[llvm] Fix: Distinguish CFI Metadata Checks in MergeFunctions Pass (PR #65963)

[Oskar Wirga via llvm-commits]

oskarwirga wrote:

> > CC: @dexonsmith
> 
> Can you also pull in the other reviewers from the Phabricator patch? (And if none of them did significant work on MergeFunctions, perhaps look through Git history to find someone who did...)

Apparently I need write access to be able to add reviewers, I can't add them on my own :( 

https://github.com/llvm/llvm-project/pull/65963