[llvm] [LV] Enable considering higher VFs when data extend ops are present i… (PR #137593)

[David Green via llvm-commits]

davemgreen wrote:

It sounds like you are looking for shouldMaximizeVectorBandwidth? It is currently a target-dependant decision. @huntergr-arm was working on enabling it for SVE but it can lead to issues with cost-modelling and perforance, which I believe were being worked through.

https://github.com/llvm/llvm-project/pull/137593