re PR rtl-optimization/46602 (gcc.dg/pr42245-2.c ICE on ia64)

	PR rtl-optimization/46602
	* sel-sched-ir.c (maybe_tidy_empty_bb): Move checking ...
	(tidy_control_flow): Here.

From-SVN: r167140

gcc/ChangeLog

+2010-11-25  Alexander Monakov  <amonakov@ispras.ru>
+
+	PR rtl-optimization/46602
+	* sel-sched-ir.c (maybe_tidy_empty_bb): Move checking ...
+	(tidy_control_flow): Here.
+
 2010-11-25  Joern Rennecke  <amylaar@spamcop.net>
 	    Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
 

gcc/sel-sched-ir.c

@@ -3650,10 +3650,6 @@ maybe_tidy_empty_bb (basic_block bb)
       remove_empty_bb (bb, true);
     }
 
-#ifdef ENABLE_CHECKING
-  verify_backedges ();
-#endif
-
   return true;
 }
 
@@ -3735,6 +3731,11 @@ tidy_control_flow (basic_block xbb, bool full_tidying)
       if (recompute_toporder_p)
 	sel_recompute_toporder ();
     }
+
+#ifdef ENABLE_CHECKING
+  verify_backedges ();
+#endif
+
   return changed;
 }