https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104543
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Last reconfirmed| |2022-02-15 Ever confirmed|0 |1 Status|UNCONFIRMED |NEW --- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Confirmed. >From what I could tell it is the unroll and jam pass which is messing up. -fno-loop-unroll-and-jam <bb 5> [local count: 542102826]: # c.4_21 = PHI <0(7), _9(23)> _7 = a[c.4_21]; _8 = _7 ^ 1; a[c.4_21] = _8; _9 = c.4_21 + 1; _11 = b_lsm.13_13 + 1; if (_11 <= 2) goto <bb 22>; [83.33%] else goto <bb 8>; [16.67%] <bb 22> [local count: 451752355]: a[c.4_21] = _7;