Test WRC+ctrl+ctrlisyncrr

PPC WRC+ctrl+ctrlisyncrr
"Rfe DpCtrldW RfePR DpCtrlIsyncdRRR FreRP"
Cycle=Rfe DpCtrldW RfePR DpCtrlIsyncdRRR FreRP
Prefetch=0:x=T,2:x=T
Com=Rf Rf Fr
Orig=Rfe DpCtrldW RfePR DpCtrlIsyncdRRR FreRP
{
0:r2=x;
1:r2=x; 1:r4=y;
2:r2=y; 2:r4=x;
}
 P0           | P1           | P2             ;
 li r1,1      | lwz r1,0(r2) | lwarx r1,r0,r2 ;
 stw r1,0(r2) | cmpw r1,r1   | cmpw r1,r1     ;
              | beq  LC00    | beq  LC01      ;
              | LC00:        | LC01:          ;
              | li r3,1      | isync          ;
              | stw r3,0(r4) | lwarx r3,r0,r4 ;
exists
(1:r1=1 /\ 2:r1=1 /\ 2:r3=0)