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

[Ramkumar Ramachandra via llvm-commits]

https://github.com/artagnon commented:

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

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