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Re: gcc and compiling speed
- From: Zack Weinberg <zack at codesourcery dot com>
- To: Theo de Raadt <deraadt at cvs dot openbsd dot org>
- Cc: Andrew Pinski <pinskia at physics dot uc dot edu>, tech at openbsd dot org, Marc Espie <espie at quatramaran dot ens dot fr>, "gcc at gcc dot gnu dot org List" <gcc at gcc dot gnu dot org>
- Date: Sun, 29 Feb 2004 19:10:16 -0800
- Subject: Re: gcc and compiling speed
- References: <200403010259.i212xS6m023756@cvs.openbsd.org>
Theo de Raadt <deraadt@cvs.openbsd.org> writes:
>> Marc,
>> Now I know you have been asked before every time you bring up on the
>> GCC's mailing list about a set of preprocessed source for openbsd so
>> that the speed of GCC will improve.
>
> How will this improve the speed of gcc?
If Marc (or anyone) provides us with a test case for the performance
regression - for instance, the set of files produced by running gcc -E
over all of the openbsd kernel, which is what Andrew meant - then we
can find out why the compiler is slower, and fix it.
We do have our own test cases for compile time, and they have been
being fixed (mostly by Jan Hubicka) but we don't know that this will
help you.
zw