[llvm] [InstCombine] Handle ceil division idiom (PR #100977)

[Antonio Frighetto via llvm-commits]

antoniofrighetto wrote:

Unless I'm missing something, ValueTracking seems to be lacking support of considering the possible overflow coming from *.with.overflow intrinsics, as computeOverflow currently returns MayOverflow when is guaranteed not to overflow. I'll be taking a look.

https://github.com/llvm/llvm-project/pull/100977