PPC WRR+2W+sync+lwsyncpa
"Rfe SyncdRR Fre LwSyncdWWPA WseAP"
Cycle=Rfe SyncdRR Fre LwSyncdWWPA WseAP
Prefetch=0:x=F,1:y=T,2:x=W
Com=Rf Fr Ws
Orig=Rfe SyncdRR Fre LwSyncdWWPA WseAP
{ ok=1;
0:r2=x;
1:r2=x; 1:r4=y;
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) | sync | stw r1,0(r2) ;
| lwz r3,0(r4) | lwsync ;
| | li r3,1 ;
| | lwarx %sta,r0,r4 ;
| | stwcx. r3,r0,r4 ;
| | bne Fail2 ;
| | b Exit2 ;
| | Fail2: ;
| | li r5,0 ;
| | stw r5,0(r6) ;
| | Exit2: ;
exists
(ok=1 /\ x=2 /\ 1:r1=2 /\ 1:r3=0)