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I'm using gcc under Ubuntu/WSL on Windows, so it may be some compiler thing. But nevertheless, thank you for taking the time to follow up on this, because it i

I'm using gcc under Ubuntu/WSL on Windows, so it may be some compiler thing. But nevertheless, thank you for taking the time to follow up on this, because it is a very interesting subject to me personally and a lot has been learned through efforts such as yours, in this thread.

dzaima 4y ago
Windows/WSL shouldn't change anything, gcc will have the same set of optimizations everywhere. There's just no inlining of the functions going on. There may be differences in the dispatching between different compilers & optimization levels, but none inline functions from a function list. It'd be a pretty messy optimization, as it'd need to check whether all functions can be inlined instead of just any single one (and increase the requirements if the call otherwise would be a tail-call, which cost a decent bit less), and it'd make it impossible to predictably do an actual function jump table if the compiler sometimes just didn't.