[PATCH v3 5/5] AArch64: Improve A64FX memset

[Wilco Dijkstra]

Hi Naohiro,

> Reverting unroll8 logic to V3 Part 4 fixed 16KB dip [4].
> See the comparison graphs  between the master and V3 Part 5 fixed [4][5][6].

I don't see an improvement from the old unroll8 loop - there is about 2%
benefit on 16KB, but all other sizes become slower. At size 1K it is 50%
slower... I tried some other variations and moving the SUBS to the end
of the loop appears slightly better overall, so I've done that for the v4 patch.

Cheers,
Wilco