Test SB+lwsyncpr+lwsync

PPC SB+lwsyncpr+lwsync
"LwSyncdWRPR FreRP LwSyncdWR Fre"
Cycle=Fre LwSyncdWRPR FreRP LwSyncdWR
Prefetch=0:y=T,1:x=T
Com=Fr Fr
Orig=LwSyncdWRPR FreRP LwSyncdWR Fre
{
0:r2=x; 0:r4=y;
1:r2=y; 1:r4=x;
}
 P0             | P1           ;
 li r1,1        | li r1,1      ;
 stw r1,0(r2)   | stw r1,0(r2) ;
 lwsync         | lwsync       ;
 lwarx r3,r0,r4 | lwz r3,0(r4) ;
exists
(0:r3=0 /\ 1:r3=0)