PPC Z6.3+lwsync+sync+lwsync "LwSyncdWW Wse SyncdWW Rfe LwSyncdRR Fre" Cycle=Rfe LwSyncdRR Fre LwSyncdWW Wse SyncdWW { 0:r2=x; 0:r4=y; 1:r2=y; 1:r4=z; 2:r2=z; 2:r4=x; } P0 | P1 | P2 ; li r1,1 | li r1,2 | lwz r1,0(r2) ; stw r1,0(r2) | stw r1,0(r2) | lwsync ; lwsync | sync | lwz r3,0(r4) ; li r3,1 | li r3,1 | ; stw r3,0(r4) | stw r3,0(r4) | ; exists (y=2 /\ 2:r1=1 /\ 2:r3=0)