OpBuilder &builder) {
  auto broadcast_dims = GetI64ElementsAttr({feature_dim}, &builder);
  auto to_type = mlir::cast<RankedTensorType>(broadcast_to.getType());
  auto result_shape = builder.create<shape::ShapeOfOp>(loc, broadcast_to);
  auto result_extents_type = GetExtentsTensorTypeFor(to_type);
  auto result_extents = builder.create<shape::ToExtentTensorOp>(
      loc, result_extents_type, result_shape);