Test S+po+ctrlisyncra

PPC S+po+ctrlisyncra
"PodWW RfePR DpCtrlIsyncdWRA WseAP"
Cycle=RfePR DpCtrlIsyncdWRA WseAP PodWW
Prefetch=0:x=F,1:x=W
Com=Rf Ws
Orig=PodWW RfePR DpCtrlIsyncdWRA WseAP
{ ok=1;
0:r2=x; 0:r4=y;
1:r2=y; 1:r4=x; 1:r6=ok;
}
 P0           | P1               ;
 li r1,2      | lwarx r1,r0,r2   ;
 stw r1,0(r2) | cmpw r1,r1       ;
 li r3,1      | beq  LC00        ;
 stw r3,0(r4) | LC00:            ;
              | isync            ;
              | li r3,1          ;
              | lwarx %sta,r0,r4 ;
              | stwcx. r3,r0,r4  ;
              | bne  Fail1       ;
              | b   Exit1        ;
              | Fail1:           ;
              | li r5,0          ;
              | stw r5,0(r6)     ;
              | Exit1:           ;
exists
(ok=1 /\ x=2 /\ 1:r1=1)