Section PRESERVATION.
Variable prog: program.
Variable tprog: program.
Hypothesis TRANSF: match_prog prog tprog.
Let ge := globalenv prog.
Let tge := globalenv tprog.

(* Specifications: *)
Lemma comp_env_preserved:
genv_cenv tge = genv_cenv ge.
Lemma symbols_preserved:
forall (s: ident), Genv.find_symbol tge s = Genv.find_symbol ge s.