* predict.c (predict_loops): Do not predict infinite loops.

From-SVN: r193101

gcc/ChangeLog

 2012-11-02  Jan Hubicka  <jh@suse.cz>
 
+	* predict.c (predict_loops): Do not predict infinite loops.
+
+2012-11-02  Jan Hubicka  <jh@suse.cz>
+
 	PR middle-end/55079
 	* tree-ssa-loop-niter.c (number_of_iterations_exit): Update
 	MAX field if NITER was folded to contant.

gcc/predict.c

@@ -1403,6 +1403,11 @@ predict_loops (void)
 
       exits = get_loop_exit_edges (loop);
       n_exits = VEC_length (edge, exits);
+      if (!n_exits)
+	{
+          VEC_free (edge, heap, exits);
+	  continue;
+	}
 
       FOR_EACH_VEC_ELT (edge, exits, j, ex)
 	{