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Re: compile time regressions (was: merging for 3.4)
- From: Benjamin Kosnik <bkoz at redhat dot com>
- To: Dan Nicolaescu <dann at ics dot uci dot edu>
- Cc: pfeifer at dbai dot tuwien dot ac dot at, echristo at redhat dot com,neil at daikokuya dot co dot uk, hubicka at ucw dot cz, jbuck at synopsys dot com,dnovillo at redhat dot com, mark at codesourcery dot com,gdr at integrable-solutions dot net, pcarlini at unitus dot it,libstdc++ at gcc dot gnu dot org, gcc at gcc dot gnu dot org
- Date: Tue, 10 Dec 2002 11:24:58 -0600
- Subject: Re: compile time regressions (was: merging for 3.4)
- References: <F65E3CFB-07D4-11D7-A567-00039390D9E0@apple.com><Pine.BSF.email@example.com><200212100246.gBA2kujF029585@gremlin.ics.uci.edu>
> > gcc-3.0.4/bin/g++ 45.45 user
> > gcc-3.1.1/bin/g++ 57.79 user +27%
> > gcc-3.2.1/bin/g++ 59.30 user +30%
> > gcc-current/bin/g++ 72.29 user +59%
These indicate, to me, that the slowdown has nothing to do with
libstd++-v3. There just weren't substantial changes in the library
includes to cause this kind of slowdown between 3.0.x and 3.2.x.
It also indicates the PCH will be less and less useful unless the other
bits are brought back to normal. Depressing.