PPC W+RW+WR+WW+poaas+A
"RfeAA PodRWAA WseAA PodWRAA FreAA PodWWAA WseAA"
Prefetch=0:x=F,1:y=W,2:y=F,2:z=T,3:x=W
Com=Rf Ws Fr Ws
Orig=RfeAA PodRWAA WseAA PodWRAA FreAA PodWWAA WseAA
{ ok=1;
0:r2=x; 0:r4=ok;
1:r2=x; 1:r4=y; 1:r6=ok;
2:r2=y; 2:r4=z; 2:r6=ok;
3:r2=z; 3:r4=x; 3:r6=ok;
}
P0 | P1 | P2 | P3 ;
li r1,2 | lwarx r1,r0,r2 | li r1,2 | li r1,1 ;
lwarx %sta,r0,r2 | stwcx. r1,r0,r2 | lwarx %sta,r0,r2 | lwarx %sta,r0,r2 ;
stwcx. r1,r0,r2 | bne Fail1 | stwcx. r1,r0,r2 | stwcx. r1,r0,r2 ;
bne Fail0 | li r3,1 | bne Fail2 | bne Fail3 ;
b Exit0 | lwarx %sta,r0,r4 | lwarx r3,r0,r4 | li r3,1 ;
Fail0: | stwcx. r3,r0,r4 | stwcx. r3,r0,r4 | lwarx %sta,r0,r4 ;
li r3,0 | bne Fail1 | bne Fail2 | stwcx. r3,r0,r4 ;
stw r3,0(r4) | b Exit1 | b Exit2 | bne Fail3 ;
Exit0: | Fail1: | Fail2: | b Exit3 ;
| li r5,0 | li r5,0 | Fail3: ;
| stw r5,0(r6) | stw r5,0(r6) | li r5,0 ;
| Exit1: | Exit2: | stw r5,0(r6) ;
| | | Exit3: ;
~exists
(ok=1 /\ x=2 /\ y=2 /\ 1:r1=2 /\ 2:r3=0)