intros name τ''
case nil
α σ : Type
ε : σ → Type
α✝ σ✝ : Type
ε✝ : σ✝ → Type
δ : Dialect α✝ σ✝ ε✝
v v' : SSAVal
Hne : v' ≠ v
τ τ' : MLIRType δ
val : MLIRType.eval τ
val' : MLIRType.eval τ'
⊢ ∀ (name : SSAVal) (τ_1 : MLIRType δ),
    (if v' = name then
        if h : τ' = τ_1 then
          some
            (cast
              (_ :
                (match τ' with
                  | MLIRType.float a => Float
                  | MLIRType.int signedness sz => FinInt sz
                  | MLIRType.tensor1d => Tensor1D
                  | MLIRType.tensor2d => Tensor2D
                  | MLIRType.tensor4d => Tensor4D
                  | MLIRType.index => ℤ
                  | MLIRType.undefined a => Unit
                  | MLIRType.extended σ => ε✝ σ
                  | MLIRType.erased => Unit) =
                  match τ_1 with
                  | MLIRType.float a => Float
                  | MLIRType.int signedness sz => FinInt sz
                  | MLIRType.tensor1d => Tensor1D
                  | MLIRType.tensor2d => Tensor2D
                  | MLIRType.tensor4d => Tensor4D
                  | MLIRType.index => ℤ
                  | MLIRType.undefined a => Unit
                  | MLIRType.extended σ => ε✝ σ
                  | MLIRType.erased => Unit)
              val')
        else none
      else
        if v = name then
          if h : τ = τ_1 then
            some
              (cast
                (_ :
                  (match τ with
                    | MLIRType.float a => Float
                    | MLIRType.int signedness sz => FinInt sz
                    | MLIRType.tensor1d => Tensor1D
                    | MLIRType.tensor2d => Tensor2D
                    | MLIRType.tensor4d => Tensor4D
                    | MLIRType.index => ℤ
                    | MLIRType.undefined a => Unit
                    | MLIRType.extended σ => ε✝ σ
                    | MLIRType.erased => Unit) =
                    match τ_1 with
                    | MLIRType.float a => Float
                    | MLIRType.int signedness sz => FinInt sz
                    | MLIRType.tensor1d => Tensor1D
                    | MLIRType.tensor2d => Tensor2D
                    | MLIRType.tensor4d => Tensor4D
                    | MLIRType.index => ℤ
                    | MLIRType.undefined a => Unit
                    | MLIRType.extended σ => ε✝ σ
                    | MLIRType.erased => Unit)
                val)
          else none
        else none) =
      if v = name then
        if h : τ = τ_1 then
          some
            (cast
              (_ :
                (match τ with
                  | MLIRType.float a => Float
                  | MLIRType.int signedness sz => FinInt sz
                  | MLIRType.tensor1d => Tensor1D
                  | MLIRType.tensor2d => Tensor2D
                  | MLIRType.tensor4d => Tensor4D
                  | MLIRType.index => ℤ
                  | MLIRType.undefined a => Unit
                  | MLIRType.extended σ => ε✝ σ
                  | MLIRType.erased => Unit) =
                  match τ_1 with
                  | MLIRType.float a => Float
                  | MLIRType.int signedness sz => FinInt sz
                  | MLIRType.tensor1d => Tensor1D
                  | MLIRType.tensor2d => Tensor2D
                  | MLIRType.tensor4d => Tensor4D
                  | MLIRType.index => ℤ
                  | MLIRType.undefined a => Unit
                  | MLIRType.extended σ => ε✝ σ
                  | MLIRType.erased => Unit)
              val)
        else none
      else
        if v' = name then
          if h : τ' = τ_1 then
            some
              (cast
                (_ :
                  (match τ' with
                    | MLIRType.float a => Float
                    | MLIRType.int signedness sz => FinInt sz
                    | MLIRType.tensor1d => Tensor1D
                    | MLIRType.tensor2d => Tensor2D
                    | MLIRType.tensor4d => Tensor4D
                    | MLIRType.index => ℤ
                    | MLIRType.undefined a => Unit
                    | MLIRType.extended σ => ε✝ σ
                    | MLIRType.erased => Unit) =
                    match τ_1 with
                    | MLIRType.float a => Float
                    | MLIRType.int signedness sz => FinInt sz
                    | MLIRType.tensor1d => Tensor1D
                    | MLIRType.tensor2d => Tensor2D
                    | MLIRType.tensor4d => Tensor4D
                    | MLIRType.index => ℤ
                    | MLIRType.undefined a => Unit
                    | MLIRType.extended σ => ε✝ σ
                    | MLIRType.erased => Unit)
                val')
          else none
        else none
case nil
α σ : Type
ε : σ → Type
α✝ σ✝ : Type
ε✝ : σ✝ → Type
δ : Dialect α✝ σ✝ ε✝
v v' : SSAVal
Hne : v' ≠ v
τ τ' : MLIRType δ
val : MLIRType.eval τ
val' : MLIRType.eval τ'
name : SSAVal
τ'' : MLIRType δ
⊢ (if v' = name then
      if h : τ' = τ'' then
        some
          (cast
            (_ :
              (match τ' with
                | MLIRType.float a => Float
                | MLIRType.int signedness sz => FinInt sz
                | MLIRType.tensor1d => Tensor1D
                | MLIRType.tensor2d => Tensor2D
                | MLIRType.tensor4d => Tensor4D
                | MLIRType.index => ℤ
                | MLIRType.undefined a => Unit
                | MLIRType.extended σ => ε✝ σ
                | MLIRType.erased => Unit) =
                match τ'' with
                | MLIRType.float a => Float
                | MLIRType.int signedness sz => FinInt sz
                | MLIRType.tensor1d => Tensor1D
                | MLIRType.tensor2d => Tensor2D
                | MLIRType.tensor4d => Tensor4D
                | MLIRType.index => ℤ
                | MLIRType.undefined a => Unit
                | MLIRType.extended σ => ε✝ σ
                | MLIRType.erased => Unit)
            val')
      else none
    else
      if v = name then
        if h : τ = τ'' then
          some
            (cast
              (_ :
                (match τ with
                  | MLIRType.float a => Float
                  | MLIRType.int signedness sz => FinInt sz
                  | MLIRType.tensor1d => Tensor1D
                  | MLIRType.tensor2d => Tensor2D
                  | MLIRType.tensor4d => Tensor4D
                  | MLIRType.index => ℤ
                  | MLIRType.undefined a => Unit
                  | MLIRType.extended σ => ε✝ σ
                  | MLIRType.erased => Unit) =
                  match τ'' with
                  | MLIRType.float a => Float
                  | MLIRType.int signedness sz => FinInt sz
                  | MLIRType.tensor1d => Tensor1D
                  | MLIRType.tensor2d => Tensor2D
                  | MLIRType.tensor4d => Tensor4D
                  | MLIRType.index => ℤ
                  | MLIRType.undefined a => Unit
                  | MLIRType.extended σ => ε✝ σ
                  | MLIRType.erased => Unit)
              val)
        else none
      else none) =
    if v = name then
      if h : τ = τ'' then
        some
          (cast
            (_ :
              (match τ with
                | MLIRType.float a => Float
                | MLIRType.int signedness sz => FinInt sz
                | MLIRType.tensor1d => Tensor1D
                | MLIRType.tensor2d => Tensor2D
                | MLIRType.tensor4d => Tensor4D
                | MLIRType.index => ℤ
                | MLIRType.undefined a => Unit
                | MLIRType.extended σ => ε✝ σ
                | MLIRType.erased => Unit) =
                match τ'' with
                | MLIRType.float a => Float
                | MLIRType.int signedness sz => FinInt sz
                | MLIRType.tensor1d => Tensor1D
                | MLIRType.tensor2d => Tensor2D
                | MLIRType.tensor4d => Tensor4D
                | MLIRType.index => ℤ
                | MLIRType.undefined a => Unit
                | MLIRType.extended σ => ε✝ σ
                | MLIRType.erased => Unit)
            val)
      else none
    else
      if v' = name then
        if h : τ' = τ'' then
          some
            (cast
              (_ :
                (match τ' with
                  | MLIRType.float a => Float
                  | MLIRType.int signedness sz => FinInt sz
                  | MLIRType.tensor1d => Tensor1D
                  | MLIRType.tensor2d => Tensor2D
                  | MLIRType.tensor4d => Tensor4D
                  | MLIRType.index => ℤ
                  | MLIRType.undefined a => Unit
                  | MLIRType.extended σ => ε✝ σ
                  | MLIRType.erased => Unit) =
                  match τ'' with
                  | MLIRType.float a => Float
                  | MLIRType.int signedness sz => FinInt sz
                  | MLIRType.tensor1d => Tensor1D
                  | MLIRType.tensor2d => Tensor2D
                  | MLIRType.tensor4d => Tensor4D
                  | MLIRType.index => ℤ
                  | MLIRType.undefined a => Unit
                  | MLIRType.extended σ => ε✝ σ
                  | MLIRType.erased => Unit)
              val')
        else none
      else none