Test 3.LB+dmb.st+dmb.st+ctrl

AArch64 3.LB+dmb.st+dmb.st+ctrl
"DMB.STdRW Rfe DMB.STdRW Rfe DpCtrldW Rfe"
Cycle=Rfe DMB.STdRW Rfe DMB.STdRW Rfe DpCtrldW
Relax=
Safe=Rfe DMB.STdRW DpCtrldW
Prefetch=0:x=F,0:y=W,1:y=F,1:z=W,2:z=F,2:x=W
Com=Rf Rf Rf
Orig=DMB.STdRW Rfe DMB.STdRW Rfe DpCtrldW Rfe
{
0:X1=x; 0:X3=y;
1:X1=y; 1:X3=z;
2:X1=z; 2:X3=x;
}
 P0          | P1          | P2           ;
 LDR W0,[X1] | LDR W0,[X1] | LDR W0,[X1]  ;
 DMB ST      | DMB ST      | CBNZ W0,LC00 ;
 MOV W2,#1   | MOV W2,#1   | LC00:        ;
 STR W2,[X3] | STR W2,[X3] | MOV W2,#1    ;
             |             | STR W2,[X3]  ;
Observed
    2:X0=1; 1:X0=1; 0:X0=1;