[M3commit] CVS Update: cm3

[Jay Krell]

CVSROOT:	/usr/cvs
Changes by:	jkrell at birch.	10/02/11 09:42:51

Modified files:
	cm3/m3-sys/m3back/src/: Codex86.m3 

Log message:
	encode constant shifts by 1 in two bytes instead of three; though the right approach is actually to do an add to self, we'll get to that as part of a broader pass following the optimization guidelines, like decomposing multiplication as adds/shifts, division by constant to multiplication by reciprocal, etc.