Specialization of the integer state for a bit-wise encoding. More...

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

Inheritance diagram for llvm::BitIntegerState< base_ty, BestState, WorstState >:

[legend]

Public Types
using	super = IntegerStateBase< base_ty, BestState, WorstState >

using	base_t = base_ty

Public Types inherited from llvm::IntegerStateBase< base_ty, BestState, WorstState >
using	base_t = base_ty

Public Member Functions
	BitIntegerState ()=default

	BitIntegerState (base_t Assumed)

bool	isKnown (base_t BitsEncoding=BestState) const
	Return true if the bits set in `BitsEncoding` are "known bits".

bool	isAssumed (base_t BitsEncoding=BestState) const
	Return true if the bits set in `BitsEncoding` are "assumed bits".

BitIntegerState &	addKnownBits (base_t Bits)
	Add the bits in `BitsEncoding` to the "known bits".

BitIntegerState &	removeAssumedBits (base_t BitsEncoding)
	Remove the bits in `BitsEncoding` from the "assumed bits" if not known.

BitIntegerState &	removeKnownBits (base_t BitsEncoding)
	Remove the bits in `BitsEncoding` from the "known bits".

BitIntegerState &	intersectAssumedBits (base_t BitsEncoding)
	Keep only "assumed bits" also set in `BitsEncoding` but all known ones.

Public Member Functions inherited from llvm::IntegerStateBase< base_ty, BestState, WorstState >
	IntegerStateBase ()=default

	IntegerStateBase (base_t Assumed)

bool	isValidState () const override
	See AbstractState::isValidState() NOTE: For now we simply pretend that the worst possible state is invalid.

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

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

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

base_t	getKnown () const
	Return the known state encoding.

base_t	getAssumed () const
	Return the assumed state encoding.

bool	operator== (const IntegerStateBase< base_t, BestState, WorstState > &R) const
	Equality for IntegerStateBase.

bool	operator!= (const IntegerStateBase< base_t, BestState, WorstState > &R) const
	Inequality for IntegerStateBase.

void	operator^= (const IntegerStateBase< base_t, BestState, WorstState > &R)
	"Clamp" this state with `R`.

void	operator+= (const IntegerStateBase< base_t, BestState, WorstState > &R)
	"Clamp" this state with `R`.

void	operator\|= (const IntegerStateBase< base_t, BestState, WorstState > &R)

void	operator&= (const IntegerStateBase< base_t, BestState, WorstState > &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.

Additional Inherited Members
Static Public Member Functions inherited from llvm::IntegerStateBase< base_ty, BestState, WorstState >
static constexpr base_t	getBestState ()
	Return the best possible representable state.

static constexpr base_t	getBestState (const IntegerStateBase &)

static constexpr base_t	getWorstState ()
	Return the worst possible representable state.

static constexpr base_t	getWorstState (const IntegerStateBase &)

virtual void	handleNewAssumedValue (base_t Value)=0
	Handle a new assumed value `Value`. Subtype dependent.

virtual void	handleNewKnownValue (base_t Value)=0
	Handle a new known value `Value`. Subtype dependent.

virtual void	joinOR (base_t AssumedValue, base_t KnownValue)=0
	Handle a value `Value`. Subtype dependent.

virtual void	joinAND (base_t AssumedValue, base_t KnownValue)=0
	Handle a new assumed value `Value`. Subtype dependent.

Protected Attributes inherited from llvm::IntegerStateBase< base_ty, BestState, WorstState >
base_t	Known = getWorstState()
	The known state encoding in an integer of type base_t.

base_t	Assumed = getBestState()
	The assumed state encoding in an integer of type base_t.

Detailed Description

template<typename base_ty = uint32_t, base_ty BestState = ~base_ty(0), base_ty WorstState = 0>
struct llvm::BitIntegerState< base_ty, BestState, WorstState >

Specialization of the integer state for a bit-wise encoding.

Definition at line 2742 of file Attributor.h.

Member Typedef Documentation

◆ base_t

template<typename base_ty = uint32_t, base_ty BestState = ~base_ty(0), base_ty WorstState = 0>

using llvm::BitIntegerState< base_ty, BestState, WorstState >::base_t = base_ty

Definition at line 2745 of file Attributor.h.

◆ super

template<typename base_ty = uint32_t, base_ty BestState = ~base_ty(0), base_ty WorstState = 0>

using llvm::BitIntegerState< base_ty, BestState, WorstState >::super = IntegerStateBase<base_ty, BestState, WorstState>

Definition at line 2744 of file Attributor.h.

Constructor & Destructor Documentation

◆ BitIntegerState() [1/2]

template<typename base_ty = uint32_t, base_ty BestState = ~base_ty(0), base_ty WorstState = 0>

llvm::BitIntegerState< base_ty, BestState, WorstState >::BitIntegerState ( )

default

◆ BitIntegerState() [2/2]

template<typename base_ty = uint32_t, base_ty BestState = ~base_ty(0), base_ty WorstState = 0>

llvm::BitIntegerState< base_ty, BestState, WorstState >::BitIntegerState ( base_t Assumed )

inline

Definition at line 2747 of file Attributor.h.

Member Function Documentation

◆ addKnownBits()

template<typename base_ty = uint32_t, base_ty BestState = ~base_ty(0), base_ty WorstState = 0>

BitIntegerState & llvm::BitIntegerState< base_ty, BestState, WorstState >::addKnownBits ( base_t Bits )

inline

Add the bits in BitsEncoding to the "known bits".

Definition at line 2760 of file Attributor.h.

References llvm::IntegerStateBase< base_ty, BestState, WorstState >::Assumed, and llvm::IntegerStateBase< base_ty, BestState, WorstState >::Known.

Referenced by llvm::AANoCapture::determineFunctionCaptureCapabilities().

◆ intersectAssumedBits()

template<typename base_ty = uint32_t, base_ty BestState = ~base_ty(0), base_ty WorstState = 0>

BitIntegerState & llvm::BitIntegerState< base_ty, BestState, WorstState >::intersectAssumedBits ( base_t BitsEncoding )

inline

Keep only "assumed bits" also set in BitsEncoding but all known ones.

Definition at line 2779 of file Attributor.h.

References llvm::IntegerStateBase< base_ty, BestState, WorstState >::Assumed, and llvm::IntegerStateBase< base_ty, BestState, WorstState >::Known.

Referenced by llvm::BitIntegerState< base_ty, BestState, WorstState >::removeAssumedBits().

◆ isAssumed()

template<typename base_ty = uint32_t, base_ty BestState = ~base_ty(0), base_ty WorstState = 0>

bool llvm::BitIntegerState< base_ty, BestState, WorstState >::isAssumed ( base_t BitsEncoding = BestState ) const

inline

Return true if the bits set in BitsEncoding are "assumed bits".

Definition at line 2755 of file Attributor.h.

References llvm::IntegerStateBase< base_ty, BestState, WorstState >::Assumed.

◆ isKnown()

template<typename base_ty = uint32_t, base_ty BestState = ~base_ty(0), base_ty WorstState = 0>

bool llvm::BitIntegerState< base_ty, BestState, WorstState >::isKnown ( base_t BitsEncoding = BestState ) const

inline

Return true if the bits set in BitsEncoding are "known bits".

Definition at line 2750 of file Attributor.h.

References llvm::IntegerStateBase< base_ty, BestState, WorstState >::Known.

Referenced by llvm::Attributor::isAssumedDead().

◆ removeAssumedBits()

template<typename base_ty = uint32_t, base_ty BestState = ~base_ty(0), base_ty WorstState = 0>

BitIntegerState & llvm::BitIntegerState< base_ty, BestState, WorstState >::removeAssumedBits ( base_t BitsEncoding )

inline

Remove the bits in BitsEncoding from the "assumed bits" if not known.

Definition at line 2768 of file Attributor.h.

References llvm::BitIntegerState< base_ty, BestState, WorstState >::intersectAssumedBits().

Referenced by llvm::AANoCapture::determineFunctionCaptureCapabilities().

◆ removeKnownBits()

template<typename base_ty = uint32_t, base_ty BestState = ~base_ty(0), base_ty WorstState = 0>

BitIntegerState & llvm::BitIntegerState< base_ty, BestState, WorstState >::removeKnownBits ( base_t BitsEncoding )

inline

Remove the bits in BitsEncoding from the "known bits".

Definition at line 2773 of file Attributor.h.

References llvm::IntegerStateBase< base_ty, BestState, WorstState >::Known.

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

include/llvm/Transforms/IPO/Attributor.h

Public Types

Public Member Functions

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ base_t

◆ super

Constructor & Destructor Documentation

◆ BitIntegerState() [1/2]

◆ BitIntegerState() [2/2]

Member Function Documentation

◆ addKnownBits()

◆ intersectAssumedBits()

◆ isAssumed()

◆ isKnown()

◆ removeAssumedBits()

◆ removeKnownBits()