Test LB+ctrlrp+isync

PPC LB+ctrlrp+isync
"DpCtrldWRP Rfe ISyncdRW RfePR"
Cycle=Rfe ISyncdRW RfePR DpCtrldWRP
Prefetch=
Com=Rf Rf
Orig=DpCtrldWRP Rfe ISyncdRW RfePR
{
0:r2=x; 0:r4=y;
1:r2=y; 1:r4=x;
}
 P0             | P1           ;
 lwarx r1,r0,r2 | lwz r1,0(r2) ;
 cmpw r1,r1     | isync        ;
 beq  LC00      | li r3,1      ;
 LC00:          | stw r3,0(r4) ;
 li r3,1        |              ;
 stw r3,0(r4)   |              ;
exists
(0:r1=1 /\ 1:r1=1)