* typeck (type_for_mode): Only return TItype nodes when

        HOST_BITS_PER_WIDE_INT is >= 64 bits.
        (type_for_size): Similarly.
        * decl.c (intTI_type_node, unsigned_intTI_type_node): Only declare
        when HOST_BITS_PER_WIDE_INT is >= 64 bits.
        (init_decl_processing): Only create TItype nodes when
        HOST_BITS_PER_WIDE_INT is >= 64 bits.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@22914 138bc75d-0d04-0410-961f-82ee72b054a4