42 	R3 = R1 + R2;  define
43 	CC = R0 < R3;	/* and dst < src+len */
49 	R3 = R1 | R0;  define
51 	R3 = R3 & R1;  define
52 	CC = R3;	/* low bits set on either address? */
64 	R3 = B[P1++] (X);  define
66 	B[P0++] = R3;
75 	R3 = [I1++];  define
78 	[P0++] = R3;
80 	R3 = [I1++];  define
84 	MNOP || [P0++] = R3 || R3 = [I1++];
86 	[P0++] = R3;
88 	R3 = 0x3;  define
89 	R3 = R2 & R3;  define
90 	CC = R3 == 0;
94 .Lbytes_left:	P2 = R3;