PPC safe496 "SyncdWW Rfe DpsW Rfe SyncdRW Rfe SyncsRR Fre" Cycle=SyncdWW Rfe DpsW Rfe SyncdRW Rfe SyncsRR Fre Relax= Safe=Fre DpsW ACSyncsRR ACSyncdRW BCSyncdWW { 0:r2=x; 1:r2=x; 1:r4=y; 2:r2=y; 3:r2=y; 3:r4=x; } P0 | P1 | P2 | P3 ; lwz r1,0(r2) | lwz r1,0(r2) | lwz r1,0(r2) | li r1,2 ; xor r3,r1,r1 | sync | sync | stw r1,0(r2) ; li r4,2 | li r3,1 | lwz r3,0(r2) | sync ; stwx r4,r3,r2 | stw r3,0(r4) | | li r3,1 ; | | | stw r3,0(r4) ; exists (x=2 /\ y=2 /\ 0:r1=1 /\ 1:r1=2 /\ 2:r1=1 /\ 2:r3=1)