PPC acsdrw042 "Wse SyncdWR Fre SyncsWW Rfe SyncdRW" Cycle=Wse SyncdWR Fre SyncsWW Rfe SyncdRW Relax=ACSyncdRW Safe=Fre Wse SyncsWW SyncdWR { 0:r2=y; 0:r4=x; 1:r2=x; 2:r2=x; 2:r4=y; } P0 | P1 | P2 ; li r1,2 | li r1,1 | lwz r1,0(r2) ; stw r1,0(r2) | stw r1,0(r2) | sync ; sync | sync | li r3,1 ; lwz r3,0(r4) | li r3,2 | stw r3,0(r4) ; | stw r3,0(r2) | ; exists (x=2 /\ y=2 /\ 0:r3=0 /\ 2:r1=2)