8 Dec
2002
8 Dec
'02
1:05 p.m.
From a 'C optimisation tutorial'
http://www.abarnett.demon.co.uk/tutorial.html
# Compilers can often optimise a whole file - avoid splitting off
closely related functions into separate files, the compiler will do
better if can see both of them together (it might be able to inline the
code, for example). #
yes, well ... it depends on what "closely related" means. i recently
split ardour's mammoth session.cc into several files and have noticed
a noticeable drop in performance since then. the split was done along
the lines of "closely related" functions. also, as far as inlining
goes, everything that i believe can be sensibly inlined is in a header
file, not a source file itself.
i'll try the trick of a single to-be-used-by-the-compiler file that
just includes all the others, and see if that helps things.
--p