Test WRC+ctrlrp+syncpr

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