Test aclwdrr007

PPC aclwdrr007
"Fre LwSyncdWW Wse Rfe LwSyncdRR"
Cycle=Fre LwSyncdWW Wse Rfe LwSyncdRR
Relax=ACLwSyncdRR
Safe=Fre Wse LwSyncdWW
{
0:r2=y; 0:r4=x;
1:r2=x;
2:r2=x; 2:r4=y;
}
 P0           | P1           | P2           ;
 li r1,1      | li r1,2      | lwz r1,0(r2) ;
 stw r1,0(r2) | stw r1,0(r2) | lwsync       ;
 lwsync       |              | lwz r3,0(r4) ;
 li r3,1      |              |              ;
 stw r3,0(r4) |              |              ;
exists
(x=2 /\ 2:r1=2 /\ 2:r3=0)