dist/gcc/sel-sched.c

2926       /* We may encounter valid av_set not only on bb_head, but also on
5932   insn_t bb_head, bb_end, bb_next, in_next;
5935   bb_head = sel_bb_head (bb);
5938   if (bb_head == bb_end)
5941   while (bb_head != bb_end && DEBUG_INSN_P (bb_head))
5942     bb_head = NEXT_INSN (bb_head);
5944   if (bb_head == bb_end)
5947   while (bb_head != bb_end && DEBUG_INSN_P (bb_end))
5950   if (bb_head == bb_end)
5953   bb_next = NEXT_INSN (bb_head);
6599      bb_note, if original insn was a bb_head) or to the bb_end.  */
6608       /* Add bb tail to PATH (but it doesn't make any sense if it's a bb_head -