An abstract interface for value simplify abstract attribute. More...

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

Inheritance diagram for llvm::AAValueSimplify:

[legend]

Public Types
using	Base = StateWrapper< ValueSimplifyStateType, AbstractAttribute, Type * >

Public Types inherited from llvm::StateWrapper< ValueSimplifyStateType, AbstractAttribute, Type * >
using	StateType = ValueSimplifyStateType
	Provide static access to the type of the state.

Public Types inherited from llvm::AbstractAttribute
using	StateType = AbstractState

Public Types inherited from llvm::IRPosition
enum	Kind : char { IRP_INVALID , IRP_FLOAT , IRP_RETURNED , IRP_CALL_SITE_RETURNED , IRP_FUNCTION , IRP_CALL_SITE , IRP_ARGUMENT , IRP_CALL_SITE_ARGUMENT }
	The positions we distinguish in the IR. More...

using	CallBaseContext = CallBase

Public Types inherited from llvm::AADepGraphNode
using	DepTy = PointerIntPair< AADepGraphNode *, 1 >

using	DepSetTy = SmallSetVector< DepTy, 2 >

using	iterator = mapped_iterator< DepSetTy::iterator, decltype(&DepGetVal)>

using	aaiterator = mapped_iterator< DepSetTy::iterator, decltype(&DepGetValAA)>

Public Member Functions
	AAValueSimplify (const IRPosition &IRP, Attributor &A)

const std::string	getName () const override
	See AbstractAttribute::getName()

const char *	getIdAddr () const override
	See AbstractAttribute::getIdAddr()

Public Member Functions inherited from llvm::StateWrapper< ValueSimplifyStateType, AbstractAttribute, Type * >
	StateWrapper (const IRPosition &IRP, Ts... Args)

StateType &	getState () override
	See AbstractAttribute::getState(...).

const StateType &	getState () const override
	See AbstractAttribute::getState(...).

Public Member Functions inherited from llvm::AbstractAttribute
	AbstractAttribute (const IRPosition &IRP)

virtual	~AbstractAttribute ()=default
	Virtual destructor.

virtual void	initialize (Attributor &A)
	Initialize the state with the information in the Attributor `A`.

virtual bool	isQueryAA () const
	A query AA is always scheduled as long as we do updates because it does lazy computation that cannot be determined to be done from the outside.

virtual StateType &	getState ()=0
	Return the internal abstract state for inspection.

virtual const StateType &	getState () const =0

const IRPosition &	getIRPosition () const
	Return an IR position, see struct IRPosition.

IRPosition &	getIRPosition ()

void	print (raw_ostream &OS) const override
	Helper functions, for debug purposes only.

virtual void	printWithDeps (raw_ostream &OS) const

void	dump () const

virtual const std::string	getAsStr () const =0
	This function should return the "summarized" assumed state as string.

virtual const std::string	getName () const =0
	This function should return the name of the AbstractAttribute.

virtual const char *	getIdAddr () const =0
	This function should return the address of the ID of the AbstractAttribute.

Public Member Functions inherited from llvm::IRPosition
	IRPosition ()
	Default constructor available to create invalid positions implicitly.

bool	operator== (const IRPosition &RHS) const

bool	operator!= (const IRPosition &RHS) const

Value &	getAnchorValue () const
	Return the value this abstract attribute is anchored with.

Function *	getAssociatedFunction () const
	Return the associated function, if any.

Argument *	getAssociatedArgument () const
	Return the associated argument, if any.

bool	isFnInterfaceKind () const
	Return true if the position refers to a function interface, that is the function scope, the function return, or an argument.

Function *	getAnchorScope () const
	Return the Function surrounding the anchor value.

Instruction *	getCtxI () const
	Return the context instruction, if any.

Value &	getAssociatedValue () const
	Return the value this abstract attribute is associated with.

Type *	getAssociatedType () const
	Return the type this abstract attribute is associated with.

int	getCalleeArgNo () const
	Return the callee argument number of the associated value if it is an argument or call site argument, otherwise a negative value.

int	getCallSiteArgNo () const
	Return the call site argument number of the associated value if it is an argument or call site argument, otherwise a negative value.

unsigned	getAttrIdx () const
	Return the index in the attribute list for this position.

Kind	getPositionKind () const
	Return the associated position kind.

bool	hasAttr (ArrayRef< Attribute::AttrKind > AKs, bool IgnoreSubsumingPositions=false, Attributor *A=nullptr) const
	TODO: Figure out if the attribute related helper functions should live here or somewhere else.

void	getAttrs (ArrayRef< Attribute::AttrKind > AKs, SmallVectorImpl< Attribute > &Attrs, bool IgnoreSubsumingPositions=false, Attributor *A=nullptr) const
	Return the attributes of any kind in `AKs` existing in the IR at a position that will affect this one.

void	removeAttrs (ArrayRef< Attribute::AttrKind > AKs) const
	Remove the attribute of kind `AKs` existing in the IR at this position.

bool	isAnyCallSitePosition () const

bool	isArgumentPosition () const
	Return true if the position is an argument or call site argument.

IRPosition	stripCallBaseContext () const
	Return the same position without the call base context.

const CallBaseContext *	getCallBaseContext () const
	Get the call base context from the position.

bool	hasCallBaseContext () const
	Check if the position has any call base context.

	operator void * () const
	}

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

aaiterator	begin ()

aaiterator	end ()

iterator	child_begin ()

iterator	child_end ()

virtual void	print (raw_ostream &OS) const

DepSetTy &	getDeps ()

Public Member Functions inherited from llvm::ValueSimplifyStateType
	ValueSimplifyStateType (Type *Ty)

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

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

ValueSimplifyStateType	getAssumed ()
	Return the assumed state encoding.

const ValueSimplifyStateType &	getAssumed () const

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

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

ValueSimplifyStateType	operator^= (const ValueSimplifyStateType &VS)
	"Clamp" this state with `PVS`.

bool	operator== (const ValueSimplifyStateType &RHS) const

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 AAValueSimplify &	createForPosition (const IRPosition &IRP, Attributor &A)
	Create an abstract attribute view for the position `IRP`.

static bool	classof (const AbstractAttribute *AA)
	This function should return true if the type of the `AA` is AAValueSimplify.

Static Public Member Functions inherited from llvm::AbstractAttribute
static bool	classof (const AADepGraphNode *DGN)
	This function is used to identify if an `DGN` is of type AbstractAttribute so that the dyn_cast and cast can use such information to cast an AADepGraphNode to an AbstractAttribute.

Static Public Member Functions inherited from llvm::IRPosition
static const IRPosition	value (const Value &V, const CallBaseContext *CBContext=nullptr)
	Create a position describing the value of `V`.

static const IRPosition	inst (const Instruction &I, const CallBaseContext *CBContext=nullptr)
	Create a position describing the instruction `I`.

static const IRPosition	function (const Function &F, const CallBaseContext *CBContext=nullptr)
	Create a position describing the function scope of `F`.

static const IRPosition	returned (const Function &F, const CallBaseContext *CBContext=nullptr)
	Create a position describing the returned value of `F`.

static const IRPosition	argument (const Argument &Arg, const CallBaseContext *CBContext=nullptr)
	Create a position describing the argument `Arg`.

static const IRPosition	callsite_function (const CallBase &CB)
	Create a position describing the function scope of `CB`.

static const IRPosition	callsite_returned (const CallBase &CB)
	Create a position describing the returned value of `CB`.

static const IRPosition	callsite_argument (const CallBase &CB, unsigned ArgNo)
	Create a position describing the argument of `CB` at position `ArgNo`.

static const IRPosition	callsite_argument (AbstractCallSite ACS, unsigned ArgNo)
	Create a position describing the argument of `ACS` at position `ArgNo`.

static const IRPosition	function_scope (const IRPosition &IRP, const CallBaseContext *CBContext=nullptr)
	Create a position with function scope matching the "context" of `IRP`.

Static Public Member Functions inherited from llvm::ValueSimplifyStateType
static ValueSimplifyStateType	getBestState (Type *Ty)

static ValueSimplifyStateType	getBestState (const ValueSimplifyStateType &VS)

static ValueSimplifyStateType	getWorstState (Type *Ty)
	Return the worst possible representable state.

static ValueSimplifyStateType	getWorstState (const ValueSimplifyStateType &VS)

Static Public Attributes
static const char	ID = 0
	Unique ID (due to the unique address)

Static Public Attributes inherited from llvm::IRPosition
static const IRPosition	EmptyKey
	Special DenseMap key values.

static const IRPosition	TombstoneKey

Friends
struct	Attributor

Additional Inherited Members
Protected Member Functions inherited from llvm::AbstractAttribute
ChangeStatus	update (Attributor &A)
	Hook for the Attributor to trigger an update of the internal state.

virtual ChangeStatus	manifest (Attributor &A)
	Hook for the Attributor to trigger the manifestation of the information represented by the abstract attribute in the LLVM-IR.

virtual void	trackStatistics () const =0
	Hook to enable custom statistic tracking, called after manifest that resulted in a change if statistics are enabled.

virtual ChangeStatus	updateImpl (Attributor &A)=0
	The actual update/transfer function which has to be implemented by the derived classes.

Protected Member Functions inherited from llvm::AADepGraphNode
	operator AbstractAttribute * ()

Protected Member Functions inherited from llvm::ValueSimplifyStateType
bool	unionAssumed (std::optional< Value * > Other)
	Merge `Other` into the currently assumed simplified value.

Static Protected Member Functions inherited from llvm::AADepGraphNode
static AADepGraphNode *	DepGetVal (const DepTy &DT)

static AbstractAttribute *	DepGetValAA (const DepTy &DT)

Protected Attributes inherited from llvm::AADepGraphNode
DepSetTy	Deps
	Set of dependency graph nodes which should be updated if this one is updated.

Protected Attributes inherited from llvm::ValueSimplifyStateType
Type *	Ty
	The type of the original value.

BooleanState	BS
	Helper to track validity and fixpoint.

std::optional< Value * >	SimplifiedAssociatedValue
	An assumed simplified value.

Detailed Description

An abstract interface for value simplify abstract attribute.

Definition at line 4195 of file Attributor.h.

Member Typedef Documentation

◆ Base

using llvm::AAValueSimplify::Base = StateWrapper<ValueSimplifyStateType, AbstractAttribute, Type *>

Definition at line 4197 of file Attributor.h.

Constructor & Destructor Documentation

◆ AAValueSimplify()

llvm::AAValueSimplify::AAValueSimplify	(	const IRPosition &	IRP,
		Attributor &	A
	)

inline

Definition at line 4198 of file Attributor.h.

Member Function Documentation

◆ classof()

static bool llvm::AAValueSimplify::classof ( const AbstractAttribute * AA )

inlinestatic

This function should return true if the type of the AA is AAValueSimplify.

Definition at line 4213 of file Attributor.h.

References llvm::AbstractAttribute::getIdAddr().

◆ createForPosition()

static AAValueSimplify & llvm::AAValueSimplify::createForPosition	(	const IRPosition &	IRP,
		Attributor &	A
	)

static

Create an abstract attribute view for the position IRP.

◆ getIdAddr()

const char * llvm::AAValueSimplify::getIdAddr ( ) const

inlineoverridevirtual

See AbstractAttribute::getIdAddr()

Implements llvm::AbstractAttribute.

Definition at line 4209 of file Attributor.h.

References ID.

◆ getName()

const std::string llvm::AAValueSimplify::getName ( ) const

inlineoverridevirtual

See AbstractAttribute::getName()

Implements llvm::AbstractAttribute.

Definition at line 4206 of file Attributor.h.

Friends And Related Function Documentation

◆ Attributor

friend struct Attributor

friend

Definition at line 4229 of file Attributor.h.

Member Data Documentation

◆ ID

const char AAValueSimplify::ID = 0

static

Unique ID (due to the unique address)

Definition at line 4218 of file Attributor.h.

Referenced by getIdAddr().

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

include/llvm/Transforms/IPO/Attributor.h
lib/Transforms/IPO/AttributorAttributes.cpp

Public Types

Public Member Functions

Static Public Member Functions

Static Public Attributes

Friends

Additional Inherited Members