PPC WRW+WR+addrra+syncpr
"RfePR DpAddrdWRA WseAP SyncdWRPR FreRP"
Cycle=RfePR DpAddrdWRA WseAP SyncdWRPR FreRP
Prefetch=0:x=T,1:y=W,2:y=F,2:x=T
Com=Rf Ws Fr
Orig=RfePR DpAddrdWRA WseAP SyncdWRPR FreRP
{ ok=1;
0:r2=x;
1:r2=x; 1:r5=y; 1:r7=ok;
2:r2=y; 2:r4=x;
}
P0 | P1 | P2 ;
li r1,1 | lwarx r1,r0,r2 | li r1,2 ;
stw r1,0(r2) | xor r3,r1,r1 | stw r1,0(r2) ;
| li r4,1 | sync ;
| lwarx %sta,r3,r5 | lwarx r3,r0,r4 ;
| stwcx. r4,r3,r5 | ;
| bne Fail1 | ;
| b Exit1 | ;
| Fail1: | ;
| li r6,0 | ;
| stw r6,0(r7) | ;
| Exit1: | ;
exists
(ok=1 /\ y=2 /\ 1:r1=1 /\ 2:r3=0)