Test W+RW+R+WR+lwsync+sync

PPC W+RW+R+WR+lwsync+sync
"Rfe LwSyncdRW Rfe Fre SyncdWR Fre"
Prefetch=0:x=T,1:x=F,1:y=W,3:y=F,3:x=T
Com=Rf Rf Fr Fr
Orig=Rfe LwSyncdRW Rfe Fre SyncdWR 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) | lwz r1,0(r2) | li r1,2      ;
 stw r1,0(r2) | lwsync       |              | stw r1,0(r2) ;
              | li r3,1      |              | sync         ;
              | stw r3,0(r4) |              | lwz r3,0(r4) ;
exists
(y=2 /\ 1:r1=1 /\ 2:r1=1 /\ 3:r3=0)