[clang] [compiler-rt] [llvm] [IRPGO][ValueProfile] Instrument virtual table address that could be used to do virtual table address comparision for indirect-call-promotion. (PR #66825)

[Mingming Liu via cfe-commits]

minglotus-6 wrote:

I have been putting this on hold to coordinate with some tooling change (which likely become behind schedule).

At this point, both code reviews and testing the (pending) changes in would be much more time efficient if this initial change could get in sooner. 

Now with stacked reviews possible in llvm main branch, I'm planning to split the profile format change into https://github.com/llvm/llvm-project/pull/81691 first to mitigate the risk of repeated roll backs that comes with a PR with 2k lines. After the profile format change is in llvm main branch, will run 'git merge main' to update this PR.

https://github.com/llvm/llvm-project/pull/66825