PPC ISA2+poaas
"PodWWAA RfeAA PodRWAA RfeAA PodRRAA FreAA"
Prefetch=2:x=T
Com=Rf Rf Fr
Orig=PodWWAA RfeAA PodRWAA RfeAA PodRRAA FreAA
{ ok=1;
0:r2=x; 0:r4=y; 0:r6=ok;
1:r2=y; 1:r4=z; 1:r6=ok;
2:r2=z; 2:r4=x; 2:r6=ok;
}
P0 | P1 | P2 ;
li r1,1 | lwarx r1,r0,r2 | lwarx r1,r0,r2 ;
lwarx %sta,r0,r2 | stwcx. r1,r0,r2 | stwcx. r1,r0,r2 ;
stwcx. r1,r0,r2 | bne Fail1 | bne Fail2 ;
bne Fail0 | li r3,1 | lwarx r3,r0,r4 ;
li r3,1 | lwarx %sta,r0,r4 | stwcx. r3,r0,r4 ;
lwarx %sta,r0,r4 | stwcx. r3,r0,r4 | bne Fail2 ;
stwcx. r3,r0,r4 | bne Fail1 | b Exit2 ;
bne Fail0 | b Exit1 | Fail2: ;
b Exit0 | Fail1: | li r5,0 ;
Fail0: | li r5,0 | stw r5,0(r6) ;
li r5,0 | stw r5,0(r6) | Exit2: ;
stw r5,0(r6) | Exit1: | ;
Exit0: | | ;
~exists
(ok=1 /\ 1:r1=1 /\ 2:r1=1 /\ 2:r3=0)