[llvm] [LV] Add support for widening loads/stores to a VF multiple (PR #217670)

[Paul Walker via llvm-commits]

paulwalker-arm wrote:

I asked @MacDue to experiment with alternative solutions and compare them to the existing LV approach.  Based on the results I'm now happy with the LV approach, which comes into its own when extended to cover tail-folded loops. Thanks Ben.

https://github.com/llvm/llvm-project/pull/217670