PPC MP+lwsync+addr
"LwSyncdWW Rfe DpAddrdR Fre"
Cycle=Rfe DpAddrdR Fre LwSyncdWW
{
0:r2=x; 0:r4=y;
1:r2=y; 1:r5=x; 1:r6=2;
}
 P0           | P1            ;
 li r1,1      | lwz r1,0(r2)  ;
 stw r1,0(r2) | xor r3,r1,r1  ;
 lwsync       | lwzx r4,r3,r5 ;
 li r3,1      | stw r6,0(r4)  ;
 stw r3,0(r4) |               ;
exists
(1:r1=1 /\ 1:r4=0)
