[llvm] [LV] Bundle (partial) reductions with a mul of a constant (PR #162503)

[Sam Tebbs via llvm-commits]

SamTebbs33 wrote:

Thanks for the review @fhahn , sorry I didn't address your review before the auto-squash did it's thing. I'll submit a follow-up to address your comments.

https://github.com/llvm/llvm-project/pull/162503