[llvm] [LV] Vectorize selecting last IV of min/max element. (PR #141431)

[Ramkumar Ramachandra via llvm-commits]

artagnon wrote:

> Currently it does not. If/when #163460 land, we can easily merge them as part of #163460 I think

Could we land #163460 and simplify this patch a bit?

https://github.com/llvm/llvm-project/pull/141431