(* *********************************************************************)
(*                                                                     *)
(*              The Compcert verified compiler                         *)
(*                                                                     *)
(*                  Xavier Leroy, INRIA Paris                          *)
(*                                                                     *)
(*  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.     *)
(*                                                                     *)
(* *********************************************************************)
(** Correctness proof for x86-64 generation: auxiliary results. *)
Local Open Scope error_monad_scope.
(** * Correspondence between Mach registers and x86 registers *)

Lemma agree_nextinstr_nf:
forall ms sp rs,
agree ms sp rs -> agree ms sp (nextinstr_nf rs).