[llvm] [LV]: Ensure fairness when selecting epilogue VF. (PR #155547)

[David Sherwood via llvm-commits]

david-arm wrote:

> > It looks like `LLVM.Transforms/LoopVectorize/AArch64/interleaving-reduction.ll` is failing in pre-commit, probably needs a rebase + test update?
> 
> It fails as expected, I tried to strip out the renaming to show you the difference of the logic. After you see the changes, I will update the file again.

I guess it's probably a bit easier for reviewers to pre-commit a NFC patch that regenerates the CHECK lines first, either in a separate PR or as an initial commit to a PR.

https://github.com/llvm/llvm-project/pull/155547