47 	CC = P2 == 0;             /* Check zero count*/  define
48 	IF CC JUMP .Lfinished;    /* very unlikely */
50 	CC = R1 < R0 (IU);        /* From < To */  define
51 	IF !CC JUMP .Lno_overlap;
53 	CC = R0 <= R3 (IU);       /* (From+len) >= To */  define
54 	IF CC JUMP .Loverlap;
57 	CC = R2 <= R3;  define
58 	IF CC JUMP .Lbytes;
61 	CC =  AZ;                 /* AZ set if zero.*/  define
62 	IF !CC JUMP .Lbytes;      /* Jump if addrs not aligned.*/
85 	CC = P2 == 0;             /* any remaining bytes? */  define
87 	IF !CC JUMP .Lbytes;
103 	CC = P2 == 0;  define
104 	IF CC JUMP .Lno_loop;