-/**
- * Add a node handler to the environment.
- * @param env The environment.
- * @param handler A node handler.
- * @return The environment itself.
- */
-extern arch_env_t *arch_env_push_irn_handler(arch_env_t *env, const arch_irn_handler_t *handler);
-
-/**
- * Remove a node handler from the handler stack.
- * @param env The architecture environment.
- * @return The popped handler.
- */
-extern const arch_irn_handler_t *arch_env_pop_irn_handler(arch_env_t *env);
-