[llvm] [LV][NFC]Preselect folding style before choosing maxing VF, NFC. (PR #81885)

[Florian Hahn via llvm-commits]

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

LGTM, thanks!

In the title perhaps: while chosing the max VF ?
In the description, would that be more accurate?

> Does the analysis of the tail folding style before choosing max vector

Selects the tail-folding style while choosing the max vector factor?

https://github.com/llvm/llvm-project/pull/81885