re PR tree-optimization/17560 (Infinite recursion in tree-scalar-evolution with -Os)

	PR tree-optimization/17560
	* predict.c (tree_estimate_probability): Mark irreducible
	loops.

From-SVN: r89145

gcc/ChangeLog

 2004-10-16  Zdenek Dvorak  <dvorakz@suse.cz>
 
+	PR tree-optimization/17560
+	* predict.c (tree_estimate_probability): Mark irreducible
+	loops.
+
+2004-10-16  Zdenek Dvorak  <dvorakz@suse.cz>
+
 	PR rtl-optimization/17723
 	* cfgcleanup.c (merge_memattrs): Handle case when
 	MEM_SIZE == NULL_RTX.

gcc/predict.c

@@ -1300,6 +1300,7 @@ tree_estimate_probability (void)
 
   tree_bb_level_predictions ();
 
+  mark_irreducible_loops (&loops_info);
   predict_loops (&loops_info, false);
 
   FOR_EACH_BB (bb)