Test WWC+syncrp+po+A

PPC WWC+syncrp+po+A
"RfeAR SyncdRWRP Rfe PodRW WsePA"
Cycle=RfeAR SyncdRWRP Rfe PodRW WsePA
Prefetch=0:x=F,2:x=W
Com=Rf Rf Ws
Orig=RfeAR SyncdRWRP Rfe PodRW WsePA
{ ok=1;
0:r2=x; 0:r4=ok;
1:r2=x; 1:r4=y;
2:r2=y; 2:r4=x;
}
 P0               | P1             | P2           ;
 li r1,2          | lwarx r1,r0,r2 | lwz r1,0(r2) ;
 lwarx %sta,r0,r2 | sync           | li r3,1      ;
 stwcx. r1,r0,r2  | li r3,1        | stw r3,0(r4) ;
 bne  Fail0       | stw r3,0(r4)   |              ;
 b   Exit0        |                |              ;
 Fail0:           |                |              ;
 li r3,0          |                |              ;
 stw r3,0(r4)     |                |              ;
 Exit0:           |                |              ;
exists
(ok=1 /\ x=2 /\ 1:r1=2 /\ 2:r1=1)