Test CO-RSDWI

AArch64 CO-RSDWI
"Extract uniproc violation from RSDWI"
Prefetch=0:z=W
{
%y0=y; %z0=z;
%z1=z;
}
 P0                    | P1            ;
 MOV W9,#1             | MOV W0,#2     ;
 STR W9,[X%z0]         | STR W0,[X%z1] ;
 LDR W0,[X%y0]         |               ;
 EOR W1,W0,W0          |               ;
 LDR W2,[X%z0,W1,SXTW] |               ;
 LDR W3,[X%z0]         |               ;
Observed
    z=2; 0:X3=1; 0:X2=2; 0:X0=0;