Test S+dmb.sy+pos-fri-rfi-addr-pos-addr

AArch64 S+dmb.sy+pos-fri-rfi-addr-pos-addr
"DMB.SYdWW Rfe PosRR Fri Rfi DpAddrdR PosRR DpAddrdW Wse"
Prefetch=0:x=F,0:y=W,1:y=F,1:x=W
Com=Rf Ws
Orig=DMB.SYdWW Rfe PosRR Fri Rfi DpAddrdR PosRR DpAddrdW Wse
{
0:X1=x; 0:X3=y;
1:X1=y; 1:X7=z; 1:X11=x;
}
 P0          | P1                    ;
 MOV W0,#2   | LDR W0,[X1]           ;
 STR W0,[X1] | LDR W2,[X1]           ;
 DMB SY      | MOV W3,#2             ;
 MOV W2,#1   | STR W3,[X1]           ;
 STR W2,[X3] | LDR W4,[X1]           ;
             | EOR W5,W4,W4          ;
             | LDR W6,[X7,W5,SXTW]   ;
             | LDR W8,[X7]           ;
             | EOR W9,W8,W8          ;
             | MOV W10,#1            ;
             | STR W10,[X11,W9,SXTW] ;
Observed
    y=2; x=1; 1:X4=2; 1:X2=0; 1:X0=1;