Test W+RW+RW+RR+sync+ctrl+ctrlisync

PPC W+RW+RW+RR+sync+ctrl+ctrlisync
"Rfe SyncdRW Rfe DpCtrldW Rfe DpCtrlIsyncdR Fre"
Prefetch=0:x=T,3:x=T
Com=Rf Rf Rf Fr
Orig=Rfe SyncdRW Rfe DpCtrldW Rfe DpCtrlIsyncdR Fre
{
0:r2=x;
1:r2=x; 1:r4=y;
2:r2=y; 2:r4=z;
3:r2=z; 3:r4=x;
}
 P0           | P1           | P2           | P3           ;
 li r1,1      | lwz r1,0(r2) | lwz r1,0(r2) | lwz r1,0(r2) ;
 stw r1,0(r2) | sync         | cmpw r1,r1   | cmpw r1,r1   ;
              | li r3,1      | beq  LC00    | beq  LC01    ;
              | stw r3,0(r4) | LC00:        | LC01:        ;
              |              | li r3,1      | isync        ;
              |              | stw r3,0(r4) | lwz r3,0(r4) ;
exists
(1:r1=1 /\ 2:r1=1 /\ 3:r1=1 /\ 3:r3=0)