[llvm] [LV][VPlan] Add initial support for CSA vectorization (PR #121222)

[Graham Hunter via llvm-commits]

huntergr-arm wrote:

Hi @Mel-Chen, I think there was a comment about you taking over the work, though I'm unable to find it now.

Is there a rough timeline for this work? Arm would like to see the feature land for the next LLVM release if possible, so we would be willing to pick up the work if you don't have time before then. If you're going to start on it soon, though, we'll be happy to help review it instead.

https://github.com/llvm/llvm-project/pull/121222