Test WWC+po+lwsyncpa

PPC WWC+po+lwsyncpa
"Rfe PodRW Rfe LwSyncdRWPA WseAP"
Cycle=Rfe PodRW Rfe LwSyncdRWPA WseAP
Prefetch=0:x=F,2:x=W
Com=Rf Rf Ws
Orig=Rfe PodRW Rfe LwSyncdRWPA WseAP
{ ok=1;
0:r2=x;
1:r2=x; 1:r4=y;
2:r2=y; 2:r4=x; 2:r6=ok;
}
 P0           | P1           | P2               ;
 li r1,2      | lwz r1,0(r2) | lwz r1,0(r2)     ;
 stw r1,0(r2) | li r3,1      | lwsync           ;
              | stw r3,0(r4) | li r3,1          ;
              |              | lwarx %sta,r0,r4 ;
              |              | stwcx. r3,r0,r4  ;
              |              | bne  Fail2       ;
              |              | b   Exit2        ;
              |              | Fail2:           ;
              |              | li r5,0          ;
              |              | stw r5,0(r6)     ;
              |              | Exit2:           ;
exists
(ok=1 /\ x=2 /\ 1:r1=2 /\ 2:r1=1)