// Create new ConstantOp-ConvertOp-Operation sequences. At this moment,
      // old ConstantOp is guaranteed to have one F32->F16 convert op regardless
      // of its number of users.
      rewriter.setInsertionPointAfter(op);
      // create new F16 constant op in that location
      ConstantOp new_const = rewriter.create<ConstantOp>(

    return {0, 2, 3, 1};
  } else {
    return {};
  }
}

// Shuffle elements in the `attr` according to the permutation. Optional
// `inner_size` allows to shuffle array attributes created from rank 2 tensors
// on outer dimension only.
ArrayAttr ShuffleArrayAttr(ArrayAttr attr, ArrayRef<int64_t> permutation,
                           int inner_size) {
  if (attr.empty()) return attr;

      }
    }
  });
}

// Creates an instance of the default quant parameters pass.
std::unique_ptr<OperationPass<func::FuncOp>> CreateImportQuantStatsPass(
    OperationToName op_to_name, const std::string &stats_str) {
  auto pass = std::make_unique<ImportQuantStatsPass>(op_to_name);
  if (pass->ParseQuantStats(stats_str)) return nullptr;
  return pass;
}

constexpr char kXlaOutsideCompilationAttr[] = "_xla_outside_compilation";

bool HasOutsideCompilationAttribute(Operation* op) {
  return op->getAttrOfType<StringAttr>(kXlaOutsideCompilationAttr) != nullptr;
}

// Finds op that created a given value. If the value is a BlockArgument, this
// returns the owner of the Block.
Operation* GetOpOfValue(Value value) {
  if (auto block_arg = mlir::dyn_cast<BlockArgument>(value))

  auto builder = OpBuilder::atBlockTerminator(&main_graph_op.GetBody());
  // Create an IslandOp that will wrap the IdentityOp. Add a control dependency
  // for the newly copied save function.
  auto wrapper_island_op = builder.create<IslandOp>(
      name_loc, TypeRange{main_file_prefix_arg.getType()},
      tf_executor::ControlType::get(&ctx), ValueRange(control_inputs));

  const std::string dump_file_path =
      tsl::io::JoinPath(*dump_dir, dump_file_name);
  TF_ASSIGN_OR_RETURN(std::unique_ptr<llvm::raw_ostream> file,
                      WritableFileWrapper::Create(dump_file_path));

  LOG(INFO) << "IR dump file created: " << dump_file_path;
  return file;
}

class PrinterConfig : public mlir::PassManager::IRPrinterConfig {
 public:
  explicit PrinterConfig(

    auto begin_op =
        rewriter.create<arith::ConstantOp>(op->getLoc(), type, begin_attr);
    auto end_attr = DenseElementsAttr::get<int32_t>(type, padded_end);
    auto end_op =
        rewriter.create<arith::ConstantOp>(op->getLoc(), type, end_attr);
    auto stride_attr = DenseElementsAttr::get<int32_t>(type, padded_stride);
    auto stride_op =
        rewriter.create<arith::ConstantOp>(op->getLoc(), type, stride_attr);

    // If the op is rewritten, FusedLoc can be created.
    for (Location child_loc : mlir::cast<FusedLoc>(loc).getLocations()) {
      std::optional<QuantizationUnitLoc::QuantizationUnit> found_unit =
          FindQuantizationUnitFromLoc(child_loc);
      if (found_unit.has_value()) return found_unit;
    }
  } else if (isa<CallSiteLoc>(loc)) {
    // If the graph is inlined, CallSiteLoc can be created.
    return FindQuantizationUnitFromLoc(

  OpBuilder builder(merged_island.insert_point);
  auto new_island = builder.create<IslandOp>(
      merged_island.insert_point->getLoc(), result_types, operands);
  new_island.getBody().push_back(new Block);
  return new_island;
}

// Creates respective YieldOp for the new merged island.
YieldOp CreateNewIslandYieldOp(IslandOp new_island,

    const Type expressed_type = value.getType();
    // The value needs to be requantized. A Quantize op will be created to use
    // it as the operand and replace its uses.
    const Type new_type = state.params.castFromExpressedType(expressed_type);
    if (!new_type) return;
    auto requantize_op =
        builder_.create<quantfork::QuantizeCastOp>(loc, new_type, value);
    value.replaceAllUsesWith(requantize_op);