PPC LB+isync+syncra "ISyncdRW RfePR SyncdRWRA RfeAP" Cycle=RfeAP ISyncdRW RfePR SyncdRWRA Prefetch= Com=Rf Rf Orig=ISyncdRW RfePR SyncdRWRA RfeAP { 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 ; isync | sync ; li r3,1 | li r3,1 ; stw r3,0(r4) | lwarx %sta,r0,r4 ; | stwcx. r3,r0,r4 ; | bne Fail1 ; | b Exit1 ; | Fail1: ; | li r5,0 ; | stw r5,0(r6) ; | Exit1: ; exists (ok=1 /\ 0:r1=1 /\ 1:r1=1)