[llvm] [Transform][LoadStoreVectorizer] allow redundant in Chain (PR #163019)

[Drew Kersnar via llvm-commits]

dakersnar wrote:

Heads up, I'm working on a change that overlaps with your change: https://github.com/llvm/llvm-project/pull/159388. Conceptually I don't see an issue with them both coexisting. One of us will have to resolve some conflicts but it shouldn't be a big deal.

https://github.com/llvm/llvm-project/pull/163019