QGraphicsSceneIndexIntersector was used as a kind of polymorpic predicate in
items_helper(). But it had only one function and the instances of it, which
were kept around in QGraphicsSceneIndexPrivate, were re-initialised on every
call to items_helper(), which means that one can just as well pass that
miniscule amount of data to the function itself.
Replaced the polymorphism with a function pointer and the comparison state
(which is conceptually const if it wasn't for the requirement to assign
to it all the time) with a const void * argument.
Effects on Linux AMD64 GCC 4.9-trunk release stripped:
text: -1584B
data: -376B
relocs: -26
I've wrapped the functions in a namespace. The only reason for this is
to keep the functions, previously defined in class bodies, at the same
indentation level so as not to destroy the git-blame history for them.
Change-Id: I8e1f48030047a3c54e881de7c77a3325b3e1f509
Reviewed-by: Alexis Menard <alexis@webkit.org>
Reviewed-by: Andreas Aardal Hanssen <andreas@hanssen.name>
861574ebb6