[M3commit] CVS Update: cm3

[Antony Hosking]

CVSROOT:	/usr/cvs
Changes by:	hosking at birch.	07/06/22 17:41:49

Modified files:
	cm3/m3-sys/m3cggen/src/: Main.m3 

Log message:
	Add preliminary support for atomic operations as part of the M3 intermediate
	code (M3CG).  The front-end compiler still does not contain support for these.
	The operations supported are those supported by newer versions of gcc, on
	which cm3cg is implemented.