[M3commit] CVS Update: cm3

[Jay Krell]

CVSROOT:	/usr/cvs
Changes by:	jkrell at birch.	10/01/02 22:40:42

Modified files:
	cm3/m3-sys/m3middle/src/: TInt.m3 

Log message:
	a 64bit hosted compiler fails when targeting
	a 32bit platform due to the use of
	TYPE Regno = [-1 .. NRegs];
	
	-1 is represented as Target.Int:4,{0xFF,0xFF,0xFF,0xFF,0,0,0,0}
	The problem is presumably that CheckSign doesn't like
	the trailing zeros.
	
	I believe the point of CheckSign(r.n:=4 to n:=8) is really
	for the case of n > r.n, i.e.:
	If you were to truncate
	8:0xFF,0xFF,0xFF,0x00,0xFF,0xFF,0xFF,0xFF
	to
	4:0xFF,0xFF,0xFF,0x00
	
	that would be an error (it probably
	fail earlier, when Target.Int doesn't
	fit in n = 4)
	
	CheckSign should always succeed when widening,
	when host integer is bigger than target integer.
	
	The for loops should already be empty for that case.