// CHECK-SAME: device = "noodle"
  %3 = "tf.If"(%1, %2, %arg1) {then_branch = @add, else_branch = @sub, output_shapes = [#tf_type.shape<>], device = "noodle", _underscore_attr = "something", is_stateless = false} : (tensor<i1>, tensor<f32>, tensor<f32>) -> tensor<f32>

  // CHECK: %2 = "tf.If"
  %4 = "tf.If"(%arg2, %3, %arg1) {then_branch = @add, else_branch = @sub, is_stateless = false} : (tensor<i1>, tensor<f32>, tensor<f32>) -> tensor<f32>

  %0 = "tfl.dequantize"(%arg1) : (tensor<4x!quant.uniform<u8:f32, 1.0>>) -> tensor<4xf32>
  %1 = "tf.If"(%arg0, %0) {then_branch = @testIfThen, else_branch = @testIfElse, is_stateless = false} : (tensor<i1>, tensor<4xf32>) -> tensor<4xf32>
  %2 = "tfl.quantize"(%1) {qtype = tensor<4x!quant.uniform<u8:f32, 1.0>>} : (tensor<4xf32>) -> tensor<4x!quant.uniform<u8:f32, 1.0>>

    `tf.IfRegion` and `tf.While` is transformed to `tf.WhileRegion`.

    For example, this functional operation

    ```mlir
      %0 = "tf.If"(%arg0, %arg1) {
        then_branch = @then_branch_func, else_branch = @else_branch_func, is_stateless = false
      } : (tensor<i1>, tensor<*xf32>) -> tensor<*xf32>
    ```

    will be transformed into this region-based operation

    ```mlir

    %1 = "tf.If"(%arg0, %arg2) {Tcond = i1, Tin = ["tfdtype$DT_FLOAT"], Tout = ["tfdtype$DT_FLOAT"], _xla_propagate_compile_time_consts = true, device = "", else_branch = @reused_if_else_branch, is_stateless = true, name = "if", then_branch = @reused_if_then_branch}...

        mlir::SymbolRefAttr::get(builder.getContext(), func_names.at(else_idx));

    return llvm::SmallVector<mlir::NamedAttribute, 4>{
        builder.getNamedAttr("then_branch", then_attr),
        builder.getNamedAttr("else_branch", else_attr),
        // TODO(b/139667752): Analyze statelessness correctly
        builder.getNamedAttr("is_stateless", builder.getBoolAttr(false))};
  }
  if (auto* opts = options.AsWhileOptions()) {

LogicalResult IfOp::verifySymbolUses(SymbolTableCollection& symbol_table) {
  auto branch_name = [](unsigned index) -> std::string {
    return index == 0 ? "'then_branch'" : "'else_branch'";
  };
  return VerifyCaseOrIfOpBranchFunctions(
      symbol_table, *this, {getThenBranchAttr(), getElseBranchAttr()},
      branch_name);
}