PPC WWC+addraa+addrra
"RfePA DpAddrdWAA RfeAR DpAddrdWRA WseAP"
Cycle=RfeAR DpAddrdWRA WseAP RfePA DpAddrdWAA
Prefetch=0:x=F,2:x=W
Com=Rf Rf Ws
Orig=RfePA DpAddrdWAA RfeAR DpAddrdWRA WseAP
{ ok=1;
0:r2=x;
1:r2=x; 1:r5=y; 1:r7=ok;
2:r2=y; 2:r5=x; 2:r7=ok;
}
P0 | P1 | P2 ;
li r1,2 | lwarx r1,r0,r2 | lwarx r1,r0,r2 ;
stw r1,0(r2) | stwcx. r1,r0,r2 | xor r3,r1,r1 ;
| bne Fail1 | li r4,1 ;
| xor r3,r1,r1 | lwarx %sta,r3,r5 ;
| li r4,1 | stwcx. r4,r3,r5 ;
| lwarx %sta,r3,r5 | bne Fail2 ;
| stwcx. r4,r3,r5 | b Exit2 ;
| bne Fail1 | Fail2: ;
| b Exit1 | li r6,0 ;
| Fail1: | stw r6,0(r7) ;
| li r6,0 | Exit2: ;
| stw r6,0(r7) | ;
| Exit1: | ;
exists
(ok=1 /\ x=2 /\ 1:r1=2 /\ 2:r1=1)