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Re: Suggestions for improving gcc 3.2 compilation speed?
- From: Benjamin Kosnik <bkoz at redhat dot com>
- To: gcc at gcc dot gnu dot org
- Cc: mrs at apple dot com
- Date: Fri, 7 Mar 2003 13:12:03 -0600
- Subject: Re: Suggestions for improving gcc 3.2 compilation speed?
> 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?
See this thread, and follow-ups.
http://gcc.gnu.org/ml/libstdc++/2003-03/msg00025.html
curious,
benjamin