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

[Madhur Amilkanthwar via llvm-commits]

madhur13490 wrote:

>Enabling this by default has been observed may lead to performance regressions
+1. I am also wondering what will be compile-time impact of this patch, given that you are now exploring more VFs.

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