Identical Code Folding (ICF) optimization

[ufarooq]

Is there any existing pass related to Identical Code Folding (ICF) optimization? Or is anyone working on related ideas internally at Meta or outside? I would love to hear about it and contribute if there is any effort. A couple of relevant resources are listed below.

1. Identical Code Folding https://tetzank.github.io/posts/identical-code-folding/
2. Safe ICF: Pointer Safe and Unwinding Aware Identical Code Folding in Gold, Sriraman Tallam, Cary Coutant, Xinliang David Li, Chris Demetriou

Bests, Umar