PPC safe072 "SyncdWR Fre SyncdWR Fre SyncdWW Wse" Cycle=SyncdWR Fre SyncdWR Fre SyncdWW Wse Relax= Safe=Fre Wse SyncdWW SyncdWR { 0:r2=x; 0:r4=y; 1:r2=y; 1:r4=z; 2:r2=z; 2:r4=x; } P0 | P1 | P2 ; li r1,1 | li r1,1 | li r1,2 ; stw r1,0(r2) | stw r1,0(r2) | stw r1,0(r2) ; sync | sync | sync ; lwz r3,0(r4) | li r3,1 | lwz r3,0(r4) ; | stw r3,0(r4) | ; exists (z=2 /\ 0:r3=0 /\ 2:r3=0)