Merge changes between r15223 and r15532 from /fsf/trunk.

git-svn-id: svn://svn.eglibc.org/trunk@15545 7b3dc134-2b1b-0410-93df-9e9f96275f8d

1 files changed, 58 insertions, 0 deletions

diff --git a/libc/sysdeps/x86_64/fpu/multiarch/s_fmaf.c b/libc/sysdeps/x86_64/fpu/multiarch/s_fmaf.c
new file mode 100644
index 000000000..0dcf273ea
--- /dev/null
+++ b/libc/sysdeps/x86_64/fpu/multiarch/s_fmaf.c
@@ -0,0 +1,58 @@
+/* FMA version of fmaf.
+   Copyright (C) 2009, 2010, 2011 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA. */
+
+#include <config.h>
+#include <math.h>
+#include <init-arch.h>
+
+#ifdef HAVE_AVX_SUPPORT
+
+extern float __fmaf_sse2 (float x, float y, float z) attribute_hidden;
+
+
+static float
+__fmaf_fma3 (float x, float y, float z)
+{
+  asm ("vfmadd213ss %3, %2, %0" : "=x" (x) : "0" (x), "x" (y), "xm" (z));
+  return x;
+}
+
+
+# ifdef HAVE_FMA4_SUPPORT
+static float
+__fmaf_fma4 (float x, float y, float z)
+{
+  asm ("vfmaddss %3, %2, %1, %0" : "=x" (x) : "x" (x), "xm" (y), "xm" (z));
+  return x;
+}
+# else
+#  undef HAS_FMA4
+#  define HAS_FMA4 0
+#  define __fmaf_fma4 ((void *) 0)
+# endif
+
+
+libm_ifunc (__fmaf, HAS_FMA
+	    ? __fmaf_fma3 : (HAS_FMA4 ? __fmaf_fma4 : __fmaf_sse2));
+weak_alias (__fmaf, fmaf)
+
+# define __fmaf __fmaf_sse2
+#endif
+
+#include <sysdeps/ieee754/dbl-64/s_fmaf.c>