* sh.c (sh_builtin_saveregs): Use get_varargs_alias_set.
        (sh_build_va_list, sh_va_start, sh_va_arg): New.
        * sh.h (BUILD_VA_LIST_TYPE): New.
        (EXPAND_BUILTIN_VA_START, EXPAND_BUILTIN_VA_ARG): New.

From-SVN: r29415