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Re: ctype optimization work
- From: Paolo Carlini <pcarlini at suse dot de>
- To: Jerry Quinn <jlquinn at optonline dot net>
- Cc: libstdc++ <libstdc++ at gcc dot gnu dot org>
- Date: Mon, 08 Dec 2003 19:01:02 +0100
- Subject: Re: ctype optimization work
- References: <16340.43982.725840.586365@gargle.gargle.HOWL>
Jerry Quinn wrote:
Any thoughts?
Well, mine is *really* down-to-earth: as my preliminary tests show
http://gcc.gnu.org/ml/libstdc++/2003-11/msg00351.html
dealing with the wchar_t case first with a trivial table prepared at
construction time, doesn't remove the virtual call overhead and doesn't
provide all the advantages of a dynamic cache, but for sure promise to
speed up noticeably many applications, in particular when the
time_get/time_put facets are involved:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13341
I mean to just implement this baseline thing, against which we can judge
more sophisticated, but tricky alternatives.
Paolo.