Re: [boost] determining if an object is faster to pass by value or const reference

Philippe Vaucher skrev:

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In general noone would write a function that took an int by const reference because doing so doesn't make sense from a performance standpoint. However often times we pass these trivial types to functions generically written to take const T&.

While I agree with it from a convenience-oriented point of view, I don't think using a reference is any slower than passing the POD by value. My point is that it'd not make a difference if sizeof(const T&) == sizeof(T).

No, but it does make a difference if the compiler has to generate an additional instruction for the indirection. -Thorsten