+/**
+ * @file
+ * @brief Interface for interference graphs.
+ * @author Sebastian Hack
+ * @date 18.11.2005
+ * @version $Id$
+ */
+#ifndef FIRM_BE_BEIFG_H
+#define FIRM_BE_BEIFG_H
+
+#include <stdio.h>
+
+#include "irnode.h"
+#include "irnodeset.h"
+
+#include "becopyopt.h"
+#include "beirg.h"
+
+typedef struct be_ifg_t {
+ const be_chordal_env_t *env;
+} be_ifg_t;
+
+typedef struct nodes_iter_t {
+ const be_chordal_env_t *env;
+ struct obstack obst;
+ int n;
+ int curr;
+ ir_node **nodes;
+} nodes_iter_t;
+
+typedef struct neighbours_iter_t {
+ const be_chordal_env_t *env;
+ const ir_node *irn;
+ int valid;
+ ir_nodeset_t neighbours;
+ ir_nodeset_iterator_t iter;
+} neighbours_iter_t;
+
+typedef struct cliques_iter_t {
+ struct obstack ob;
+ const be_chordal_env_t *cenv;
+ ir_node **buf;
+ ir_node **blocks;
+ int n_blocks, blk;
+ struct list_head *bor;
+ pset *living;
+} cliques_iter_t;
+
+void be_ifg_free(be_ifg_t *ifg);
+int be_ifg_connected(const be_ifg_t *ifg, const ir_node *a,
+ const ir_node *b);
+ir_node *be_ifg_neighbours_begin(const be_ifg_t *ifg, neighbours_iter_t *iter,
+ const ir_node *irn);
+ir_node *be_ifg_neighbours_next(neighbours_iter_t *iter);
+void be_ifg_neighbours_break(neighbours_iter_t *iter);
+ir_node *be_ifg_nodes_begin(const be_ifg_t *ifg, nodes_iter_t *iter);
+ir_node *be_ifg_nodes_next(nodes_iter_t *iter);
+void be_ifg_nodes_break(nodes_iter_t *iter);
+int be_ifg_cliques_begin(const be_ifg_t *ifg, cliques_iter_t *iter,
+ ir_node **buf);
+int be_ifg_cliques_next(cliques_iter_t *iter);
+void be_ifg_cliques_break(cliques_iter_t *iter);
+int be_ifg_degree(const be_ifg_t *ifg, const ir_node *irn);
+
+#define be_ifg_foreach_neighbour(ifg, iter, irn, pos) \
+ for(pos = be_ifg_neighbours_begin(ifg, iter, irn); pos != NULL; pos = be_ifg_neighbours_next(iter))
+
+#define be_ifg_foreach_node(ifg, iter, pos) \
+ for(pos = be_ifg_nodes_begin(ifg, iter); pos != NULL; pos = be_ifg_nodes_next(iter))