RFC: Backport architecture specific improvements to release branches

[Adhemerval Zanella]

On 29/03/2022 16:19, Noah Goldstein via Libc-alpha wrote:
> On Tue, Mar 29, 2022 at 2:02 PM H.J. Lu <hjl.tools@gmail.com> wrote:
>>
>> On Tue, Mar 29, 2022 at 10:36 AM Noah Goldstein <goldstein.w.n@gmail.com> wrote:
>>>
>>> On Tue, Mar 29, 2022 at 12:29 PM H.J. Lu via Libc-alpha
>>> <libc-alpha@sourceware.org> wrote:
>>>>
>>>> Hi,
>>>>
>>>> We'd like to backport architecture specific improvements to release branches,
>>>> similar to backports under sysdeps/x86_64/multiarch on users/intel/x86/2.34
>>>> branch:
>>>>
>>>> https://gitlab.com/x86-glibc/glibc/-/commits/users/intel/x86/2.34
>>>
>>> Given that the compiler does not emit `bzero` and we dropped the `__memsetzero`
>>> optimization maybe best w.o:
>>> https://gitlab.com/x86-glibc/glibc/-/commit/76e17e47789ef4faf1367b2e48c19763559c79a0
>>> for the sake of code size.
>>
>> I like to make the release branch as close to the master branch as possible
>> to make backporting easier.
>>
> 
> Should we drop the optimized bzero on master? Or keep both?

As a side note, I have removed bzero optimization on all targets except x86.
It is on my plan to clean x86 as well.