Test RW+RRpte-addr+DMBLD

AArch64 RW+RRpte-addr+DMBLD
TTHM=P0:HD
{
0:X1=x; 1:X1=x;
0:X3=y; 1:X3=y;
pte_x=(af:0);
1:X4=pte_x;
}
P0                  | P1             ;
LDR W0,[X1]         | LDR W2,[X3]    ;
EOR W4,W0,W0        | DMB LD         ;
MOV W2,#1           | L0: LDR X0,[X4];
STR W2,[X3,W4,SXTW] |                ;
exists (1:X0=(oa:PA(x), af:0) /\ 1:X2=1)