9 // This class provides a simple wrapper for a pair of a pointer and an
32 // Indicates whether a pointer is known not to be null.
41 /// The pointer contained in this class is known to be unsigned.
51   RawAddress(llvm::Value *Pointer, llvm::Type *ElementType, CharUnits Alignment,
53       : PointerAndKnownNonNull(Pointer, IsKnownNonNull),  in PointerAndKnownNonNull()  argument
55     assert(Pointer != nullptr && "Pointer cannot be null");  in PointerAndKnownNonNull()
71   /// Return the type of the pointer value.
87   /// Return the IR name of the pointer value.
92   /// Return the alignment of this pointer.
98   /// Return address with different element type, but same pointer and
111 /// pointer contained in this class is possibly signed.
120 /// pointer, or *signed*, meaning that the pointer carries an embedded
121 /// pointer-authentication signature. Representing signed pointers directly in
125 /// every API that manipulates addresses. Pointer arithmetic on signed addresses
131   // The boolean flag indicates whether the pointer is known to be non-null.
132   llvm::PointerIntPair<llvm::Value *, 1, bool> Pointer;  variable
134   /// The expected IR type of the pointer. Carrying accurate element type
141   /// The ptrauth information needed to authenticate the base pointer.
144   /// Offset from the base pointer. This is non-null only when the base
145   /// pointer is signed.
154   Address(llvm::Value *pointer, llvm::Type *elementType, CharUnits alignment,
156       : Pointer(pointer, IsKnownNonNull), ElementType(elementType),  in Pointer()  argument
158     assert(pointer != nullptr && "Pointer cannot be null");  in Pointer()
166       : Pointer(BasePtr, IsKnownNonNull), ElementType(ElementType),  in Pointer()  function
170       : Pointer(RawAddr.isValid() ? RawAddr.getPointer() : nullptr,  in Address()
177   bool isValid() const { return Pointer.getPointer() != nullptr; }  in isValid()
180   /// opaque "laundering" of the pointer.
182     assert(isValid() && "pointer isn't valid");  in replaceBasePointer()
183     assert(P->getType() == Pointer.getPointer()->getType() &&  in replaceBasePointer()
184            "Pointer's type changed");  in replaceBasePointer()
185     Pointer.setPointer(P);  in replaceBasePointer()
186     assert(isValid() && "pointer is invalid after replacement");  in replaceBasePointer()
194     assert(isValid() && "pointer isn't valid");  in getBasePointer()
195     return Pointer.getPointer();  in getBasePointer()
198   /// Return the type of the pointer value.
202         llvm::cast<llvm::PointerType>(Pointer.getPointer()->getType())  in getType()
215   /// Return the IR name of the pointer value.
216   llvm::StringRef getName() const { return Pointer.getPointer()->getName(); }  in getName()
230   /// Whether the pointer is known not to be null.
233     return (KnownNonNull_t)Pointer.getInt();  in isKnownNonNull()
238     Pointer.setInt(KnownNonNull);  in setKnownNonNull()
249   /// Return the pointer contained in this class after authenticating it and
257   /// Return address with different pointer, but same element type and
265   /// Return address with different alignment, but same pointer and element
268     return Address(Pointer.getPointer(), getElementType(), NewAlignment,  in withAlignment()
272   /// Return address with different element type, but same pointer and
298   ConstantAddress(llvm::Constant *pointer, llvm::Type *elementType,  in ConstantAddress()  argument
300       : RawAddress(pointer, elementType, alignment) {}  in ConstantAddress()