https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107088
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2022-09-29
CC| |rguenth at gcc dot gnu.org,
| |rsandifo at gcc dot gnu.org
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
#3 0x0000000000cbc4a3 in new_cselib_val (hash=6, mode=E_BImode,
x=0x7ffff7170a98) at /home/rguenther/src/gcc2/gcc/cselib.cc:1579
1579 FOR_EACH_MODE_UNTIL (narrow_mode_iter, int_mode)
(gdb) p int_mode
$2 = BImode
but class_narrowest_mode is QImode, so we iterate until OImode which
doesn't have a wider mode (so VOIDmode) but never reach BImode.
Somehow BImode is MODE_INT but declared BOOL_MODE which means we skip it here.
Not sure if that's an error in genmodes - I suspect other places
wouldn't expect to iterate over BImode in FOR_EACH_MODE_UNTIL.
