{motive : Lean.Compiler.LCNF.NormFVarResult → Sort u} →
  ((fvarId : Lean.FVarId) → motive (Lean.Compiler.LCNF.NormFVarResult.fvar fvarId)) →
    motive Lean.Compiler.LCNF.NormFVarResult.erased → (t : Lean.Compiler.LCNF.NormFVarResult) → motive t