PPC R+lwsyncaa+popa
"LwSyncdWWAA WseAP PodWRPA FreAA"
Cycle=FreAA LwSyncdWWAA WseAP PodWRPA
Prefetch=0:y=W,1:y=F,1:x=T
Com=Ws Fr
Orig=LwSyncdWWAA WseAP PodWRPA FreAA
{ 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 | li r1,2 ;
lwarx %sta,r0,r2 | stw r1,0(r2) ;
stwcx. r1,r0,r2 | lwarx r3,r0,r4 ;
bne Fail0 | stwcx. r3,r0,r4 ;
lwsync | bne Fail1 ;
li r3,1 | b Exit1 ;
lwarx %sta,r0,r4 | Fail1: ;
stwcx. r3,r0,r4 | li r5,0 ;
bne Fail0 | stw r5,0(r6) ;
b Exit0 | Exit1: ;
Fail0: | ;
li r5,0 | ;
stw r5,0(r6) | ;
Exit0: | ;
exists
(ok=1 /\ y=2 /\ 1:r3=0)