PPC WRR+2W+lwsyncpa+lwsyncaa "Rfe LwSyncdRRPA FreAA LwSyncdWWAA WseAP" Cycle=Rfe LwSyncdRRPA FreAA LwSyncdWWAA WseAP Prefetch=0:x=F,1:y=T,2:x=W Com=Rf Fr Ws Orig=Rfe LwSyncdRRPA FreAA LwSyncdWWAA WseAP { ok=1; 0:r2=x; 1:r2=x; 1:r4=y; 1:r6=ok; 2:r2=y; 2:r4=x; 2:r6=ok; } P0 | P1 | P2 ; li r1,2 | lwz r1,0(r2) | li r1,1 ; stw r1,0(r2) | lwsync | lwarx %sta,r0,r2 ; | lwarx r3,r0,r4 | stwcx. r1,r0,r2 ; | stwcx. r3,r0,r4 | bne Fail2 ; | bne Fail1 | lwsync ; | b Exit1 | li r3,1 ; | Fail1: | lwarx %sta,r0,r4 ; | li r5,0 | stwcx. r3,r0,r4 ; | stw r5,0(r6) | bne Fail2 ; | Exit1: | b Exit2 ; | | Fail2: ; | | li r5,0 ; | | stw r5,0(r6) ; | | Exit2: ; exists (ok=1 /\ x=2 /\ 1:r1=2 /\ 1:r3=0)