'Get an instance of the class that will extract floating-point/integral args correctly.
:param arch:        The Archinfo arch for this CC
:param fp_args:     A list, with one entry for each argument the function can take. True if the argument is fp,
false if it is integral.
:param ret_fp:      True if the return value for the function is fp.
:param sizes:       Optional: A list, with one entry for each argument the function can take. Each entry is the
size of the corresponding argument in bytes.
:param sp_delta:    The amount the stack pointer changes over the course of this function - CURRENTLY UNUSED
:parmm func_ty:     A SimType for the function itself'

@classmethod
def from_arg_kinds(cls, arch, fp_args, ret_fp=False, sizes=None, sp_delta=None, func_ty=None):

    basic = cls(arch, sp_delta=sp_delta, func_ty=func_ty)
    basic.args = basic.arg_locs(fp_args, sizes)
    basic.ret_val = (basic.fp_return_val if ret_fp else basic.return_val)
    return basic
