[llvm] [LV] Enable considering higher VFs when data extend ops are present i… (PR #137593)

[Sushant Gokhale via llvm-commits]

sushgokh wrote:

> I am also wondering what will be compile-time impact of this patch, given that you are now exploring more VFs.

Since this is enabling more profitable code, I didnt bother much to measure this. But will try to do so

https://github.com/llvm/llvm-project/pull/137593