PPC safe139 "Rfe SyncdRR Fre LwSyncdWW Wse LwSyncdWW Wse" Cycle=Rfe SyncdRR Fre LwSyncdWW Wse LwSyncdWW Wse Relax= Safe=Fre Wse LwSyncdWW ACSyncdRR { 0:r2=z; 0:r4=x; 1:r2=x; 1:r4=y; 2:r2=y; 2:r4=z; 3:r2=z; } P0 | P1 | P2 | P3 ; lwz r1,0(r2) | li r1,1 | li r1,2 | li r1,2 ; sync | stw r1,0(r2) | stw r1,0(r2) | stw r1,0(r2) ; lwz r3,0(r4) | lwsync | lwsync | ; | li r3,1 | li r3,1 | ; | stw r3,0(r4) | stw r3,0(r4) | ; Observed 0:r1=1; 0:r3=0; y=2; z=1; and 0:r1=1; 0:r3=0; y=2; z=2; and 0:r1=2; 0:r3=0; y=2; z=2;