[Bug preprocessor/17315] Strange compile-time regression in cpp against gcc3.4.1

["kgardas at objectsecurity dot com" <gcc-bugzilla at gcc dot gnu dot org>]

------- Additional Comments From kgardas at objectsecurity dot com  2004-09-07 15:08 -------
Subject: Re:  Strange compile-time regression in cpp
 against gcc3.4.1


Paolo,

thanks for your explanation, but I see possible way how libstdc++ may
affect c++ compile-time performance, the way is that it may use much
complicated macros evaluation and so hitting cpp performance, not talking
about the fact that include files might be just bigger. The problem is
that when testing cpp performance separately, I see nearly the same
results, so certainly both preprocessor are good and speedy in saving ii
files. My guess is that the problem migt be somewhere between 3.5.0's cpp
and cc1plus, i.e. data transfer, but not knowing anything about gcc's
internals this is just wild guess...

Karel




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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17315