PPC R+lwsyncpa+syncap
"LwSyncdWWPA WseAA SyncdWRAP Fre"
Cycle=Fre LwSyncdWWPA WseAA SyncdWRAP
Prefetch=0:y=W,1:y=F,1:x=T
Com=Ws Fr
Orig=LwSyncdWWPA WseAA SyncdWRAP Fre
{ 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 ;
stw r1,0(r2) | lwarx %sta,r0,r2 ;
lwsync | stwcx. r1,r0,r2 ;
li r3,1 | bne Fail1 ;
lwarx %sta,r0,r4 | sync ;
stwcx. r3,r0,r4 | lwz r3,0(r4) ;
bne Fail0 | b Exit1 ;
b Exit0 | Fail1: ;
Fail0: | li r5,0 ;
li r5,0 | stw r5,0(r6) ;
stw r5,0(r6) | Exit1: ;
Exit0: | ;
exists
(ok=1 /\ y=2 /\ 1:r3=0)