PPC MP+rfi-data+addr "Rfi DpDatadW Rfe DpAddrdR Fre" Prefetch=1:x=T Com=Rf Fr Orig=Rfi DpDatadW Rfe DpAddrdR Fre { 0:r2=x; 0:r5=y; 1:r2=y; 1:r5=x; } P0 | P1 ; li r1,1 | lwz r1,0(r2) ; stw r1,0(r2) | xor r3,r1,r1 ; lwz r3,0(r2) | lwzx r4,r3,r5 ; xor r4,r3,r3 | ; addi r4,r4,1 | ; stw r4,0(r5) | ; exists (0:r3=1 /\ 1:r1=1 /\ 1:r4=0)