import logging

def get_register_allocator(config):
    """
    Function that dynamically loads the requested register allocation module and returns its main function,
    to be used to perform it.
    """
    logging.debug('[RegisterAllocation] from {}.{} import {}'.format(config.module_location, config.module_name, config.allocation_function_name))

    # set absolute module name
    module_name = '{}.{}'.format(config.module_location, config.module_name)

    # import the corresponding module
    module = __import__(module_name, fromlist=[config.allocation_function_name])

    # return requested function
    return getattr(module, config.allocation_function_name)