PPC safe066 "SyncdWW Rfe SyncdRW Rfe DpdR Fre SyncdWW Wse" Cycle=SyncdWW Rfe SyncdRW Rfe DpdR Fre SyncdWW Wse Relax= Safe=Fre Wse SyncdWW DpdR BCSyncdWW BCSyncdRW { 0:r2=x; 0:r4=y; 1:r2=y; 1:r5=z; 2:r2=z; 2:r4=a; 3:r2=a; 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 r3,1 | lwzx r4,r3,r5 | sync | sync ; stw r3,0(r4) | | li r3,1 | li r3,1 ; | | stw r3,0(r4) | stw r3,0(r4) ; exists (a=2 /\ 0:r1=1 /\ 1:r1=1 /\ 1:r4=0)