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authorJing Yu <jingyu@google.com>2010-07-22 14:03:48 -0700
committerJing Yu <jingyu@google.com>2010-07-22 14:03:48 -0700
commitb094d6c4bf572654a031ecc4afe675154c886dc5 (patch)
tree89394c56b05e13a5413ee60237d65b0214fd98e2 /gcc-4.4.3/gcc/tree-affine.h
parentdc34721ac3bf7e3c406fba8cfe9d139393345ec5 (diff)
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commit gcc-4.4.3 which is used to build gcc-4.4.3 Android toolchain in master.
The source is based on fsf gcc-4.4.3 and contains local patches which are recorded in gcc-4.4.3/README.google. Change-Id: Id8c6d6927df274ae9749196a1cc24dbd9abc9887
Diffstat (limited to 'gcc-4.4.3/gcc/tree-affine.h')
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diff --git a/gcc-4.4.3/gcc/tree-affine.h b/gcc-4.4.3/gcc/tree-affine.h
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+/* Operations with affine combinations of trees.
+ Copyright (C) 2005, 2007, 2008 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 3, or (at your option) any
+later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+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. */
+
+#define MAX_AFF_ELTS 8
+
+/* Element of an affine combination. */
+
+struct aff_comb_elt
+{
+ /* The value of the element. */
+ tree val;
+
+ /* Its coefficient in the combination. */
+ double_int coef;
+};
+
+typedef struct affine_tree_combination
+{
+ /* Type of the result of the combination. */
+ tree type;
+
+ /* Constant offset. */
+ double_int offset;
+
+ /* Number of elements of the combination. */
+ unsigned n;
+
+ /* Elements and their coefficients. Type of elements may be different from
+ TYPE, but their sizes must be the same (STRIP_NOPS is applied to the
+ elements).
+
+ 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 will be either sizetype for
+ TYPE of POINTER_TYPEs or TYPE. */
+ tree rest;
+} aff_tree;
+
+double_int double_int_ext_for_comb (double_int, 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 aff_combination_convert (aff_tree *, tree);
+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 *);