Section CORRECTNESS.
Variable prog: CminorSel.program.
Variable tprog: RTL.program.
Hypothesis TRANSL: transl_program prog = OK tprog.
Let ge : CminorSel.genv := Genv.globalenv prog.
Let tge : RTL.genv := Genv.globalenv tprog.
(** Relationship between the global environments for the original CminorSel program and the generated RTL program. *)

Lemma symbols_preserved:
forall (s: ident), Genv.find_symbol tge s = Genv.find_symbol ge s.