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by uecker 16 days ago
It would also, but nobody cares enough because qsort is already fast enough for most things, and if you cared it is simply enough to do yourself. Are you doubting that C compilers can devirtualize function calls? Here is a small example that illustrates this. The compiler dervirtualizes all calls than folds the result: https://godbolt.org/z/E6cMMr8vx