PPC Z6.0+lwsync+lwsync+sync "LwSyncdWW Rfe LwSyncdRW Wse SyncdWR Fre" Cycle=Rfe LwSyncdRW Wse SyncdWR Fre LwSyncdWW { 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) | li r1,2 ; stw r1,0(r2) | lwsync | stw r1,0(r2) ; lwsync | li r3,1 | sync ; li r3,1 | stw r3,0(r4) | lwz r3,0(r4) ; stw r3,0(r4) | | ; exists (z=2 /\ 1:r1=1 /\ 2:r3=0)