PPC MP+popa+addrpa
"PodWWPA RfeAP DpAddrdRPA FreAP"
Cycle=RfeAP DpAddrdRPA FreAP PodWWPA
Prefetch=1:x=T
Com=Rf Fr
Orig=PodWWPA RfeAP DpAddrdRPA FreAP
{ ok=1;
0:r2=x; 0:r4=y; 0:r6=ok;
1:r2=y; 1:r5=x; 1:r7=ok;
}
P0 | P1 ;
li r1,1 | lwz r1,0(r2) ;
stw r1,0(r2) | xor r3,r1,r1 ;
li r3,1 | lwarx r4,r3,r5 ;
lwarx %sta,r0,r4 | stwcx. r4,r3,r5 ;
stwcx. r3,r0,r4 | bne Fail1 ;
bne Fail0 | b Exit1 ;
b Exit0 | Fail1: ;
Fail0: | li r6,0 ;
li r5,0 | stw r6,0(r7) ;
stw r5,0(r6) | Exit1: ;
Exit0: | ;
exists
(ok=1 /\ 1:r1=1 /\ 1:r4=0)