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Re: C++ compile-time regressions (was: GCC 3.0.1 Status Report)
- To: Nathan Sidwell <nathan at codesourcery dot com>
- Subject: Re: C++ compile-time regressions (was: GCC 3.0.1 Status Report)
- From: Gerald Pfeifer <pfeifer at dbai dot tuwien dot ac dot at>
- Date: Mon, 23 Jul 2001 11:51:07 +0200 (CEST)
- cc: Mark Mitchell <mark at codesourcery dot com>, gcc <gcc at gcc dot gnu dot org>
On Fri, 20 Jul 2001, Nathan Sidwell wrote:
>> GCC 2.95 GCC 3.0
>> Compile time Binary size Compile time Binary Size
>> -O0 6:19 3915128 8:20 4159780
>> -O1 4:20 4203480 11:40 4829732
>> -O2 5:56 4209368 14:09 4862532
>> -O3 5:47 4221464 32:04 6166052
> Do you have the .ii file sizes to compare? Is there a correlation with
> compile time?
Not that strongly, I'd say:
% wc -l 2.95/* | grep total
472019 total
% wc -l 3.0/* | grep total
575530 total
That is, the 17 preprocessed source files become larger, but not that
much (compared to compile time).
Gerald
--
Gerald "Jerry" pfeifer@dbai.tuwien.ac.at http://www.dbai.tuwien.ac.at/~pfeifer/