[llvm] [InstCombine] Simplify `icmp pred (sdiv exact X, C), (sdiv exact Y, C)` into `icmp pred X, Y` when C is positive (PR #76409)

[Nikita Popov via llvm-commits]

https://github.com/nikic approved this pull request.

LGTM

https://github.com/llvm/llvm-project/pull/76409