[Bug rtl-optimization/56023] [4.6 Regression]: [alpha] -fcompare-debug failure due to sched1 pass

[ubizjak at gmail dot com]

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.