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(*              The Compcert verified compiler                         *)
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(*          Xavier Leroy, INRIA Paris-Rocquencourt                     *)
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(*  Copyright Institut National de Recherche en Informatique et en     *)
(*  Automatique.  All rights reserved.  This file is distributed       *)
(*  under the terms of the INRIA Non-Commercial License Agreement.     *)
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(** Correctness proof for PPC generation: auxiliary results. *)
Local Transparent Archi.ptr64.
(** * Properties of low half/high half decomposition *)

Lemma low_high_u:
forall n, Int.or (Int.shl (high_u n) (Int.repr 16)) (low_u n) = n.