PPC safe272 "SyncdWR Fre SyncdWW Rfe LwSyncsRW Rfe SyncdRW Wse" Cycle=SyncdWR Fre SyncdWW Rfe LwSyncsRW Rfe SyncdRW Wse Relax= Safe=Fre Wse SyncdWR LwSyncsRW ACSyncdRW BCSyncdWW { 0:r2=x; 0:r4=y; 1:r2=y; 2:r2=y; 2:r4=z; 3:r2=z; 3:r4=x; } P0 | P1 | P2 | P3 ; li r1,1 | lwz r1,0(r2) | lwz r1,0(r2) | li r1,2 ; stw r1,0(r2) | lwsync | sync | stw r1,0(r2) ; sync | li r3,2 | li r3,1 | sync ; li r3,1 | stw r3,0(r2) | stw r3,0(r4) | lwz r3,0(r4) ; stw r3,0(r4) | | | ; exists (y=2 /\ z=2 /\ 1:r1=1 /\ 2:r1=2 /\ 3:r3=0)