llvm::ConstantPtrAuth Class Reference

A signed pointer, in the ptrauth sense. More...

#include "llvm/IR/Constants.h"

Inheritance diagram for llvm::ConstantPtrAuth:

Public Types
enum	{ AddrDiscriminator_CtorsDtors = 1 }
	A constant value for the address discriminator which has special significance to ctors/dtors lowering. More...
Public Types inherited from llvm::User
using	op_iterator = Use *
using	const_op_iterator = const Use *
using	op_range = iterator_range< op_iterator >
using	const_op_range = iterator_range< const_op_iterator >
Public Types inherited from llvm::Value
enum	ValueTy
	Concrete subclass of this. More...
using	use_iterator = use_iterator_impl< Use >
using	const_use_iterator = use_iterator_impl< const Use >
using	user_iterator = user_iterator_impl< User >
using	const_user_iterator = user_iterator_impl< const User >

Public Member Functions
LLVM_ABI ConstantPtrAuth *	getWithSameSchema (Constant *Pointer) const
	Produce a new ptrauth expression signing the given value using the same schema as is stored in one.
	DECLARE_TRANSPARENT_OPERAND_ACCESSORS (Constant)
	Transparently provide more efficient getOperand methods.
Constant *	getPointer () const
	The pointer that is signed in this ptrauth signed pointer.
ConstantInt *	getKey () const
	The Key ID, an i32 constant.
ConstantInt *	getDiscriminator () const
	The integer discriminator, an i64 constant, or 0.
Constant *	getAddrDiscriminator () const
	The address discriminator if any, or the null constant.
bool	hasAddressDiscriminator () const
	Whether there is any non-null address discriminator.
LLVM_ABI bool	hasSpecialAddressDiscriminator (uint64_t Value) const
	Whether the address uses a special address discriminator.
LLVM_ABI bool	isKnownCompatibleWith (const Value *Key, const Value *Discriminator, const DataLayout &DL) const
	Check whether an authentication operation with key Key and (possibly blended) discriminator Discriminator is known to be compatible with this ptrauth signed pointer.
Public Member Functions inherited from llvm::Constant
void	operator= (const Constant &)=delete
	Constant (const Constant &)=delete
LLVM_ABI bool	isNullValue () const
	Return true if this is the value that would be returned by getNullValue.
LLVM_ABI bool	isOneValue () const
	Returns true if the value is one.
LLVM_ABI bool	isNotOneValue () const
	Return true if the value is not the one value, or, for vectors, does not contain one value elements.
LLVM_ABI bool	isAllOnesValue () const
	Return true if this is the value that would be returned by getAllOnesValue.
LLVM_ABI bool	isNegativeZeroValue () const
	Return true if the value is what would be returned by getZeroValueForNegation.
LLVM_ABI bool	isZeroValue () const
	Return true if the value is negative zero or null value.
LLVM_ABI bool	isNotMinSignedValue () const
	Return true if the value is not the smallest signed value, or, for vectors, does not contain smallest signed value elements.
LLVM_ABI bool	isMinSignedValue () const
	Return true if the value is the smallest signed value.
LLVM_ABI bool	isFiniteNonZeroFP () const
	Return true if this is a finite and non-zero floating-point scalar constant or a fixed width vector constant with all finite and non-zero elements.
LLVM_ABI bool	isNormalFP () const
	Return true if this is a normal (as opposed to denormal, infinity, nan, or zero) floating-point scalar constant or a vector constant with all normal elements.
LLVM_ABI bool	hasExactInverseFP () const
	Return true if this scalar has an exact multiplicative inverse or this vector has an exact multiplicative inverse for each element in the vector.
LLVM_ABI bool	isNaN () const
	Return true if this is a floating-point NaN constant or a vector floating-point constant with all NaN elements.
LLVM_ABI bool	isElementWiseEqual (Value *Y) const
	Return true if this constant and a constant 'Y' are element-wise equal.
LLVM_ABI bool	containsUndefOrPoisonElement () const
	Return true if this is a vector constant that includes any undef or poison elements.
LLVM_ABI bool	containsPoisonElement () const
	Return true if this is a vector constant that includes any poison elements.
LLVM_ABI bool	containsUndefElement () const
	Return true if this is a vector constant that includes any strictly undef (not poison) elements.
LLVM_ABI bool	containsConstantExpression () const
	Return true if this is a fixed width vector constant that includes any constant expressions.
LLVM_ABI bool	isThreadDependent () const
	Return true if the value can vary between threads.
LLVM_ABI bool	isDLLImportDependent () const
	Return true if the value is dependent on a dllimport variable.
LLVM_ABI bool	isConstantUsed () const
	Return true if the constant has users other than constant expressions and other dangling things.
LLVM_ABI bool	needsRelocation () const
	This method classifies the entry according to whether or not it may generate a relocation entry (either static or dynamic).
LLVM_ABI bool	needsDynamicRelocation () const
LLVM_ABI Constant *	getAggregateElement (unsigned Elt) const
	For aggregates (struct/array/vector) return the constant that corresponds to the specified element if possible, or null if not.
LLVM_ABI Constant *	getAggregateElement (Constant *Elt) const
LLVM_ABI Constant *	getSplatValue (bool AllowPoison=false) const
	If all elements of the vector constant have the same value, return that value.
LLVM_ABI const APInt &	getUniqueInteger () const
	If C is a constant integer then return its value, otherwise C must be a vector of constant integers, all equal, and the common value is returned.
LLVM_ABI ConstantRange	toConstantRange () const
	Convert constant to an approximate constant range.
LLVM_ABI void	destroyConstant ()
	Called if some element of this constant is no longer valid.
LLVM_ABI void	handleOperandChange (Value *, Value *)
	This method is a special form of User::replaceUsesOfWith (which does not work on constants) that does work on constants.
LLVM_ABI void	removeDeadConstantUsers () const
	If there are any dead constant users dangling off of this constant, remove them.
LLVM_ABI bool	hasOneLiveUse () const
	Return true if the constant has exactly one live use.
LLVM_ABI bool	hasZeroLiveUses () const
	Return true if the constant has no live uses.
const Constant *	stripPointerCasts () const
Constant *	stripPointerCasts ()
LLVM_ABI bool	isManifestConstant () const
	Return true if a constant is ConstantData or a ConstantAggregate or ConstantExpr that contain only ConstantData.
Public Member Functions inherited from llvm::User
	User (const User &)=delete
LLVM_ABI void	operator delete (void *Usr)
	Free memory allocated for User and Use objects.
void	operator delete (void *Usr, HungOffOperandsAllocMarker)
	Placement delete - required by std, called if the ctor throws.
void	operator delete (void *Usr, IntrusiveOperandsAllocMarker)
	Placement delete - required by std, called if the ctor throws.
void	operator delete (void *Usr, IntrusiveOperandsAndDescriptorAllocMarker)
	Placement delete - required by std, called if the ctor throws.
const Use *	getOperandList () const
Use *	getOperandList ()
Value *	getOperand (unsigned i) const
void	setOperand (unsigned i, Value *Val)
const Use &	getOperandUse (unsigned i) const
Use &	getOperandUse (unsigned i)
unsigned	getNumOperands () const
LLVM_ABI ArrayRef< const uint8_t >	getDescriptor () const
	Returns the descriptor co-allocated with this User instance.
LLVM_ABI MutableArrayRef< uint8_t >	getDescriptor ()
	Returns the descriptor co-allocated with this User instance.
void	setNumHungOffUseOperands (unsigned NumOps)
	Subclasses with hung off uses need to manage the operand count themselves.
LLVM_ABI bool	isDroppable () const
	A droppable user is a user for which uses can be dropped without affecting correctness and should be dropped rather than preventing a transformation from happening.
op_iterator	op_begin ()
const_op_iterator	op_begin () const
op_iterator	op_end ()
const_op_iterator	op_end () const
op_range	operands ()
const_op_range	operands () const
value_op_iterator	value_op_begin ()
value_op_iterator	value_op_end ()
iterator_range< value_op_iterator >	operand_values ()
const_value_op_iterator	value_op_begin () const
const_value_op_iterator	value_op_end () const
iterator_range< const_value_op_iterator >	operand_values () const
void	dropAllReferences ()
	Drop all references to operands.
LLVM_ABI bool	replaceUsesOfWith (Value *From, Value *To)
	Replace uses of one Value with another.
Public Member Functions inherited from llvm::Value
	Value (const Value &)=delete
Value &	operator= (const Value &)=delete
LLVM_ABI void	deleteValue ()
	Delete a pointer to a generic Value.
LLVM_ABI void	dump () const
	Support for debugging, callable in GDB: V->dump()
Type *	getType () const
	All values are typed, get the type of this value.
LLVM_ABI LLVMContext &	getContext () const
	All values hold a context through their type.
bool	hasName () const
LLVM_ABI ValueName *	getValueName () const
LLVM_ABI void	setValueName (ValueName *VN)
LLVM_ABI StringRef	getName () const
	Return a constant reference to the value's name.
LLVM_ABI void	setName (const Twine &Name)
	Change the name of the value.
LLVM_ABI void	takeName (Value *V)
	Transfer the name from V to this value.
LLVM_ABI std::string	getNameOrAsOperand () const
LLVM_ABI void	replaceAllUsesWith (Value *V)
	Change all uses of this to point to a new Value.
LLVM_ABI void	replaceNonMetadataUsesWith (Value *V)
	Change non-metadata uses of this to point to a new Value.
LLVM_ABI void	replaceUsesWithIf (Value *New, llvm::function_ref< bool(Use &U)> ShouldReplace)
	Go through the uses list for this definition and make each use point to "V" if the callback ShouldReplace returns true for the given Use.
LLVM_ABI void	replaceUsesOutsideBlock (Value *V, BasicBlock *BB)
	replaceUsesOutsideBlock - Go through the uses list for this definition and make each use point to "V" instead of "this" when the use is outside the block.
LLVM_ABI void	assertModuleIsMaterializedImpl () const
void	assertModuleIsMaterialized () const
bool	hasUseList () const
	Check if this Value has a use-list.
bool	use_empty () const
bool	materialized_use_empty () const
use_iterator	materialized_use_begin ()
const_use_iterator	materialized_use_begin () const
use_iterator	use_begin ()
const_use_iterator	use_begin () const
use_iterator	use_end ()
const_use_iterator	use_end () const
iterator_range< use_iterator >	materialized_uses ()
iterator_range< const_use_iterator >	materialized_uses () const
iterator_range< use_iterator >	uses ()
iterator_range< const_use_iterator >	uses () const
bool	user_empty () const
user_iterator	materialized_user_begin ()
const_user_iterator	materialized_user_begin () const
user_iterator	user_begin ()
const_user_iterator	user_begin () const
user_iterator	user_end ()
const_user_iterator	user_end () const
User *	user_back ()
const User *	user_back () const
iterator_range< user_iterator >	materialized_users ()
iterator_range< const_user_iterator >	materialized_users () const
iterator_range< user_iterator >	users ()
iterator_range< const_user_iterator >	users () const
bool	hasOneUse () const
	Return true if there is exactly one use of this value.
LLVM_ABI bool	hasNUses (unsigned N) const
	Return true if this Value has exactly N uses.
LLVM_ABI bool	hasNUsesOrMore (unsigned N) const
	Return true if this value has N uses or more.
LLVM_ABI bool	hasOneUser () const
	Return true if there is exactly one user of this value.
LLVM_ABI Use *	getSingleUndroppableUse ()
	Return true if there is exactly one use of this value that cannot be dropped.
const Use *	getSingleUndroppableUse () const
LLVM_ABI User *	getUniqueUndroppableUser ()
	Return true if there is exactly one unique user of this value that cannot be dropped (that user can have multiple uses of this value).
const User *	getUniqueUndroppableUser () const
LLVM_ABI bool	hasNUndroppableUses (unsigned N) const
	Return true if there this value.
LLVM_ABI bool	hasNUndroppableUsesOrMore (unsigned N) const
	Return true if this value has N uses or more.
LLVM_ABI void	dropDroppableUses (llvm::function_ref< bool(const Use *)> ShouldDrop=[](const Use *) { return true;})
	Remove every uses that can safely be removed.
LLVM_ABI void	dropDroppableUsesIn (User &Usr)
	Remove every use of this value in User that can safely be removed.
LLVM_ABI bool	isUsedInBasicBlock (const BasicBlock *BB) const
	Check if this value is used in the specified basic block.
LLVM_ABI unsigned	getNumUses () const
	This method computes the number of uses of this Value.
void	addUse (Use &U)
	This method should only be used by the Use class.
unsigned	getValueID () const
	Return an ID for the concrete type of this object.
unsigned	getRawSubclassOptionalData () const
	Return the raw optional flags value contained in this value.
void	clearSubclassOptionalData ()
	Clear the optional flags contained in this value.
bool	hasSameSubclassOptionalData (const Value *V) const
	Check the optional flags for equality.
bool	hasValueHandle () const
	Return true if there is a value handle associated with this value.
bool	isUsedByMetadata () const
	Return true if there is metadata referencing this value.
LLVM_ABI bool	isSwiftError () const
	Return true if this value is a swifterror value.
LLVM_ABI const Value *	stripPointerCasts () const
	Strip off pointer casts, all-zero GEPs and address space casts.
Value *	stripPointerCasts ()
LLVM_ABI const Value *	stripPointerCastsAndAliases () const
	Strip off pointer casts, all-zero GEPs, address space casts, and aliases.
Value *	stripPointerCastsAndAliases ()
LLVM_ABI const Value *	stripPointerCastsSameRepresentation () const
	Strip off pointer casts, all-zero GEPs and address space casts but ensures the representation of the result stays the same.
Value *	stripPointerCastsSameRepresentation ()
LLVM_ABI const Value *	stripPointerCastsForAliasAnalysis () const
	Strip off pointer casts, all-zero GEPs, single-argument phi nodes and invariant group info.
Value *	stripPointerCastsForAliasAnalysis ()
LLVM_ABI const Value *	stripInBoundsConstantOffsets () const
	Strip off pointer casts and all-constant inbounds GEPs.
Value *	stripInBoundsConstantOffsets ()
LLVM_ABI const Value *	stripAndAccumulateConstantOffsets (const DataLayout &DL, APInt &Offset, bool AllowNonInbounds, bool AllowInvariantGroup=false, function_ref< bool(Value &Value, APInt &Offset)> ExternalAnalysis=nullptr, bool LookThroughIntToPtr=false) const
	Accumulate the constant offset this value has compared to a base pointer.
Value *	stripAndAccumulateConstantOffsets (const DataLayout &DL, APInt &Offset, bool AllowNonInbounds, bool AllowInvariantGroup=false, function_ref< bool(Value &Value, APInt &Offset)> ExternalAnalysis=nullptr, bool LookThroughIntToPtr=false)
const Value *	stripAndAccumulateInBoundsConstantOffsets (const DataLayout &DL, APInt &Offset) const
	This is a wrapper around stripAndAccumulateConstantOffsets with the in-bounds requirement set to false.
Value *	stripAndAccumulateInBoundsConstantOffsets (const DataLayout &DL, APInt &Offset)
LLVM_ABI const Value *	stripInBoundsOffsets (function_ref< void(const Value *)> Func=[](const Value *) {}) const
	Strip off pointer casts and inbounds GEPs.
Value *	stripInBoundsOffsets (function_ref< void(const Value *)> Func=[](const Value *) {})
LLVM_ABI std::optional< int64_t >	getPointerOffsetFrom (const Value *Other, const DataLayout &DL) const
	If this ptr is provably equal to Other plus a constant offset, return that offset in bytes.
LLVM_ABI bool	canBeFreed () const
	Return true if the memory object referred to by V can by freed in the scope for which the SSA value defining the allocation is statically defined.
LLVM_ABI uint64_t	getPointerDereferenceableBytes (const DataLayout &DL, bool &CanBeNull, bool &CanBeFreed) const
	Returns the number of bytes known to be dereferenceable for the pointer value.
LLVM_ABI Align	getPointerAlignment (const DataLayout &DL) const
	Returns an alignment of the pointer value.
LLVM_ABI const Value *	DoPHITranslation (const BasicBlock *CurBB, const BasicBlock *PredBB) const
	Translate PHI node to its predecessor from the given basic block.
Value *	DoPHITranslation (const BasicBlock *CurBB, const BasicBlock *PredBB)
void	mutateType (Type *Ty)
	Mutate the type of this Value to be of the specified type.
template<class Compare >
void	sortUseList (Compare Cmp)
	Sort the use-list.
LLVM_ABI void	reverseUseList ()
	Reverse the use-list.
LLVM_ABI void	print (raw_ostream &O, bool IsForDebug=false) const
	Implement operator<< on Value.
LLVM_ABI void	print (raw_ostream &O, ModuleSlotTracker &MST, bool IsForDebug=false) const
LLVM_ABI void	printAsOperand (raw_ostream &O, bool PrintType=true, const Module *M=nullptr) const
	Print the name of this Value out to the specified raw_ostream.
LLVM_ABI void	printAsOperand (raw_ostream &O, bool PrintType, ModuleSlotTracker &MST) const

Static Public Member Functions
static LLVM_ABI ConstantPtrAuth *	get (Constant *Ptr, ConstantInt *Key, ConstantInt *Disc, Constant *AddrDisc)
	Return a pointer signed with the specified parameters.
static bool	classof (const Value *V)
	Methods for support type inquiry through isa, cast, and dyn_cast:
Static Public Member Functions inherited from llvm::Constant
static bool	classof (const Value *V)
static LLVM_ABI Constant *	getNullValue (Type *Ty)
	Constructor to create a '0' constant of arbitrary type.
static LLVM_ABI Constant *	getAllOnesValue (Type *Ty)
static LLVM_ABI Constant *	getIntegerValue (Type *Ty, const APInt &V)
	Return the value for an integer or pointer constant, or a vector thereof, with the given scalar value.
static LLVM_ABI Constant *	replaceUndefsWith (Constant *C, Constant *Replacement)
	Try to replace undefined constant C or undefined elements in C with Replacement.
static LLVM_ABI Constant *	mergeUndefsWith (Constant *C, Constant *Other)
	Merges undefs of a Constant with another Constant, along with the undefs already present.
Static Public Member Functions inherited from llvm::User
static bool	classof (const Value *V)
Static Public Member Functions inherited from llvm::Value
static LLVM_ABI void	dropDroppableUse (Use &U)
	Remove the droppable use U.

Friends
struct	ConstantPtrAuthKeyType
class	Constant

Additional Inherited Members
Static Public Attributes inherited from llvm::Value
static constexpr unsigned	MaxAlignmentExponent = 32
	The maximum alignment for instructions.
static constexpr uint64_t	MaximumAlignment = 1ULL << MaxAlignmentExponent
Protected Types inherited from llvm::Value
enum	: unsigned { NumUserOperandsBits = 27 }
	The number of operands in the subclass. More...
Protected Member Functions inherited from llvm::Constant
	Constant (Type *ty, ValueTy vty, AllocInfo AllocInfo)
	~Constant ()=default
Protected Member Functions inherited from llvm::User
void *	operator new (size_t Size)=delete
LLVM_ABI void *	operator new (size_t Size, HungOffOperandsAllocMarker)
	Allocate a User with an operand pointer co-allocated.
LLVM_ABI void *	operator new (size_t Size, IntrusiveOperandsAllocMarker allocTrait)
	Allocate a User with the operands co-allocated.
LLVM_ABI void *	operator new (size_t Size, IntrusiveOperandsAndDescriptorAllocMarker allocTrait)
	Allocate a User with the operands co-allocated.
	User (Type *ty, unsigned vty, AllocInfo AllocInfo)
LLVM_ABI void	allocHungoffUses (unsigned N, bool IsPhi=false)
	Allocate the array of Uses, followed by a pointer (with bottom bit set) to the User.
LLVM_ABI void	growHungoffUses (unsigned N, bool IsPhi=false)
	Grow the number of hung off uses.
	~User ()=default
template<int Idx>
Use &	Op ()
template<int Idx>
const Use &	Op () const
Protected Member Functions inherited from llvm::Value
LLVM_ABI	Value (Type *Ty, unsigned scid)
LLVM_ABI	~Value ()
	Value's destructor should be virtual by design, but that would require that Value and all of its subclasses have a vtable that effectively duplicates the information in the value ID.
LLVM_ABI void	getAllMetadata (SmallVectorImpl< std::pair< unsigned, MDNode * > > &MDs) const
	Appends all metadata attached to this value to MDs, sorting by KindID.
bool	hasMetadata () const
	Return true if this value has any metadata attached to it.
LLVM_ABI bool	eraseMetadata (unsigned KindID)
	Erase all metadata attachments with the given kind.
LLVM_ABI void	eraseMetadataIf (function_ref< bool(unsigned, MDNode *)> Pred)
	Erase all metadata attachments matching the given predicate.
LLVM_ABI void	clearMetadata ()
	Erase all metadata attached to this Value.
LLVM_ABI MDNode *	getMetadataImpl (unsigned KindID) const
	Get metadata for the given kind, if any.
unsigned short	getSubclassDataFromValue () const
void	setValueSubclassData (unsigned short D)
MDNode *	getMetadata (unsigned KindID) const
	Get the current metadata attachments for the given kind, if any.
LLVM_ABI MDNode *	getMetadata (StringRef Kind) const
LLVM_ABI void	getMetadata (unsigned KindID, SmallVectorImpl< MDNode * > &MDs) const
	Appends all attachments with the given ID to MDs in insertion order.
LLVM_ABI void	getMetadata (StringRef Kind, SmallVectorImpl< MDNode * > &MDs) const
bool	hasMetadata (unsigned KindID) const
	Return true if this value has the given type of metadata attached.
bool	hasMetadata (StringRef Kind) const
LLVM_ABI void	setMetadata (unsigned KindID, MDNode *Node)
	Set a particular kind of metadata attachment.
LLVM_ABI void	setMetadata (StringRef Kind, MDNode *Node)
LLVM_ABI void	addMetadata (unsigned KindID, MDNode &MD)
	Add a metadata attachment.
LLVM_ABI void	addMetadata (StringRef Kind, MDNode &MD)
Static Protected Member Functions inherited from llvm::User
template<int Idx, typename U >
static Use &	OpFrom (const U *that)
Protected Attributes inherited from llvm::Value
unsigned char	SubclassOptionalData: 7
	Hold subclass data that can be dropped.
unsigned	NumUserOperands: NumUserOperandsBits
unsigned	IsUsedByMD: 1
unsigned	HasName: 1
unsigned	HasMetadata: 1
unsigned	HasHungOffUses: 1
unsigned	HasDescriptor: 1

Detailed Description

A signed pointer, in the ptrauth sense.

Definition at line 1032 of file Constants.h.

Member Enumeration Documentation

anonymous enum

anonymous enum

A constant value for the address discriminator which has special significance to ctors/dtors lowering.

Regular address discrimination can't be applied for them since uses of llvm.global_{c|d}tors are disallowed (see Verifier::visitGlobalVariable) and we can't emit getelementptr expressions referencing these special arrays.

Enumerator
AddrDiscriminator_CtorsDtors

Definition at line 1086 of file Constants.h.

Member Function Documentation

classof()

static bool llvm::ConstantPtrAuth::classof ( const Value *  V )

inlinestatic

Methods for support type inquiry through isa, cast, and dyn_cast:

Definition at line 1102 of file Constants.h.

DECLARE_TRANSPARENT_OPERAND_ACCESSORS()

llvm::ConstantPtrAuth::DECLARE_TRANSPARENT_OPERAND_ACCESSORS

(

Constant

)

Transparently provide more efficient getOperand methods.

get()

ConstantPtrAuth * ConstantPtrAuth::get ( Constant *  Ptr, ConstantInt *  Key, ConstantInt *  Disc, Constant *  AddrDisc  )

static

Return a pointer signed with the specified parameters.

Definition at line 2063 of file Constants.cpp.

References llvm::LLVMContextImpl::ConstantPtrAuths, and Ptr.

Referenced by llvm::sandboxir::ConstantPtrAuth::get(), getWithSameSchema(), LLVMConstantPtrAuth(), and llvm::InstCombinerImpl::visitCallInst().

getAddrDiscriminator()

Constant * llvm::ConstantPtrAuth::getAddrDiscriminator ( ) const

inline

The address discriminator if any, or the null constant.

If present, this must be a value equivalent to the storage location of the only global-initializer user of the ptrauth signed pointer.

Definition at line 1072 of file Constants.h.

References llvm::get().

Referenced by getWithSameSchema(), hasSpecialAddressDiscriminator(), and isKnownCompatibleWith().

getDiscriminator()

ConstantInt * llvm::ConstantPtrAuth::getDiscriminator ( ) const

inline

The integer discriminator, an i64 constant, or 0.

Definition at line 1065 of file Constants.h.

References llvm::get().

Referenced by llvm::MachineIRBuilder::buildConstantPtrAuth(), getWithSameSchema(), and isKnownCompatibleWith().

getKey()

ConstantInt * llvm::ConstantPtrAuth::getKey ( ) const

inline

The Key ID, an i32 constant.

Definition at line 1062 of file Constants.h.

References llvm::get().

Referenced by llvm::MachineIRBuilder::buildConstantPtrAuth(), getWithSameSchema(), and isKnownCompatibleWith().

getPointer()

Constant * llvm::ConstantPtrAuth::getPointer ( ) const

inline

The pointer that is signed in this ptrauth signed pointer.

Definition at line 1059 of file Constants.h.

References llvm::get().

getWithSameSchema()

ConstantPtrAuth * ConstantPtrAuth::getWithSameSchema

(

Constant *

Pointer

)

const

Produce a new ptrauth expression signing the given value using the same schema as is stored in one.

Definition at line 2071 of file Constants.cpp.

References get(), getAddrDiscriminator(), getDiscriminator(), and getKey().

hasAddressDiscriminator()

bool llvm::ConstantPtrAuth::hasAddressDiscriminator ( ) const

inline

Whether there is any non-null address discriminator.

Definition at line 1077 of file Constants.h.

Referenced by isKnownCompatibleWith().

hasSpecialAddressDiscriminator()

bool ConstantPtrAuth::hasSpecialAddressDiscriminator

(

uint64_t

Value

)

const

Whether the address uses a special address discriminator.

These discriminators can't be used in real pointer-auth values; they can only be used in "prototype" values that indicate how some real schema is supposed to be produced.

Definition at line 2118 of file Constants.cpp.

References getAddrDiscriminator().

isKnownCompatibleWith()

bool ConstantPtrAuth::isKnownCompatibleWith	(	const Value *	Key,
		const Value *	Discriminator,
		const DataLayout &	DL
	)		const

Check whether an authentication operation with key Key and (possibly blended) discriminator Discriminator is known to be compatible with this ptrauth signed pointer.

Definition at line 2130 of file Constants.cpp.

References DL, getAddrDiscriminator(), getDiscriminator(), getKey(), llvm::Value::getType(), hasAddressDiscriminator(), llvm::Constant::isNullValue(), llvm::PatternMatch::m_Specific(), llvm::PatternMatch::m_Value(), llvm::PatternMatch::match(), and llvm::Value::stripAndAccumulateConstantOffsets().

Friends And Related Function Documentation

Constant

friend class Constant

friend

Definition at line 1034 of file Constants.h.

ConstantPtrAuthKeyType

friend struct ConstantPtrAuthKeyType

friend

Definition at line 1033 of file Constants.h.

---

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

• include/llvm/IR/Constants.h
• lib/IR/Constants.cpp