[RFA] Revised C++ ABI abstraction patches

J.T. Conklin jtc@redback.com
Thu Mar 15 11:35:00 GMT 2001


>>>>> "Jim" == Jim Blandy <jimb@zwingli.cygnus.com> writes:
Jim> And besides, function calls are so slow.  Remember, GDB's performance
Jim> matters a lot --- it's used to debug real-time operating systems!
Jim> :(

I don't know whether you're being facetious, but IMHO avoiding
function call overhead is not a good argument for making a piece of
code a macro instead of a function.  I've seen many circumstances
where macros (or inlined functions) decrease the overall performance
of a system because the added code results in i-cache thrashing.

I think we should be addressing performance problems that are the
result of poor algorithms rather than spending any time bothering
with microoptimizations.

        --jtc

-- 
J.T. Conklin
RedBack Networks



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