> Generically, each iteration of the compare-and-exchange loop should be as
> if the previous iterations hadn't happened, so restoring all the previous
> FP state is right in that sense.
I see.
> With regard to the implementation, the insn patterns for the SPARC
> builtins should specify that the
On Thu, 5 Dec 2013, Eric Botcazou wrote:
> > Note that you could probably just reload the tmp1_var value rather than
> > needing to store the fsr value again to clear exceptions from it, unless
> > there's an architecture-specific reason the tmp1_var value might no longer
> > be the right value to
> Note that you could probably just reload the tmp1_var value rather than
> needing to store the fsr value again to clear exceptions from it, unless
> there's an architecture-specific reason the tmp1_var value might no longer
> be the right value to load to clear exceptions. (This is what x86 does
On Thu, 5 Dec 2013, Eric Botcazou wrote:
> + /* We generate the equivalent of feclearexcept (FE_ALL_EXCEPT):
> +
> + unsigned int tmp2_var;
> + __builtin_store_fsr (&tmp2_var);
> +
> + tmp2_var &= ~accrued_exception_mask;
> +
> + __builtin_load_fsr (&tmp2_var); */
Note t
