[Bug rtl-optimization/108463] [13 Regression] ICE: in cselib_subst_to_values, at cselib.cc:2148 with -O2 -fsched2-use-superblocks -g

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108463

--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Note, we already distinguish between n_useless_values and
n_useless_debug_values:
  if (had_locs && cselib_useless_value_p (v))
    {
      if (setting_insn && DEBUG_INSN_P (setting_insn))
        n_useless_debug_values++;
      else
        n_useless_values++;
      values_became_useless = 1;
    }
so the important thing is find out which value created only in the -g case
didn't get marked with setting_insn && DEBUG_INSN_P (setting_insn).