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