[Bug preprocessor/53525] Performance regression due to enabling track-macro-expansion

[manu at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53525

Manuel López-Ibáñez <manu at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |manu at gcc dot gnu.org

--- Comment #17 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
(In reply to Mathias Gaunard from comment #16)
> I opened bug #56746 a while ago which is somewhat related to this.
> ftrack-macro-expansion is causing 50% increased memory usage in my case (C++
> code with heavy usage of macros and templates).
> 
> Please also consider memory usage and not just performance.

Perhaps you could try the patches posted here and report whether they
reduce/increase memory usage? I am afraid that at the moment there is none with
enough free time to work on this, so all the help we can get is appreciated.

If you want me, i can close the other bug as a duplicate of this to have all
info in a single bug, and update the description mentioning also memory usage.