-/**
- * Internal headers for liveness analysis.
- * @author Sebastian Hack
- * @date 6.12.2004
+/*
+ * Copyright (C) 1995-2007 University of Karlsruhe. All right reserved.
+ *
+ * This file is part of libFirm.
+ *
+ * This file may be distributed and/or modified under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation and appearing in the file LICENSE.GPL included in the
+ * packaging of this file.
+ *
+ * Licensees holding valid libFirm Professional Edition licenses may use
+ * this file in accordance with the libFirm Commercial License.
+ * Agreement provided with the Software.
+ *
+ * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+ * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE.
*/
-#ifndef _BELIVE_T_H
-#define _BELIVE_T_H
-
-#include "firm_config.h"
+/**
+ * @file
+ * @brief Internal headers for liveness analysis.
+ * @author Sebastian Hack
+ * @date 06.12.2004
+ * @version $Id$
+ */
+#ifndef FIRM_BE_BELIVE_T_H
+#define FIRM_BE_BELIVE_T_H
#include "irgraph_t.h"
-#include "iredges_t.h"
+#include "irphase_t.h"
+#include "irhooks.h"
-#include "belive.h"
#include "pset.h"
-#include "set.h"
-#include "list.h"
-#include "hashptr.h"
-
-typedef enum _live_state_t {
- live_state_in = 1,
- live_state_end = 2,
- live_state_out = 4,
- live_state_block = 8,
-} live_state_t;
-
-typedef struct _irn_live_t {
- const ir_node *block;
- const ir_node *irn;
- unsigned state;
- struct _irn_live_t *next;
-} irn_live_t;
-
-typedef struct _irg_live_info_t {
- set *live;
-} irg_live_info_t;
-
-extern size_t live_irg_data_offset;
-
-#define get_irg_live_info(irg) (get_irg_data(irg, irg_live_info_t, live_irg_data_offset))
-
-#define live_is_in(live) (((live)->state & live_state_in) != 0)
-#define live_is_end(live) (((live)->state & live_state_end) != 0)
-#define live_is_out(live) (((live)->state & live_state_out) != 0)
-
-static INLINE irn_live_t *_get_or_set_live(const ir_node *block,
- const ir_node *irn, int state)
-{
- irg_live_info_t *live_info = get_irg_live_info(get_irn_irg(block));
- irn_live_t *live, templ;
- unsigned hash = HASH_PTR(block) + 37 * HASH_PTR(irn);
-
- templ.block = block;
- templ.irn = irn;
- templ.state = -1;
- templ.next = NULL;
+#include "bitset.h"
- live = set_insert(live_info->live, &templ, sizeof(templ), hash);
- if(live->state == -1) {
-
- if(!is_Block(irn)) {
- irn_live_t *bl_live = _get_or_set_live(block, block, live_state_block);
- live->next = bl_live->next;
- bl_live->next = live;
- }
-
- live->state = state;
- }
-
- live->state |= state;
-
- return live;
-}
+#include "belive.h"
-static INLINE int _is_live_in(const ir_node *block, const ir_node *irn)
-{
- return (_get_or_set_live(block, irn, 0)->state & live_state_in) != 0;
-}
+#define USE_LIVE_CHK
-static INLINE int _is_live_out(const ir_node *block, const ir_node *irn)
-{
- return (_get_or_set_live(block, irn, 0)->state & live_state_out) != 0;
-}
+#ifdef USE_LIVE_CHK
+#include "irlivechk.h"
+#endif
-static INLINE int _is_live_end(const ir_node *block, const ir_node *irn)
+struct _be_lv_t {
+ ir_phase ph;
+ ir_graph *irg;
+ bitset_t *nodes;
+ hook_entry_t hook_info;
+#ifdef USE_LIVE_CHK
+ lv_chk_t *lvc;
+#endif
+};
+
+struct _be_lv_info_node_t {
+ unsigned idx;
+ unsigned flags;
+};
+
+struct _be_lv_info_head_t {
+ unsigned n_members;
+ unsigned n_size;
+};
+
+struct _be_lv_info_t {
+ union {
+ struct _be_lv_info_head_t head;
+ struct _be_lv_info_node_t node;
+ } u;
+};
+
+static INLINE int _be_lv_next_irn(const struct _be_lv_t *lv, const ir_node *bl, unsigned flags, int i)
{
- return (_get_or_set_live(block, irn, 0)->state & live_state_end) != 0;
-}
+ struct _be_lv_info_t *arr = phase_get_irn_data(&lv->ph, bl);
-#define live_foreach(block, live_info) \
- for(live_info = _get_or_set_live(block, block, 0)->next; live_info; live_info = live_info->next)
+ if (arr) {
+ int n_members = (int) arr[0].u.head.n_members;
-static INLINE void _put_live(const ir_node *block, int state, pset *s)
-{
- irn_live_t *live;
+ while(i < n_members) {
+ if(arr[i + 1].u.node.flags & flags) {
+ return i;
+ }
+ ++i;
+ }
+ }
- live_foreach(block, live) {
- if(live->state & state)
- pset_insert_ptr(s, live->irn);
- }
+ return -1;
}
-static INLINE pset *_put_live_in(const ir_node *block, pset *s)
+static INLINE ir_node *_be_lv_get_irn(const struct _be_lv_t *lv, const ir_node *bl, int i)
{
- _put_live(block, live_state_in, s);
- return s;
+ struct _be_lv_info_t *arr = phase_get_irn_data(&lv->ph, bl);
+ return get_idx_irn(lv->irg, arr[i + 1].u.node.idx);
}
-static INLINE pset *_put_live_out(const ir_node *block, pset *s)
-{
- _put_live(block, live_state_out, s);
- return s;
-}
+struct _be_lv_info_node_t *be_lv_get(const struct _be_lv_t *li, const ir_node *bl, const ir_node *irn);
-static INLINE pset *_put_live_end(const ir_node *block, pset *s)
+static INLINE int _be_is_live_xxx(const struct _be_lv_t *li, const ir_node *block, const ir_node *irn, unsigned flags)
{
- _put_live(block, live_state_end, s);
- return s;
+ if (li->nodes) {
+ struct _be_lv_info_node_t *info = be_lv_get(li, block, irn);
+ return info ? (info->flags & flags) != 0 : 0;
+ }
+
+#ifdef USE_LIVE_CHK
+ else
+ return (lv_chk_bl_xxx(li->lvc, block, irn) & flags) != 0;
+#else
+ assert(li->nodes && "node sets must be computed");
+ return 0;
+#endif /* USE_LIVE_CHK */
}
-static INLINE int _is_phi_arg(const ir_node *irn)
-{
- const ir_edge_t *edge;
+#define be_lv_foreach(lv, bl, flags, i) \
+ for (i = _be_lv_next_irn(lv, bl, flags, 0); i >= 0; i = _be_lv_next_irn(lv, bl, flags, i + 1))
- assert(edges_activated(get_irn_irg(irn)) && "Please compute the out edges");
- foreach_out_edge(irn, edge)
- if(is_Phi(edge->src))
- return 1;
- return 0;
+static INLINE pset *_be_lv_pset_put(const struct _be_lv_t *lv, const ir_node *block, int state, pset *s)
+{
+ int i;
+ be_lv_foreach(lv, block, state, i)
+ pset_insert_ptr(s, _be_lv_get_irn(lv, block, i));
+ return s;
}
+#define be_lv_get_irn(lv, bl, i) _be_lv_get_irn(lv, bl, i)
+#define be_lv_pset_put_in(lv, bl, s) _be_lv_pset_put(lv, bl, be_lv_state_in, s)
+#define be_lv_pset_put_out(lv, bl, s) _be_lv_pset_put(lv, bl, be_lv_state_out, s)
+#define be_lv_pset_put_end(lv, bl, s) _be_lv_pset_put(lv, bl, be_lv_state_end, s)
-#define is_live_in(bl,irn) _is_live_in(bl, irn)
-#define is_live_out(bl,irn) _is_live_out(bl, irn)
-#define is_live_end(bl,irn) _is_live_end(bl, irn)
-#define put_live_in(bl,s) _put_live_in(bl, s)
-#define put_live_out(bl,s) _put_live_out(bl, s)
-#define put_live_end(bl,s) _put_live_end(bl, s)
-#define is_phi_arg(irn) _is_phi_arg(irn)
+#define be_is_live_in(lv, bl, irn) _be_is_live_xxx(lv, bl, irn, be_lv_state_in)
+#define be_is_live_end(lv, bl, irn) _be_is_live_xxx(lv, bl, irn, be_lv_state_end)
+#define be_is_live_out(lv, bl, irn) _be_is_live_xxx(lv, bl, irn, be_lv_state_out)
-/**
- * Initialize the liveness module.
- * To be called from be_init().
- */
-void be_liveness_init(void);
+#define be_lv_has_info_about(lv, irn) bitset_is_set((lv)->nodes, get_irn_idx(irn))
-#endif
+#endif /* FIRM_BE_BELIVE_T_H */
projects / libfirm / blobdiff