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Re: Improving gcc scalability wrt _extra_ large C files

From: Jacques THOMAS <jthomas at cs dot purdue dot edu>
To: "Joseph S. Myers" <jsm28 at cam dot ac dot uk>
Cc: gcc <gcc at gcc dot gnu dot org>
Date: Tue, 18 Mar 2003 14:41:18 -0500
Subject: Re: Improving gcc scalability wrt _extra_ large C files
References: <Pine.LNX.4.33.0303132337570.17612-100000@kern.srcf.societies.cam.ac.uk>

Hi,

I am at the moment compiling C files using g++/cc1plus, as they may end up beeing part of a C++ program. So far, I don't remember observing big differences in compile time between cc1 and cc1plus with my files.

Jacques.

Joseph S. Myers wrote:

On Thu, 13 Mar 2003, Jacques THOMAS wrote:

As I said a few days ago, gcc is awfully slow when it comes to compiling some very large generated C files (several hundred thousands of

^

1/ lookup_tag (gcc/cp/decl dot c at line 5239) does, more or less, a linear
                    ^^
Are you talking about C or C++?  Name lookup in C++ is much more complex
than in C and may have some reason to be slow.

References:
- Re: Improving gcc scalability wrt _extra_ large C files
  - From: Joseph S. Myers

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