/* Scalar evolution detector.
- Copyright (C) 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
Contributed by Sebastian Pop <s.pop@laposte.net>
This file is part of GCC.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA. */
#ifndef GCC_TREE_SCALAR_EVOLUTION_H
#define GCC_TREE_SCALAR_EVOLUTION_H
-extern tree number_of_iterations_in_loop (struct loop *);
+extern tree number_of_latch_executions (struct loop *);
+extern tree number_of_exit_cond_executions (struct loop *);
extern tree get_loop_exit_condition (struct loop *);
-extern void scev_initialize (struct loops *loops);
+extern void scev_initialize (void);
extern void scev_reset (void);
extern void scev_finalize (void);
extern tree analyze_scalar_evolution (struct loop *, tree);
extern tree instantiate_parameters (struct loop *, tree);
extern void gather_stats_on_scev_database (void);
extern void scev_analysis (void);
-extern bool simple_iv (struct loop *, tree, tree, tree *, tree *, bool);
+unsigned int scev_const_prop (void);
+
+extern bool simple_iv (struct loop *, tree, tree, affine_iv *, bool);
+
+/* Returns the loop of the polynomial chrec CHREC. */
+
+static inline struct loop *
+get_chrec_loop (tree chrec)
+{
+ return get_loop (CHREC_VARIABLE (chrec));
+}
#endif /* GCC_TREE_SCALAR_EVOLUTION_H */