PPC IRWIW+lwsync+addr "Rfe LwSyncdRW Wse Rfe DpAddrdW Wse" Cycle=Rfe LwSyncdRW Wse Rfe DpAddrdW Wse { 0:r2=x; 1:r2=x; 1:r4=y; 2:r2=y; 3:r2=y; 3:r5=x; } P0 | P1 | P2 | P3 ; li r1,2 | lwz r1,0(r2) | li r1,2 | lwz r1,0(r2) ; stw r1,0(r2) | lwsync | stw r1,0(r2) | xor r3,r1,r1 ; | li r3,1 | | li r4,1 ; | stw r3,0(r4) | | stwx r4,r3,r5 ; exists (x=2 /\ y=2 /\ 1:r1=2 /\ 3:r1=2)