So, to me this looks like a backend bug, using dead_or_set_p in a splitter when the split passes don't really compute the note problem. Seems s390 is the only backend that does this, other backends use dead_or_set_p either only in peephole2s (which is fine, peephole2 pass starts with df_set_flags (DF_LR_RUN_DCE); df_note_add_problem (); df_analyze (); and even when many targets don't use df_or_set_p, they do use peep2_dead*), or (cris) in delayed branch scheduling (I believe that doesn't guarantee that either). Can't what you are doing in the splitters be done in define_peephole2 instead?
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1811798 Title: gcc 8 miscompiles scipy/optimize/minpack/qrsolv.f To manage notifications about this bug go to: https://bugs.launchpad.net/gcc/+bug/1811798/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
