PPC LB0079
"DpDatadW Rfe PodRW PosWW Rfe"
Cycle=Rfe PodRW PosWW Rfe DpDatadW
Relax=[Rfe,DpDatadW,Rfe]
Safe=PosWW PodRW
Prefetch=0:x=F,0:y=W,1:y=F,1:x=W
Com=Rf Rf
Orig=DpDatadW Rfe PodRW PosWW Rfe
{
0:r2=x; 0:r4=y;
1:r2=y; 1:r4=x;
}
P0 | P1 ;
lwz r1,0(r2) | lwz r1,0(r2) ;
xor r3,r1,r1 | li r3,1 ;
addi r3,r3,1 | stw r3,0(r4) ;
stw r3,0(r4) | li r5,2 ;
| stw r5,0(r4) ;
Observed
0:r1=1; 1:r1=1; x=2;
and 0:r1=2; 1:r1=1; x=2;