[PATCH] AArch64: Update A64FX memset not to degrade at 16KB

[Florian Weimer]

* Joseph Myers:

> On Mon, 6 Sep 2021, Florian Weimer via Libc-alpha wrote:
>
>> Unfortunately, we do not have much control over the mailing list
>> configuration (to make “git am” work) or the commit hooks (to prevent
>> people from pushing such changes).  Sorry about that.
>
> We do have sufficient control over the git hooks.  You can set 
> commit-extra-checker (in refs/meta/config:project.config) to point to a 
> script that applies such checks to commits.  See 
> /git/gcc.git/hooks-bin/commit_checker for example; that includes code:
>
>     # Reject commits applied via "git am" with list email address as
>     # the author.
>     if author_email in ('gcc-patches@gcc.gnu.org', 'libstdc++@gcc.gnu.org',
>                         'fortran@gcc.gnu.org'):
>         error('When applying a patch from a mailing list, make sure '
>               'to use the original name and email address of the patch '
>               'author, not the list email address with "via Gcc-patches".')
>
> These checks are only applied to commits new to the repository, not 
> commits new to a particular branch but already present in the repository, 
> so applying stricter checks to new commits on particular branches can be 
> trickier (see <https://github.com/AdaCore/git-hooks/issues/20>), but for 
> this particular issue a branch-independent check should suffice.

I've tried to implement this now.  commit-extra-checker now points to a
trimmed-down version of the GCC script.

Thanks,
Florian