Operation* func_op = getOperation();

  auto walk_result = func_op->walk([&](Operation* op) {
    // Verify all uq and qint types are lowered.
    if (llvm::any_of(op->getOperandTypes(), IsQuantType) ||
        llvm::any_of(op->getResultTypes(), IsQuantType) ||
        IsTFUniformQuantizedOp(op) || IsMhloUniformQuantizedOp(*op)) {
      op->emitOpError("is illegal as it is a UQ op or contains uq/qint types");