PPC LB+addrs "DpAddrdW Rfe DpAddrdW Rfe" Cycle=Rfe DpAddrdW Rfe DpAddrdW { 0:r2=x; 0:r5=y; 1:r2=y; 1:r5=x; 1:r6=z; 1:r7=1; } P0 | P1 ; lwz r1,0(r2) | lwz r1,0(r2) ; xor r3,r1,r1 | xor r3,r1,r1 ; li r4,1 | li r4,1 ; stwx r4,r3,r5 | stwx r4,r3,r6 ; | stw r7,0(r5) ; exists (0:r1=1 /\ 1:r1=1)