PPC WRW+2W+addr+lwsyncaa
"Rfe DpAddrdW WsePA LwSyncdWWAA WseAP"
Cycle=Rfe DpAddrdW WsePA LwSyncdWWAA WseAP
Prefetch=0:x=F,1:y=W,2:y=F,2:x=W
Com=Rf Ws Ws
Orig=Rfe DpAddrdW WsePA LwSyncdWWAA WseAP
{ ok=1;
0:r2=x;
1:r2=x; 1:r5=y;
2:r2=y; 2:r4=x; 2:r6=ok;
}
P0 | P1 | P2 ;
li r1,2 | lwz r1,0(r2) | li r1,2 ;
stw r1,0(r2) | xor r3,r1,r1 | lwarx %sta,r0,r2 ;
| li r4,1 | stwcx. r1,r0,r2 ;
| stwx r4,r3,r5 | bne Fail2 ;
| | lwsync ;
| | li r3,1 ;
| | lwarx %sta,r0,r4 ;
| | stwcx. r3,r0,r4 ;
| | bne Fail2 ;
| | b Exit2 ;
| | Fail2: ;
| | li r5,0 ;
| | stw r5,0(r6) ;
| | Exit2: ;
exists
(ok=1 /\ x=2 /\ y=2 /\ 1:r1=2)