Test RWC+po+sync

Run RWC+po+sync in model, using ppcmem

PPC RWC+po+sync
"Rfe PodRR Fre SyncdWR Fre"
Cycle=Rfe PodRR Fre SyncdWR Fre
{
0:r2=x;
1:r2=x; 1:r4=y;
2:r2=y; 2:r4=x;
}
 P0           | P1           | P2           ;
 li r1,1      | lwz r1,0(r2) | li r1,1      ;
 stw r1,0(r2) | lwz r3,0(r4) | stw r1,0(r2) ;
              |              | sync         ;
              |              | lwz r3,0(r4) ;
exists
(1:r1=1 /\ 1:r3=0 /\ 2:r3=0)