2011-10-24 Ulrich Drepper <drepper@gmail.com>
+ * sysdeps/x86_64/dla.h (DLA_FMS): Some compilers fail to inline
+ __builtin_fma in some situations. Have to use an asm.
+
* config.make.in: Add have-mfma4 entry.
* configure.in: Substitute libc_cv_cc_fma4.
* math/Makefile (dbl-only-routines): Add sincostab.
-#if defined __FMA4__ || defined __FMA__
+#ifdef __FMA4__
# define DLA_FMS(x,y,z) \
- __builtin_fma (x, y, -z)
+ ({ double __z; \
+ asm ("vfmsubsd %3, %2, %1, %0" \
+ : "=x" (__z) \
+ : "x" ((double) (x)), "xm" ((double) (y)) , "x" ((double) (z))); \
+ __z; })
#endif
#include "sysdeps/ieee754/dbl-64/dla.h"