How can unstructured operators be lowered to the Linalg dialect?

[mollon650]

The Linalg dialect consists of structured ops, so for unstructured ops—such as resize, top-k, or sparse operators—it’s hard to leverage native Linalg features like tiling，can u give some suggestion about how to lower the unstructured operators？ Nhat Nguyen (@nhat-nguyen) Micah Weston (@red1bluelost)