Test MP+dmb.sy+pos-ctrl-[ws-rf]-data-rfi

AArch64 MP+dmb.sy+pos-ctrl-[ws-rf]-data-rfi
"DMB.SYdWW Rfe PosRR DpCtrldW WsLeave RfBack DpDatadW Rfi Fre"
Cycle=Rfi Fre DMB.SYdWW Rfe PosRR DpCtrldW WsLeave RfBack DpDatadW
Relax=
Safe=Rfi Rfe Fre PosRR DMB.SYdWW DpDatadW DpCtrldW [WsLeave,RfBack]
Prefetch=0:x=F,0:y=W,1:y=F,1:x=T
Com=Rf Fr Rf
Orig=DMB.SYdWW Rfe PosRR DpCtrldW WsLeave RfBack DpDatadW Rfi Fre
{
0:X1=x; 0:X3=y;
1:X1=y; 1:X4=z; 1:X7=x;
2:X1=z;
}
 P0          | P1           | P2          ;
 MOV W0,#2   | LDR W0,[X1]  | MOV W0,#2   ;
 STR W0,[X1] | LDR W2,[X1]  | STR W0,[X1] ;
 DMB SY      | CBNZ W2,LC00 |             ;
 MOV W2,#1   | LC00:        |             ;
 STR W2,[X3] | MOV W3,#1    |             ;
             | STR W3,[X4]  |             ;
             | LDR W5,[X4]  |             ;
             | EOR W6,W5,W5 |             ;
             | ADD W6,W6,#1 |             ;
             | STR W6,[X7]  |             ;
             | LDR W8,[X7]  |             ;
Observed
    z=2; y=1; x=1; 1:X8=1; 1:X5=1; 1:X2=0; 1:X0=1;
and z=1; y=1; x=1; 1:X8=1; 1:X5=1; 1:X2=0; 1:X0=1;