Test LB+syncra+poap

PPC LB+syncra+poap
"SyncdRWRA RfeAA PodRWAP RfePR"
Cycle=RfeAA PodRWAP RfePR SyncdRWRA
Prefetch=
Com=Rf Rf
Orig=SyncdRWRA RfeAA PodRWAP RfePR
{ ok=1;
0:r2=x; 0:r4=y; 0:r6=ok;
1:r2=y; 1:r4=x; 1:r6=ok;
}
 P0               | P1              ;
 lwarx r1,r0,r2   | lwarx r1,r0,r2  ;
 sync             | stwcx. r1,r0,r2 ;
 li r3,1          | bne  Fail1      ;
 lwarx %sta,r0,r4 | li r3,1         ;
 stwcx. r3,r0,r4  | stw r3,0(r4)    ;
 bne  Fail0       | b   Exit1       ;
 b   Exit0        | Fail1:          ;
 Fail0:           | li r5,0         ;
 li r5,0          | stw r5,0(r6)    ;
 stw r5,0(r6)     | Exit1:          ;
 Exit0:           |                 ;
exists
(ok=1 /\ 0:r1=1 /\ 1:r1=1)