Test S+popa+addr

PPC S+popa+addr
"PodWWPA RfeAP DpAddrdW Wse"
Cycle=RfeAP DpAddrdW Wse PodWWPA
Prefetch=0:x=F,1:x=W
Com=Rf Ws
Orig=PodWWPA RfeAP DpAddrdW Wse
{ ok=1;
0:r2=x; 0:r4=y; 0:r6=ok;
1:r2=y; 1:r5=x;
}
 P0               | P1            ;
 li r1,2          | lwz r1,0(r2)  ;
 stw r1,0(r2)     | xor r3,r1,r1  ;
 li r3,1          | li r4,1       ;
 lwarx %sta,r0,r4 | stwx r4,r3,r5 ;
 stwcx. r3,r0,r4  |               ;
 bne  Fail0       |               ;
 b   Exit0        |               ;
 Fail0:           |               ;
 li r5,0          |               ;
 stw r5,0(r6)     |               ;
 Exit0:           |               ;
exists
(ok=1 /\ x=2 /\ 1:r1=1)