2 * Copyright (C) 1995-2008 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 Internal headers for liveness analysis.
23 * @author Sebastian Hack
26 #ifndef FIRM_BE_BELIVE_T_H
27 #define FIRM_BE_BELIVE_T_H
30 #include "irnodehashmap.h"
32 #include "irlivechk.h"
40 hook_entry_t hook_info;
44 typedef struct be_lv_info_node_t be_lv_info_node_t;
45 struct be_lv_info_node_t {
50 struct be_lv_info_head_t {
56 struct be_lv_info_head_t head;
57 struct be_lv_info_node_t node;
60 be_lv_info_node_t *be_lv_get(const be_lv_t *li, const ir_node *block,
63 static inline unsigned _be_is_live_xxx(const be_lv_t *li, const ir_node *block,
64 const ir_node *irn, unsigned flags)
69 be_lv_info_node_t *info = be_lv_get(li, block, irn);
70 res = info != NULL ? (info->flags & flags) != 0 : 0;
72 res = (lv_chk_bl_xxx(li->lvc, block, irn) & flags) != 0;
78 typedef struct lv_iterator_t
86 static inline lv_iterator_t be_lv_iteration_begin(const be_lv_t *lv,
87 const ir_node *block, be_lv_state_t flags)
90 res.info = ir_nodehashmap_get(be_lv_info_t, &lv->map, block);
91 res.irg = get_Block_irg(block);
93 res.i = res.info != NULL ? res.info[0].head.n_members : 0;
97 static inline ir_node *be_lv_iteration_next(lv_iterator_t *iterator)
99 while (iterator->i != 0) {
100 const be_lv_info_t *info = iterator->info + iterator->i--;
101 if (info->node.flags & iterator->flags)
102 return get_idx_irn(iterator->irg, info->node.idx);
107 #define be_lv_foreach(lv, block, flags, node) \
108 for (bool once = true; once;) \
109 for (lv_iterator_t iter = be_lv_iteration_begin((lv), (block), (flags)); once; once = false) \
110 for (ir_node *node; (node = be_lv_iteration_next(&iter)) != NULL;)
112 #define be_is_live_in(lv, bl, irn) _be_is_live_xxx(lv, bl, irn, be_lv_state_in)
113 #define be_is_live_end(lv, bl, irn) _be_is_live_xxx(lv, bl, irn, be_lv_state_end)
114 #define be_is_live_out(lv, bl, irn) _be_is_live_xxx(lv, bl, irn, be_lv_state_out)