Remove x86_64 __GNUC_PREREQ (4, 6) conditional.

This patch removes a conditional on __GNUC_PREREQ (4, 6) in x86_64
code.

Tested for x86_64 that installed shared libraries are unchanged by
this patch.  Committed (I think this file reasonably comes under math
maintainership).

	* sysdeps/x86_64/fpu/dla.h [__FMA4__ && __GNUC_PREREQ (4, 6)]
	(DLA_FMS): Make definition conditional only on [__FMA4__].
	[__FMA4__ && !__GNUC_PREREQ (4, 6)] (DLA_FMS): Remove conditional
	definition.

diff --git a/ChangeLog b/ChangeLog
index f84b92e..c8bf783 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 2014-11-14  Joseph Myers  <joseph@codesourcery.com>
 
+       * sysdeps/x86_64/fpu/dla.h [__FMA4__ && __GNUC_PREREQ (4, 6)]
+       (DLA_FMS): Make definition conditional only on [__FMA4__].
+       [__FMA4__ && !__GNUC_PREREQ (4, 6)] (DLA_FMS): Remove conditional
+       definition.
+
        * sysdeps/arm/sysdep.h [PROF && __GNUC_PREREQ(4,4)] (CALL_MCOUNT):
        Make definition conditional only on [PROF].
        [PROF && !__GNUC_PREREQ(4,4)] (CALL_MCOUNT): Remove conditional

diff --git a/sysdeps/x86_64/fpu/dla.h b/sysdeps/x86_64/fpu/dla.h
index fa2d52b..688efa0 100644 (file)
--- a/sysdeps/x86_64/fpu/dla.h
+++ b/sysdeps/x86_64/fpu/dla.h
@@ -1,17 +1,8 @@
 #include <features.h>
 
 #ifdef __FMA4__
-# if __GNUC_PREREQ (4, 6)
-#  define DLA_FMS(x,y,z) \
+# define DLA_FMS(x,y,z) \
   __builtin_fma (x, y, -(z))
-# else
-#  define DLA_FMS(x,y,z) \
-  ({ double __z;                                                             \
-     asm ("vfmsubsd %3, %2, %1, %0"                                          \
-         : "=x" (__z)                                                        \
-         : "x" ((double) (x)), "xm" ((double) (y)) , "x" ((double) (z)));    \
-    __z; })
-# endif
 #endif
 
 #include "sysdeps/ieee754/dbl-64/dla.h"