Test m4l

PPC m4l (mFourl)
{
0:r5=x;
1:r5=x; 1:r6=y;
2:r5=x; 2:r6=y;
0:r1=1;
2:r1=1;
}
P0          |P1          |P2          ;
stw r1,0(r5)|lwz r1,0(r5)|stw r1,0(r6);
            |lwsync      |sync        ;
            |lwz r2,0(r6)|lwz r3,0(r5);
final (1:r1=1 /\  1:r2=0 /\ 2:r3=0);
with doko: exists; (* SS: ??? I think *)
default: exists;
power_b: exists;