-arch_env_t *arch_env_push_irn_handler(arch_env_t *env,
- const arch_irn_handler_t *handler)
-{
- assert(env->handlers_tos < ARCH_MAX_HANDLERS);
- env->handlers[env->handlers_tos++] = handler;
- return env;
-}
-
-const arch_irn_handler_t *arch_env_pop_irn_handler(arch_env_t *env)
-{
- assert(env->handlers_tos > 0 && env->handlers_tos <= ARCH_MAX_HANDLERS);
- return env->handlers[--env->handlers_tos];
-}
-
-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. May be NULL.
+ * @return The number of registers in the class.
+ */
+static int arch_register_class_put(const arch_register_class_t *cls, bitset_t *bs)