How to implement such a loop in assembler: FOR I:=1 TO 9 DO IF X[I] < 0 THEN AL:=AL+1?

Question

assembler

Here's what I have, maybe someone will tell you what's wrong or what to add, something is missing (it seems to me), and what I can't understand (don't judge strictly).
MOV SI,1
MOV CX,9
M1: MOV AL,ARRAY_X[SI]
CMP AL,0
JS M2
INC SI
M2: inc AL
LOOP M1

Answer 1

1. Do you place an array element in AL and increment it?
2. In this case, you can simply sum the sign bits in the elements. Something like this:

mov al, 0
mov si, 1
mov cx, 9
m1: 
mov bl, ARRAY_X[si]
shr bl, 7
add al, bl 
inc si
loop m1

Answer 2

MOVQ mm0, [ARRAY_X+1]
PMOVMSKB eax, mm0
POPCNT eax, eax