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C++ compile-time performance regressions / PR 3083
- From: Gerald Pfeifer <pfeifer at dbai dot tuwien dot ac dot at>
- To: gcc at gcc dot gnu dot org
- Cc: Mark Mitchell <mark at codesourcery dot com>
- Date: Wed, 23 Oct 2002 17:53:20 +0200 (CEST)
- Subject: C++ compile-time performance regressions / PR 3083
General note: We have a significant performance problem with optimizing
C++ compilations. I did some new tests using the example from PR 3083,
and here are the timings (i386-unknown-freebsd4.6):
/sw/gcc-3.0.4/bin/g++ 45.45 user
/sw/gcc-3.1.1/bin/g++ 57.79 user +27%
/sw/gcc-3.2.1/bin/g++ 59.30 user +30%
/sw/gcc-current/bin/g++ 81.18 user +78%
Could someone please have a look at this?
Mark, I agree that this should not block the release of GCC 3.2.1,
but I really, really would like to reopen PR 3083 as "high priority"
for GCC 3.3 (removing you as "responsible").
Gerald
--
Gerald "Jerry" pfeifer@dbai.tuwien.ac.at http://www.dbai.tuwien.ac.at/~pfeifer/