https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117424
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2024-11-03
Ever confirmed|0 |1
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Sam James from comment #2)
> I'm not confident about the evaluation order in m.
Change it to be:
int b = 0;
int n = g(f, &b);
and it still fails.
But I think the issue is around:
for (; e(c + 77) + c - 836 + i < 2; i++)
for (; m(c - 5);)
But even the call to m.
-fwrapv seems to fixes the issue.
So does `-fno-tree-vrp` (and -fdisable-tree-evrp -fdisable-tree-vrp1).
So does `-fno-tree-vectorize`.
Note with -fno-tree-vrp the vectorized IR looks the same except for the side
storage of the loop bounds which might be the issue ...
