Re: Optimizing empty functions in C

  "Andrzej Wasowski" <wasowski@data.pl> schreibt:


>what if the function is potentially called via function pointer? (I
>belive it is non-trivial to eliminate the call then).


IMO the key is "inline". Inline functions are compiled to inline code
whenever possible, and then the compiler will produce no code for
empty procedure bodies. In special situations, when e.g. a debug build
is requested or when function pointers are involved, then the
procedures are not inlined.


In former times the C preprocessor was used to provide such
functionality, but the C++ inline procedures and templates are much
more powerful, with regards to e.g. type checking and polymorphism.


DoDi

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