From: Noah Goldstein <goldstein.w.n@gmail.com>
To: "H.J. Lu" <hjl.tools@gmail.com>
Cc: GNU C Library <libc-alpha@sourceware.org>,
"Carlos O'Donell" <carlos@systemhalted.org>
Subject: Re: [PATCH v2] x86: Fix missing __wmemcmp def for disable-multiarch build
Date: Tue, 19 Apr 2022 20:19:40 -0500 [thread overview]
Message-ID: <CAFUsyf+09WpE1BJdGc3stMNuYMy3Q4p7G3CXOCo+Nck9CqurRg@mail.gmail.com> (raw)
In-Reply-To: <CAMe9rOptUX1Ay9hn-y0addiext4ZKH8iYagZcXiHhRfkxiQ9tA@mail.gmail.com>
On Tue, Apr 19, 2022 at 6:56 PM H.J. Lu <hjl.tools@gmail.com> wrote:
>
> On Tue, Apr 19, 2022 at 4:53 PM Noah Goldstein <goldstein.w.n@gmail.com> wrote:
> >
> > commit 8804157ad9da39631703b92315460808eac86b0c
> > Author: Noah Goldstein <goldstein.w.n@gmail.com>
> > Date: Fri Apr 15 12:27:59 2022 -0500
> >
> > x86: Optimize memcmp SSE2 in memcmp.S
> >
> > Only defined wmemcmp and missed __wmemcmp. This commit fixes that by
> > defining __wmemcmp and setting wmemcmp as a weak alias to __wmemcmp.
> >
> > Both multiarch and disable-multiarch builds succeed and full xchecks
> > pass.
> > ---
> > sysdeps/x86_64/multiarch/wmemcmp-sse2.S | 8 ++------
> > sysdeps/x86_64/wmemcmp.S | 6 ++++--
> > 2 files changed, 6 insertions(+), 8 deletions(-)
> >
> > diff --git a/sysdeps/x86_64/multiarch/wmemcmp-sse2.S b/sysdeps/x86_64/multiarch/wmemcmp-sse2.S
> > index 57be1c446e..f09192ed77 100644
> > --- a/sysdeps/x86_64/multiarch/wmemcmp-sse2.S
> > +++ b/sysdeps/x86_64/multiarch/wmemcmp-sse2.S
> > @@ -16,10 +16,6 @@
> > License along with the GNU C Library; if not, see
> > <https://www.gnu.org/licenses/>. */
> >
> > -#if IS_IN (libc)
> > -# define MEMCMP __wmemcmp_sse2
> > -#else
> > -# define MEMCMP wmemcmp
> > -#endif
> > #define USE_AS_WMEMCMP 1
> > -#include "memcmp-sse2.S"
> > +#define MEMCMP __wmemcmp_sse2
> > +#include "../memcmp.S"
> > diff --git a/sysdeps/x86_64/wmemcmp.S b/sysdeps/x86_64/wmemcmp.S
> > index 032f389158..8bd3cf80db 100644
> > --- a/sysdeps/x86_64/wmemcmp.S
> > +++ b/sysdeps/x86_64/wmemcmp.S
> > @@ -16,6 +16,8 @@
> > License along with the GNU C Library; if not, see
> > <https://www.gnu.org/licenses/>. */
> >
> > -#define MEMCMP wmemcmp
> > +#define MEMCMP __wmemcmp
> > #define USE_AS_WMEMCMP 1
> > -#include "multiarch/memcmp-sse2.S"
> > +#include "memcmp.S"
> > +
> > +weak_alias (__wmemcmp, wmemcmp)
> > --
> > 2.25.1
> >
>
> LGTM.
>
> Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
>
> Thanks.
Thanks pushed.
>
> --
> H.J.
next prev parent reply other threads:[~2022-04-20 1:19 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-19 22:55 [PATCH v1] " Noah Goldstein
2022-04-19 23:36 ` H.J. Lu
2022-04-19 23:39 ` Noah Goldstein
2022-04-19 23:42 ` H.J. Lu
2022-04-19 23:52 ` Noah Goldstein
2022-04-19 23:52 ` [PATCH v2] " Noah Goldstein
2022-04-19 23:56 ` H.J. Lu
2022-04-20 1:19 ` Noah Goldstein [this message]
2022-05-12 20:04 ` Sunil Pandey
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