https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106506
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2022-08-10
Status|UNCONFIRMED |ASSIGNED
Ever confirmed|0 |1
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 53431
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53431&action=edit
gcc13-pr106506.patch
Those 2 checks were just trying to be careful, the (phires & 1) == phires and
variants it is folded to of course make only sense for the -1/0/1/2 result
spaceship, for -1/0/1 one can just use comparisons of phires. We only floating
point spaceship if nans aren't honored, so the 2 case is ignored, and if it is,
with Aldy's changes we can simplify the 2 case away from the phi but the
(phires & 1) == phires stayed. It is safe to treat the phires comparison as
phires >= 0 even then.
