[Bug rtl-optimization/46602] New: [4.6 Regression] gcc.dg/pr42245-2.c ICE on ia64

[amonakov at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46602

           Summary: [4.6 Regression] gcc.dg/pr42245-2.c ICE on ia64
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
        AssignedTo: amona...@gcc.gnu.org
        ReportedBy: amona...@gcc.gnu.org
                CC: hjl.to...@gmail.com
            Target: ia64-linux


Introduced with r166697, my fix for PR 46204.  I'm testing the following patch.

Index: gcc/sel-sched-ir.c
===================================================================
--- gcc/sel-sched-ir.c    (revision 167024)
+++ gcc/sel-sched-ir.c    (working copy)
@@ -3650,10 +3650,6 @@
       remove_empty_bb (bb, true);
     }

-#ifdef ENABLE_CHECKING
-  verify_backedges ();
-#endif
-
   return true;
 }

@@ -3735,6 +3731,11 @@
       if (recompute_toporder_p)
     sel_recompute_toporder ();
     }
+
+#ifdef ENABLE_CHECKING
+  verify_backedges ();
+#endif
+
   return changed;
 }