-/**
- * Internal headers for liveness analysis.
- * @author Sebastian Hack
- * @date 6.12.2004
+/*
+ * This file is part of libFirm.
+ * Copyright (C) 2012 University of Karlsruhe.
*/
-#ifndef _BELIVE_T_H
-#define _BELIVE_T_H
-
-#include "config.h"
-
-#include "pset.h"
-
-typedef struct _block_live_info_t {
- pset *in;
- pset *out;
-} block_live_info_t;
-
-typedef struct _node_live_info_t {
- unsigned last_use_in_block : 1;
-} node_live_info_t;
-
-typedef struct _live_info_t {
- union {
- block_live_info_t block;
- node_live_info_t node;
- } v;
-} live_info_t;
-
-extern size_t live_irn_data_offset;
+/**
+ * @file
+ * @brief Internal headers for liveness analysis.
+ * @author Sebastian Hack
+ * @date 06.12.2004
+ */
+#ifndef FIRM_BE_BELIVE_T_H
+#define FIRM_BE_BELIVE_T_H
+
+#include <stdbool.h>
+#include "irnodehashmap.h"
+#include "irhooks.h"
+#include "irlivechk.h"
+#include "belive.h"
+#include "bearch.h"
+
+#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)
+
+struct be_lv_t {
+ ir_nodehashmap_t map;
+ struct obstack obst;
+ bool sets_valid;
+ ir_graph *irg;
+ lv_chk_t *lvc;
+};
+
+typedef struct be_lv_info_node_t be_lv_info_node_t;
+struct be_lv_info_node_t {
+ ir_node *node;
+ unsigned flags;
+};
+
+struct be_lv_info_head_t {
+ unsigned n_members;
+ unsigned n_size;
+};
+
+union be_lv_info_t {
+ struct be_lv_info_head_t head;
+ struct be_lv_info_node_t node;
+};
+
+be_lv_info_node_t *be_lv_get(const be_lv_t *li, const ir_node *block,
+ const ir_node *irn);
+
+static inline unsigned _be_is_live_xxx(const be_lv_t *li, const ir_node *block,
+ const ir_node *irn, unsigned flags)
+{
+ unsigned res;
-#define get_irn_live_info(irn) get_irn_data(irn, live_info_t, live_irn_data_offset)
-#define get_live_info_irn(inf) get_irn_data_base(inf, live_irn_data_offset)
+ if (li->sets_valid) {
+ be_lv_info_node_t *info = be_lv_get(li, block, irn);
+ res = info != NULL ? (info->flags & flags) != 0 : 0;
+ } else {
+ res = (lv_chk_bl_xxx(li->lvc, block, irn) & flags) != 0;
+ }
-#define get_block_live_info(irn) &(get_irn_live_info(irn)->v.block)
+ return res;
+}
-static INLINE int _is_live_in(const ir_node *block, const ir_node *irn)
+typedef struct lv_iterator_t
{
- block_live_info_t *info = get_block_live_info(block);
+ be_lv_info_t *info;
+ size_t i;
+} lv_iterator_t;
- assert(is_Block(block) && "Need a block here");
- return pset_find_ptr(info->in, irn) != NULL;
+static inline lv_iterator_t be_lv_iteration_begin(const be_lv_t *lv,
+ const ir_node *block)
+{
+ lv_iterator_t res;
+ res.info = ir_nodehashmap_get(be_lv_info_t, &lv->map, block);
+ res.i = res.info != NULL ? res.info[0].head.n_members : 0;
+ return res;
}
-static INLINE int _is_live_out(const ir_node *block, const ir_node *irn)
+static inline ir_node *be_lv_iteration_next(lv_iterator_t *iterator, be_lv_state_t flags)
{
- block_live_info_t *info = get_block_live_info(block);
+ while (iterator->i != 0) {
+ const be_lv_info_t *info = iterator->info + iterator->i--;
+ if (info->node.flags & flags)
+ return info->node.node;
+ }
+ return NULL;
+}
- assert(is_Block(block) && "Need a block here");
- return pset_find_ptr(info->out, irn) != NULL;
+static inline ir_node *be_lv_iteration_cls_next(lv_iterator_t *iterator, be_lv_state_t flags, const arch_register_class_t *cls)
+{
+ while (iterator->i != 0) {
+ const be_lv_info_t *info = iterator->info + iterator->i--;
+ if (!(info->node.flags & flags))
+ continue;
+
+ ir_node *node = info->node.node;
+ ir_mode *mode = get_irn_mode(node);
+ if (!mode_is_datab(mode))
+ continue;
+ if (!arch_irn_consider_in_reg_alloc(cls, node))
+ continue;
+ return node;
+ }
+ return NULL;
}
-#define is_live_in(block,irn) _is_live_in(block, irn)
-#define is_live_out(block,irn) _is_live_out(block, irn)
+#define be_lv_foreach(lv, block, flags, node) \
+ for (bool once = true; once;) \
+ for (lv_iterator_t iter = be_lv_iteration_begin((lv), (block)); once; once = false) \
+ for (ir_node *node; (node = be_lv_iteration_next(&iter, (flags))) != NULL;)
-/**
- * Initialize the liveness module.
- * To be called from be_init().
- */
-void be_liveness_init(void);
+#define be_lv_foreach_cls(lv, block, flags, cls, node) \
+ for (bool once = true; once;) \
+ for (lv_iterator_t iter = be_lv_iteration_begin((lv), (block)); once; once = false) \
+ for (ir_node *node; (node = be_lv_iteration_cls_next(&iter, (flags), (cls))) != NULL;)
#endif
projects / libfirm / blobdiff