State for an integer range. More...

#include "llvm/Transforms/IPO/Attributor.h"

Inheritance diagram for llvm::IntegerRangeState:

[legend]

Public Member Functions
	IntegerRangeState (uint32_t BitWidth)

	IntegerRangeState (const ConstantRange &CR)

uint32_t	getBitWidth () const
	Return associated values' bit width.

bool	isValidState () const override
	See AbstractState::isValidState()

bool	isAtFixpoint () const override
	See AbstractState::isAtFixpoint()

ChangeStatus	indicateOptimisticFixpoint () override
	See AbstractState::indicateOptimisticFixpoint(...)

ChangeStatus	indicatePessimisticFixpoint () override
	See AbstractState::indicatePessimisticFixpoint(...)

ConstantRange	getKnown () const
	Return the known state encoding.

ConstantRange	getAssumed () const
	Return the assumed state encoding.

void	unionAssumed (const ConstantRange &R)
	Unite assumed range with the passed state.

void	unionAssumed (const IntegerRangeState &R)
	See IntegerRangeState::unionAssumed(..).

void	intersectKnown (const ConstantRange &R)
	Intersect known range with the passed state.

void	intersectKnown (const IntegerRangeState &R)
	See IntegerRangeState::intersectKnown(..).

bool	operator== (const IntegerRangeState &R) const
	Equality for IntegerRangeState.

IntegerRangeState	operator^= (const IntegerRangeState &R)
	"Clamp" this state with `R`.

IntegerRangeState	operator&= (const IntegerRangeState &R)

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

virtual bool	isValidState () const =0
	Return if this abstract state is in a valid state.

virtual bool	isAtFixpoint () const =0
	Return if this abstract state is fixed, thus does not need to be updated if information changes as it cannot change itself.

virtual ChangeStatus	indicateOptimisticFixpoint ()=0
	Indicate that the abstract state should converge to the optimistic state.

virtual ChangeStatus	indicatePessimisticFixpoint ()=0
	Indicate that the abstract state should converge to the pessimistic state.

Static Public Member Functions
static ConstantRange	getWorstState (uint32_t BitWidth)
	Return the worst possible representable state.

static ConstantRange	getBestState (uint32_t BitWidth)
	Return the best possible representable state.

static ConstantRange	getBestState (const IntegerRangeState &IRS)

Public Attributes
uint32_t	BitWidth
	Bitwidth of the associated value.

ConstantRange	Assumed
	State representing assumed range, initially set to empty.

ConstantRange	Known
	State representing known range, initially set to [-inf, inf].

Detailed Description

State for an integer range.

Definition at line 2943 of file Attributor.h.

Constructor & Destructor Documentation

◆ IntegerRangeState() [1/2]

llvm::IntegerRangeState::IntegerRangeState ( uint32_t BitWidth )

inline

Definition at line 2954 of file Attributor.h.

◆ IntegerRangeState() [2/2]

llvm::IntegerRangeState::IntegerRangeState ( const ConstantRange & CR )

inline

Definition at line 2958 of file Attributor.h.

Member Function Documentation

◆ getAssumed()

ConstantRange llvm::IntegerRangeState::getAssumed ( ) const

inline

Return the assumed state encoding.

Definition at line 3002 of file Attributor.h.

References Assumed.

Referenced by llvm::operator<<(), operator==(), and stripAndAccumulateOffsets().

◆ getBestState() [1/2]

static ConstantRange llvm::IntegerRangeState::getBestState ( const IntegerRangeState & IRS )

inlinestatic

Definition at line 2971 of file Attributor.h.

References getBestState(), and getBitWidth().

◆ getBestState() [2/2]

static ConstantRange llvm::IntegerRangeState::getBestState ( uint32_t BitWidth )

inlinestatic

Return the best possible representable state.

Definition at line 2968 of file Attributor.h.

References BitWidth.

Referenced by getBestState().

◆ getBitWidth()

uint32_t llvm::IntegerRangeState::getBitWidth ( ) const

inline

Return associated values' bit width.

Definition at line 2976 of file Attributor.h.

References BitWidth.

Referenced by getBestState(), and llvm::operator<<().

◆ getKnown()

ConstantRange llvm::IntegerRangeState::getKnown ( ) const

inline

Return the known state encoding.

Definition at line 2999 of file Attributor.h.

References Known.

Referenced by llvm::operator<<(), operator==(), and stripAndAccumulateOffsets().

◆ getWorstState()

static ConstantRange llvm::IntegerRangeState::getWorstState ( uint32_t BitWidth )

inlinestatic

Return the worst possible representable state.

Definition at line 2963 of file Attributor.h.

References BitWidth.

◆ indicateOptimisticFixpoint()

ChangeStatus llvm::IntegerRangeState::indicateOptimisticFixpoint ( )

inlineoverridevirtual

See AbstractState::indicateOptimisticFixpoint(...)

Implements llvm::AbstractState.

Definition at line 2987 of file Attributor.h.

References Assumed, llvm::CHANGED, and Known.

◆ indicatePessimisticFixpoint()

ChangeStatus llvm::IntegerRangeState::indicatePessimisticFixpoint ( )

inlineoverridevirtual

See AbstractState::indicatePessimisticFixpoint(...)

Implements llvm::AbstractState.

Definition at line 2993 of file Attributor.h.

References Assumed, llvm::CHANGED, and Known.

◆ intersectKnown() [1/2]

void llvm::IntegerRangeState::intersectKnown ( const ConstantRange & R )

inline

Intersect known range with the passed state.

Definition at line 3016 of file Attributor.h.

References Assumed, llvm::ConstantRange::intersectWith(), and Known.

Referenced by intersectKnown().

◆ intersectKnown() [2/2]

void llvm::IntegerRangeState::intersectKnown ( const IntegerRangeState & R )

inline

See IntegerRangeState::intersectKnown(..).

Definition at line 3022 of file Attributor.h.

References intersectKnown().

◆ isAtFixpoint()

bool llvm::IntegerRangeState::isAtFixpoint ( ) const

inlineoverridevirtual

See AbstractState::isAtFixpoint()

Implements llvm::AbstractState.

Definition at line 2984 of file Attributor.h.

References Assumed, and Known.

◆ isValidState()

bool llvm::IntegerRangeState::isValidState ( ) const

inlineoverridevirtual

See AbstractState::isValidState()

Implements llvm::AbstractState.

Definition at line 2979 of file Attributor.h.

References Assumed, BitWidth, and llvm::ConstantRange::isFullSet().

◆ operator&=()

IntegerRangeState llvm::IntegerRangeState::operator&= ( const IntegerRangeState & R )

inline

Definition at line 3041 of file Attributor.h.

References Assumed, Known, and llvm::ConstantRange::unionWith().

◆ operator==()

bool llvm::IntegerRangeState::operator== ( const IntegerRangeState & R ) const

inline

Equality for IntegerRangeState.

Definition at line 3027 of file Attributor.h.

References getAssumed(), and getKnown().

◆ operator^=()

IntegerRangeState llvm::IntegerRangeState::operator^= ( const IntegerRangeState & R )

inline

"Clamp" this state with R.

The result is subtype dependent but it is intended that only information assumed in both states will be assumed in this one afterwards.

Definition at line 3034 of file Attributor.h.

References unionAssumed().

◆ unionAssumed() [1/2]

void llvm::IntegerRangeState::unionAssumed ( const ConstantRange & R )

inline

Unite assumed range with the passed state.

Definition at line 3005 of file Attributor.h.

References Assumed, llvm::ConstantRange::intersectWith(), Known, and llvm::ConstantRange::unionWith().

Referenced by operator^=(), and unionAssumed().

◆ unionAssumed() [2/2]

void llvm::IntegerRangeState::unionAssumed ( const IntegerRangeState & R )

inline

See IntegerRangeState::unionAssumed(..).

Definition at line 3011 of file Attributor.h.

References unionAssumed().

Member Data Documentation

◆ Assumed

ConstantRange llvm::IntegerRangeState::Assumed

State representing assumed range, initially set to empty.

Definition at line 2949 of file Attributor.h.

Referenced by getAssumed(), indicateOptimisticFixpoint(), indicatePessimisticFixpoint(), intersectKnown(), isAtFixpoint(), isValidState(), operator&=(), and unionAssumed().

◆ BitWidth

uint32_t llvm::IntegerRangeState::BitWidth

Bitwidth of the associated value.

Definition at line 2946 of file Attributor.h.

Referenced by getBestState(), getBitWidth(), getWorstState(), and isValidState().

◆ Known

ConstantRange llvm::IntegerRangeState::Known

State representing known range, initially set to [-inf, inf].

Definition at line 2952 of file Attributor.h.

Referenced by getKnown(), indicateOptimisticFixpoint(), indicatePessimisticFixpoint(), intersectKnown(), isAtFixpoint(), operator&=(), and unionAssumed().

The documentation for this struct was generated from the following file:

include/llvm/Transforms/IPO/Attributor.h

Public Member Functions

Static Public Member Functions

Public Attributes

Detailed Description

Constructor & Destructor Documentation

◆ IntegerRangeState() [1/2]

◆ IntegerRangeState() [2/2]

Member Function Documentation

◆ getAssumed()

◆ getBestState() [1/2]

◆ getBestState() [2/2]

◆ getBitWidth()

◆ getKnown()

◆ getWorstState()

◆ indicateOptimisticFixpoint()

◆ indicatePessimisticFixpoint()

◆ intersectKnown() [1/2]

◆ intersectKnown() [2/2]

◆ isAtFixpoint()

◆ isValidState()

◆ operator&=()

◆ operator==()

◆ operator^=()

◆ unionAssumed() [1/2]

◆ unionAssumed() [2/2]

Member Data Documentation

◆ Assumed

◆ BitWidth

◆ Known