[llvm] [SCEV] Rework wrap-flag-inferrence in zext-addrec (PR #217405)

[Ramkumar Ramachandra via llvm-commits]

artagnon wrote:

Compile-time improvement: https://llvm-compile-time-tracker.com/compare.php?from=2d697458ac3f472e666b7f47586da362839cfacb&to=61bfd461535d62a148ae4629af7ac74c5aad7820&stat=instructions:u

We still need to fix the optimization regressions -- there are quite a few.

https://github.com/llvm/llvm-project/pull/217405