[PATCH] Move stuff to simplify-rtx.c, 6/13 - PLUS

[Paolo Bonzini]

> Hmm.  It's the season of good will, and out of respect of your
> good (but not perfect) record of commiting large reorganization
> patches without breaking things, I'll approve the single mega-patch
> for mainline.

I vented enough in the other message, so this one is to thank you for 
spending your time on reviewing this cleanups.

Paolo