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Compile time improvement, runtime regression (ia64)
- From: Richard Guenther <rguenth at tat dot physik dot uni-tuebingen dot de>
- To: gcc at gcc dot gnu dot org
- Date: Sun, 13 Jun 2004 14:18:45 +0200
- Subject: Compile time improvement, runtime regression (ia64)
Since the last two days I experience a compile time improvement both in
bootstrap times (50min vs. 60min before - but also switched host
compiler to 3.4.0 from 3.3.4) and tramp3d-v3 (non-leafified) testcase
(2min30 vs. 3min before). Unfortunately tramp3d-v3 performance
regressed from about 7.5s/it to 8s/it.
There's a hole in testing due to various bootstrapping problems on ia64
in the last week, so the precise cause remains uncertain.
Any ideas what causes the performance drop?
Thanks,
Richard.