PPC safe284 "SyncdWR Fre Rfe SyncdRW Rfe SyncdRW Wse" Cycle=SyncdWR Fre Rfe SyncdRW Rfe SyncdRW Wse Relax= Safe=Fre Wse SyncdWR ACSyncdRW { 0:r2=x; 0:r4=y; 1:r2=y; 1:r4=z; 2:r2=z; 2:r4=x; 3:r2=x; } P0 | P1 | P2 | P3 ; lwz r1,0(r2) | lwz r1,0(r2) | li r1,2 | li r1,1 ; sync | sync | stw r1,0(r2) | stw r1,0(r2) ; li r3,1 | li r3,1 | sync | ; stw r3,0(r4) | stw r3,0(r4) | lwz r3,0(r4) | ; exists (z=2 /\ 0:r1=1 /\ 1:r1=1 /\ 2:r3=0)