-void arch_env_set_irn_handler(arch_env_t *env, arch_get_irn_ops_t *handler)
-{
- env->arch_handler = handler;
-}
-
-static const arch_irn_ops_t *fallback_irn_ops = NULL;
-
-int arch_register_class_put(const arch_register_class_t *cls, bitset_t *bs)
+/**
+ * Put all registers in a class into a bitset.
+ * @param cls The class.
+ * @param bs The bitset.
+ * @return The number of registers in the class.
+ */
+static int arch_register_class_put(const arch_register_class_t *cls, bitset_t *bs)