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