{pu : Lean.Compiler.LCNF.Purity} →
  {motive_4 : Lean.Compiler.LCNF.Code pu → Sort u} →
    (t : Lean.Compiler.LCNF.Code pu) →
      ((fvarId : Lean.FVarId) → motive_4 (Lean.Compiler.LCNF.Code.return fvarId)) →
        (Nat.hasNotBit 32 t.ctorIdx → motive_4 t) → motive_4 t