Test WWC+addr+po+A

PPC WWC+addr+po+A
"RfeAP DpAddrdW Rfe PodRW WsePA"
Cycle=RfeAP DpAddrdW Rfe PodRW WsePA
Prefetch=0:x=F,2:x=W
Com=Rf Rf Ws
Orig=RfeAP DpAddrdW Rfe PodRW WsePA
{ ok=1;
0:r2=x; 0:r4=ok;
1:r2=x; 1:r5=y;
2:r2=y; 2:r4=x;
}
 P0               | P1            | P2           ;
 li r1,2          | lwz r1,0(r2)  | lwz r1,0(r2) ;
 lwarx %sta,r0,r2 | xor r3,r1,r1  | li r3,1      ;
 stwcx. r1,r0,r2  | li r4,1       | stw r3,0(r4) ;
 bne  Fail0       | stwx r4,r3,r5 |              ;
 b   Exit0        |               |              ;
 Fail0:           |               |              ;
 li r3,0          |               |              ;
 stw r3,0(r4)     |               |              ;
 Exit0:           |               |              ;
exists
(ok=1 /\ x=2 /\ 1:r1=2 /\ 2:r1=1)