PPC R+rfi-data+sync "Rfi DpDatadW Wse SyncdWR Fre" Prefetch=0:y=W,1:y=F,1:x=T Com=Ws Fr Orig=Rfi DpDatadW Wse SyncdWR Fre { 0:r2=x; 0:r5=y; 1:r2=y; 1:r4=x; } P0 | P1 ; li r1,1 | li r1,2 ; stw r1,0(r2) | stw r1,0(r2) ; lwz r3,0(r2) | sync ; xor r4,r3,r3 | lwz r3,0(r4) ; addi r4,r4,1 | ; stw r4,0(r5) | ; exists (y=2 /\ 0:r3=1 /\ 1:r3=0)