Definition all_mregs :=
     R0  :: R1  :: R2  :: R3 :: R4  :: R5  :: R6  :: R7
  :: R8  :: R9  :: R10 :: R11 :: R12
  :: F0  :: F1  :: F2  :: F3  :: F4  :: F5  :: F6  :: F7
  :: F8  :: F9  :: F10 :: F11 :: F12 :: F13 :: F14 :: F15 :: nil.

(* Specifications: *)
Lemma all_mregs_complete: forall (r: mreg), In r all_mregs.