PPC MP+lwsyncpa+isyncpa "LwSyncdWWPA RfeAP ISyncdRRPA FreAP" Cycle=RfeAP ISyncdRRPA FreAP LwSyncdWWPA Prefetch=1:x=T Com=Rf Fr Orig=LwSyncdWWPA RfeAP ISyncdRRPA FreAP { ok=1; 0:r2=x; 0:r4=y; 0:r6=ok; 1:r2=y; 1:r4=x; 1:r6=ok; } P0 | P1 ; li r1,1 | lwz r1,0(r2) ; stw r1,0(r2) | isync ; lwsync | lwarx r3,r0,r4 ; li r3,1 | stwcx. r3,r0,r4 ; lwarx %sta,r0,r4 | bne Fail1 ; stwcx. r3,r0,r4 | b Exit1 ; bne Fail0 | Fail1: ; b Exit0 | li r5,0 ; Fail0: | stw r5,0(r6) ; li r5,0 | Exit1: ; stw r5,0(r6) | ; Exit0: | ; exists (ok=1 /\ 1:r1=1 /\ 1:r3=0)