Test l3

PPC l3 (BasicLThree)
{
0:r4=x; 0:r5=y;
1:r4=x; 1:r5=y;
2:r5=y;
0:r1=1;
1:r2=2; 1:r1=1;
2:r1=1;
}
P0          |P1          |P2          ;
lwz r2,0(r5)|stw r2,0(r4)|stw r1,0(r5);
lwsync      |sync        |            ;
stw r1,0(r4)|lwz r1,0(r5)|            ;
Observed
    0:r2=1; 1:r1=0; x=2;