Re: Optimizing empty functions in C

Hi Andrzej,


> [ about optimizing lots of empty functions ]


Rather than answers your questions, I'll make a suggestion based on
what it sounds like is causing you to ask these questions.


Instead of creating foo0() to foo100(), many of which are just
`return', and pairing them up with non_empty_foo42 flags, consider


        void (*foo[101])(void);


i.e., foo is an array of 101 pointers to functions taking no parameters
and returning nothing.


You can then point multiple elements of foo[] to the same function
definition, and can either treat a null pointer as `the function
doesn't exist because it does nothing', or not use null pointers and
just have your foo_empty() function as before.


Cheers,


Ralph.

Return to the comp.compilers page.
Search the comp.compilers archives again.