Test LBNExpNExp+ExpNExp4

AArch64 LBNExpNExp+ExpNExp4
TTHM=HA HD
{
pte_x=(db:0,dbm:1);
0:X3=x;
1:X6=pte_x;
1:X4=(db:0,dbm:1,oa:phy_y);
x=1;
int y;
}
P0          | P1         ;
MOV W4,#2   | LDR X5,[X6];
STR W4,[X3] | STR X4,[X6];
            | LDR X7,[X6];
exists (1:X5=(oa:PA(x), dbm:1) /\ 1:X7=(oa:PA(y), dbm:1, db:0) /\ [x]=1 /\ [y]=2)