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

[Florian Weimer]

* Wilco Dijkstra via Libc-alpha:

> Hi Szabolcs,
>
>>> I meant using an actual NOP in the #else case so that existing string functions
>>> won't change. Also note the #defines in the #if and #else need to be indented.
>>
>> is that really useful?
>> 'bti c' is already a nop if it's unsupported.
>
> Well it doesn't seem to behave like a NOP. So to avoid slowing down
> all string functions, bti c must be removed completely, not just from
> A64FX memcpy.  Using a real NOP is fine in all cases as long as
> HAVE_AARCH64_BTI is not defined.

I'm probably confused, but: If BTI is active, many more glibc functions
will have BTI markers.  What makes the string functions special?

Thanks,
Florian