Test S+syncap+popa

PPC S+syncap+popa
"SyncdWWAP Rfe PodRWPA WseAA"
Cycle=Rfe PodRWPA WseAA SyncdWWAP
Prefetch=0:x=F,1:x=W
Com=Rf Ws
Orig=SyncdWWAP Rfe PodRWPA WseAA
{ ok=1;
0:r2=x; 0:r4=y; 0:r6=ok;
1:r2=y; 1:r4=x; 1:r6=ok;
}
 P0               | P1               ;
 li r1,2          | lwz r1,0(r2)     ;
 lwarx %sta,r0,r2 | li r3,1          ;
 stwcx. r1,r0,r2  | lwarx %sta,r0,r4 ;
 bne  Fail0       | stwcx. r3,r0,r4  ;
 sync             | bne  Fail1       ;
 li r3,1          | b   Exit1        ;
 stw r3,0(r4)     | Fail1:           ;
 b   Exit0        | li r5,0          ;
 Fail0:           | stw r5,0(r6)     ;
 li r5,0          | Exit1:           ;
 stw r5,0(r6)     |                  ;
 Exit0:           |                  ;
exists
(ok=1 /\ x=2 /\ 1:r1=1)