2 * Copyright (C) 1995-2007 University of Karlsruhe. All right reserved.
4 * This file is part of libFirm.
6 * This file may be distributed and/or modified under the terms of the
7 * GNU General Public License version 2 as published by the Free Software
8 * Foundation and appearing in the file LICENSE.GPL included in the
9 * packaging of this file.
11 * Licensees holding valid libFirm Professional Edition licenses may use
12 * this file in accordance with the libFirm Commercial License.
13 * Agreement provided with the Software.
15 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
16 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * @brief Simple SSA destruction.
23 * @author Daniel Grund
27 #ifndef FIRM_BE_BESSADESTRSIMPLE_H
28 #define FIRM_BE_BESSADESTRSIMPLE_H
38 * Insert copys to destruct SSA form and
39 * define variables (numbers) for all SSA-values.
40 * All values in a phi class get assigned the same variable name.
41 * The link field maps values to the var-name
43 * @return A set mapping SSA values to variables
45 set *be_ssa_destr_simple(ir_graph *irg, const arch_env_t *aenv);
47 void free_ssa_destr_simple(set *vars);
50 * This struct maps a variable (nr) to the values belonging to this variable
52 typedef struct _be_var_info_t {
53 int var_nr; /* the key */
54 pset *values; /* the ssa-values belonging to this variable */
58 * The link field of an irn points to the var_info struct
59 * representing the corresponding variable.
61 #define be_get_var_info(irn) ((be_var_info_t *)get_irn_link(irn))
63 #define SET_REMOVED -1
65 pset *be_get_var_values(set *vals, int var_nr);
66 be_var_info_t *be_var_add_value(set *vars, int var_nr, ir_node *irn);
67 be_var_info_t *be_var_find_or_insert(set *vars, int var_nr);
68 be_var_info_t *be_var_find(set *vars, int var_nr);
70 #endif /* FIRM_BE_BESSADESTRSIMPLE_H */