https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65177
--- Comment #16 from Sebastian Pop <spop at gcc dot gnu.org> --- Created attachment 35030 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35030&action=edit IR before and after for failing FSM jump thread After updating the sources of GCC, I now see the fail as Jakub has reported at dbgctr=199. The difference between 198 and 199 is this jump thread path: FSM jump thread: (13, 53) incoming edge; (53, 55) (55, 64) (64, 66) (66, 67) (67, 68) (68, 69) (69, 95) (95, 94) (94, 5) nocopy; (94, 5) The attached file is a dump of the IR just before and after SEME code generation of this path.