PPC WRW+2W+popa+poaa+A "RfeAP PodRWPA WseAA PodWWAA WseAA" Cycle=RfeAP PodRWPA WseAA PodWWAA WseAA Prefetch=0:x=F,1:y=W,2:y=F,2:x=W Com=Rf Ws Ws Orig=RfeAP PodRWPA WseAA PodWWAA WseAA { ok=1; 0:r2=x; 0:r4=ok; 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 r1,2 ; lwarx %sta,r0,r2 | li r3,1 | lwarx %sta,r0,r2 ; stwcx. r1,r0,r2 | lwarx %sta,r0,r4 | stwcx. r1,r0,r2 ; bne Fail0 | stwcx. r3,r0,r4 | bne Fail2 ; b Exit0 | bne Fail1 | li r3,1 ; Fail0: | b Exit1 | lwarx %sta,r0,r4 ; li r3,0 | Fail1: | stwcx. r3,r0,r4 ; stw r3,0(r4) | li r5,0 | bne Fail2 ; Exit0: | stw r5,0(r6) | b Exit2 ; | Exit1: | Fail2: ; | | li r5,0 ; | | stw r5,0(r6) ; | | Exit2: ; exists (ok=1 /\ x=2 /\ y=2 /\ 1:r1=2)