PPC MP+lwsync+ctrlrr "LwSyncdWW RfePR DpCtrldRRR FreRP" Cycle=RfePR DpCtrldRRR FreRP LwSyncdWW Prefetch=1:x=T Com=Rf Fr Orig=LwSyncdWW RfePR DpCtrldRRR FreRP { 0:r2=x; 0:r4=y; 1:r2=y; 1:r4=x; } P0 | P1 ; li r1,1 | lwarx r1,r0,r2 ; stw r1,0(r2) | cmpw r1,r1 ; lwsync | beq LC00 ; li r3,1 | LC00: ; stw r3,0(r4) | lwarx r3,r0,r4 ; exists (1:r1=1 /\ 1:r3=0)