/* Operations with affine combinations of trees.
- Copyright (C) 2005 Free Software Foundation, Inc.
+ Copyright (C) 2005, 2007 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
-Free Software Foundation; either version 2, or (at your option) any
+Free Software Foundation; either version 3, or (at your option) any
later version.
GCC is distributed in the hope that it will be useful, but WITHOUT
for more details.
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, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
/* Affine combination of trees. We keep track of at most MAX_AFF_ELTS elements
to make things simpler; this is sufficient in most cases. */
TYPE, but their sizes must be the same (STRIP_NOPS is applied to the
elements).
- The coefficients are always sign extened from the precision of TYPE
+ The coefficients are always sign extended from the precision of TYPE
(regardless of signedness of TYPE). */
struct aff_comb_elt elts[MAX_AFF_ELTS];
/* Remainder of the expression. Usually NULL, used only if there are more
- than MAX_AFF_ELTS elements. Type of REST must be TYPE. */
+ than MAX_AFF_ELTS elements. Type of REST will be either sizetype for
+ TYPE of POINTER_TYPEs or TYPE. */
tree rest;
} aff_tree;
void aff_combination_const (aff_tree *, tree, double_int);
void aff_combination_elt (aff_tree *, tree, tree);
void aff_combination_scale (aff_tree *, double_int);
+void aff_combination_mult (aff_tree *, aff_tree *, aff_tree *);
void aff_combination_add (aff_tree *, aff_tree *);
void aff_combination_add_elt (aff_tree *, tree, double_int);
void aff_combination_remove_elt (aff_tree *, unsigned);
void tree_to_aff_combination (tree, tree, aff_tree *);
tree aff_combination_to_tree (aff_tree *);
void unshare_aff_combination (aff_tree *);
+bool aff_combination_constant_multiple_p (aff_tree *, aff_tree *, double_int *);
+void aff_combination_expand (aff_tree *, struct pointer_map_t **);
+void tree_to_aff_combination_expand (tree, tree, aff_tree *,
+ struct pointer_map_t **);
+void get_inner_reference_aff (tree, aff_tree *, double_int *);
+void free_affine_expand_cache (struct pointer_map_t **);
+
+/* Debugging functions. */
+void print_aff (FILE *, aff_tree *);
+void debug_aff (aff_tree *);