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 * Copyright (C) 2007 Universitaet Karlsruhe
32 * Released under the GPL
34 #ifndef FIRM_ANA_IRLIVECHK_H
35 #define FIRM_ANA_IRLIVECHK_H
40 typedef struct _lv_chk_t lv_chk_t;
43 * Make a new liveness check environment.
44 * @param irg The graph.
45 * @return The environment.
47 extern lv_chk_t *lv_chk_new(ir_graph *irg);
50 * Free liveness check information.
51 * @param lv The liveness check information.
53 extern void lv_chk_free(lv_chk_t *lv);
56 * Check, if a node is live end of a given block.
57 * @param lv The liveness environment.
58 * @param bl The block to investigate.
59 * @param irn The node to check for.
60 * @return 1, if @p what is live end at @p bl, 0 else.
62 extern int lv_chk_bl_end(const lv_chk_t *lv, const ir_node *bl, const ir_node *irn);
65 * Check, if a node is live out of a given block.
66 * @param lv The liveness environment.
67 * @param bl The block to investigate.
68 * @param irn The node to check for.
69 * @return 1, if @p what is live out at @p bl, 0 else.
71 extern int lv_chk_bl_out(const lv_chk_t *lv, const ir_node *bl, const ir_node *irn);
74 * Check, if a node is live in of a given block.
75 * @param lv The liveness environment.
76 * @param bl The block to investigate.
77 * @param irn The node to check for.
78 * @return 1, if @p what is live in at @p bl, 0 else.
80 extern int lv_chk_bl_in(const lv_chk_t *lv, const ir_node *bl, const ir_node *irn);
82 #endif /* FIRM_ANA_IRLIVECHK_H */