allow conversion to bool to signal if there is an aliasing or not. More...
AliasResult	merge (AliasResult other) const
	Merge this alias result with other and return a new result that represents the conservative merge of both results. More...
bool	isNo () const
	Returns if this result indicates no possibility of aliasing. More...
bool	isMay () const
	Returns if this result is a may alias. More...
bool	isMust () const
	Returns if this result is a must alias. More...
bool	isPartial () const
	Returns if this result is a partial alias. More...
void	print (raw_ostream &os) const
	Print this alias result to the provided output stream. More...

Detailed Description

The possible results of an alias query.

Definition at line 26 of file AliasAnalysis.h.

Member Enumeration Documentation

Kind

enum mlir::AliasResult::Kind

Enumerator
NoAlias	The two locations do not alias at all. This value is arranged to convert to false, while all other values convert to true. This allows a boolean context to convert the result to a binary flag indicating whether there is the possibility of aliasing.
MayAlias	The two locations may or may not alias. This is the least precise result.
PartialAlias	The two locations alias, but only due to a partial overlap.
MustAlias	The two locations precisely alias each other.

Definition at line 28 of file AliasAnalysis.h.

Constructor & Destructor Documentation

AliasResult()

mlir::AliasResult::AliasResult ( Kind  kind )

inline

Definition at line 44 of file AliasAnalysis.h.

Member Function Documentation

isMay()

bool mlir::AliasResult::isMay ( ) const

inline

Returns if this result is a may alias.

Definition at line 62 of file AliasAnalysis.h.

References MayAlias.

Referenced by mlir::AliasAnalysis::alias().

isMust()

bool mlir::AliasResult::isMust ( ) const

inline

Returns if this result is a must alias.

Definition at line 65 of file AliasAnalysis.h.

References MustAlias.

Referenced by merge().

isNo()

bool mlir::AliasResult::isNo ( ) const

inline

Returns if this result indicates no possibility of aliasing.

Definition at line 59 of file AliasAnalysis.h.

References NoAlias.

Referenced by mlir::affine::affineScalarReplace(), and mlir::LocalAliasAnalysis::getModRef().

isPartial()

bool mlir::AliasResult::isPartial ( ) const

inline

Returns if this result is a partial alias.

Definition at line 68 of file AliasAnalysis.h.

References PartialAlias.

Referenced by merge().

merge()

AliasResult AliasResult::merge

(

AliasResult

other

)

const

Merge this alias result with other and return a new result that represents the conservative merge of both results.

If the results represent a known alias, the stronger alias is chosen (i.e. Partial+Must=Must). If the two results are conflicting, MayAlias is returned.

Definition at line 24 of file AliasAnalysis.cpp.

References isMust(), isPartial(), MayAlias, and PartialAlias.

operator bool()

mlir::AliasResult::operator bool ( ) const

inlineexplicit

Allow conversion to bool to signal if there is an aliasing or not.

Definition at line 49 of file AliasAnalysis.h.

References NoAlias.

operator!=()

bool mlir::AliasResult::operator!= ( const AliasResult &  other ) const

inline

Definition at line 46 of file AliasAnalysis.h.

operator==()

bool mlir::AliasResult::operator== ( const AliasResult &  other ) const

inline

Definition at line 45 of file AliasAnalysis.h.

print()

void AliasResult::print

(

raw_ostream &

os

)

const

Print this alias result to the provided output stream.

Definition at line 34 of file AliasAnalysis.cpp.

Referenced by mlir::operator<<().

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

• include/mlir/Analysis/AliasAnalysis.h
• lib/Analysis/AliasAnalysis.cpp