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Re: Suggestions for improving gcc 3.2 compilation speed?
- From: Karel Gardas <kgardas at objectsecurity dot com>
- To: Benjamin Kosnik <bkoz at redhat dot com>
- Cc: gcc at gcc dot gnu dot org, <mrs at apple dot com>
- Date: Fri, 7 Mar 2003 21:50:35 +0100 (CET)
- Subject: Re: Suggestions for improving gcc 3.2 compilation speed?
On Fri, 7 Mar 2003, Benjamin Kosnik wrote:
> > I have a g++ compiler that is 5.6x faster than the current g++ when
> > compiling large C++ code bases. That's when compared to a g++ PCH,
> > without it, more like 8x to 16x faster when PCH isn't used.
>
> Your PCH numbers are interesting to me.
>
> I cannot get PCH to work with g++. How are you able to do this? Are you
> generating individual .pch files for each header (don't see any
> significant speed improvement), or are you using -include
> big_globbed_header.h.pch (and if so, can you port the patches to do this
> to mainline g++, because it currently doesn't work), or is there another
> approach?
>
I'm also interested since I still see while using PCH (at least on 2 weeks
old main-trunk sources) already defined symbol assembler error messages.
Problem reported: http://gcc.gnu.org/ml/gcc/2003-01/msg00419.html
Thanks,
Karel
--
Karel Gardas kgardas at objectsecurity dot com
ObjectSecurity Ltd. http://www.objectsecurity.com