[llvm] [AArch64] Change IssueWidth to 6 in AArch64SchedNeoverseV2.td (PR #142565)

[Sjoerd Meijer via llvm-commits]

https://github.com/sjoerdmeijer commented:

I suspect we are looking at very similar things. I have tested the interaction between this and #140897 that I plan to commit end of this week. That all looks fine for my motivating examples and app, so that is a good start.
I would like to do some more extensive testing now, and need a bit more time, maybe a day or so.

In the meantime, I've added one nit. 


https://github.com/llvm/llvm-project/pull/142565