PPC safe224 "SyncdWW Rfe DpsR Fre Rfe SyncdRW Wse" Cycle=SyncdWW Rfe DpsR Fre Rfe SyncdRW Wse Relax= Safe=Fre Wse DpsR ACSyncdRW BCSyncdWW { 0:r2=x; 1:r2=x; 2:r2=x; 2:r4=y; 3:r2=y; 3:r4=x; } P0 | P1 | P2 | P3 ; lwz r1,0(r2) | li r1,2 | lwz r1,0(r2) | li r1,2 ; xor r3,r1,r1 | stw r1,0(r2) | sync | stw r1,0(r2) ; lwzx r4,r3,r2 | | li r3,1 | sync ; | | stw r3,0(r4) | li r3,1 ; | | | stw r3,0(r4) ; exists (x=2 /\ y=2 /\ 0:r1=1 /\ 0:r4=1 /\ 2:r1=2)