It's unlikely that you could write enough code to be too big for the compiler. I've actually had this happen on a 'not-so-big' plugin. There was actually something wrong with my code. I recommend that you comment out large blocks of your code to see if you get it to respond (error or not, doesn't matter as long as it responds with something). Then, When it starts responding again, you can narrow it down from what you just commented out.
Of course, the alternative to post your code always exists . . . but I have a feeling that won't happen.