I just gave it a whirl on one of my own programs, which runs the distribution of votes for Australian senate elections. In my particular case I didn't see a spe

I just gave it a whirl on one of my own programs, which runs the distribution of votes for Australian senate elections. In my particular case I didn't see a speedup (but it's a relatively simple program: perhaps the branching was already predictable enough.) It wasn't hard to try out, the docs are here (including using it via cargo): https://doc.rust-lang.org/rustc/profile-guided-optimization.html https://doc.rust-lang.org/rustc/profile-guided-optimization....