-extern arch_env_t *arch_env_push_irn_handler(arch_env_t *env, arch_get_irn_ops_t *handler);
-
-/**
- * Remove a node handler from the handler stack.
- * @param env The architecture environment.
- * @return The popped handler.
- */
-extern arch_get_irn_ops_t *arch_env_pop_irn_handler(arch_env_t *env);