PPC LB+addrra+pora
"DpAddrdWRA RfeAR PodRWRA RfeAR"
Cycle=RfeAR PodRWRA RfeAR DpAddrdWRA
Prefetch=
Com=Rf Rf
Orig=DpAddrdWRA RfeAR PodRWRA RfeAR
{ ok=1;
0:r2=x; 0:r5=y; 0:r7=ok;
1:r2=y; 1:r4=x; 1:r6=ok;
}
P0 | P1 ;
lwarx r1,r0,r2 | lwarx r1,r0,r2 ;
xor r3,r1,r1 | li r3,1 ;
li r4,1 | lwarx %sta,r0,r4 ;
lwarx %sta,r3,r5 | stwcx. r3,r0,r4 ;
stwcx. r4,r3,r5 | bne Fail1 ;
bne Fail0 | b Exit1 ;
b Exit0 | Fail1: ;
Fail0: | li r5,0 ;
li r6,0 | stw r5,0(r6) ;
stw r6,0(r7) | Exit1: ;
Exit0: | ;
exists
(ok=1 /\ 0:r1=1 /\ 1:r1=1)