Redis [QUESTION] Is it feasible to split all commands into two parts to improve performance?

Is it feasible to split all commands into two parts to improve performance? The first part, which includes parameter validation and content checks (non-memory operations), could be processed in the I/O thread, while the second part involving concurrency-sensitive operations would be handled in the main thread.

example(And maybe can split setGenericCommand?):

void setCommand(client *c) {
    robj *expire = NULL;
    int unit = UNIT_SECONDS;
    int flags = OBJ_NO_FLAGS;
========================= proc in iothread ===============================
    if (parseExtendedStringArgumentsOrReply(c,&flags,&unit,&expire,COMMAND_SET) != C_OK) {
        return;
    }

    c->argv[2] = tryObjectEncoding(c->argv[2]);
========================= proc in iothread ===============================
    setGenericCommand(c,flags,c->argv[1],&(c->argv[2]),expire,unit,NULL,NULL);
}