ifcvt.c (noce_get_condition): Check condition variable is not small_register_classes_for_mode_p before accepting.

2012-02-27  Stuart Henderson  <shenders@gcc.gnu.org>

    * ifcvt.c (noce_get_condition): Check condition variable is not
    small_register_classes_for_mode_p before accepting.

From-SVN: r184599