PPC 2+2W+syncpa+poaa "SyncdWWPA WseAA PodWWAA WseAP" Cycle=WseAA PodWWAA WseAP SyncdWWPA Prefetch=0:x=F,0:y=W,1:y=F,1:x=W Com=Ws Ws Orig=SyncdWWPA WseAA PodWWAA WseAP { ok=1; 0:r2=x; 0:r4=y; 0:r6=ok; 1:r2=y; 1:r4=x; 1:r6=ok; } P0 | P1 ; li r1,2 | li r1,2 ; stw r1,0(r2) | lwarx %sta,r0,r2 ; sync | stwcx. r1,r0,r2 ; li r3,1 | bne Fail1 ; lwarx %sta,r0,r4 | li r3,1 ; stwcx. r3,r0,r4 | lwarx %sta,r0,r4 ; bne Fail0 | stwcx. r3,r0,r4 ; b Exit0 | bne Fail1 ; Fail0: | b Exit1 ; li r5,0 | Fail1: ; stw r5,0(r6) | li r5,0 ; Exit0: | stw r5,0(r6) ; | Exit1: ; exists (ok=1 /\ x=2 /\ y=2)