http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56023
--- Comment #9 from Uros Bizjak <ubizjak at gmail dot com> 2013-01-19 19:46:12 UTC --- Following patch fixes bootstrap comparison failure: --cut here-- Index: haifa-sched.c =================================================================== --- haifa-sched.c (revision 195276) +++ haifa-sched.c (working copy) @@ -3684,6 +3684,9 @@ fix_inter_tick (rtx head, rtx tail) INSN_TICK (head) = tick; } + if (DEBUG_INSN_P (head)) + continue; + FOR_EACH_DEP (head, SD_LIST_RES_FORW, sd_it, dep) { rtx next; --cut here-- We should not update tick status of instructions, dependent on debug insn.