Test LB+isyncpa+isyncra

PPC LB+isyncpa+isyncra
"ISyncdRWPA RfeAR ISyncdRWRA RfeAP"
Cycle=RfeAP ISyncdRWPA RfeAR ISyncdRWRA
Prefetch=
Com=Rf Rf
Orig=ISyncdRWPA RfeAR ISyncdRWRA RfeAP
{ ok=1;
0:r2=x; 0:r4=y; 0:r6=ok;
1:r2=y; 1:r4=x; 1:r6=ok;
}
 P0               | P1               ;
 lwz r1,0(r2)     | lwarx r1,r0,r2   ;
 isync            | isync            ;
 li r3,1          | li r3,1          ;
 lwarx %sta,r0,r4 | lwarx %sta,r0,r4 ;
 stwcx. r3,r0,r4  | stwcx. r3,r0,r4  ;
 bne  Fail0       | bne  Fail1       ;
 b   Exit0        | b   Exit1        ;
 Fail0:           | Fail1:           ;
 li r5,0          | li r5,0          ;
 stw r5,0(r6)     | stw r5,0(r6)     ;
 Exit0:           | Exit1:           ;
exists
(ok=1 /\ 0:r1=1 /\ 1:r1=1)