[PATCH 0/5] Added optimized memcpy/memmove/memset for A64FX

[naohirot@fujitsu.com]

Hi Wilco-san,

This mail is a continuation of BTI macro.

I believe that I've answered all of your comments so far.
Please let me know if I missed something.
If there is no further comments to the first version of this patch,
I'd like to proceed with the preparation of the second version after
the consecutive National holidays, Apr. 29th - May. 5th, in Japan.

> From: Wilco Dijkstra <Wilco.Dijkstra@arm.com>

> > So if distinct degradation happens only on A64FX, I'd like to add
> > another ENTRY macro in sysdeps/aarch64/sysdep.h such as:
> 
> I think the best option for now is to change BTI_C into NOP if AARCH64_HAVE_BTI
> is not set. This avoids creating alignment issues in existing code (which is written
> to assume the hint is present) and works for all string functions.

I updated sysdeps/aarch64/sysdep.h following your advice [1].
Then I reverted the entries of memcpy/memmove [2] and memset [3].

[1] https://github.com/NaohiroTamura/glibc/commit/c582917071e76cfed84fafb0c82cb70339294386
[2] https://github.com/NaohiroTamura/glibc/commit/f4627d5a0faa8d2bd9102964a3e31936248fa9ca
[3] https://github.com/NaohiroTamura/glibc/commit/da48f62bab67d875cb712a886ba074073857d5c3

Thanks.
Naohiro