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 * @author Sebastian Hack
27 * Live in/end checks whose only precomputation concerns the structure of the CFG.
28 * Hence, nothing has to be updated if the program is modified unless the CFG is touched.
29 * See .c file for more comments.
31 #ifndef FIRM_ANA_IRLIVECHK_H
32 #define FIRM_ANA_IRLIVECHK_H
37 typedef struct _lv_chk_t lv_chk_t;
40 * Make a new liveness check environment.
41 * @param irg The graph.
42 * @return The environment.
44 extern lv_chk_t *lv_chk_new(ir_graph *irg);
47 * Free liveness check information.
48 * @param lv The liveness check information.
50 extern void lv_chk_free(lv_chk_t *lv);
53 * Check, if a node is live end of a given block.
54 * @param lv The liveness environment.
55 * @param bl The block to investigate.
56 * @param irn The node to check for.
57 * @return 1, if @p what is live end at @p bl, 0 else.
59 extern int lv_chk_bl_end(const lv_chk_t *lv, const ir_node *bl, const ir_node *irn);
62 * Check, if a node is live out of a given block.
63 * @param lv The liveness environment.
64 * @param bl The block to investigate.
65 * @param irn The node to check for.
66 * @return 1, if @p what is live out at @p bl, 0 else.
68 extern int lv_chk_bl_out(const lv_chk_t *lv, const ir_node *bl, const ir_node *irn);
71 * Check, if a node is live in of a given block.
72 * @param lv The liveness environment.
73 * @param bl The block to investigate.
74 * @param irn The node to check for.
75 * @return 1, if @p what is live in at @p bl, 0 else.
77 extern int lv_chk_bl_in(const lv_chk_t *lv, const ir_node *bl, const ir_node *irn);
79 #endif /* FIRM_ANA_IRLIVECHK_H */