PPC ISA2+lwsync+eieio+lwsync
"LwSyncdWW Rfe EieiodRW Rfe LwSyncdRR Fre"
Cycle=Rfe LwSyncdRR Fre LwSyncdWW Rfe EieiodRW
{
0:r2=x; 0:r4=y;
1:r2=y; 1:r4=z;
2:r2=z; 2:r4=x;
}
P0 | P1 | P2 ;
li r1,1 | lwz r1,0(r2) | lwz r1,0(r2) ;
stw r1,0(r2) | eieio | lwsync ;
lwsync | li r3,1 | lwz r3,0(r4) ;
li r3,1 | stw r3,0(r4) | ;
stw r3,0(r4) | | ;
exists
(1:r1=1 /\ 2:r1=1 /\ 2:r3=0)