declare i8* @malloc(i32) ; external function to allocate on heap

define i32* @create_array() nounwind {
  ; allocate heap memory for array of size 3
  %array_address = call i8* @malloc(i32 12)
  %array = bitcast i8* %array_address to i32*

  ; Compute the address of the second element of the array and save value 3 to that address
  %a = getelementptr i32* %array, i32 1
  store i32 3, i32* %a

  ; Compute the address of the third element of the array and save value 4 to that address
  %b = getelementptr i32* %array, i32 2
  store i32 4, i32* %b

  ; Load values of the second and third element of struct from their addresses
  %a_val = load i32, i32* %a, align 4
  %b_val = load i32, i32* %b, align 4
  %sum = add i32 %a_val, %b_val
  ret %array
}