-#ifdef BUILD_GRAPH
-typedef struct _if_node_t {
- int nnr;
- pset *neighb;
-} if_node_t;
-
-typedef struct _if_edge_t {
- int src, tgt;
-} if_edge_t;
-
-set *be_ra_get_ifg(ir_graph *irg); /**< Deprecated. Use be_ra_get_ifg_edges. */
-set *be_ra_get_ifg_edges(ir_graph *irg);
-set *be_ra_get_ifg_nodes(ir_graph *irg);
-int ifg_has_edge(const ir_graph *irg, if_node_t *n1, if_node_t* n2);
-#define ifn_get_degree(ifnode) pset_count(ifnode->neighb)
-#define foreach_neighb(ifnode, curr) \
- for(curr=pset_first(ifnode->neighb); curr; curr=pset_next(ifnode->neighb))
-#endif
-
-extern void be_ra_chordal_spill(ir_graph *irg);
+/**
+ * Environment for each of the chordal register allocator phases
+ */
+struct _be_chordal_env_t {
+ struct obstack obst; /**< An obstack for temporary storage. */
+ be_ra_chordal_opts_t *opts; /**< A pointer to the chordal ra options. */
+ const be_irg_t *birg; /**< Back-end IRG session. */
+ dom_front_info_t *dom_front; /**< Dominance frontiers. */
+ ir_graph *irg; /**< The graph under examination. */
+ const arch_register_class_t *cls; /**< The current register class. */
+ pmap *border_heads; /**< Maps blocks to border heads. */
+ be_ifg_t *ifg; /**< The interference graph. */
+ void *data; /**< Some pointer, to which different phases can attach data to. */
+ DEBUG_ONLY(firm_dbg_module_t *dbg;) /**< Debug module for the chordal register allocator. */
+};
+
+static INLINE struct list_head *_get_block_border_head(const be_chordal_env_t *inf, ir_node *bl) {
+ return pmap_get(inf->border_heads, bl);
+}
+
+#define get_block_border_head(info, bl) _get_block_border_head(info, bl)
+
+#define foreach_border_head(head, pos) list_for_each_entry_reverse(border_t, pos, head, list)
+#define border_next(b) (list_entry((b)->list.next, border_t, list))
+#define border_prev(b) (list_entry((b)->list.prev, border_t, list))
+
+#define chordal_has_class(chordal_env, irn) \
+ arch_irn_consider_in_reg_alloc(chordal_env->birg->main_env->arch_env, chordal_env->cls, irn)
+
+int nodes_interfere(const be_chordal_env_t *env, const ir_node *a, const ir_node *b);
+
+void be_ra_chordal_color(be_chordal_env_t *chordal_env);
+
+/**
+ * Check a register allocation obtained with the chordal register allocator.
+ * @param chordal_env The chordal environment.
+ */
+void be_ra_chordal_check(be_chordal_env_t *chordal_env);
+
+enum {
+ /* spill method */
+ BE_CH_SPILL_BELADY = 1,
+ BE_CH_SPILL_ILP = 2,
+
+ /* Dump flags */
+ BE_CH_DUMP_NONE = (1 << 0),
+ BE_CH_DUMP_SPILL = (1 << 1),
+ BE_CH_DUMP_LIVE = (1 << 2),
+ BE_CH_DUMP_COLOR = (1 << 3),
+ BE_CH_DUMP_COPYMIN = (1 << 4),
+ BE_CH_DUMP_SSADESTR = (1 << 5),
+ BE_CH_DUMP_TREE_INTV = (1 << 6),
+ BE_CH_DUMP_CONSTR = (1 << 7),
+ BE_CH_DUMP_LOWER = (1 << 8),
+ BE_CH_DUMP_ALL = 2 * BE_CH_DUMP_LOWER - 1,
+
+ /* copymin method */
+ BE_CH_COPYMIN_HEUR = 1,
+ BE_CH_COPYMIN_ILP = 2,
+
+ /* ifg flavor */
+ BE_CH_IFG_STD = 1,
+ BE_CH_IFG_FAST = 2,
+
+ /* lower perm options */
+ BE_CH_LOWER_PERM_SWAP = (1 << 0),
+ BE_CH_LOWER_PERM_COPY = (1 << 1),
+ BE_CH_LOWER_PERM_STAT = (1 << 2)
+};
+
+struct _be_ra_chordal_opts_t {
+ int dump_flags;
+ int spill_method;
+ int copymin_method;
+ int ifg_flavor;
+ int lower_perm_opt;
+
+ char ilp_server[128];
+ char ilp_solver[128];
+};
+