Test S+popa+syncrp

PPC S+popa+syncrp
"PodWWPA RfeAR SyncdRWRP Wse"
Cycle=RfeAR SyncdRWRP Wse PodWWPA
Prefetch=0:x=F,1:x=W
Com=Rf Ws
Orig=PodWWPA RfeAR SyncdRWRP Wse
{ ok=1;
0:r2=x; 0:r4=y; 0:r6=ok;
1:r2=y; 1:r4=x;
}
 P0               | P1             ;
 li r1,2          | lwarx r1,r0,r2 ;
 stw r1,0(r2)     | sync           ;
 li r3,1          | li r3,1        ;
 lwarx %sta,r0,r4 | stw r3,0(r4)   ;
 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)