[clang] [Clang] Emit type metadata on vtables when IRPGO instrumentation option is on. (PR #70841)

[Mingming Liu via cfe-commits]

minglotus-6 wrote:

> Somehow I missed those other uses of the ITANIUM prefix. Thanks for cleaning it up though I think the new names are more descriptive.

yep! I hope the new names helps more or less going forward. Thanks for the feedbacks!

https://github.com/llvm/llvm-project/pull/70841