tree-ssa-loop.c (tree_vectorize): Return the result of vectorize_loops.

	* tree-ssa-loop.c (tree_vectorize): Return the result of
	vectorize_loops.
	* tree-vectorizer.c (vectorize_loops): Return TODO_cleanup_cfg
	if anything changed.
	* tree-vectorizer.h (vectorize_loops): Declaration removed.
	* tree-flow.h (vectorize_loops): Declaration changed.

From-SVN: r118731

gcc/ChangeLog

 2006-11-12  Zdenek Dvorak <dvorakz@suse.cz>
 
+	* tree-ssa-loop.c (tree_vectorize): Return the result of
+	vectorize_loops.
+	* tree-vectorizer.c (vectorize_loops): Return TODO_cleanup_cfg
+	if anything changed.
+	* tree-vectorizer.h (vectorize_loops): Declaration removed.
+	* tree-flow.h (vectorize_loops): Declaration changed.
+
+2006-11-12  Zdenek Dvorak <dvorakz@suse.cz>
+
 	* tree-ssa-loop-prefetch.c (schedule_prefetches): Cleanup and improve
 	comments.
 	(issue_prefetch_ref): Move assignment to write_p out of loop.

gcc/tree-flow.h

@@ -801,7 +801,7 @@ struct tree_niter_desc
 };
 
 /* In tree-vectorizer.c */
-void vectorize_loops (struct loops *);
+unsigned vectorize_loops (struct loops *);
 extern bool vect_can_force_dr_alignment_p (tree, unsigned int);
 extern tree get_vectype_for_scalar_type (tree);
 

gcc/tree-ssa-loop.c

@@ -189,8 +189,7 @@ struct tree_opt_pass pass_tree_unswitch =
 static unsigned int
 tree_vectorize (void)
 {
-  vectorize_loops (current_loops);
-  return 0;
+  return vectorize_loops (current_loops);
 }
 
 static bool

gcc/tree-vectorizer.c

@@ -2151,7 +2151,7 @@ vect_is_simple_iv_evolution (unsigned loop_nb, tree access_fn, tree * init,
    
    Entry Point to loop vectorization phase.  */
 
-void
+unsigned
 vectorize_loops (struct loops *loops)
 {
   unsigned int i;
@@ -2209,4 +2209,6 @@ vectorize_loops (struct loops *loops)
       destroy_loop_vec_info (loop_vinfo);
       loop->aux = NULL;
     }
+
+  return num_vectorized_loops > 0 ? TODO_cleanup_cfg : 0;
 }

gcc/tree-vectorizer.h

@@ -345,8 +345,6 @@ extern bool supportable_widening_operation (enum tree_code, tree, tree,
 extern loop_vec_info new_loop_vec_info (struct loop *loop);
 extern void destroy_loop_vec_info (loop_vec_info);
 extern stmt_vec_info new_stmt_vec_info (tree stmt, loop_vec_info);
-/* Main driver.  */
-extern void vectorize_loops (struct loops *);
 
 
 /** In tree-vect-analyze.c  **/