} unit_t;
/* Helpers */
+#define get_arch_env(co) ((co)->chordal_env->session_env->main_env->arch_env)
+#define get_irg(co) ((co)->chordal_env->session_env->irg)
+#define get_irn_col(co, irn) \
+ arch_register_get_index(arch_get_irn_register(get_arch_env(co), irn, 0))
#define set_irn_col(co, irn, col) \
- arch_set_irn_register(co->chordal_env->arch_env, irn, 0, arch_register_for_index(co->chordal_env->cls, col))
+ arch_set_irn_register(get_arch_env(co), irn, 0, arch_register_for_index(co->chordal_env->cls, col))
-#define get_irn_col(co, irn) \
- arch_register_get_index(arch_get_irn_register(co->chordal_env->arch_env, irn, 0))
#define list_entry_units(lh) list_entry(lh, unit_t, units)
/**
* Checks if a node is optimizable, viz. is a target of a 'copy-op'
*/
-#define is_optimizable(arch_env, irn) (is_Phi(irn) || is_Copy(arch_env, irn))
+#define is_optimizable(arch_env, irn) ((is_Phi(irn) && mode_is_datab(get_irn_mode(irn))) || is_Copy(arch_env, irn))
/**
* Checks if the irn is a non-interfering argument of a node which 'is_optimizable'
*/
int get_costs_all_one(ir_node *root, ir_node* arg, int pos);
+/**
+ * Returns the maximal costs possible, i.e. the costs if all
+ * pairs would be assigned different registers.
+ */
+int co_get_max_copy_costs(const copy_opt_t *co);
+
+/**
+ * Returns the inevitable costs, i.e. the costs of
+ * all copy pairs which interfere.
+ */
+int co_get_inevit_copy_costs(const copy_opt_t *co);
+
/**
* Returns the current costs the copies are causing.
* The result includes inevitable costs and the costs