X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fopt%2Fstrength_red.h;h=481b7e2ddcce541848f1af457b8c7c929ede50d7;hb=b73f55938b96a97a0c9322f22e18258e50546c93;hp=eab6f2fe78f8fb7ffefc038965aba0ae611753bf;hpb=d957d95d2acb2d73015af7458949938161a6dd8f;p=libfirm

diff --git a/ir/opt/strength_red.h b/ir/opt/strength_red.h
index eab6f2fe7..481b7e2dd 100644
--- a/ir/opt/strength_red.h
+++ b/ir/opt/strength_red.h
@@ -7,9 +7,9 @@
  * Purpose:     Strength reduction.
  * Author:      Beyhan Veliev
  * Modified by:
- * Created:     22.8.2003
+ * Created:     22.8.2004
  * CVS-ID:      $Id$
- * Copyright:   (c) 2003 Universität Karlsruhe
+ * Copyright:   (c) 2004 Universität Karlsruhe
  * Licence:     This file protected by GPL -  GNU GENERAL PUBLIC LICENSE.
  *
  *
@@ -21,11 +21,28 @@
 # ifndef _STRENGTH_RED_H_
 # define _STRENGTH_RED_H_
 
-# include "irgraph.h"
+#include "irnode.h"
+#include "irgraph.h"
+#include "irloop.h"
 
 /** Performs strength reduction for the passed graph. */
 void reduce_strength(ir_graph *irg);
 
+/* The information needed for an induction variable */
+# ifndef _STRENGTH_RED_TYP_
+# define _STRENGTH_RED_TYP_
+typedef struct _induct_var_info {
+  ir_op   *operation_code;
+  ir_node *increment, *init, *op, *itervar_phi, *c, *new_phi, *new_increment, *new_init;
+  ir_node *new_op, *new_add, *reducible_node;
+  ir_node *old_ind, *symconst, *new_cmp, *cmp_const, *cmp_init_block, *cmp;
+  int      be_pos, strong_reduced;
+  int      init_pred_pos, op_pred_pos, out_loop_res, phi_pred, reducible;
+  ir_loop *l_itervar_phi;
+}induct_var_info;
+#endif
 
+/** If an ir_node is induction variable return info else return NULL. */
+induct_var_info *is_induction_variable ( induct_var_info *info);
 
 #endif /* _STRENGTH_RED_H_ */