https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85409
--- Comment #3 from Andrey Belevantsev <abel at gcc dot gnu.org> ---
This one is cool. We hit an assert saying we cannot hold of successor info
anymore. The succs vector size is of max_ws (maximum lookahead) + 1, but guess
what, there's a lot of debug insns and these are not counted against windowsize
when computing the availability set because of:
2949 if (DEBUG_INSN_P (last_insn))
2950 continue;
2951
2952 if (end_ws > max_ws)
2953 {
2954 /* We can reach max lookahead size at bb_header, so clean av_set
2955 first. */
2956 INSN_WS_LEVEL (last_insn) = global_level;
2957
2958 if (sched_verbose >= 6)
2959 sel_print ("Insn %d is beyond the software lookahead window
size\n",
2960 INSN_UID (last_insn));
2961 break;
2962 }
2963
2964 end_ws++;
Thoughts?
