[v1] x86_64: Add memcmpeq.S to fix disable-multi-arch build
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Commit Message
The following commit:
commit cf4fd28ea453d1a9cec93939bc88b58ccef5437a
Author: Noah Goldstein <goldstein.w.n@gmail.com>
Date: Tue Oct 26 19:43:18 2021 -0500
Broke --disable-multi-arch build for x86_64 because x86_64/memcmpeq.S
was not defined outside of multiarch and the alias for __memcmpeq in
x86_64/memcmp.S was removed.
This commit fixes that issue by adding x86_64/memcmpeq.S.
make xcheck passes on x86_64 with and without --disable-multi-arch
---
sysdeps/x86_64/memcmpeq.S | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
create mode 100644 sysdeps/x86_64/memcmpeq.S
Comments
On Thu, Oct 28, 2021 at 12:47 PM Noah Goldstein <goldstein.w.n@gmail.com> wrote:
>
> The following commit:
>
> commit cf4fd28ea453d1a9cec93939bc88b58ccef5437a
> Author: Noah Goldstein <goldstein.w.n@gmail.com>
> Date: Tue Oct 26 19:43:18 2021 -0500
>
> Broke --disable-multi-arch build for x86_64 because x86_64/memcmpeq.S
> was not defined outside of multiarch and the alias for __memcmpeq in
> x86_64/memcmp.S was removed.
>
> This commit fixes that issue by adding x86_64/memcmpeq.S.
>
> make xcheck passes on x86_64 with and without --disable-multi-arch
> ---
> sysdeps/x86_64/memcmpeq.S | 23 +++++++++++++++++++++++
> 1 file changed, 23 insertions(+)
> create mode 100644 sysdeps/x86_64/memcmpeq.S
>
> diff --git a/sysdeps/x86_64/memcmpeq.S b/sysdeps/x86_64/memcmpeq.S
> new file mode 100644
> index 0000000000..f3dd1d0085
> --- /dev/null
> +++ b/sysdeps/x86_64/memcmpeq.S
> @@ -0,0 +1,23 @@
> +/* __memcmpeq optimized with SSE2.
> + Copyright (C) 2017-2021 Free Software Foundation, Inc.
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#ifndef memcmp
> +# define memcmp __memcmpeq
> +#endif
Why is this needed? Does the simple
#define memcmp __memcmpeq
work?
> +#define USE_AS_MEMCMPEQ 1
> +#include "multiarch/memcmp-sse2.S"
> --
> 2.25.1
>
On Thu, Oct 28, 2021 at 3:19 PM H.J. Lu <hjl.tools@gmail.com> wrote:
>
> On Thu, Oct 28, 2021 at 12:47 PM Noah Goldstein <goldstein.w.n@gmail.com> wrote:
> >
> > The following commit:
> >
> > commit cf4fd28ea453d1a9cec93939bc88b58ccef5437a
> > Author: Noah Goldstein <goldstein.w.n@gmail.com>
> > Date: Tue Oct 26 19:43:18 2021 -0500
> >
> > Broke --disable-multi-arch build for x86_64 because x86_64/memcmpeq.S
> > was not defined outside of multiarch and the alias for __memcmpeq in
> > x86_64/memcmp.S was removed.
> >
> > This commit fixes that issue by adding x86_64/memcmpeq.S.
> >
> > make xcheck passes on x86_64 with and without --disable-multi-arch
> > ---
> > sysdeps/x86_64/memcmpeq.S | 23 +++++++++++++++++++++++
> > 1 file changed, 23 insertions(+)
> > create mode 100644 sysdeps/x86_64/memcmpeq.S
> >
> > diff --git a/sysdeps/x86_64/memcmpeq.S b/sysdeps/x86_64/memcmpeq.S
> > new file mode 100644
> > index 0000000000..f3dd1d0085
> > --- /dev/null
> > +++ b/sysdeps/x86_64/memcmpeq.S
> > @@ -0,0 +1,23 @@
> > +/* __memcmpeq optimized with SSE2.
> > + Copyright (C) 2017-2021 Free Software Foundation, Inc.
> > + This file is part of the GNU C Library.
> > +
> > + The GNU C Library is free software; you can redistribute it and/or
> > + modify it under the terms of the GNU Lesser General Public
> > + License as published by the Free Software Foundation; either
> > + version 2.1 of the License, or (at your option) any later version.
> > +
> > + The GNU C Library is distributed in the hope that it will be useful,
> > + but WITHOUT ANY WARRANTY; without even the implied warranty of
> > + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> > + Lesser General Public License for more details.
> > +
> > + You should have received a copy of the GNU Lesser General Public
> > + License along with the GNU C Library; if not, see
> > + <https://www.gnu.org/licenses/>. */
> > +
> > +#ifndef memcmp
> > +# define memcmp __memcmpeq
> > +#endif
>
> Why is this needed? Does the simple
>
> #define memcmp __memcmpeq
>
> work?
It's not inherently needed.
Generally just think it's easier to protect these
definitions so it's easier to include the file.
Do you want me to remove it?
>
> > +#define USE_AS_MEMCMPEQ 1
> > +#include "multiarch/memcmp-sse2.S"
> > --
> > 2.25.1
> >
>
>
> --
> H.J.
On Thu, Oct 28, 2021 at 1:22 PM Noah Goldstein <goldstein.w.n@gmail.com> wrote:
>
> On Thu, Oct 28, 2021 at 3:19 PM H.J. Lu <hjl.tools@gmail.com> wrote:
> >
> > On Thu, Oct 28, 2021 at 12:47 PM Noah Goldstein <goldstein.w.n@gmail.com> wrote:
> > >
> > > The following commit:
> > >
> > > commit cf4fd28ea453d1a9cec93939bc88b58ccef5437a
> > > Author: Noah Goldstein <goldstein.w.n@gmail.com>
> > > Date: Tue Oct 26 19:43:18 2021 -0500
> > >
> > > Broke --disable-multi-arch build for x86_64 because x86_64/memcmpeq.S
> > > was not defined outside of multiarch and the alias for __memcmpeq in
> > > x86_64/memcmp.S was removed.
> > >
> > > This commit fixes that issue by adding x86_64/memcmpeq.S.
> > >
> > > make xcheck passes on x86_64 with and without --disable-multi-arch
> > > ---
> > > sysdeps/x86_64/memcmpeq.S | 23 +++++++++++++++++++++++
> > > 1 file changed, 23 insertions(+)
> > > create mode 100644 sysdeps/x86_64/memcmpeq.S
> > >
> > > diff --git a/sysdeps/x86_64/memcmpeq.S b/sysdeps/x86_64/memcmpeq.S
> > > new file mode 100644
> > > index 0000000000..f3dd1d0085
> > > --- /dev/null
> > > +++ b/sysdeps/x86_64/memcmpeq.S
> > > @@ -0,0 +1,23 @@
> > > +/* __memcmpeq optimized with SSE2.
> > > + Copyright (C) 2017-2021 Free Software Foundation, Inc.
> > > + This file is part of the GNU C Library.
> > > +
> > > + The GNU C Library is free software; you can redistribute it and/or
> > > + modify it under the terms of the GNU Lesser General Public
> > > + License as published by the Free Software Foundation; either
> > > + version 2.1 of the License, or (at your option) any later version.
> > > +
> > > + The GNU C Library is distributed in the hope that it will be useful,
> > > + but WITHOUT ANY WARRANTY; without even the implied warranty of
> > > + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> > > + Lesser General Public License for more details.
> > > +
> > > + You should have received a copy of the GNU Lesser General Public
> > > + License along with the GNU C Library; if not, see
> > > + <https://www.gnu.org/licenses/>. */
> > > +
> > > +#ifndef memcmp
> > > +# define memcmp __memcmpeq
> > > +#endif
> >
> > Why is this needed? Does the simple
> >
> > #define memcmp __memcmpeq
> >
> > work?
>
> It's not inherently needed.
>
> Generally just think it's easier to protect these
> definitions so it's easier to include the file.
>
> Do you want me to remove it?
Yes, please remove it. OK with that change.
Thanks.
> >
> > > +#define USE_AS_MEMCMPEQ 1
> > > +#include "multiarch/memcmp-sse2.S"
> > > --
> > > 2.25.1
> > >
> >
> >
> > --
> > H.J.
On Thu, Oct 28, 2021 at 3:40 PM H.J. Lu <hjl.tools@gmail.com> wrote:
>
> On Thu, Oct 28, 2021 at 1:22 PM Noah Goldstein <goldstein.w.n@gmail.com> wrote:
> >
> > On Thu, Oct 28, 2021 at 3:19 PM H.J. Lu <hjl.tools@gmail.com> wrote:
> > >
> > > On Thu, Oct 28, 2021 at 12:47 PM Noah Goldstein <goldstein.w.n@gmail.com> wrote:
> > > >
> > > > The following commit:
> > > >
> > > > commit cf4fd28ea453d1a9cec93939bc88b58ccef5437a
> > > > Author: Noah Goldstein <goldstein.w.n@gmail.com>
> > > > Date: Tue Oct 26 19:43:18 2021 -0500
> > > >
> > > > Broke --disable-multi-arch build for x86_64 because x86_64/memcmpeq.S
> > > > was not defined outside of multiarch and the alias for __memcmpeq in
> > > > x86_64/memcmp.S was removed.
> > > >
> > > > This commit fixes that issue by adding x86_64/memcmpeq.S.
> > > >
> > > > make xcheck passes on x86_64 with and without --disable-multi-arch
> > > > ---
> > > > sysdeps/x86_64/memcmpeq.S | 23 +++++++++++++++++++++++
> > > > 1 file changed, 23 insertions(+)
> > > > create mode 100644 sysdeps/x86_64/memcmpeq.S
> > > >
> > > > diff --git a/sysdeps/x86_64/memcmpeq.S b/sysdeps/x86_64/memcmpeq.S
> > > > new file mode 100644
> > > > index 0000000000..f3dd1d0085
> > > > --- /dev/null
> > > > +++ b/sysdeps/x86_64/memcmpeq.S
> > > > @@ -0,0 +1,23 @@
> > > > +/* __memcmpeq optimized with SSE2.
> > > > + Copyright (C) 2017-2021 Free Software Foundation, Inc.
> > > > + This file is part of the GNU C Library.
> > > > +
> > > > + The GNU C Library is free software; you can redistribute it and/or
> > > > + modify it under the terms of the GNU Lesser General Public
> > > > + License as published by the Free Software Foundation; either
> > > > + version 2.1 of the License, or (at your option) any later version.
> > > > +
> > > > + The GNU C Library is distributed in the hope that it will be useful,
> > > > + but WITHOUT ANY WARRANTY; without even the implied warranty of
> > > > + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> > > > + Lesser General Public License for more details.
> > > > +
> > > > + You should have received a copy of the GNU Lesser General Public
> > > > + License along with the GNU C Library; if not, see
> > > > + <https://www.gnu.org/licenses/>. */
> > > > +
> > > > +#ifndef memcmp
> > > > +# define memcmp __memcmpeq
> > > > +#endif
> > >
> > > Why is this needed? Does the simple
> > >
> > > #define memcmp __memcmpeq
> > >
> > > work?
> >
> > It's not inherently needed.
> >
> > Generally just think it's easier to protect these
> > definitions so it's easier to include the file.
> >
> > Do you want me to remove it?
>
> Yes, please remove it. OK with that change.
>
> Thanks.
Got it. Fixed in v2.
>
> > >
> > > > +#define USE_AS_MEMCMPEQ 1
> > > > +#include "multiarch/memcmp-sse2.S"
> > > > --
> > > > 2.25.1
> > > >
> > >
> > >
> > > --
> > > H.J.
>
>
>
> --
> H.J.
new file mode 100644
@@ -0,0 +1,23 @@
+/* __memcmpeq optimized with SSE2.
+ Copyright (C) 2017-2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#ifndef memcmp
+# define memcmp __memcmpeq
+#endif
+#define USE_AS_MEMCMPEQ 1
+#include "multiarch/memcmp-sse2.S"