PPC safe305 "SyncsWW Rfe DpdR Fre SyncsWW Rfe DpdR Fre" Cycle=SyncsWW Rfe DpdR Fre SyncsWW Rfe DpdR Fre Relax= Safe=Fre DpdR BCSyncsWW { 0:r2=y; 0:r5=x; 1:r2=x; 2:r2=x; 2:r5=y; 3:r2=y; } P0 | P1 | P2 | P3 ; lwz r1,0(r2) | li r1,1 | lwz r1,0(r2) | li r1,1 ; xor r3,r1,r1 | stw r1,0(r2) | xor r3,r1,r1 | stw r1,0(r2) ; lwzx r4,r3,r5 | sync | lwzx r4,r3,r5 | sync ; | li r3,2 | | li r3,2 ; | stw r3,0(r2) | | stw r3,0(r2) ; exists (x=2 /\ y=2 /\ 0:r1=2 /\ 0:r4=0 /\ 2:r1=2 /\ 2:r4=0)