PPC MP+rfipr-datarp+sync "RfiPR DpDatadWRP Rfe SyncdRR Fre" Prefetch=1:x=T Com=Rf Fr Orig=RfiPR DpDatadWRP Rfe SyncdRR Fre { 0:r2=x; 0:r5=y; 1:r2=y; 1:r4=x; } P0 | P1 ; li r1,1 | lwz r1,0(r2) ; stw r1,0(r2) | sync ; lwarx r3,r0,r2 | lwz r3,0(r4) ; xor r4,r3,r3 | ; addi r4,r4,1 | ; stw r4,0(r5) | ; exists (0:r3=1 /\ 1:r1=1 /\ 1:r3=0)