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Remove x86_64 __GNUC_PREREQ (4, 6) conditional
- From: Joseph Myers <joseph at codesourcery dot com>
- To: <libc-alpha at sourceware dot org>
- Date: Fri, 14 Nov 2014 18:53:47 +0000
- Subject: Remove x86_64 __GNUC_PREREQ (4, 6) conditional
- Authentication-results: sourceware.org; auth=none
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).
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.
diff --git a/sysdeps/x86_64/fpu/dla.h b/sysdeps/x86_64/fpu/dla.h
index fa2d52b..688efa0 100644
--- 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"
--
Joseph S. Myers
joseph@codesourcery.com