PPC safe464 "LwSyncdWW Rfe SyncsRR Fre SyncdWW Rfe LwSyncdRR Fre" Cycle=LwSyncdWW Rfe SyncsRR Fre SyncdWW Rfe LwSyncdRR Fre Relax= Safe=Fre LwSyncdWW LwSyncdRR ACSyncsRR BCSyncdWW { 0:r2=x; 1:r2=x; 1:r4=y; 2:r2=y; 2:r4=z; 3:r2=z; 3:r4=x; } P0 | P1 | P2 | P3 ; lwz r1,0(r2) | li r1,2 | lwz r1,0(r2) | li r1,1 ; sync | stw r1,0(r2) | lwsync | stw r1,0(r2) ; lwz r3,0(r2) | sync | lwz r3,0(r4) | lwsync ; | li r3,1 | | li r3,1 ; | stw r3,0(r4) | | stw r3,0(r4) ; Observed 0:r1=0; 0:r3=0; 2:r1=1; 2:r3=0; x=2; and 0:r1=0; 0:r3=1; 2:r1=1; 2:r3=0; x=2; and 0:r1=0; 0:r3=2; 2:r1=1; 2:r3=0; x=2; and 0:r1=1; 0:r3=2; 2:r1=1; 2:r3=0; x=2; and 0:r1=2; 0:r3=2; 2:r1=1; 2:r3=0; x=2;