[llvm] [InstCombine] Fold `(icmp pred (trunc nuw/nsw X), C)` -> `(icmp pred X, (zext/sext C))` (PR #87935)

[Vitaly Buka via llvm-commits]

vitalybuka wrote:

I guess we can fix forward by enabling `-msan-handle-icmp-exact`. it's used for unsigned already.

FYI @eugenis 



https://github.com/llvm/llvm-project/pull/87935