PPC safe153 "SyncdWW Rfe SyncsRW Rfe DpdR Fre LwSyncdWW Wse" Cycle=SyncdWW Rfe SyncsRW Rfe DpdR Fre LwSyncdWW Wse Relax= Safe=Fre Wse LwSyncdWW DpdR BCSyncsRW BCSyncdWW { 0:r2=x; 1:r2=x; 1:r5=y; 2:r2=y; 2:r4=z; 3:r2=z; 3:r4=x; } P0 | P1 | P2 | P3 ; lwz r1,0(r2) | lwz r1,0(r2) | li r1,1 | li r1,2 ; sync | xor r3,r1,r1 | stw r1,0(r2) | stw r1,0(r2) ; li r3,2 | lwzx r4,r3,r5 | lwsync | sync ; stw r3,0(r2) | | li r3,1 | li r3,1 ; | | stw r3,0(r4) | stw r3,0(r4) ; exists (x=2 /\ z=2 /\ 0:r1=1 /\ 1:r1=2 /\ 1:r4=0)