PPC MP+syncpa+popa
"SyncdWWPA RfeAP PodRRPA FreAP"
Cycle=RfeAP PodRRPA FreAP SyncdWWPA
Prefetch=1:x=T
Com=Rf Fr
Orig=SyncdWWPA RfeAP PodRRPA FreAP
{ ok=1;
0:r2=x; 0:r4=y; 0:r6=ok;
1:r2=y; 1:r4=x; 1:r6=ok;
}
P0 | P1 ;
li r1,1 | lwz r1,0(r2) ;
stw r1,0(r2) | lwarx r3,r0,r4 ;
sync | stwcx. r3,r0,r4 ;
li r3,1 | bne Fail1 ;
lwarx %sta,r0,r4 | b Exit1 ;
stwcx. r3,r0,r4 | Fail1: ;
bne Fail0 | li r5,0 ;
b Exit0 | stw r5,0(r6) ;
Fail0: | Exit1: ;
li r5,0 | ;
stw r5,0(r6) | ;
Exit0: | ;
exists
(ok=1 /\ 1:r1=1 /\ 1:r3=0)