https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124180
--- Comment #12 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #11)
> (In reply to Richard Biener from comment #8)
> ...
> RVV supports same size, double size and half size conversions. I expect
> SVE to do the same, so arbitrary conversion optabs might be unneeded but
> then if-conversion might need to put inbetween conversions in and
> possibly pre-select between cond_{unpack,pack,}_fix{uns,} given it performs
> a (premature) vectorization check on the chosen IFN.
We do support those as well indeed. I was thinking that one option would be
for ifcvt to generate the cond_ IFN regardless of target support and then we
have vectorizable_conversion use this as more of a hint that we want a
conversion but it still has to figure out if the target supports masking and to
which size.
This would perhaps allow us not to have to duplicate the logic into ifcvt and
still only deal with it in vectorizable_conversion?
