[llvm] [Attributor] Prevent infinite loop in AAGlobalValueInfoFloating (PR #94941)

[Johannes Doerfert via llvm-commits]

https://github.com/jdoerfert requested changes to this pull request.

The last time I tried to fix this was
https://github.com/llvm/llvm-project/commit/96da6dd6ba53bce5dbe822fe968c2b67ba9bc221#diff-1e57c839902157beb48b30b30060fd707592ec653aa770f817d6c25cf6092b88

I think this needs to go be similar, so, in checkForAllUses, as other places (not AAGlobalValueInfo) have the same problem at the end of the day.
So, above it checks for PHI users, we probably need to add non-init users.


https://github.com/llvm/llvm-project/pull/94941