PPC podrr011
"Fre SyncsWW Rfe SyncdRW Rfe SyncsRW Rfe PodRR"
Cycle=Fre SyncsWW Rfe SyncdRW Rfe SyncsRW Rfe PodRR
Relax=PodRR
Safe=Fre BCSyncsWW BCSyncsRW BCSyncdRW
{
0:r2=y;
1:r2=y; 1:r4=x;
2:r2=x;
3:r2=x; 3:r4=y;
}
P0 | P1 | P2 | P3 ;
li r1,1 | lwz r1,0(r2) | lwz r1,0(r2) | lwz r1,0(r2) ;
stw r1,0(r2) | sync | sync | lwz r3,0(r4) ;
sync | li r3,1 | li r3,2 | ;
li r3,2 | stw r3,0(r4) | stw r3,0(r2) | ;
stw r3,0(r2) | | | ;
exists
(x=2 /\ y=2 /\ 1:r1=2 /\ 2:r1=1 /\ 3:r1=2 /\ 3:r3=0)