Test 3.LB+lwsync+sync+lwsync

PPC 3.LB+lwsync+sync+lwsync
"LwSyncdRW Rfe SyncdRW Rfe LwSyncdRW Rfe"
Prefetch=
Com=Rf Rf Rf
Orig=LwSyncdRW Rfe SyncdRW Rfe LwSyncdRW Rfe
{
0:r2=x; 0:r4=y;
1:r2=y; 1:r4=z;
2:r2=z; 2:r4=x;
}
 P0           | P1           | P2           ;
 lwz r1,0(r2) | lwz r1,0(r2) | lwz r1,0(r2) ;
 lwsync       | sync         | lwsync       ;
 li r3,1      | li r3,1      | li r3,1      ;
 stw r3,0(r4) | stw r3,0(r4) | stw r3,0(r4) ;
exists
(0:r1=1 /\ 1:r1=1 /\ 2:r1=1)