[clang] [CIR] Add VTableAddrPointOp (PR #148730)

[Bruno Cardoso Lopes via cfe-commits]

================
@@ -515,5 +515,35 @@ def BitfieldInfoAttr : CIR_Attr<"BitfieldInfo", "bitfield_info"> {
   ];
 }
 
+//===----------------------------------------------------------------------===//
+// AddressPointAttr
+//===----------------------------------------------------------------------===//
+
+def AddressPointAttr : CIR_Attr<"AddressPoint", "address_point"> {
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bcardosolopes wrote:

> Do we have any consensus on how this should be handled?

We probably agree it should be easy to read / informative for passes?

> I've left the attribute, based on supposition of future usefulness, but I'm not opposed to separate attributes as @xlauko suggests.

SGTM - I'm not particularly tied to whether this is encoded directly in the op with pretty printing (e.g. `index = ...`, etc) or via an attribute wrapper.

https://github.com/llvm/llvm-project/pull/148730