[llvm] [AArch64] Set the cache line size to 64 for the V2 and V3. (PR #148213)

[Sjoerd Meijer via llvm-commits]

sjoerdmeijer wrote:

@kasuga-fj : thanks for the report, shall I look at that miscompilation since you're probably busy with the delinearization?

@fhahn : yeah that makes sense. I am going to do some more testing. I might put up a little patch introducing an internal option to ignore the cost-model, I can see how this can be useful for testing and experimentation. 

https://github.com/llvm/llvm-project/pull/148213