PPC LB+po+poap "PodRW RfePA PodRWAP Rfe" Cycle=RfePA PodRWAP Rfe PodRW Prefetch= Com=Rf Rf Orig=PodRW RfePA PodRWAP Rfe { ok=1; 0:r2=x; 0:r4=y; 1:r2=y; 1:r4=x; 1:r6=ok; } P0 | P1 ; lwz r1,0(r2) | lwarx r1,r0,r2 ; li r3,1 | stwcx. r1,r0,r2 ; stw r3,0(r4) | bne Fail1 ; | li r3,1 ; | stw r3,0(r4) ; | b Exit1 ; | Fail1: ; | li r5,0 ; | stw r5,0(r6) ; | Exit1: ; exists (ok=1 /\ 0:r1=1 /\ 1:r1=1)