* mode-classes.def (MODE_POINTER_BOUNDS): New.
        * tree.def (POINTER_BOUNDS_TYPE): New.
        * genmodes.c (complete_mode): Support MODE_POINTER_BOUNDS.
        (POINTER_BOUNDS_MODE): New.
        (make_pointer_bounds_mode): New.
        * machmode.h (POINTER_BOUNDS_MODE_P): New.
        * stor-layout.c (int_mode_for_mode): Support MODE_POINTER_BOUNDS.
        (layout_type): Support POINTER_BOUNDS_TYPE.
        * tree-pretty-print.c (dump_generic_node): Support POINTER_BOUNDS_TYPE.
        * tree.c (build_int_cst_wide): Support POINTER_BOUNDS_TYPE.
        (type_contains_placeholder_1): Likewise.
        * tree.h (POINTER_BOUNDS_TYPE_P): New.
        * varasm.c (output_constant): Support POINTER_BOUNDS_TYPE.
        * doc/rtl.texi (MODE_POINTER_BOUNDS): New.

From-SVN: r204045