================
@@ -80,6 +94,139 @@ class Address {
return Alignment;
}
+ /// Return address with different element type, but same pointer and
+ /// alignment.
+ RawAddress withElementType(llvm::Type *ElemTy) const {
+ return RawAddress(getPointer(), ElemTy, getAlignment(), isKnownNonNull());
+ }
+
+ KnownNonNull_t isKnownNonNull() const {
+ assert(isValid());
+ return (KnownNonNull_t)PointerAndKnownNonNull.getInt();
+ }
+};
+
+/// Like RawAddress, an abstract representation of an aligned address, but the
+/// pointer contained in this class is possibly signed.
+class Address {
+ friend class CGBuilderTy;
+
+ // The boolean flag indicates whether the pointer is known to be non-null.
+ llvm::PointerIntPair<llvm::Value *, 1, bool> Pointer;
+
+ /// The expected IR type of the pointer. When the address is a raw pointer,
+ /// this is currently redundant with the pointer's type, but for signed
+ /// pointers it is useful if the pointer has been offsetted or cast from the
+ /// original type. In the long run, when LLVM adopts opaque pointer types,
+ /// this should become the notional element type of the address.
----------------
efriedma-quic wrote:
This comment probably needs to be updated?
https://github.com/llvm/llvm-project/pull/67454
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