[llvm] [AArch64] Set MaxInterleaving to 4 for Neoverse V2 (PR #100385)

[Florian Hahn via llvm-commits]

fhahn wrote:

One issue with interleaving is that epilogue vecotrizaiton only considers VF, but not VF x UF. There are a number of cases where epilogue vectorization would be beneficial on AArch64 when the VF < 16 but UF > 1. @juliannagele is currently looking into adjusting the cost model for that.

https://github.com/llvm/llvm-project/pull/100385