[Bug debug/56950] compare-debug failure for gcc.dg/pr41345.c with fschedule-insns

[steven at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56950



--- Comment #2 from Steven Bosscher <steven at gcc dot gnu.org> 2013-04-14 
15:09:20 UTC ---

I am testing this fix:



Index: haifa-sched.c

===================================================================

--- haifa-sched.c       (revision 197942)

+++ haifa-sched.c       (working copy)

@@ -7431,14 +7431,14 @@ sched_extend_bb (void)



   /* The following is done to keep current_sched_info->next_tail non null.  */

   insn = BB_END (EXIT_BLOCK_PTR->prev_bb);

-  if (NEXT_INSN (insn) == 0

+  if (next_nondebug_insn (insn) == 0

       || (!NOTE_P (insn)

          && !LABEL_P (insn)

          /* Don't emit a NOTE if it would end up before a BARRIER.  */

          && !BARRIER_P (NEXT_INSN (insn))))

     { 

       rtx note = emit_note_after (NOTE_INSN_DELETED, insn);

-      /* Make insn appear outside BB.  */

+      /* Make note appear outside BB.  */

       set_block_for_insn (note, NULL);

       BB_END (EXIT_BLOCK_PTR->prev_bb) = insn;

     }