PPC WRW+WR+syncpa+poap "Rfe SyncdRWPA WseAA PodWRAP Fre" Cycle=Rfe SyncdRWPA WseAA PodWRAP Fre Prefetch=0:x=T,1:y=W,2:y=F,2:x=T Com=Rf Ws Fr Orig=Rfe SyncdRWPA WseAA PodWRAP Fre { 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 r1,1 | lwz r1,0(r2) | li r1,2 ; stw r1,0(r2) | sync | lwarx %sta,r0,r2 ; | li r3,1 | stwcx. r1,r0,r2 ; | lwarx %sta,r0,r4 | bne Fail2 ; | stwcx. r3,r0,r4 | lwz r3,0(r4) ; | bne Fail1 | b Exit2 ; | b Exit1 | Fail2: ; | Fail1: | li r5,0 ; | li r5,0 | stw r5,0(r6) ; | stw r5,0(r6) | Exit2: ; | Exit1: | ; exists (ok=1 /\ y=2 /\ 1:r1=1 /\ 2:r3=0)