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Add x86-32 FMA support

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This commit is contained in:
H.J. Lu 2010-04-14 22:27:59 -07:00 committed by Ulrich Drepper
parent df87f54923
commit a11ec63713
11 changed files with 190 additions and 36 deletions
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11
ChangeLog
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@ -1,5 +1,16 @@
2010-04-14 H.J. Lu <hongjiu.lu@intel.com>
* sysdeps/x86_64/elf/configure.in: Move AVX test to ....
* sysdeps/i386/configure.in: ...here.
* sysdeps/i386/i686/multiarch/Makefile (libm-sysdep_routines): Define.
(CFLAGS-s_fma-fma.c): Define.
(CFLAGS-s_fmaf-fma.c): Define.
* sysdeps/i386/i686/multiarch/Versions: New file.
* sysdeps/i386/i686/multiarch/s_fma-fma.c: New file.
* sysdeps/i386/i686/multiarch/s_fma.c: New file.
* sysdeps/i386/i686/multiarch/s_fmaf-fma.c: New file.
* sysdeps/i386/i686/multiarch/s_fmaf.c: New file.
* sysdeps/x86_64/multiarch/memcmp-sse4.S: Check
DATA_CACHE_SIZE_HALF instead of SHARED_CACHE_SIZE_HALF.

25
sysdeps/i386/configure vendored
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@ -656,3 +656,28 @@ fi
fi
{ $as_echo "$as_me:$LINENO: result: $libc_cv_as_i686" >&5
$as_echo "$libc_cv_as_i686" >&6; }
{ $as_echo "$as_me:$LINENO: checking for AVX support" >&5
$as_echo_n "checking for AVX support... " >&6; }
if test "${libc_cv_cc_avx+set}" = set; then
$as_echo_n "(cached) " >&6
else
if { ac_try='${CC-cc} -mavx -xc /dev/null -S -o /dev/null'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
$as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then
libc_cv_cc_avx=yes
else
libc_cv_cc_avx=no
fi
fi
{ $as_echo "$as_me:$LINENO: result: $libc_cv_cc_avx" >&5
$as_echo "$libc_cv_cc_avx" >&6; }
if test $libc_cv_cc_avx = yes; then
cat >>confdefs.h <<\_ACEOF
#define HAVE_AVX_SUPPORT 1
_ACEOF
fi

11
sysdeps/i386/configure.in
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@ -55,3 +55,14 @@ if AC_TRY_COMMAND([${CC-cc} -Wa,-mtune=i686 -xc /dev/null -S -o /dev/null]); the
else
libc_cv_as_i686=no
fi])
dnl Check if -mavx works.
AC_CACHE_CHECK(for AVX support, libc_cv_cc_avx, [dnl
if AC_TRY_COMMAND([${CC-cc} -mavx -xc /dev/null -S -o /dev/null]); then
libc_cv_cc_avx=yes
else
libc_cv_cc_avx=no
fi])
if test $libc_cv_cc_avx = yes; then
AC_DEFINE(HAVE_AVX_SUPPORT)
fi

6
sysdeps/i386/i686/multiarch/Makefile
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@ -19,3 +19,9 @@ CFLAGS-strstr.c += -msse4
CFLAGS-strcasestr.c += -msse4
endif
endif
ifeq (mathyes,$(subdir)$(config-cflags-avx))
libm-sysdep_routines += s_fma-fma s_fmaf-fma
CFLAGS-s_fma-fma.c += -mavx -mfpmath=sse
CFLAGS-s_fmaf-fma.c += -mavx -mfpmath=sse
endif

5
sysdeps/i386/i686/multiarch/Versions Normal file
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@ -0,0 +1,5 @@
libc {
GLIBC_PRIVATE {
__get_cpu_features;
}
}

30
sysdeps/i386/i686/multiarch/s_fma-fma.c Normal file
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@ -0,0 +1,30 @@
/* FMA version of fma.
Copyright (C) 2010 Free Software Foundation, Inc.
Contributed by Intel Corporation.
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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <config.h>
#ifdef HAVE_AVX_SUPPORT
double
__fma_fma (double x, double y, double z)
{
asm ("vfmadd213sd %3, %2, %0" : "=x" (x) : "0" (x), "x" (y), "xm" (z));
return x;
}
#endif

36
sysdeps/i386/i686/multiarch/s_fma.c Normal file
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@ -0,0 +1,36 @@
/* Multiple versions of fma.
Copyright (C) 2010 Free Software Foundation, Inc.
Contributed by Intel Corporation.
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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <config.h>
#ifdef HAVE_AVX_SUPPORT
#include <math.h>
#include <init-arch.h>
extern double __fma_ia32 (double x, double y, double z) attribute_hidden;
extern double __fma_fma (double x, double y, double z) attribute_hidden;
libm_ifunc (__fma, HAS_FMA ? __fma_fma : __fma_ia32);
weak_alias (__fma, fma)
# define __fma __fma_ia32
#endif
#include <math/s_fma.c>

30
sysdeps/i386/i686/multiarch/s_fmaf-fma.c Normal file
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@ -0,0 +1,30 @@
/* FMA version of fmaf.
Copyright (C) 2010 Free Software Foundation, Inc.
Contributed by Intel Corporation.
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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <config.h>
#ifdef HAVE_AVX_SUPPORT
float
__fmaf_fma (float x, float y, float z)
{
asm ("vfmadd213ss %3, %2, %0" : "=x" (x) : "0" (x), "x" (y), "xm" (z));
return x;
}
#endif

36
sysdeps/i386/i686/multiarch/s_fmaf.c Normal file
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@ -0,0 +1,36 @@
/* Multiple versions of fmaf.
Copyright (C) 2010 Free Software Foundation, Inc.
Contributed by Intel Corporation.
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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <config.h>
#ifdef HAVE_AVX_SUPPORT
#include <math.h>
#include <init-arch.h>
extern float __fmaf_ia32 (float x, float y, float z) attribute_hidden;
extern float __fmaf_fma (float x, float y, float z) attribute_hidden;
libm_ifunc (__fmaf, HAS_FMA ? __fmaf_fma : __fmaf_ia32);
weak_alias (__fmaf, fmaf)
# define __fmaf __fmaf_ia32
#endif
#include <math/s_fmaf.c>

25
sysdeps/x86_64/elf/configure vendored
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@ -47,28 +47,3 @@ cat >>confdefs.h <<\_ACEOF
#define PI_STATIC_AND_HIDDEN 1
_ACEOF
{ $as_echo "$as_me:$LINENO: checking for AVX support" >&5
$as_echo_n "checking for AVX support... " >&6; }
if test "${libc_cv_cc_avx+set}" = set; then
$as_echo_n "(cached) " >&6
else
if { ac_try='${CC-cc} -mavx -xc /dev/null -S -o /dev/null'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
$as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then
libc_cv_cc_avx=yes
else
libc_cv_cc_avx=no
fi
fi
{ $as_echo "$as_me:$LINENO: result: $libc_cv_cc_avx" >&5
$as_echo "$libc_cv_cc_avx" >&6; }
if test $libc_cv_cc_avx = yes; then
cat >>confdefs.h <<\_ACEOF
#define HAVE_AVX_SUPPORT 1
_ACEOF
fi

11
sysdeps/x86_64/elf/configure.in
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@ -32,14 +32,3 @@ fi
dnl It is always possible to access static and hidden symbols in an
dnl position independent way.
AC_DEFINE(PI_STATIC_AND_HIDDEN)
dnl Check if -mavx works.
AC_CACHE_CHECK(for AVX support, libc_cv_cc_avx, [dnl
if AC_TRY_COMMAND([${CC-cc} -mavx -xc /dev/null -S -o /dev/null]); then
libc_cv_cc_avx=yes
else
libc_cv_cc_avx=no
fi])
if test $libc_cv_cc_avx = yes; then
AC_DEFINE(HAVE_AVX_SUPPORT)
fi