[llvm] [LV] Check for vector-to-scalar casts in legalizer (PR #106244)

[via llvm-commits]

ErikHogeman wrote:

> LGTM, modulo some comments. Kindly wait for @fhahn or someone else on the reviewer list for the final sign-off.

Thanks again for the review!

I will wait until the other reviewers have had time to have a look as well.

https://github.com/llvm/llvm-project/pull/106244