public inbox for libc-stable@sourceware.org
 help / color / mirror / Atom feed
* Re: [PATCH v8 3/4] x86_64: roundeven with sse4.1 support
       [not found] ` <20210623222846.2162301-4-hjl.tools@gmail.com>
@ 2022-04-28  0:11   ` Sunil Pandey
  2022-09-11 20:08     ` Sunil Pandey
  0 siblings, 1 reply; 8+ messages in thread
From: Sunil Pandey @ 2022-04-28  0:11 UTC (permalink / raw)
  To: H.J. Lu, libc-stable; +Cc: GNU C Library, Shen-Ta Hsieh

On Wed, Jun 23, 2021 at 3:32 PM H.J. Lu via Libc-alpha
<libc-alpha@sourceware.org> wrote:
>
> From: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
>
> This patch adds support for the sse4.1 hardware floating point
> roundeven.
>
> Here is some benchmark results on my systems:
>
> =AMD Ryzen 9 3900X 12-Core Processor=
>
> * benchmark result before this commit
> |            |    roundeven |   roundevenf |
> |------------|--------------|--------------|
> | duration   |  3.75587e+09 |  3.75114e+09 |
> | iterations |  3.93053e+08 |  4.35402e+08 |
> | max        | 52.592       | 58.71        |
> | min        |  7.98        |  7.22        |
> | mean       |  9.55563     |  8.61535     |
>
> * benchmark result after this commit
> |            |     roundeven |   roundevenf |
> |------------|---------------|--------------|
> | duration   |   3.73815e+09 |  3.73738e+09 |
> | iterations |   5.82692e+08 |  5.91498e+08 |
> | max        |  56.468       | 51.642       |
> | min        |   6.27        |  6.156       |
> | mean       |   6.41532     |  6.3185      |
>
> =Intel(R) Pentium(R) CPU D1508 @ 2.20GHz=
>
> * benchmark result before this commit
> |            |    roundeven |   roundevenf |
> |------------|--------------|--------------|
> | duration   |  2.18208e+09 |  2.18258e+09 |
> | iterations |  2.39932e+08 |  2.46924e+08 |
> | max        | 96.378       | 98.035       |
> | min        |  6.776       |  5.94        |
> | mean       |  9.09456     |  8.83907     |
>
> * benchmark result after this commit
> |            |    roundeven |   roundevenf |
> |------------|--------------|--------------|
> | duration   |  2.17415e+09 |  2.17005e+09 |
> | iterations |  3.56193e+08 |  4.09824e+08 |
> | max        | 51.693       | 97.192       |
> | min        |  5.926       |  5.093       |
> | mean       |  6.10385     |  5.29507     |
>
> Signed-off-by: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
> Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
> ---
>  sysdeps/x86_64/fpu/multiarch/Makefile         |  5 +--
>  sysdeps/x86_64/fpu/multiarch/s_roundeven-c.c  |  2 ++
>  .../x86_64/fpu/multiarch/s_roundeven-sse4_1.S | 24 ++++++++++++++
>  sysdeps/x86_64/fpu/multiarch/s_roundeven.c    | 31 +++++++++++++++++++
>  sysdeps/x86_64/fpu/multiarch/s_roundevenf-c.c |  3 ++
>  .../fpu/multiarch/s_roundevenf-sse4_1.S       | 24 ++++++++++++++
>  sysdeps/x86_64/fpu/multiarch/s_roundevenf.c   | 31 +++++++++++++++++++
>  7 files changed, 118 insertions(+), 2 deletions(-)
>  create mode 100644 sysdeps/x86_64/fpu/multiarch/s_roundeven-c.c
>  create mode 100644 sysdeps/x86_64/fpu/multiarch/s_roundeven-sse4_1.S
>  create mode 100644 sysdeps/x86_64/fpu/multiarch/s_roundeven.c
>  create mode 100644 sysdeps/x86_64/fpu/multiarch/s_roundevenf-c.c
>  create mode 100644 sysdeps/x86_64/fpu/multiarch/s_roundevenf-sse4_1.S
>  create mode 100644 sysdeps/x86_64/fpu/multiarch/s_roundevenf.c
>
> diff --git a/sysdeps/x86_64/fpu/multiarch/Makefile b/sysdeps/x86_64/fpu/multiarch/Makefile
> index 57892c56bb..d425ffd6d3 100644
> --- a/sysdeps/x86_64/fpu/multiarch/Makefile
> +++ b/sysdeps/x86_64/fpu/multiarch/Makefile
> @@ -1,11 +1,12 @@
>  ifeq ($(subdir),math)
>  libm-sysdep_routines += s_floor-c s_ceil-c s_floorf-c s_ceilf-c \
>                         s_rint-c s_rintf-c s_nearbyint-c s_nearbyintf-c \
> -                       s_trunc-c s_truncf-c
> +                       s_roundeven-c s_roundevenf-c s_trunc-c s_truncf-c
>
>  libm-sysdep_routines += s_ceil-sse4_1 s_ceilf-sse4_1 s_floor-sse4_1 \
>                         s_floorf-sse4_1 s_nearbyint-sse4_1 \
> -                       s_nearbyintf-sse4_1 s_rint-sse4_1 s_rintf-sse4_1 \
> +                       s_nearbyintf-sse4_1 s_roundeven-sse4_1 \
> +                       s_roundevenf-sse4_1 s_rint-sse4_1 s_rintf-sse4_1 \
>                         s_trunc-sse4_1 s_truncf-sse4_1
>
>  libm-sysdep_routines += e_exp-fma e_log-fma e_pow-fma s_atan-fma \
> diff --git a/sysdeps/x86_64/fpu/multiarch/s_roundeven-c.c b/sysdeps/x86_64/fpu/multiarch/s_roundeven-c.c
> new file mode 100644
> index 0000000000..c7be43cb22
> --- /dev/null
> +++ b/sysdeps/x86_64/fpu/multiarch/s_roundeven-c.c
> @@ -0,0 +1,2 @@
> +#define __roundeven __roundeven_c
> +#include <sysdeps/ieee754/dbl-64/s_roundeven.c>
> diff --git a/sysdeps/x86_64/fpu/multiarch/s_roundeven-sse4_1.S b/sysdeps/x86_64/fpu/multiarch/s_roundeven-sse4_1.S
> new file mode 100644
> index 0000000000..6ae8f6b1d3
> --- /dev/null
> +++ b/sysdeps/x86_64/fpu/multiarch/s_roundeven-sse4_1.S
> @@ -0,0 +1,24 @@
> +/* Copyright (C) 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/>.  */
> +
> +#include <sysdep.h>
> +
> +       .section .text.sse4.1,"ax",@progbits
> +ENTRY(__roundeven_sse41)
> +       roundsd $8, %xmm0, %xmm0
> +       ret
> +END(__roundeven_sse41)
> diff --git a/sysdeps/x86_64/fpu/multiarch/s_roundeven.c b/sysdeps/x86_64/fpu/multiarch/s_roundeven.c
> new file mode 100644
> index 0000000000..d92eda652a
> --- /dev/null
> +++ b/sysdeps/x86_64/fpu/multiarch/s_roundeven.c
> @@ -0,0 +1,31 @@
> +/* Multiple versions of __roundeven.
> +   Copyright (C) 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/>.  */
> +
> +#include <libm-alias-double.h>
> +
> +#define roundeven __redirect_roundeven
> +#define __roundeven __redirect___roundeven
> +#include <math.h>
> +#undef roundeven
> +#undef __roundeven
> +
> +#define SYMBOL_NAME roundeven
> +#include "ifunc-sse4_1.h"
> +
> +libc_ifunc_redirected (__redirect_roundeven, __roundeven, IFUNC_SELECTOR ());
> +libm_alias_double (__roundeven, roundeven)
> diff --git a/sysdeps/x86_64/fpu/multiarch/s_roundevenf-c.c b/sysdeps/x86_64/fpu/multiarch/s_roundevenf-c.c
> new file mode 100644
> index 0000000000..72a6e7d1fb
> --- /dev/null
> +++ b/sysdeps/x86_64/fpu/multiarch/s_roundevenf-c.c
> @@ -0,0 +1,3 @@
> +#undef __roundevenf
> +#define __roundevenf __roundevenf_c
> +#include <sysdeps/ieee754/flt-32/s_roundevenf.c>
> diff --git a/sysdeps/x86_64/fpu/multiarch/s_roundevenf-sse4_1.S b/sysdeps/x86_64/fpu/multiarch/s_roundevenf-sse4_1.S
> new file mode 100644
> index 0000000000..a76e10807e
> --- /dev/null
> +++ b/sysdeps/x86_64/fpu/multiarch/s_roundevenf-sse4_1.S
> @@ -0,0 +1,24 @@
> +/* Copyright (C) 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/>.  */
> +
> +#include <sysdep.h>
> +
> +       .section .text.sse4.1,"ax",@progbits
> +ENTRY(__roundevenf_sse41)
> +       roundss $8, %xmm0, %xmm0
> +       ret
> +END(__roundevenf_sse41)
> diff --git a/sysdeps/x86_64/fpu/multiarch/s_roundevenf.c b/sysdeps/x86_64/fpu/multiarch/s_roundevenf.c
> new file mode 100644
> index 0000000000..2ee196e68f
> --- /dev/null
> +++ b/sysdeps/x86_64/fpu/multiarch/s_roundevenf.c
> @@ -0,0 +1,31 @@
> +/* Multiple versions of __roundevenf.
> +   Copyright (C) 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/>.  */
> +
> +#include <libm-alias-float.h>
> +
> +#define roundevenf __redirect_roundevenf
> +#define __roundevenf __redirect___roundevenf
> +#include <math.h>
> +#undef roundevenf
> +#undef __roundevenf
> +
> +#define SYMBOL_NAME roundevenf
> +#include "ifunc-sse4_1.h"
> +
> +libc_ifunc_redirected (__redirect_roundevenf, __roundevenf, IFUNC_SELECTOR ());
> +libm_alias_float (__roundeven, roundeven)
> --
> 2.31.1
>

I would like to backport this patch to release branches.
Any comments or objections?

--Sunil

^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [PATCH v8 1/4] math: redirect roundeven function
       [not found] ` <20210623222846.2162301-2-hjl.tools@gmail.com>
@ 2022-09-11 19:56   ` Sunil Pandey
  2022-09-14  1:25     ` Noah Goldstein
  0 siblings, 1 reply; 8+ messages in thread
From: Sunil Pandey @ 2022-09-11 19:56 UTC (permalink / raw)
  To: H.J. Lu, Libc-stable Mailing List, Florian Weimer
  Cc: GNU C Library, Shen-Ta Hsieh

On Wed, Jun 23, 2021 at 3:32 PM H.J. Lu via Libc-alpha
<libc-alpha@sourceware.org> wrote:
>
> From: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
>
> This patch redirect roundeven function for futhermore changes.
>
> Signed-off-by: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
> Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
> ---
>  include/math.h                             | 2 +-
>  sysdeps/ieee754/dbl-64/s_roundeven.c       | 4 +++-
>  sysdeps/ieee754/float128/s_roundevenf128.c | 1 +
>  sysdeps/ieee754/flt-32/s_roundevenf.c      | 3 +++
>  sysdeps/ieee754/ldbl-128/s_roundevenl.c    | 1 +
>  sysdeps/ieee754/ldbl-96/s_roundevenl.c     | 1 +
>  6 files changed, 10 insertions(+), 2 deletions(-)
>
> diff --git a/include/math.h b/include/math.h
> index e1c2a4eb64..b4772d3d3b 100644
> --- a/include/math.h
> +++ b/include/math.h
> @@ -38,7 +38,6 @@ libm_hidden_proto (__issignaling)
>  libm_hidden_proto (__issignalingf)
>  libm_hidden_proto (__exp)
>  libm_hidden_proto (__expf)
> -libm_hidden_proto (__roundeven)
>
>  #  if !defined __NO_LONG_DOUBLE_MATH \
>        && __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 0
> @@ -159,6 +158,7 @@ fabsf128 (_Float128 x)
>  MATH_REDIRECT (sqrt, "__ieee754_", MATH_REDIRECT_UNARY_ARGS)
>  MATH_REDIRECT (ceil, "__", MATH_REDIRECT_UNARY_ARGS)
>  MATH_REDIRECT (floor, "__", MATH_REDIRECT_UNARY_ARGS)
> +MATH_REDIRECT (roundeven, "__", MATH_REDIRECT_UNARY_ARGS)
>  MATH_REDIRECT (rint, "__", MATH_REDIRECT_UNARY_ARGS)
>  MATH_REDIRECT (trunc, "__", MATH_REDIRECT_UNARY_ARGS)
>  MATH_REDIRECT (round, "__", MATH_REDIRECT_UNARY_ARGS)
> diff --git a/sysdeps/ieee754/dbl-64/s_roundeven.c b/sysdeps/ieee754/dbl-64/s_roundeven.c
> index 943b2c634c..5deff3bb8a 100644
> --- a/sysdeps/ieee754/dbl-64/s_roundeven.c
> +++ b/sysdeps/ieee754/dbl-64/s_roundeven.c
> @@ -16,6 +16,7 @@
>     License along with the GNU C Library; if not, see
>     <https://www.gnu.org/licenses/>.  */
>
> +#define NO_MATH_REDIRECT
>  #include <math.h>
>  #include <math_private.h>
>  #include <libm-alias-double.h>
> @@ -66,5 +67,6 @@ __roundeven (double x)
>    INSERT_WORDS64 (x, ix);
>    return x;
>  }
> -hidden_def (__roundeven)
> +#ifndef __roundeven
>  libm_alias_double (__roundeven, roundeven)
> +#endif
> diff --git a/sysdeps/ieee754/float128/s_roundevenf128.c b/sysdeps/ieee754/float128/s_roundevenf128.c
> index 5a9b3f395f..e0faf727f6 100644
> --- a/sysdeps/ieee754/float128/s_roundevenf128.c
> +++ b/sysdeps/ieee754/float128/s_roundevenf128.c
> @@ -1,2 +1,3 @@
> +#define NO_MATH_REDIRECT
>  #include <float128_private.h>
>  #include "../ldbl-128/s_roundevenl.c"
> diff --git a/sysdeps/ieee754/flt-32/s_roundevenf.c b/sysdeps/ieee754/flt-32/s_roundevenf.c
> index ae54365bbe..2cc0d7b001 100644
> --- a/sysdeps/ieee754/flt-32/s_roundevenf.c
> +++ b/sysdeps/ieee754/flt-32/s_roundevenf.c
> @@ -17,6 +17,7 @@
>     License along with the GNU C Library; if not, see
>     <https://www.gnu.org/licenses/>.  */
>
> +#define NO_MATH_REDIRECT
>  #include <math.h>
>  #include <math_private.h>
>  #include <libm-alias-float.h>
> @@ -67,4 +68,6 @@ __roundevenf (float x)
>    SET_FLOAT_WORD (x, ix);
>    return x;
>  }
> +#ifndef __roundevenf
>  libm_alias_float (__roundeven, roundeven)
> +#endif
> diff --git a/sysdeps/ieee754/ldbl-128/s_roundevenl.c b/sysdeps/ieee754/ldbl-128/s_roundevenl.c
> index 02765be0e0..7c9c11fad2 100644
> --- a/sysdeps/ieee754/ldbl-128/s_roundevenl.c
> +++ b/sysdeps/ieee754/ldbl-128/s_roundevenl.c
> @@ -17,6 +17,7 @@
>     License along with the GNU C Library; if not, see
>     <https://www.gnu.org/licenses/>.  */
>
> +#define NO_MATH_REDIRECT
>  #include <math.h>
>  #include <math_private.h>
>  #include <libm-alias-ldouble.h>
> diff --git a/sysdeps/ieee754/ldbl-96/s_roundevenl.c b/sysdeps/ieee754/ldbl-96/s_roundevenl.c
> index 8340116ed8..f826829c31 100644
> --- a/sysdeps/ieee754/ldbl-96/s_roundevenl.c
> +++ b/sysdeps/ieee754/ldbl-96/s_roundevenl.c
> @@ -17,6 +17,7 @@
>     License along with the GNU C Library; if not, see
>     <https://www.gnu.org/licenses/>.  */
>
> +#define NO_MATH_REDIRECT
>  #include <math.h>
>  #include <math_private.h>
>  #include <libm-alias-ldouble.h>
> --
> 2.31.1
>

I would like to backport this patch to release branch 2.33.

Any comments/suggestions or objections on this.

commit 447954a206837b5f153869cfeeeab44631c3fac9
Author: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
Date:   Mon May 24 09:43:10 2021 +0800

    math: redirect roundeven function

    This patch redirect roundeven function for futhermore changes.

    Signed-off-by: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
    Reviewed-by: H.J. Lu <hjl.tools@gmail.com>

^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [PATCH v8 3/4] x86_64: roundeven with sse4.1 support
  2022-04-28  0:11   ` [PATCH v8 3/4] x86_64: roundeven with sse4.1 support Sunil Pandey
@ 2022-09-11 20:08     ` Sunil Pandey
  2022-09-14  1:25       ` Noah Goldstein
  0 siblings, 1 reply; 8+ messages in thread
From: Sunil Pandey @ 2022-09-11 20:08 UTC (permalink / raw)
  To: H.J. Lu, Libc-stable Mailing List, Florian Weimer
  Cc: GNU C Library, Shen-Ta Hsieh

On Wed, Apr 27, 2022 at 5:11 PM Sunil Pandey <skpgkp2@gmail.com> wrote:
>
> On Wed, Jun 23, 2021 at 3:32 PM H.J. Lu via Libc-alpha
> <libc-alpha@sourceware.org> wrote:
> >
> > From: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
> >
> > This patch adds support for the sse4.1 hardware floating point
> > roundeven.
> >
> > Here is some benchmark results on my systems:
> >
> > =AMD Ryzen 9 3900X 12-Core Processor=
> >
> > * benchmark result before this commit
> > |            |    roundeven |   roundevenf |
> > |------------|--------------|--------------|
> > | duration   |  3.75587e+09 |  3.75114e+09 |
> > | iterations |  3.93053e+08 |  4.35402e+08 |
> > | max        | 52.592       | 58.71        |
> > | min        |  7.98        |  7.22        |
> > | mean       |  9.55563     |  8.61535     |
> >
> > * benchmark result after this commit
> > |            |     roundeven |   roundevenf |
> > |------------|---------------|--------------|
> > | duration   |   3.73815e+09 |  3.73738e+09 |
> > | iterations |   5.82692e+08 |  5.91498e+08 |
> > | max        |  56.468       | 51.642       |
> > | min        |   6.27        |  6.156       |
> > | mean       |   6.41532     |  6.3185      |
> >
> > =Intel(R) Pentium(R) CPU D1508 @ 2.20GHz=
> >
> > * benchmark result before this commit
> > |            |    roundeven |   roundevenf |
> > |------------|--------------|--------------|
> > | duration   |  2.18208e+09 |  2.18258e+09 |
> > | iterations |  2.39932e+08 |  2.46924e+08 |
> > | max        | 96.378       | 98.035       |
> > | min        |  6.776       |  5.94        |
> > | mean       |  9.09456     |  8.83907     |
> >
> > * benchmark result after this commit
> > |            |    roundeven |   roundevenf |
> > |------------|--------------|--------------|
> > | duration   |  2.17415e+09 |  2.17005e+09 |
> > | iterations |  3.56193e+08 |  4.09824e+08 |
> > | max        | 51.693       | 97.192       |
> > | min        |  5.926       |  5.093       |
> > | mean       |  6.10385     |  5.29507     |
> >
> > Signed-off-by: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
> > Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
> > ---
> >  sysdeps/x86_64/fpu/multiarch/Makefile         |  5 +--
> >  sysdeps/x86_64/fpu/multiarch/s_roundeven-c.c  |  2 ++
> >  .../x86_64/fpu/multiarch/s_roundeven-sse4_1.S | 24 ++++++++++++++
> >  sysdeps/x86_64/fpu/multiarch/s_roundeven.c    | 31 +++++++++++++++++++
> >  sysdeps/x86_64/fpu/multiarch/s_roundevenf-c.c |  3 ++
> >  .../fpu/multiarch/s_roundevenf-sse4_1.S       | 24 ++++++++++++++
> >  sysdeps/x86_64/fpu/multiarch/s_roundevenf.c   | 31 +++++++++++++++++++
> >  7 files changed, 118 insertions(+), 2 deletions(-)
> >  create mode 100644 sysdeps/x86_64/fpu/multiarch/s_roundeven-c.c
> >  create mode 100644 sysdeps/x86_64/fpu/multiarch/s_roundeven-sse4_1.S
> >  create mode 100644 sysdeps/x86_64/fpu/multiarch/s_roundeven.c
> >  create mode 100644 sysdeps/x86_64/fpu/multiarch/s_roundevenf-c.c
> >  create mode 100644 sysdeps/x86_64/fpu/multiarch/s_roundevenf-sse4_1.S
> >  create mode 100644 sysdeps/x86_64/fpu/multiarch/s_roundevenf.c
> >
> > diff --git a/sysdeps/x86_64/fpu/multiarch/Makefile b/sysdeps/x86_64/fpu/multiarch/Makefile
> > index 57892c56bb..d425ffd6d3 100644
> > --- a/sysdeps/x86_64/fpu/multiarch/Makefile
> > +++ b/sysdeps/x86_64/fpu/multiarch/Makefile
> > @@ -1,11 +1,12 @@
> >  ifeq ($(subdir),math)
> >  libm-sysdep_routines += s_floor-c s_ceil-c s_floorf-c s_ceilf-c \
> >                         s_rint-c s_rintf-c s_nearbyint-c s_nearbyintf-c \
> > -                       s_trunc-c s_truncf-c
> > +                       s_roundeven-c s_roundevenf-c s_trunc-c s_truncf-c
> >
> >  libm-sysdep_routines += s_ceil-sse4_1 s_ceilf-sse4_1 s_floor-sse4_1 \
> >                         s_floorf-sse4_1 s_nearbyint-sse4_1 \
> > -                       s_nearbyintf-sse4_1 s_rint-sse4_1 s_rintf-sse4_1 \
> > +                       s_nearbyintf-sse4_1 s_roundeven-sse4_1 \
> > +                       s_roundevenf-sse4_1 s_rint-sse4_1 s_rintf-sse4_1 \
> >                         s_trunc-sse4_1 s_truncf-sse4_1
> >
> >  libm-sysdep_routines += e_exp-fma e_log-fma e_pow-fma s_atan-fma \
> > diff --git a/sysdeps/x86_64/fpu/multiarch/s_roundeven-c.c b/sysdeps/x86_64/fpu/multiarch/s_roundeven-c.c
> > new file mode 100644
> > index 0000000000..c7be43cb22
> > --- /dev/null
> > +++ b/sysdeps/x86_64/fpu/multiarch/s_roundeven-c.c
> > @@ -0,0 +1,2 @@
> > +#define __roundeven __roundeven_c
> > +#include <sysdeps/ieee754/dbl-64/s_roundeven.c>
> > diff --git a/sysdeps/x86_64/fpu/multiarch/s_roundeven-sse4_1.S b/sysdeps/x86_64/fpu/multiarch/s_roundeven-sse4_1.S
> > new file mode 100644
> > index 0000000000..6ae8f6b1d3
> > --- /dev/null
> > +++ b/sysdeps/x86_64/fpu/multiarch/s_roundeven-sse4_1.S
> > @@ -0,0 +1,24 @@
> > +/* Copyright (C) 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/>.  */
> > +
> > +#include <sysdep.h>
> > +
> > +       .section .text.sse4.1,"ax",@progbits
> > +ENTRY(__roundeven_sse41)
> > +       roundsd $8, %xmm0, %xmm0
> > +       ret
> > +END(__roundeven_sse41)
> > diff --git a/sysdeps/x86_64/fpu/multiarch/s_roundeven.c b/sysdeps/x86_64/fpu/multiarch/s_roundeven.c
> > new file mode 100644
> > index 0000000000..d92eda652a
> > --- /dev/null
> > +++ b/sysdeps/x86_64/fpu/multiarch/s_roundeven.c
> > @@ -0,0 +1,31 @@
> > +/* Multiple versions of __roundeven.
> > +   Copyright (C) 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/>.  */
> > +
> > +#include <libm-alias-double.h>
> > +
> > +#define roundeven __redirect_roundeven
> > +#define __roundeven __redirect___roundeven
> > +#include <math.h>
> > +#undef roundeven
> > +#undef __roundeven
> > +
> > +#define SYMBOL_NAME roundeven
> > +#include "ifunc-sse4_1.h"
> > +
> > +libc_ifunc_redirected (__redirect_roundeven, __roundeven, IFUNC_SELECTOR ());
> > +libm_alias_double (__roundeven, roundeven)
> > diff --git a/sysdeps/x86_64/fpu/multiarch/s_roundevenf-c.c b/sysdeps/x86_64/fpu/multiarch/s_roundevenf-c.c
> > new file mode 100644
> > index 0000000000..72a6e7d1fb
> > --- /dev/null
> > +++ b/sysdeps/x86_64/fpu/multiarch/s_roundevenf-c.c
> > @@ -0,0 +1,3 @@
> > +#undef __roundevenf
> > +#define __roundevenf __roundevenf_c
> > +#include <sysdeps/ieee754/flt-32/s_roundevenf.c>
> > diff --git a/sysdeps/x86_64/fpu/multiarch/s_roundevenf-sse4_1.S b/sysdeps/x86_64/fpu/multiarch/s_roundevenf-sse4_1.S
> > new file mode 100644
> > index 0000000000..a76e10807e
> > --- /dev/null
> > +++ b/sysdeps/x86_64/fpu/multiarch/s_roundevenf-sse4_1.S
> > @@ -0,0 +1,24 @@
> > +/* Copyright (C) 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/>.  */
> > +
> > +#include <sysdep.h>
> > +
> > +       .section .text.sse4.1,"ax",@progbits
> > +ENTRY(__roundevenf_sse41)
> > +       roundss $8, %xmm0, %xmm0
> > +       ret
> > +END(__roundevenf_sse41)
> > diff --git a/sysdeps/x86_64/fpu/multiarch/s_roundevenf.c b/sysdeps/x86_64/fpu/multiarch/s_roundevenf.c
> > new file mode 100644
> > index 0000000000..2ee196e68f
> > --- /dev/null
> > +++ b/sysdeps/x86_64/fpu/multiarch/s_roundevenf.c
> > @@ -0,0 +1,31 @@
> > +/* Multiple versions of __roundevenf.
> > +   Copyright (C) 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/>.  */
> > +
> > +#include <libm-alias-float.h>
> > +
> > +#define roundevenf __redirect_roundevenf
> > +#define __roundevenf __redirect___roundevenf
> > +#include <math.h>
> > +#undef roundevenf
> > +#undef __roundevenf
> > +
> > +#define SYMBOL_NAME roundevenf
> > +#include "ifunc-sse4_1.h"
> > +
> > +libc_ifunc_redirected (__redirect_roundevenf, __roundevenf, IFUNC_SELECTOR ());
> > +libm_alias_float (__roundeven, roundeven)
> > --
> > 2.31.1
> >
>
> I would like to backport this patch to release branches.
> Any comments or objections?
>
> --Sunil

I would like to backport this patch to release branch 2.33.

Any comments/suggestions or objections on this.

commit 1683249d17e14827b6579529742eb895027dfa84
Author: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
Date:   Mon May 24 09:43:11 2021 +0800

    x86_64: roundeven with sse4.1 support

    This patch adds support for the sse4.1 hardware floating point
    roundeven.

    Here is some benchmark results on my systems:

^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [PATCH v8 1/4] math: redirect roundeven function
  2022-09-11 19:56   ` [PATCH v8 1/4] math: redirect roundeven function Sunil Pandey
@ 2022-09-14  1:25     ` Noah Goldstein
  2022-09-23 10:49       ` 謝昇達(Shen-Ta Hsieh)
  0 siblings, 1 reply; 8+ messages in thread
From: Noah Goldstein @ 2022-09-14  1:25 UTC (permalink / raw)
  To: Sunil Pandey
  Cc: H.J. Lu, Libc-stable Mailing List, Florian Weimer, Shen-Ta Hsieh,
	GNU C Library

On Sun, Sep 11, 2022 at 12:57 PM Sunil Pandey via Libc-stable
<libc-stable@sourceware.org> wrote:
>
> On Wed, Jun 23, 2021 at 3:32 PM H.J. Lu via Libc-alpha
> <libc-alpha@sourceware.org> wrote:
> >
> > From: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
> >
> > This patch redirect roundeven function for futhermore changes.
> >
> > Signed-off-by: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
> > Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
> > ---
> >  include/math.h                             | 2 +-
> >  sysdeps/ieee754/dbl-64/s_roundeven.c       | 4 +++-
> >  sysdeps/ieee754/float128/s_roundevenf128.c | 1 +
> >  sysdeps/ieee754/flt-32/s_roundevenf.c      | 3 +++
> >  sysdeps/ieee754/ldbl-128/s_roundevenl.c    | 1 +
> >  sysdeps/ieee754/ldbl-96/s_roundevenl.c     | 1 +
> >  6 files changed, 10 insertions(+), 2 deletions(-)
> >
> > diff --git a/include/math.h b/include/math.h
> > index e1c2a4eb64..b4772d3d3b 100644
> > --- a/include/math.h
> > +++ b/include/math.h
> > @@ -38,7 +38,6 @@ libm_hidden_proto (__issignaling)
> >  libm_hidden_proto (__issignalingf)
> >  libm_hidden_proto (__exp)
> >  libm_hidden_proto (__expf)
> > -libm_hidden_proto (__roundeven)
> >
> >  #  if !defined __NO_LONG_DOUBLE_MATH \
> >        && __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 0
> > @@ -159,6 +158,7 @@ fabsf128 (_Float128 x)
> >  MATH_REDIRECT (sqrt, "__ieee754_", MATH_REDIRECT_UNARY_ARGS)
> >  MATH_REDIRECT (ceil, "__", MATH_REDIRECT_UNARY_ARGS)
> >  MATH_REDIRECT (floor, "__", MATH_REDIRECT_UNARY_ARGS)
> > +MATH_REDIRECT (roundeven, "__", MATH_REDIRECT_UNARY_ARGS)
> >  MATH_REDIRECT (rint, "__", MATH_REDIRECT_UNARY_ARGS)
> >  MATH_REDIRECT (trunc, "__", MATH_REDIRECT_UNARY_ARGS)
> >  MATH_REDIRECT (round, "__", MATH_REDIRECT_UNARY_ARGS)
> > diff --git a/sysdeps/ieee754/dbl-64/s_roundeven.c b/sysdeps/ieee754/dbl-64/s_roundeven.c
> > index 943b2c634c..5deff3bb8a 100644
> > --- a/sysdeps/ieee754/dbl-64/s_roundeven.c
> > +++ b/sysdeps/ieee754/dbl-64/s_roundeven.c
> > @@ -16,6 +16,7 @@
> >     License along with the GNU C Library; if not, see
> >     <https://www.gnu.org/licenses/>.  */
> >
> > +#define NO_MATH_REDIRECT
> >  #include <math.h>
> >  #include <math_private.h>
> >  #include <libm-alias-double.h>
> > @@ -66,5 +67,6 @@ __roundeven (double x)
> >    INSERT_WORDS64 (x, ix);
> >    return x;
> >  }
> > -hidden_def (__roundeven)
> > +#ifndef __roundeven
> >  libm_alias_double (__roundeven, roundeven)
> > +#endif
> > diff --git a/sysdeps/ieee754/float128/s_roundevenf128.c b/sysdeps/ieee754/float128/s_roundevenf128.c
> > index 5a9b3f395f..e0faf727f6 100644
> > --- a/sysdeps/ieee754/float128/s_roundevenf128.c
> > +++ b/sysdeps/ieee754/float128/s_roundevenf128.c
> > @@ -1,2 +1,3 @@
> > +#define NO_MATH_REDIRECT
> >  #include <float128_private.h>
> >  #include "../ldbl-128/s_roundevenl.c"
> > diff --git a/sysdeps/ieee754/flt-32/s_roundevenf.c b/sysdeps/ieee754/flt-32/s_roundevenf.c
> > index ae54365bbe..2cc0d7b001 100644
> > --- a/sysdeps/ieee754/flt-32/s_roundevenf.c
> > +++ b/sysdeps/ieee754/flt-32/s_roundevenf.c
> > @@ -17,6 +17,7 @@
> >     License along with the GNU C Library; if not, see
> >     <https://www.gnu.org/licenses/>.  */
> >
> > +#define NO_MATH_REDIRECT
> >  #include <math.h>
> >  #include <math_private.h>
> >  #include <libm-alias-float.h>
> > @@ -67,4 +68,6 @@ __roundevenf (float x)
> >    SET_FLOAT_WORD (x, ix);
> >    return x;
> >  }
> > +#ifndef __roundevenf
> >  libm_alias_float (__roundeven, roundeven)
> > +#endif
> > diff --git a/sysdeps/ieee754/ldbl-128/s_roundevenl.c b/sysdeps/ieee754/ldbl-128/s_roundevenl.c
> > index 02765be0e0..7c9c11fad2 100644
> > --- a/sysdeps/ieee754/ldbl-128/s_roundevenl.c
> > +++ b/sysdeps/ieee754/ldbl-128/s_roundevenl.c
> > @@ -17,6 +17,7 @@
> >     License along with the GNU C Library; if not, see
> >     <https://www.gnu.org/licenses/>.  */
> >
> > +#define NO_MATH_REDIRECT
> >  #include <math.h>
> >  #include <math_private.h>
> >  #include <libm-alias-ldouble.h>
> > diff --git a/sysdeps/ieee754/ldbl-96/s_roundevenl.c b/sysdeps/ieee754/ldbl-96/s_roundevenl.c
> > index 8340116ed8..f826829c31 100644
> > --- a/sysdeps/ieee754/ldbl-96/s_roundevenl.c
> > +++ b/sysdeps/ieee754/ldbl-96/s_roundevenl.c
> > @@ -17,6 +17,7 @@
> >     License along with the GNU C Library; if not, see
> >     <https://www.gnu.org/licenses/>.  */
> >
> > +#define NO_MATH_REDIRECT
> >  #include <math.h>
> >  #include <math_private.h>
> >  #include <libm-alias-ldouble.h>
> > --
> > 2.31.1
> >
>
> I would like to backport this patch to release branch 2.33.
>
> Any comments/suggestions or objections on this.
>
> commit 447954a206837b5f153869cfeeeab44631c3fac9
> Author: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
> Date:   Mon May 24 09:43:10 2021 +0800
>
>     math: redirect roundeven function
>
>     This patch redirect roundeven function for futhermore changes.
>
>     Signed-off-by: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
>     Reviewed-by: H.J. Lu <hjl.tools@gmail.com>

Fine by me.

^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [PATCH v8 3/4] x86_64: roundeven with sse4.1 support
  2022-09-11 20:08     ` Sunil Pandey
@ 2022-09-14  1:25       ` Noah Goldstein
  2022-09-23 10:50         ` 謝昇達(Shen-Ta Hsieh)
  0 siblings, 1 reply; 8+ messages in thread
From: Noah Goldstein @ 2022-09-14  1:25 UTC (permalink / raw)
  To: Sunil Pandey
  Cc: H.J. Lu, Libc-stable Mailing List, Florian Weimer, Shen-Ta Hsieh,
	GNU C Library

On Sun, Sep 11, 2022 at 1:09 PM Sunil Pandey via Libc-stable
<libc-stable@sourceware.org> wrote:
>
> On Wed, Apr 27, 2022 at 5:11 PM Sunil Pandey <skpgkp2@gmail.com> wrote:
> >
> > On Wed, Jun 23, 2021 at 3:32 PM H.J. Lu via Libc-alpha
> > <libc-alpha@sourceware.org> wrote:
> > >
> > > From: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
> > >
> > > This patch adds support for the sse4.1 hardware floating point
> > > roundeven.
> > >
> > > Here is some benchmark results on my systems:
> > >
> > > =AMD Ryzen 9 3900X 12-Core Processor=
> > >
> > > * benchmark result before this commit
> > > |            |    roundeven |   roundevenf |
> > > |------------|--------------|--------------|
> > > | duration   |  3.75587e+09 |  3.75114e+09 |
> > > | iterations |  3.93053e+08 |  4.35402e+08 |
> > > | max        | 52.592       | 58.71        |
> > > | min        |  7.98        |  7.22        |
> > > | mean       |  9.55563     |  8.61535     |
> > >
> > > * benchmark result after this commit
> > > |            |     roundeven |   roundevenf |
> > > |------------|---------------|--------------|
> > > | duration   |   3.73815e+09 |  3.73738e+09 |
> > > | iterations |   5.82692e+08 |  5.91498e+08 |
> > > | max        |  56.468       | 51.642       |
> > > | min        |   6.27        |  6.156       |
> > > | mean       |   6.41532     |  6.3185      |
> > >
> > > =Intel(R) Pentium(R) CPU D1508 @ 2.20GHz=
> > >
> > > * benchmark result before this commit
> > > |            |    roundeven |   roundevenf |
> > > |------------|--------------|--------------|
> > > | duration   |  2.18208e+09 |  2.18258e+09 |
> > > | iterations |  2.39932e+08 |  2.46924e+08 |
> > > | max        | 96.378       | 98.035       |
> > > | min        |  6.776       |  5.94        |
> > > | mean       |  9.09456     |  8.83907     |
> > >
> > > * benchmark result after this commit
> > > |            |    roundeven |   roundevenf |
> > > |------------|--------------|--------------|
> > > | duration   |  2.17415e+09 |  2.17005e+09 |
> > > | iterations |  3.56193e+08 |  4.09824e+08 |
> > > | max        | 51.693       | 97.192       |
> > > | min        |  5.926       |  5.093       |
> > > | mean       |  6.10385     |  5.29507     |
> > >
> > > Signed-off-by: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
> > > Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
> > > ---
> > >  sysdeps/x86_64/fpu/multiarch/Makefile         |  5 +--
> > >  sysdeps/x86_64/fpu/multiarch/s_roundeven-c.c  |  2 ++
> > >  .../x86_64/fpu/multiarch/s_roundeven-sse4_1.S | 24 ++++++++++++++
> > >  sysdeps/x86_64/fpu/multiarch/s_roundeven.c    | 31 +++++++++++++++++++
> > >  sysdeps/x86_64/fpu/multiarch/s_roundevenf-c.c |  3 ++
> > >  .../fpu/multiarch/s_roundevenf-sse4_1.S       | 24 ++++++++++++++
> > >  sysdeps/x86_64/fpu/multiarch/s_roundevenf.c   | 31 +++++++++++++++++++
> > >  7 files changed, 118 insertions(+), 2 deletions(-)
> > >  create mode 100644 sysdeps/x86_64/fpu/multiarch/s_roundeven-c.c
> > >  create mode 100644 sysdeps/x86_64/fpu/multiarch/s_roundeven-sse4_1.S
> > >  create mode 100644 sysdeps/x86_64/fpu/multiarch/s_roundeven.c
> > >  create mode 100644 sysdeps/x86_64/fpu/multiarch/s_roundevenf-c.c
> > >  create mode 100644 sysdeps/x86_64/fpu/multiarch/s_roundevenf-sse4_1.S
> > >  create mode 100644 sysdeps/x86_64/fpu/multiarch/s_roundevenf.c
> > >
> > > diff --git a/sysdeps/x86_64/fpu/multiarch/Makefile b/sysdeps/x86_64/fpu/multiarch/Makefile
> > > index 57892c56bb..d425ffd6d3 100644
> > > --- a/sysdeps/x86_64/fpu/multiarch/Makefile
> > > +++ b/sysdeps/x86_64/fpu/multiarch/Makefile
> > > @@ -1,11 +1,12 @@
> > >  ifeq ($(subdir),math)
> > >  libm-sysdep_routines += s_floor-c s_ceil-c s_floorf-c s_ceilf-c \
> > >                         s_rint-c s_rintf-c s_nearbyint-c s_nearbyintf-c \
> > > -                       s_trunc-c s_truncf-c
> > > +                       s_roundeven-c s_roundevenf-c s_trunc-c s_truncf-c
> > >
> > >  libm-sysdep_routines += s_ceil-sse4_1 s_ceilf-sse4_1 s_floor-sse4_1 \
> > >                         s_floorf-sse4_1 s_nearbyint-sse4_1 \
> > > -                       s_nearbyintf-sse4_1 s_rint-sse4_1 s_rintf-sse4_1 \
> > > +                       s_nearbyintf-sse4_1 s_roundeven-sse4_1 \
> > > +                       s_roundevenf-sse4_1 s_rint-sse4_1 s_rintf-sse4_1 \
> > >                         s_trunc-sse4_1 s_truncf-sse4_1
> > >
> > >  libm-sysdep_routines += e_exp-fma e_log-fma e_pow-fma s_atan-fma \
> > > diff --git a/sysdeps/x86_64/fpu/multiarch/s_roundeven-c.c b/sysdeps/x86_64/fpu/multiarch/s_roundeven-c.c
> > > new file mode 100644
> > > index 0000000000..c7be43cb22
> > > --- /dev/null
> > > +++ b/sysdeps/x86_64/fpu/multiarch/s_roundeven-c.c
> > > @@ -0,0 +1,2 @@
> > > +#define __roundeven __roundeven_c
> > > +#include <sysdeps/ieee754/dbl-64/s_roundeven.c>
> > > diff --git a/sysdeps/x86_64/fpu/multiarch/s_roundeven-sse4_1.S b/sysdeps/x86_64/fpu/multiarch/s_roundeven-sse4_1.S
> > > new file mode 100644
> > > index 0000000000..6ae8f6b1d3
> > > --- /dev/null
> > > +++ b/sysdeps/x86_64/fpu/multiarch/s_roundeven-sse4_1.S
> > > @@ -0,0 +1,24 @@
> > > +/* Copyright (C) 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/>.  */
> > > +
> > > +#include <sysdep.h>
> > > +
> > > +       .section .text.sse4.1,"ax",@progbits
> > > +ENTRY(__roundeven_sse41)
> > > +       roundsd $8, %xmm0, %xmm0
> > > +       ret
> > > +END(__roundeven_sse41)
> > > diff --git a/sysdeps/x86_64/fpu/multiarch/s_roundeven.c b/sysdeps/x86_64/fpu/multiarch/s_roundeven.c
> > > new file mode 100644
> > > index 0000000000..d92eda652a
> > > --- /dev/null
> > > +++ b/sysdeps/x86_64/fpu/multiarch/s_roundeven.c
> > > @@ -0,0 +1,31 @@
> > > +/* Multiple versions of __roundeven.
> > > +   Copyright (C) 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/>.  */
> > > +
> > > +#include <libm-alias-double.h>
> > > +
> > > +#define roundeven __redirect_roundeven
> > > +#define __roundeven __redirect___roundeven
> > > +#include <math.h>
> > > +#undef roundeven
> > > +#undef __roundeven
> > > +
> > > +#define SYMBOL_NAME roundeven
> > > +#include "ifunc-sse4_1.h"
> > > +
> > > +libc_ifunc_redirected (__redirect_roundeven, __roundeven, IFUNC_SELECTOR ());
> > > +libm_alias_double (__roundeven, roundeven)
> > > diff --git a/sysdeps/x86_64/fpu/multiarch/s_roundevenf-c.c b/sysdeps/x86_64/fpu/multiarch/s_roundevenf-c.c
> > > new file mode 100644
> > > index 0000000000..72a6e7d1fb
> > > --- /dev/null
> > > +++ b/sysdeps/x86_64/fpu/multiarch/s_roundevenf-c.c
> > > @@ -0,0 +1,3 @@
> > > +#undef __roundevenf
> > > +#define __roundevenf __roundevenf_c
> > > +#include <sysdeps/ieee754/flt-32/s_roundevenf.c>
> > > diff --git a/sysdeps/x86_64/fpu/multiarch/s_roundevenf-sse4_1.S b/sysdeps/x86_64/fpu/multiarch/s_roundevenf-sse4_1.S
> > > new file mode 100644
> > > index 0000000000..a76e10807e
> > > --- /dev/null
> > > +++ b/sysdeps/x86_64/fpu/multiarch/s_roundevenf-sse4_1.S
> > > @@ -0,0 +1,24 @@
> > > +/* Copyright (C) 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/>.  */
> > > +
> > > +#include <sysdep.h>
> > > +
> > > +       .section .text.sse4.1,"ax",@progbits
> > > +ENTRY(__roundevenf_sse41)
> > > +       roundss $8, %xmm0, %xmm0
> > > +       ret
> > > +END(__roundevenf_sse41)
> > > diff --git a/sysdeps/x86_64/fpu/multiarch/s_roundevenf.c b/sysdeps/x86_64/fpu/multiarch/s_roundevenf.c
> > > new file mode 100644
> > > index 0000000000..2ee196e68f
> > > --- /dev/null
> > > +++ b/sysdeps/x86_64/fpu/multiarch/s_roundevenf.c
> > > @@ -0,0 +1,31 @@
> > > +/* Multiple versions of __roundevenf.
> > > +   Copyright (C) 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/>.  */
> > > +
> > > +#include <libm-alias-float.h>
> > > +
> > > +#define roundevenf __redirect_roundevenf
> > > +#define __roundevenf __redirect___roundevenf
> > > +#include <math.h>
> > > +#undef roundevenf
> > > +#undef __roundevenf
> > > +
> > > +#define SYMBOL_NAME roundevenf
> > > +#include "ifunc-sse4_1.h"
> > > +
> > > +libc_ifunc_redirected (__redirect_roundevenf, __roundevenf, IFUNC_SELECTOR ());
> > > +libm_alias_float (__roundeven, roundeven)
> > > --
> > > 2.31.1
> > >
> >
> > I would like to backport this patch to release branches.
> > Any comments or objections?
> >
> > --Sunil
>
> I would like to backport this patch to release branch 2.33.
>
> Any comments/suggestions or objections on this.

Fine by me.
>
> commit 1683249d17e14827b6579529742eb895027dfa84
> Author: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
> Date:   Mon May 24 09:43:11 2021 +0800
>
>     x86_64: roundeven with sse4.1 support
>
>     This patch adds support for the sse4.1 hardware floating point
>     roundeven.
>
>     Here is some benchmark results on my systems:

^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [PATCH v8 1/4] math: redirect roundeven function
  2022-09-14  1:25     ` Noah Goldstein
@ 2022-09-23 10:49       ` 謝昇達(Shen-Ta Hsieh)
  2022-09-24  2:12         ` Sunil Pandey
  0 siblings, 1 reply; 8+ messages in thread
From: 謝昇達(Shen-Ta Hsieh) @ 2022-09-23 10:49 UTC (permalink / raw)
  To: Noah Goldstein
  Cc: Sunil Pandey, H.J. Lu, Libc-stable Mailing List, Florian Weimer,
	GNU C Library

Fine by me, too

Noah Goldstein <goldstein.w.n@gmail.com> 於 2022年9月14日 週三 上午9:25寫道:
>
> On Sun, Sep 11, 2022 at 12:57 PM Sunil Pandey via Libc-stable
> <libc-stable@sourceware.org> wrote:
> >
> > On Wed, Jun 23, 2021 at 3:32 PM H.J. Lu via Libc-alpha
> > <libc-alpha@sourceware.org> wrote:
> > >
> > > From: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
> > >
> > > This patch redirect roundeven function for futhermore changes.
> > >
> > > Signed-off-by: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
> > > Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
> > > ---
> > >  include/math.h                             | 2 +-
> > >  sysdeps/ieee754/dbl-64/s_roundeven.c       | 4 +++-
> > >  sysdeps/ieee754/float128/s_roundevenf128.c | 1 +
> > >  sysdeps/ieee754/flt-32/s_roundevenf.c      | 3 +++
> > >  sysdeps/ieee754/ldbl-128/s_roundevenl.c    | 1 +
> > >  sysdeps/ieee754/ldbl-96/s_roundevenl.c     | 1 +
> > >  6 files changed, 10 insertions(+), 2 deletions(-)
> > >
> > > diff --git a/include/math.h b/include/math.h
> > > index e1c2a4eb64..b4772d3d3b 100644
> > > --- a/include/math.h
> > > +++ b/include/math.h
> > > @@ -38,7 +38,6 @@ libm_hidden_proto (__issignaling)
> > >  libm_hidden_proto (__issignalingf)
> > >  libm_hidden_proto (__exp)
> > >  libm_hidden_proto (__expf)
> > > -libm_hidden_proto (__roundeven)
> > >
> > >  #  if !defined __NO_LONG_DOUBLE_MATH \
> > >        && __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 0
> > > @@ -159,6 +158,7 @@ fabsf128 (_Float128 x)
> > >  MATH_REDIRECT (sqrt, "__ieee754_", MATH_REDIRECT_UNARY_ARGS)
> > >  MATH_REDIRECT (ceil, "__", MATH_REDIRECT_UNARY_ARGS)
> > >  MATH_REDIRECT (floor, "__", MATH_REDIRECT_UNARY_ARGS)
> > > +MATH_REDIRECT (roundeven, "__", MATH_REDIRECT_UNARY_ARGS)
> > >  MATH_REDIRECT (rint, "__", MATH_REDIRECT_UNARY_ARGS)
> > >  MATH_REDIRECT (trunc, "__", MATH_REDIRECT_UNARY_ARGS)
> > >  MATH_REDIRECT (round, "__", MATH_REDIRECT_UNARY_ARGS)
> > > diff --git a/sysdeps/ieee754/dbl-64/s_roundeven.c b/sysdeps/ieee754/dbl-64/s_roundeven.c
> > > index 943b2c634c..5deff3bb8a 100644
> > > --- a/sysdeps/ieee754/dbl-64/s_roundeven.c
> > > +++ b/sysdeps/ieee754/dbl-64/s_roundeven.c
> > > @@ -16,6 +16,7 @@
> > >     License along with the GNU C Library; if not, see
> > >     <https://www.gnu.org/licenses/>.  */
> > >
> > > +#define NO_MATH_REDIRECT
> > >  #include <math.h>
> > >  #include <math_private.h>
> > >  #include <libm-alias-double.h>
> > > @@ -66,5 +67,6 @@ __roundeven (double x)
> > >    INSERT_WORDS64 (x, ix);
> > >    return x;
> > >  }
> > > -hidden_def (__roundeven)
> > > +#ifndef __roundeven
> > >  libm_alias_double (__roundeven, roundeven)
> > > +#endif
> > > diff --git a/sysdeps/ieee754/float128/s_roundevenf128.c b/sysdeps/ieee754/float128/s_roundevenf128.c
> > > index 5a9b3f395f..e0faf727f6 100644
> > > --- a/sysdeps/ieee754/float128/s_roundevenf128.c
> > > +++ b/sysdeps/ieee754/float128/s_roundevenf128.c
> > > @@ -1,2 +1,3 @@
> > > +#define NO_MATH_REDIRECT
> > >  #include <float128_private.h>
> > >  #include "../ldbl-128/s_roundevenl.c"
> > > diff --git a/sysdeps/ieee754/flt-32/s_roundevenf.c b/sysdeps/ieee754/flt-32/s_roundevenf.c
> > > index ae54365bbe..2cc0d7b001 100644
> > > --- a/sysdeps/ieee754/flt-32/s_roundevenf.c
> > > +++ b/sysdeps/ieee754/flt-32/s_roundevenf.c
> > > @@ -17,6 +17,7 @@
> > >     License along with the GNU C Library; if not, see
> > >     <https://www.gnu.org/licenses/>.  */
> > >
> > > +#define NO_MATH_REDIRECT
> > >  #include <math.h>
> > >  #include <math_private.h>
> > >  #include <libm-alias-float.h>
> > > @@ -67,4 +68,6 @@ __roundevenf (float x)
> > >    SET_FLOAT_WORD (x, ix);
> > >    return x;
> > >  }
> > > +#ifndef __roundevenf
> > >  libm_alias_float (__roundeven, roundeven)
> > > +#endif
> > > diff --git a/sysdeps/ieee754/ldbl-128/s_roundevenl.c b/sysdeps/ieee754/ldbl-128/s_roundevenl.c
> > > index 02765be0e0..7c9c11fad2 100644
> > > --- a/sysdeps/ieee754/ldbl-128/s_roundevenl.c
> > > +++ b/sysdeps/ieee754/ldbl-128/s_roundevenl.c
> > > @@ -17,6 +17,7 @@
> > >     License along with the GNU C Library; if not, see
> > >     <https://www.gnu.org/licenses/>.  */
> > >
> > > +#define NO_MATH_REDIRECT
> > >  #include <math.h>
> > >  #include <math_private.h>
> > >  #include <libm-alias-ldouble.h>
> > > diff --git a/sysdeps/ieee754/ldbl-96/s_roundevenl.c b/sysdeps/ieee754/ldbl-96/s_roundevenl.c
> > > index 8340116ed8..f826829c31 100644
> > > --- a/sysdeps/ieee754/ldbl-96/s_roundevenl.c
> > > +++ b/sysdeps/ieee754/ldbl-96/s_roundevenl.c
> > > @@ -17,6 +17,7 @@
> > >     License along with the GNU C Library; if not, see
> > >     <https://www.gnu.org/licenses/>.  */
> > >
> > > +#define NO_MATH_REDIRECT
> > >  #include <math.h>
> > >  #include <math_private.h>
> > >  #include <libm-alias-ldouble.h>
> > > --
> > > 2.31.1
> > >
> >
> > I would like to backport this patch to release branch 2.33.
> >
> > Any comments/suggestions or objections on this.
> >
> > commit 447954a206837b5f153869cfeeeab44631c3fac9
> > Author: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
> > Date:   Mon May 24 09:43:10 2021 +0800
> >
> >     math: redirect roundeven function
> >
> >     This patch redirect roundeven function for futhermore changes.
> >
> >     Signed-off-by: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
> >     Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
>
> Fine by me.

^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [PATCH v8 3/4] x86_64: roundeven with sse4.1 support
  2022-09-14  1:25       ` Noah Goldstein
@ 2022-09-23 10:50         ` 謝昇達(Shen-Ta Hsieh)
  0 siblings, 0 replies; 8+ messages in thread
From: 謝昇達(Shen-Ta Hsieh) @ 2022-09-23 10:50 UTC (permalink / raw)
  To: Noah Goldstein
  Cc: Sunil Pandey, H.J. Lu, Libc-stable Mailing List, Florian Weimer,
	GNU C Library

Fine by me, too

Noah Goldstein <goldstein.w.n@gmail.com> 於 2022年9月14日 週三 上午9:25寫道:
>
> On Sun, Sep 11, 2022 at 1:09 PM Sunil Pandey via Libc-stable
> <libc-stable@sourceware.org> wrote:
> >
> > On Wed, Apr 27, 2022 at 5:11 PM Sunil Pandey <skpgkp2@gmail.com> wrote:
> > >
> > > On Wed, Jun 23, 2021 at 3:32 PM H.J. Lu via Libc-alpha
> > > <libc-alpha@sourceware.org> wrote:
> > > >
> > > > From: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
> > > >
> > > > This patch adds support for the sse4.1 hardware floating point
> > > > roundeven.
> > > >
> > > > Here is some benchmark results on my systems:
> > > >
> > > > =AMD Ryzen 9 3900X 12-Core Processor=
> > > >
> > > > * benchmark result before this commit
> > > > |            |    roundeven |   roundevenf |
> > > > |------------|--------------|--------------|
> > > > | duration   |  3.75587e+09 |  3.75114e+09 |
> > > > | iterations |  3.93053e+08 |  4.35402e+08 |
> > > > | max        | 52.592       | 58.71        |
> > > > | min        |  7.98        |  7.22        |
> > > > | mean       |  9.55563     |  8.61535     |
> > > >
> > > > * benchmark result after this commit
> > > > |            |     roundeven |   roundevenf |
> > > > |------------|---------------|--------------|
> > > > | duration   |   3.73815e+09 |  3.73738e+09 |
> > > > | iterations |   5.82692e+08 |  5.91498e+08 |
> > > > | max        |  56.468       | 51.642       |
> > > > | min        |   6.27        |  6.156       |
> > > > | mean       |   6.41532     |  6.3185      |
> > > >
> > > > =Intel(R) Pentium(R) CPU D1508 @ 2.20GHz=
> > > >
> > > > * benchmark result before this commit
> > > > |            |    roundeven |   roundevenf |
> > > > |------------|--------------|--------------|
> > > > | duration   |  2.18208e+09 |  2.18258e+09 |
> > > > | iterations |  2.39932e+08 |  2.46924e+08 |
> > > > | max        | 96.378       | 98.035       |
> > > > | min        |  6.776       |  5.94        |
> > > > | mean       |  9.09456     |  8.83907     |
> > > >
> > > > * benchmark result after this commit
> > > > |            |    roundeven |   roundevenf |
> > > > |------------|--------------|--------------|
> > > > | duration   |  2.17415e+09 |  2.17005e+09 |
> > > > | iterations |  3.56193e+08 |  4.09824e+08 |
> > > > | max        | 51.693       | 97.192       |
> > > > | min        |  5.926       |  5.093       |
> > > > | mean       |  6.10385     |  5.29507     |
> > > >
> > > > Signed-off-by: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
> > > > Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
> > > > ---
> > > >  sysdeps/x86_64/fpu/multiarch/Makefile         |  5 +--
> > > >  sysdeps/x86_64/fpu/multiarch/s_roundeven-c.c  |  2 ++
> > > >  .../x86_64/fpu/multiarch/s_roundeven-sse4_1.S | 24 ++++++++++++++
> > > >  sysdeps/x86_64/fpu/multiarch/s_roundeven.c    | 31 +++++++++++++++++++
> > > >  sysdeps/x86_64/fpu/multiarch/s_roundevenf-c.c |  3 ++
> > > >  .../fpu/multiarch/s_roundevenf-sse4_1.S       | 24 ++++++++++++++
> > > >  sysdeps/x86_64/fpu/multiarch/s_roundevenf.c   | 31 +++++++++++++++++++
> > > >  7 files changed, 118 insertions(+), 2 deletions(-)
> > > >  create mode 100644 sysdeps/x86_64/fpu/multiarch/s_roundeven-c.c
> > > >  create mode 100644 sysdeps/x86_64/fpu/multiarch/s_roundeven-sse4_1.S
> > > >  create mode 100644 sysdeps/x86_64/fpu/multiarch/s_roundeven.c
> > > >  create mode 100644 sysdeps/x86_64/fpu/multiarch/s_roundevenf-c.c
> > > >  create mode 100644 sysdeps/x86_64/fpu/multiarch/s_roundevenf-sse4_1.S
> > > >  create mode 100644 sysdeps/x86_64/fpu/multiarch/s_roundevenf.c
> > > >
> > > > diff --git a/sysdeps/x86_64/fpu/multiarch/Makefile b/sysdeps/x86_64/fpu/multiarch/Makefile
> > > > index 57892c56bb..d425ffd6d3 100644
> > > > --- a/sysdeps/x86_64/fpu/multiarch/Makefile
> > > > +++ b/sysdeps/x86_64/fpu/multiarch/Makefile
> > > > @@ -1,11 +1,12 @@
> > > >  ifeq ($(subdir),math)
> > > >  libm-sysdep_routines += s_floor-c s_ceil-c s_floorf-c s_ceilf-c \
> > > >                         s_rint-c s_rintf-c s_nearbyint-c s_nearbyintf-c \
> > > > -                       s_trunc-c s_truncf-c
> > > > +                       s_roundeven-c s_roundevenf-c s_trunc-c s_truncf-c
> > > >
> > > >  libm-sysdep_routines += s_ceil-sse4_1 s_ceilf-sse4_1 s_floor-sse4_1 \
> > > >                         s_floorf-sse4_1 s_nearbyint-sse4_1 \
> > > > -                       s_nearbyintf-sse4_1 s_rint-sse4_1 s_rintf-sse4_1 \
> > > > +                       s_nearbyintf-sse4_1 s_roundeven-sse4_1 \
> > > > +                       s_roundevenf-sse4_1 s_rint-sse4_1 s_rintf-sse4_1 \
> > > >                         s_trunc-sse4_1 s_truncf-sse4_1
> > > >
> > > >  libm-sysdep_routines += e_exp-fma e_log-fma e_pow-fma s_atan-fma \
> > > > diff --git a/sysdeps/x86_64/fpu/multiarch/s_roundeven-c.c b/sysdeps/x86_64/fpu/multiarch/s_roundeven-c.c
> > > > new file mode 100644
> > > > index 0000000000..c7be43cb22
> > > > --- /dev/null
> > > > +++ b/sysdeps/x86_64/fpu/multiarch/s_roundeven-c.c
> > > > @@ -0,0 +1,2 @@
> > > > +#define __roundeven __roundeven_c
> > > > +#include <sysdeps/ieee754/dbl-64/s_roundeven.c>
> > > > diff --git a/sysdeps/x86_64/fpu/multiarch/s_roundeven-sse4_1.S b/sysdeps/x86_64/fpu/multiarch/s_roundeven-sse4_1.S
> > > > new file mode 100644
> > > > index 0000000000..6ae8f6b1d3
> > > > --- /dev/null
> > > > +++ b/sysdeps/x86_64/fpu/multiarch/s_roundeven-sse4_1.S
> > > > @@ -0,0 +1,24 @@
> > > > +/* Copyright (C) 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/>.  */
> > > > +
> > > > +#include <sysdep.h>
> > > > +
> > > > +       .section .text.sse4.1,"ax",@progbits
> > > > +ENTRY(__roundeven_sse41)
> > > > +       roundsd $8, %xmm0, %xmm0
> > > > +       ret
> > > > +END(__roundeven_sse41)
> > > > diff --git a/sysdeps/x86_64/fpu/multiarch/s_roundeven.c b/sysdeps/x86_64/fpu/multiarch/s_roundeven.c
> > > > new file mode 100644
> > > > index 0000000000..d92eda652a
> > > > --- /dev/null
> > > > +++ b/sysdeps/x86_64/fpu/multiarch/s_roundeven.c
> > > > @@ -0,0 +1,31 @@
> > > > +/* Multiple versions of __roundeven.
> > > > +   Copyright (C) 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/>.  */
> > > > +
> > > > +#include <libm-alias-double.h>
> > > > +
> > > > +#define roundeven __redirect_roundeven
> > > > +#define __roundeven __redirect___roundeven
> > > > +#include <math.h>
> > > > +#undef roundeven
> > > > +#undef __roundeven
> > > > +
> > > > +#define SYMBOL_NAME roundeven
> > > > +#include "ifunc-sse4_1.h"
> > > > +
> > > > +libc_ifunc_redirected (__redirect_roundeven, __roundeven, IFUNC_SELECTOR ());
> > > > +libm_alias_double (__roundeven, roundeven)
> > > > diff --git a/sysdeps/x86_64/fpu/multiarch/s_roundevenf-c.c b/sysdeps/x86_64/fpu/multiarch/s_roundevenf-c.c
> > > > new file mode 100644
> > > > index 0000000000..72a6e7d1fb
> > > > --- /dev/null
> > > > +++ b/sysdeps/x86_64/fpu/multiarch/s_roundevenf-c.c
> > > > @@ -0,0 +1,3 @@
> > > > +#undef __roundevenf
> > > > +#define __roundevenf __roundevenf_c
> > > > +#include <sysdeps/ieee754/flt-32/s_roundevenf.c>
> > > > diff --git a/sysdeps/x86_64/fpu/multiarch/s_roundevenf-sse4_1.S b/sysdeps/x86_64/fpu/multiarch/s_roundevenf-sse4_1.S
> > > > new file mode 100644
> > > > index 0000000000..a76e10807e
> > > > --- /dev/null
> > > > +++ b/sysdeps/x86_64/fpu/multiarch/s_roundevenf-sse4_1.S
> > > > @@ -0,0 +1,24 @@
> > > > +/* Copyright (C) 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/>.  */
> > > > +
> > > > +#include <sysdep.h>
> > > > +
> > > > +       .section .text.sse4.1,"ax",@progbits
> > > > +ENTRY(__roundevenf_sse41)
> > > > +       roundss $8, %xmm0, %xmm0
> > > > +       ret
> > > > +END(__roundevenf_sse41)
> > > > diff --git a/sysdeps/x86_64/fpu/multiarch/s_roundevenf.c b/sysdeps/x86_64/fpu/multiarch/s_roundevenf.c
> > > > new file mode 100644
> > > > index 0000000000..2ee196e68f
> > > > --- /dev/null
> > > > +++ b/sysdeps/x86_64/fpu/multiarch/s_roundevenf.c
> > > > @@ -0,0 +1,31 @@
> > > > +/* Multiple versions of __roundevenf.
> > > > +   Copyright (C) 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/>.  */
> > > > +
> > > > +#include <libm-alias-float.h>
> > > > +
> > > > +#define roundevenf __redirect_roundevenf
> > > > +#define __roundevenf __redirect___roundevenf
> > > > +#include <math.h>
> > > > +#undef roundevenf
> > > > +#undef __roundevenf
> > > > +
> > > > +#define SYMBOL_NAME roundevenf
> > > > +#include "ifunc-sse4_1.h"
> > > > +
> > > > +libc_ifunc_redirected (__redirect_roundevenf, __roundevenf, IFUNC_SELECTOR ());
> > > > +libm_alias_float (__roundeven, roundeven)
> > > > --
> > > > 2.31.1
> > > >
> > >
> > > I would like to backport this patch to release branches.
> > > Any comments or objections?
> > >
> > > --Sunil
> >
> > I would like to backport this patch to release branch 2.33.
> >
> > Any comments/suggestions or objections on this.
>
> Fine by me.
> >
> > commit 1683249d17e14827b6579529742eb895027dfa84
> > Author: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
> > Date:   Mon May 24 09:43:11 2021 +0800
> >
> >     x86_64: roundeven with sse4.1 support
> >
> >     This patch adds support for the sse4.1 hardware floating point
> >     roundeven.
> >
> >     Here is some benchmark results on my systems:

^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [PATCH v8 1/4] math: redirect roundeven function
  2022-09-23 10:49       ` 謝昇達(Shen-Ta Hsieh)
@ 2022-09-24  2:12         ` Sunil Pandey
  0 siblings, 0 replies; 8+ messages in thread
From: Sunil Pandey @ 2022-09-24  2:12 UTC (permalink / raw)
  To: 謝昇達(Shen-Ta Hsieh), Stefan Liebler, Wilco Dijkstra
  Cc: Noah Goldstein, H.J. Lu, Libc-stable Mailing List,
	Florian Weimer, GNU C Library

On Fri, Sep 23, 2022 at 3:50 AM 謝昇達(Shen-Ta Hsieh)
<ibmibmibm.tw@gmail.com> wrote:
>
> Fine by me, too
>
> Noah Goldstein <goldstein.w.n@gmail.com> 於 2022年9月14日 週三 上午9:25寫道:
> >
> > On Sun, Sep 11, 2022 at 12:57 PM Sunil Pandey via Libc-stable
> > <libc-stable@sourceware.org> wrote:
> > >
> > > On Wed, Jun 23, 2021 at 3:32 PM H.J. Lu via Libc-alpha
> > > <libc-alpha@sourceware.org> wrote:
> > > >
> > > > From: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
> > > >
> > > > This patch redirect roundeven function for futhermore changes.
> > > >
> > > > Signed-off-by: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
> > > > Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
> > > > ---
> > > >  include/math.h                             | 2 +-
> > > >  sysdeps/ieee754/dbl-64/s_roundeven.c       | 4 +++-
> > > >  sysdeps/ieee754/float128/s_roundevenf128.c | 1 +
> > > >  sysdeps/ieee754/flt-32/s_roundevenf.c      | 3 +++
> > > >  sysdeps/ieee754/ldbl-128/s_roundevenl.c    | 1 +
> > > >  sysdeps/ieee754/ldbl-96/s_roundevenl.c     | 1 +
> > > >  6 files changed, 10 insertions(+), 2 deletions(-)
> > > >
> > > > diff --git a/include/math.h b/include/math.h
> > > > index e1c2a4eb64..b4772d3d3b 100644
> > > > --- a/include/math.h
> > > > +++ b/include/math.h
> > > > @@ -38,7 +38,6 @@ libm_hidden_proto (__issignaling)
> > > >  libm_hidden_proto (__issignalingf)
> > > >  libm_hidden_proto (__exp)
> > > >  libm_hidden_proto (__expf)
> > > > -libm_hidden_proto (__roundeven)
> > > >
> > > >  #  if !defined __NO_LONG_DOUBLE_MATH \
> > > >        && __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 0
> > > > @@ -159,6 +158,7 @@ fabsf128 (_Float128 x)
> > > >  MATH_REDIRECT (sqrt, "__ieee754_", MATH_REDIRECT_UNARY_ARGS)
> > > >  MATH_REDIRECT (ceil, "__", MATH_REDIRECT_UNARY_ARGS)
> > > >  MATH_REDIRECT (floor, "__", MATH_REDIRECT_UNARY_ARGS)
> > > > +MATH_REDIRECT (roundeven, "__", MATH_REDIRECT_UNARY_ARGS)
> > > >  MATH_REDIRECT (rint, "__", MATH_REDIRECT_UNARY_ARGS)
> > > >  MATH_REDIRECT (trunc, "__", MATH_REDIRECT_UNARY_ARGS)
> > > >  MATH_REDIRECT (round, "__", MATH_REDIRECT_UNARY_ARGS)
> > > > diff --git a/sysdeps/ieee754/dbl-64/s_roundeven.c b/sysdeps/ieee754/dbl-64/s_roundeven.c
> > > > index 943b2c634c..5deff3bb8a 100644
> > > > --- a/sysdeps/ieee754/dbl-64/s_roundeven.c
> > > > +++ b/sysdeps/ieee754/dbl-64/s_roundeven.c
> > > > @@ -16,6 +16,7 @@
> > > >     License along with the GNU C Library; if not, see
> > > >     <https://www.gnu.org/licenses/>.  */
> > > >
> > > > +#define NO_MATH_REDIRECT
> > > >  #include <math.h>
> > > >  #include <math_private.h>
> > > >  #include <libm-alias-double.h>
> > > > @@ -66,5 +67,6 @@ __roundeven (double x)
> > > >    INSERT_WORDS64 (x, ix);
> > > >    return x;
> > > >  }
> > > > -hidden_def (__roundeven)
> > > > +#ifndef __roundeven
> > > >  libm_alias_double (__roundeven, roundeven)
> > > > +#endif
> > > > diff --git a/sysdeps/ieee754/float128/s_roundevenf128.c b/sysdeps/ieee754/float128/s_roundevenf128.c
> > > > index 5a9b3f395f..e0faf727f6 100644
> > > > --- a/sysdeps/ieee754/float128/s_roundevenf128.c
> > > > +++ b/sysdeps/ieee754/float128/s_roundevenf128.c
> > > > @@ -1,2 +1,3 @@
> > > > +#define NO_MATH_REDIRECT
> > > >  #include <float128_private.h>
> > > >  #include "../ldbl-128/s_roundevenl.c"
> > > > diff --git a/sysdeps/ieee754/flt-32/s_roundevenf.c b/sysdeps/ieee754/flt-32/s_roundevenf.c
> > > > index ae54365bbe..2cc0d7b001 100644
> > > > --- a/sysdeps/ieee754/flt-32/s_roundevenf.c
> > > > +++ b/sysdeps/ieee754/flt-32/s_roundevenf.c
> > > > @@ -17,6 +17,7 @@
> > > >     License along with the GNU C Library; if not, see
> > > >     <https://www.gnu.org/licenses/>.  */
> > > >
> > > > +#define NO_MATH_REDIRECT
> > > >  #include <math.h>
> > > >  #include <math_private.h>
> > > >  #include <libm-alias-float.h>
> > > > @@ -67,4 +68,6 @@ __roundevenf (float x)
> > > >    SET_FLOAT_WORD (x, ix);
> > > >    return x;
> > > >  }
> > > > +#ifndef __roundevenf
> > > >  libm_alias_float (__roundeven, roundeven)
> > > > +#endif
> > > > diff --git a/sysdeps/ieee754/ldbl-128/s_roundevenl.c b/sysdeps/ieee754/ldbl-128/s_roundevenl.c
> > > > index 02765be0e0..7c9c11fad2 100644
> > > > --- a/sysdeps/ieee754/ldbl-128/s_roundevenl.c
> > > > +++ b/sysdeps/ieee754/ldbl-128/s_roundevenl.c
> > > > @@ -17,6 +17,7 @@
> > > >     License along with the GNU C Library; if not, see
> > > >     <https://www.gnu.org/licenses/>.  */
> > > >
> > > > +#define NO_MATH_REDIRECT
> > > >  #include <math.h>
> > > >  #include <math_private.h>
> > > >  #include <libm-alias-ldouble.h>
> > > > diff --git a/sysdeps/ieee754/ldbl-96/s_roundevenl.c b/sysdeps/ieee754/ldbl-96/s_roundevenl.c
> > > > index 8340116ed8..f826829c31 100644
> > > > --- a/sysdeps/ieee754/ldbl-96/s_roundevenl.c
> > > > +++ b/sysdeps/ieee754/ldbl-96/s_roundevenl.c
> > > > @@ -17,6 +17,7 @@
> > > >     License along with the GNU C Library; if not, see
> > > >     <https://www.gnu.org/licenses/>.  */
> > > >
> > > > +#define NO_MATH_REDIRECT
> > > >  #include <math.h>
> > > >  #include <math_private.h>
> > > >  #include <libm-alias-ldouble.h>
> > > > --
> > > > 2.31.1
> > > >
> > >
> > > I would like to backport this patch to release branch 2.33.
> > >
> > > Any comments/suggestions or objections on this.
> > >
> > > commit 447954a206837b5f153869cfeeeab44631c3fac9
> > > Author: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
> > > Date:   Mon May 24 09:43:10 2021 +0800
> > >
> > >     math: redirect roundeven function
> > >
> > >     This patch redirect roundeven function for futhermore changes.
> > >
> > >     Signed-off-by: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
> > >     Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
> >
> > Fine by me.

Quick git grep shows that this patch has dependency on architectures other
than x86_64.

$ git log --grep roundeven --oneline

259a17cc98 s390x: Update math: redirect roundeven function
3213ed770c Update math: redirect roundeven function
eb9066203f Use GCC builtins for roundeven functions if desired.
1683249d17 x86_64: roundeven with sse4.1 support
447954a206 math: redirect roundeven function
6a86bc0992 AArch64: Add support for roundeven[f]

This may require backporting these patches to other architectures too,
 where build may potentially break.

Not sure if other architecture owners like to backport these patches to 2.33.

^ permalink raw reply	[flat|nested] 8+ messages in thread

end of thread, other threads:[~2022-09-24  2:12 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
     [not found] <20210623222846.2162301-1-hjl.tools@gmail.com>
     [not found] ` <20210623222846.2162301-4-hjl.tools@gmail.com>
2022-04-28  0:11   ` [PATCH v8 3/4] x86_64: roundeven with sse4.1 support Sunil Pandey
2022-09-11 20:08     ` Sunil Pandey
2022-09-14  1:25       ` Noah Goldstein
2022-09-23 10:50         ` 謝昇達(Shen-Ta Hsieh)
     [not found] ` <20210623222846.2162301-2-hjl.tools@gmail.com>
2022-09-11 19:56   ` [PATCH v8 1/4] math: redirect roundeven function Sunil Pandey
2022-09-14  1:25     ` Noah Goldstein
2022-09-23 10:49       ` 謝昇達(Shen-Ta Hsieh)
2022-09-24  2:12         ` Sunil Pandey

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).