Test WRW+2W+po+sync

Run WRW+2W+po+sync in model, using ppcmem

PPC WRW+2W+po+sync
"Rfe PodRW Wse SyncdWW Wse"
Cycle=Rfe PodRW Wse SyncdWW Wse
{
0:r2=x;
1:r2=x; 1:r4=y;
2:r2=y; 2:r4=x;
}
 P0           | P1           | P2           ;
 li r1,2      | lwz r1,0(r2) | li r1,2      ;
 stw r1,0(r2) | li r3,1      | stw r1,0(r2) ;
              | stw r3,0(r4) | sync         ;
              |              | li r3,1      ;
              |              | stw r3,0(r4) ;
exists
(x=2 /\ y=2 /\ 1:r1=2)