Test LB+isyncra+syncrp

Executions for behaviour: "0:r1=1 ; 1:r1=1 ; ok=1"

PPC LB+isyncra+syncrp
"ISyncdRWRA RfeAR SyncdRWRP RfePR"
Cycle=RfeAR SyncdRWRP RfePR ISyncdRWRA
Prefetch=
Com=Rf Rf
Orig=ISyncdRWRA RfeAR SyncdRWRP RfePR
{ ok=1;
0:r2=x; 0:r4=y; 0:r6=ok;
1:r2=y; 1:r4=x;
}
 P0               | P1             ;
 lwarx r1,r0,r2   | lwarx r1,r0,r2 ;
 isync            | sync           ;
 li r3,1          | li r3,1        ;
 lwarx %sta,r0,r4 | stw r3,0(r4)   ;
 stwcx. r3,r0,r4  |                ;
 bne  Fail0       |                ;
 b   Exit0        |                ;
 Fail0:           |                ;
 li r5,0          |                ;
 stw r5,0(r6)     |                ;
 Exit0:           |                ;
Observed
    0:r1=1; 1:r1=1; ok=1;