Great to see this open sourced, and more work in the FDO/PGO space. I also like the access visualization heatmap: I'd done something similar before but didn't h

Great to see this open sourced, and more work in the FDO/PGO space. I also like the access visualization heatmap: I'd done something similar before but didn't have a big use for it yet, but showing how it improves access locality is killer.