Remark find_label_save_callee_save:
  forall lbl l ofs k,
  Mach.find_label lbl (save_callee_save_rec l ofs k) = Mach.find_label lbl k.Remark find_label_restore_callee_save:
  forall lbl l ofs k,
  Mach.find_label lbl (restore_callee_save_rec l ofs k) = Mach.find_label lbl k.

Lemma sig_preserved: forall f tf, transf_fundef f = OK tf -> Mach.funsig tf = Linear.funsig f.