// even if we can't use dest directly.
		return unsafe.Pointer(&_zero)
	}
	return nil
}

// FreeBSD and NetBSD implement their own syscalls to handle extended attributes

func Getxattr(file string, attr string, dest []byte) (sz int, err error) {
	d := initxattrdest(dest, 0)
	destsize := len(dest)

	nsid, a, err := xattrnamespace(attr)
	if err != nil {
		return -1, err
	}

void GroupByDialectPass::processFunction(
    mlir::func::FuncOp func, int& counter,
    llvm::SmallDenseSet<StringRef>& dialects, Operation* module) {
  // don't re-process functions we generated
  if (func->getAttr("dialect")) return;
  processRegion(func.getBody(), counter, dialects, module);
}

void GroupByDialectPass::processRegion(mlir::Region& region, int& counter,

        rewriter.getDenseI64ArrayAttr(kOihwToHwioPermutation));

    // [b, 0, 1, f]x[0, 1, i, o]->[b, 0, 1, f]
    const auto new_dimension_nums = rewriter.getAttr<ConvDimensionNumbersAttr>(
        /*inputBatchDimension=*/0, /*inputFeatureDimension=*/3,
        /*inputSpatialDimensions=*/SmallVector<int64_t>{1, 2},
        /*kernelInputFeatureDimension=*/2, /*kernelOutputFeatureDimension=*/3,

  mlir::OwningOpRef<mlir::ModuleOp> module_ref =
      mlir::ModuleOp::create(mlir::UnknownLoc::get(&context));

  AddDevicesToOp(*module_ref, /*device_set=*/nullptr);
  EXPECT_EQ((*module_ref)->getAttr("tf.devices"), nullptr);
}

TEST(DeviceUtilTest, GetDevicesFromOpNoDevicesAttribute) {
  mlir::MLIRContext context;
  mlir::OwningOpRef<mlir::ModuleOp> module_ref =