PPC SB+lwsyncpa+lwsyncap
"LwSyncdWRPA FreAA LwSyncdWRAP Fre"
Cycle=FreAA LwSyncdWRAP Fre LwSyncdWRPA
Prefetch=0:y=T,1:x=T
Com=Fr Fr
Orig=LwSyncdWRPA FreAA LwSyncdWRAP 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 r1,1 ;
stw r1,0(r2) | lwarx %sta,r0,r2 ;
lwsync | stwcx. r1,r0,r2 ;
lwarx r3,r0,r4 | bne Fail1 ;
stwcx. r3,r0,r4 | lwsync ;
bne Fail0 | lwz r3,0(r4) ;
b Exit0 | b Exit1 ;
Fail0: | Fail1: ;
li r5,0 | li r5,0 ;
stw r5,0(r6) | stw r5,0(r6) ;
Exit0: | Exit1: ;
exists
(ok=1 /\ 0:r3=0 /\ 1:r3=0)