Test IRIW+lwsyncpr+lwsync

PPC IRIW+lwsyncpr+lwsync
"Rfe LwSyncdRRPR FreRP Rfe LwSyncdRR Fre"
Cycle=Rfe LwSyncdRR Fre Rfe LwSyncdRRPR FreRP
Prefetch=0:x=T,1:y=T,2:y=T,3:x=T
Com=Rf Fr Rf Fr
Orig=Rfe LwSyncdRRPR FreRP Rfe LwSyncdRR Fre
{
0:r2=x;
1:r2=x; 1:r4=y;
2:r2=y;
3:r2=y; 3:r4=x;
}
 P0           | P1             | P2           | P3           ;
 li r1,1      | lwz r1,0(r2)   | li r1,1      | lwz r1,0(r2) ;
 stw r1,0(r2) | lwsync         | stw r1,0(r2) | lwsync       ;
              | lwarx r3,r0,r4 |              | lwz r3,0(r4) ;
exists
(1:r1=1 /\ 1:r3=0 /\ 3:r1=1 /\ 3:r3=0)