https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120443
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |needs-bisection, wrong-code
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
Last reconfirmed| |2025-05-27
Target| |x86_64-*-*
Target Milestone|--- |16.0
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. unswitching seems to at least trigger it:
> ./xgcc -B. t.c -O2 -fopt-info -funswitch-loops
t.c:30:14: optimized: Inlined d.constprop/9 into main/7 which now has time
57.004369 and size 31, net change of -8.
t.c:16:8: optimized: unswitching loop 1 on ‘if’ with condition: a.0_7 != -7
> ./a.out
-227068033
note I made 'd' static, making it noipa no longer reproduces the issue.
