[llvm] [InstCombine] Don't check uses of constant exprs (PR #113684)

[Mikael Holmén via llvm-commits]

https://github.com/mikaelholmen commented:

I've verified that this solves the problem I saw.

Looks good to mne, but I'm not very familiar with this so please wait for someone else to accept it.

Thanks!

https://github.com/llvm/llvm-project/pull/113684