* builtins.c (std_gimplify_va_arg_expr): Handle types passed
        by reference.
        (ind_gimplify_va_arg_expr): Remove.
        * tree.h (ind_gimplify_va_arg_expr): Remove.
        * config/pa/pa.c (hppa_gimplify_va_arg_expr): Don't use it.
        * config/mmix/mmix.c (mmix_function_arg_pass_by_reference): Allow
        argsp to be null.

        * config/arc/arc.c (arc_gimplify_va_arg_expr): Remove.
        (TARGET_GIMPLIFY_VA_ARG_EXPR): Remove.
        * config/cris/cris.c, config/fr30/fr30.c, config/frv/frv.c,
        config/iq2000/iq2000.c, config/m32r/m32r.c, config/mmix/mmix.c,
        config/mn10300/mn10300.c, config/v850/v850.c: Similarly.

From-SVN: r84608