From a11ec63713ea3903c482dc907a108be404191a02 Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Wed, 14 Apr 2010 22:27:59 -0700 Subject: Add x86-32 FMA support --- sysdeps/i386/configure | 25 ++++++++++++++++++++++ sysdeps/i386/configure.in | 11 ++++++++++ sysdeps/i386/i686/multiarch/Makefile | 6 ++++++ sysdeps/i386/i686/multiarch/Versions | 5 +++++ sysdeps/i386/i686/multiarch/s_fma-fma.c | 30 ++++++++++++++++++++++++++ sysdeps/i386/i686/multiarch/s_fma.c | 36 ++++++++++++++++++++++++++++++++ sysdeps/i386/i686/multiarch/s_fmaf-fma.c | 30 ++++++++++++++++++++++++++ sysdeps/i386/i686/multiarch/s_fmaf.c | 36 ++++++++++++++++++++++++++++++++ 8 files changed, 179 insertions(+) create mode 100644 sysdeps/i386/i686/multiarch/Versions create mode 100644 sysdeps/i386/i686/multiarch/s_fma-fma.c create mode 100644 sysdeps/i386/i686/multiarch/s_fma.c create mode 100644 sysdeps/i386/i686/multiarch/s_fmaf-fma.c create mode 100644 sysdeps/i386/i686/multiarch/s_fmaf.c (limited to 'sysdeps/i386') diff --git a/sysdeps/i386/configure b/sysdeps/i386/configure index 7814b3b313..21225cd9c9 100644 --- a/sysdeps/i386/configure +++ b/sysdeps/i386/configure @@ -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 $libc_cv_cc_avx = yes; then + cat >>confdefs.h <<\_ACEOF +#define HAVE_AVX_SUPPORT 1 +_ACEOF + +fi diff --git a/sysdeps/i386/configure.in b/sysdeps/i386/configure.in index 9fc7fa59fe..d8dd648f80 100644 --- a/sysdeps/i386/configure.in +++ b/sysdeps/i386/configure.in @@ -55,3 +55,14 @@ if AC_TRY_COMMAND([${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 $libc_cv_cc_avx = yes; then + AC_DEFINE(HAVE_AVX_SUPPORT) +fi diff --git a/sysdeps/i386/i686/multiarch/Makefile b/sysdeps/i386/i686/multiarch/Makefile index e8847d6fc4..124595068d 100644 --- a/sysdeps/i386/i686/multiarch/Makefile +++ b/sysdeps/i386/i686/multiarch/Makefile @@ -19,3 +19,9 @@ CFLAGS-strstr.c += -msse4 CFLAGS-strcasestr.c += -msse4 endif endif + +ifeq (mathyes,$(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 diff --git a/sysdeps/i386/i686/multiarch/Versions b/sysdeps/i386/i686/multiarch/Versions new file mode 100644 index 0000000000..59b185ac8d --- /dev/null +++ b/sysdeps/i386/i686/multiarch/Versions @@ -0,0 +1,5 @@ +libc { + GLIBC_PRIVATE { + __get_cpu_features; + } +} diff --git a/sysdeps/i386/i686/multiarch/s_fma-fma.c b/sysdeps/i386/i686/multiarch/s_fma-fma.c new file mode 100644 index 0000000000..e6f77aec77 --- /dev/null +++ b/sysdeps/i386/i686/multiarch/s_fma-fma.c @@ -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 + +#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 diff --git a/sysdeps/i386/i686/multiarch/s_fma.c b/sysdeps/i386/i686/multiarch/s_fma.c new file mode 100644 index 0000000000..d9291b0be8 --- /dev/null +++ b/sysdeps/i386/i686/multiarch/s_fma.c @@ -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 + +#ifdef HAVE_AVX_SUPPORT +#include +#include + +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 diff --git a/sysdeps/i386/i686/multiarch/s_fmaf-fma.c b/sysdeps/i386/i686/multiarch/s_fmaf-fma.c new file mode 100644 index 0000000000..887e9c3829 --- /dev/null +++ b/sysdeps/i386/i686/multiarch/s_fmaf-fma.c @@ -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 + +#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 diff --git a/sysdeps/i386/i686/multiarch/s_fmaf.c b/sysdeps/i386/i686/multiarch/s_fmaf.c new file mode 100644 index 0000000000..4ea9be48ac --- /dev/null +++ b/sysdeps/i386/i686/multiarch/s_fmaf.c @@ -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 + +#ifdef HAVE_AVX_SUPPORT +#include +#include + +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 -- cgit v1.2.3