TypeID::get<mlir::TF::WhereOp>(),
          TypeID::get<mlir::TF::XlaSetDynamicDimensionSizeOp>(),
      };
  return *ops;
}

}  // namespace

bool HasTf2XlaFallback(const TypeID& type_id) {
  return IsOpTypeAllowedTf2XlaFallback(type_id) ||
         IsOpTypeAllowedTf2XlaPreferred(type_id);
}

bool IsOpLegalizedWithMlir(Operation& op) {

  if (HasStringResult(op)) return false;
  if (MatchesPattern(op, supported_ops)) return true;

  auto abstractOp = op.getRegisteredInfo();
  if (!abstractOp) return false;
  return mlir::mhlo::HasTf2XlaFallback(abstractOp->getTypeID());
}

bool IsVariant(Value value) {
  return mlir::isa<mlir::TF::VariantType>(
      getElementTypeOrSelf(value.getType()));
}

bool HasOutsideCompiledAncestor(Operation* op) {