PPC safe141 "SyncdWW Rfe LwSyncdRW Wse LwSyncdWW Wse" Cycle=SyncdWW Rfe LwSyncdRW Wse LwSyncdWW Wse Relax= Safe=Wse LwSyncdWW LwSyncdRW BCSyncdWW { 0:r2=x; 0:r4=y; 1:r2=y; 1:r4=z; 2:r2=z; 2:r4=x; } P0 | P1 | P2 ; lwz r1,0(r2) | li r1,2 | li r1,2 ; lwsync | stw r1,0(r2) | stw r1,0(r2) ; li r3,1 | lwsync | sync ; stw r3,0(r4) | li r3,1 | li r3,1 ; | stw r3,0(r4) | stw r3,0(r4) ; exists (y=2 /\ z=2 /\ 0:r1=1)