Test R+sync+lwsyncpr

PPC R+sync+lwsyncpr
"SyncdWW Wse LwSyncdWRPR FreRP"
Cycle=FreRP SyncdWW Wse LwSyncdWRPR
Prefetch=0:y=W,1:y=F,1:x=T
Com=Ws Fr
Orig=SyncdWW Wse LwSyncdWRPR FreRP
{
0:r2=x; 0:r4=y;
1:r2=y; 1:r4=x;
}
 P0           | P1             ;
 li r1,1      | li r1,2        ;
 stw r1,0(r2) | stw r1,0(r2)   ;
 sync         | lwsync         ;
 li r3,1      | lwarx r3,r0,r4 ;
 stw r3,0(r4) |                ;
exists
(y=2 /\ 1:r3=0)