PPC bclwsww003 "DpdW Wse SyncdWR Fre LwSyncsWW Rfe" Cycle=DpdW Wse SyncdWR Fre LwSyncsWW Rfe Relax=BCLwSyncsWW Safe=Fre Wse SyncdWR DpdW { 0:r2=x; 0:r4=y; 1:r2=y; 2:r2=y; 2:r5=x; } P0 | P1 | P2 ; li r1,2 | li r1,1 | lwz r1,0(r2) ; stw r1,0(r2) | stw r1,0(r2) | xor r3,r1,r1 ; sync | lwsync | li r4,1 ; lwz r3,0(r4) | li r3,2 | stwx r4,r3,r5 ; | stw r3,0(r2) | ; exists (x=2 /\ y=2 /\ 0:r3=0 /\ 2:r1=2)