return {};
}

//===----------------------------------------------------------------------===//
// NoValueOp
//===----------------------------------------------------------------------===//

OpFoldResult NoValueOp::fold(FoldAdaptor) { return getValueAttr(); }

bool NoValueOp::isBuildableWith(Attribute value, Type type) {
  return value.isa<UnitAttr>() && type.isa<NoneType>();
}

static bool IsConst(Operation* op) {
  return isa<mlir::func::ConstantOp, mlir::arith::ConstantOp, mlir::TF::ConstOp,
             tfl::ConstOp, tfl::QConstOp, tfl::SparseConstOp,
             tfl::SparseQConstOp, mlir::TFL::NoValueOp,
             mlir::stablehlo::ConstantOp, mlir::vhlo::ConstantOpV1>(op);
}

static bool IsTFResourceOp(Operation* op) {
  for (const auto& operand : op->getOperands()) {