Test MP+syncpa+ctrl

PPC MP+syncpa+ctrl
"SyncdWWPA RfeAP DpCtrldR Fre"
Cycle=RfeAP DpCtrldR Fre SyncdWWPA
Prefetch=1:x=T
Com=Rf Fr
Orig=SyncdWWPA RfeAP DpCtrldR Fre
{ ok=1;
0:r2=x; 0:r4=y; 0:r6=ok;
1:r2=y; 1:r4=x;
}
 P0               | P1           ;
 li r1,1          | lwz r1,0(r2) ;
 stw r1,0(r2)     | cmpw r1,r1   ;
 sync             | beq  LC00    ;
 li r3,1          | LC00:        ;
 lwarx %sta,r0,r4 | lwz r3,0(r4) ;
 stwcx. r3,r0,r4  |              ;
 bne  Fail0       |              ;
 b   Exit0        |              ;
 Fail0:           |              ;
 li r5,0          |              ;
 stw r5,0(r6)     |              ;
 Exit0:           |              ;
exists
(ok=1 /\ 1:r1=1 /\ 1:r3=0)