[PATCH] Add a barrier in the double fma implementation

[Andreas Schwab]

Aurelien Jarno <aurelien@aurel32.net> writes:

> --- a/sysdeps/ieee754/dbl-64/s_fma.c
> +++ b/sysdeps/ieee754/dbl-64/s_fma.c
> @@ -174,6 +174,8 @@
>        if ((u.ieee.mantissa1 & 1) == 0)
>  	u.ieee.mantissa1 |= libc_fetestexcept (FE_INEXACT) != 0;
>        v.d = a1 + u.d;
> +      /* Ensure the addition is not scheduled after fetestexcept call.  */
> +      asm volatile ("" : : "m" (v));
         math_force_eval (v.d);

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
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