Test NT-08-af

AArch64 NT-08-af
Variant=precise
TTHM=P0:HA
{
pte_x=(af:0);
x=1;
0:X2=x; 0:X4=y;
1:X2=x; 1:X4=y;
}
 P0          | P1          ;
 MOV W0,#2   | LDR W0,[X4] ;
 STR W0,[X2] | DMB LD      ;
 DMB ST      |L0:          ;
 MOV W1,#1   | LDR W1,[X2] ;
 STR W1,[X4] |             ;
exists (1:X0=1 /\ 1:X1=0 /\ fault(P1:L0,x,MMU:AccessFlag))