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Some google searching brought up this. https://learn.microsoft.com/en-us/cpp/build/profile-guided-optimizations https://learn.microsoft.com/en-us/cpp/build/prof
by Cieric 2y ago
Some google searching brought up this. https://learn.microsoft.com/en-us/cpp/build/profile-guided-optimizations https://learn.microsoft.com/en-us/cpp/build/profile-guided-o...
I'm only reading over it now, but I'm going to test it out a bit when I can.
- dwattttt 2y agoPGO describes the using extra data to guide optimisations, but it doesn't define what those optimisations are. Reading the link, there's several that sound like they match what BOLT is applying (Basic Block Optimization, Function Layout, Conditional Branch Optimization, and Dead Code Separation).