https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67657
--- Comment #3 from Oleg Endo <olegendo at gcc dot gnu.org> --- (In reply to Kazumoto Kojima from comment #2) > Created attachment 36356 [details] > reduced test case > > I can reproduce it with trunk rev. 227929 but can't with 227887. > Clearly very fragile. > ... > into the insn 2292. Oleg, could you take a look? Hm .. the peephole looks OK, but maybe emit_move_insn doesn't handle post-inc properly and thus expands into the parallel. I'll have a look.