Test MP+sync+po

Run MP+sync+po in model, using ppcmem

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