On Thu, Aug 25, 2022 at 03:23:12PM -0400, Michael Meissner wrote:
> On Mon, Aug 15, 2022 at 12:12:02PM +0200, Jakub Jelinek via Gcc-patches wrote:
> > Hi!
> >
> > The following patch implements a new builtin, __builtin_issignaling,
> > which can be used to implement the ISO/IEC TS 18661-1 issignaling
> > macro.
>
> I haven't looked in detail at the patch, but from the description I think it
> needs a way for machine dependent parts to optimize this for a given mode when
> various switches are used.
There is an optab which takes priority over the generic code.
So if you have something better than the generic expansion, feel free to add
the named pattern(s).
Currently it is used just on x86 for xf mode.
Jakub
