Run LB+sync+po in model, using ppcmem
PPC LB+sync+po "SyncdRW Rfe PodRW Rfe" Cycle=Rfe PodRW Rfe SyncdRW { 0:r2=x; 0:r4=y; 1:r2=y; 1:r4=x; } P0 | P1 ; lwz r1,0(r2) | lwz r1,0(r2) ; sync | li r3,1 ; li r3,1 | stw r3,0(r4) ; stw r3,0(r4) | ; exists (0:r1=1 /\ 1:r1=1)