PPC bcssrw031 "LwSyncsRR DpdR SyncsRW Rfe LwSyncsRR DpdR SyncsRW Rfe" Cycle=LwSyncsRR DpdR SyncsRW Rfe LwSyncsRR DpdR SyncsRW Rfe Relax=BCSyncsRW Safe=LwSyncsRR DpdR { 0:r2=x; 0:r6=y; 1:r2=y; 1:r6=x; } P0 | P1 ; lwz r1,0(r2) | lwz r1,0(r2) ; lwsync | lwsync ; lwz r3,0(r2) | lwz r3,0(r2) ; xor r4,r3,r3 | xor r4,r3,r3 ; lwzx r5,r4,r6 | lwzx r5,r4,r6 ; sync | sync ; li r7,1 | li r7,1 ; stw r7,0(r6) | stw r7,0(r6) ; exists (0:r1=1 /\ 0:r3=1 /\ 0:r5=0 /\ 1:r1=1 /\ 1:r3=1 /\ 1:r5=0)