Mmm... maybe I'm mistaken. Thanks for the opportunity to reflect a bit more about this. I was remembering this video [0] which talks about Graph Embeddings. In the video, the speaker talks specifically about node classification. Assuming the classes are target functions, this could potentially be used for speculative devirtualization.

Definitely not an expert, just excited to have more tools on which to work with graph data!

[0] Graph Embeddings - Neo4J. Talk by Alicia Frame. https://www.youtube.com/watch?v=oQPCxwmBiWo