(** ** Erased X86 machine is safe*)
From mathcomp.ssreflect Require Import ssreflect ssrbool ssrnat ssrfun eqtype seq fintype finfun.
Set Implicit Arguments.
(*NOTE: because of redefinition of [val], these imports must appear after Ssreflect eqtype.*)
Module InitialMemWD.

Lemma validblock_id_ren : forall (m : mem) (b : block),
id_ren m b ->  Mem.valid_block m b.