(* *********************************************************************)
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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 Asm generation: machine-independent framework *)
Require Intv.
(** * Processor registers and register states *)
Hint Extern 2 (_ <> _) => congruence: asmgen.

Lemma freg_of_eq:
forall r r', freg_of r = OK r' -> preg_of r = FR r'.