[Bug c/102989] Implement C2x's n2763 (_BitInt)

[jakub at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102989

--- Comment #19 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Segher Boessenkool from comment #16)
> (In reply to Jakub Jelinek from comment #15)
> > PowerPC I think does, not sure about s390.
> 
> Does what?

Published psABI which ought to specify how to pass/return _BitInt(N) and
unsigned _BitInt(N).