Test H8CX

AArch64 H8CX
{
0:X1=x; 0:X3=y;
1:X1=y; 1:X3=x; 1:X10=z;
}
P0           | P1                  ;
LDR W0,[X1]  | LDR W0,[X1]         ;
             | CMP W0,#0           ;
MOV W2,#1    | MOV W5,#1           ;
STLR W2,[X3] | MOV W6,#2           ;
             | CSEL W2,W5,W6,EQ    ;
             | LDR W4,[X10]        ;
             | EOR W9,W4,W4        ;
             | MOV W8,#7           ;
             | STR W8,[X3,W9,SXTW] ;
Observed
    1:X0=1; 0:X0=7;