add_asm.cr

def add(a, b)
  asm("
    movl ($0), %eax
    addl ($1), %eax
    movl %eax, ($0)
  " :: "r"(pointerof(a)),"r"(pointerof(b)))
  a
end

x=12_i32
y=14_i32

#add(pointerof(x),pointerof(y))
puts add(x,y)