[Bug middle-end/82694] [8 regression] Linux kernel miscompiled since r250765

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82694

--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
Note though that there were _many_ foldings not properly guarded by
POINTER_TYPE_OVERFLOW_UNDEFINED.  I'd rather fold that into
TYPE_OVERFLOW_UNDEFINED / TYPE_OVERFLOW_WRAPS anyway (thus also allow those on
pointer types).