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[lno] 50% runtime performance regression since yesterday
- From: Richard Guenther <rguenth at tat dot physik dot uni-tuebingen dot de>
- To: gcc at gcc dot gnu dot org
- Cc: Sebastian Pop <pop at cri dot ensmp dot fr>
- Date: Wed, 23 Jun 2004 10:28:50 +0200 (CEST)
- Subject: [lno] 50% runtime performance regression since yesterday
Hi!
Between (not including)
2004-06-21 Zdenek Dvorak <rakdver@atrey.karlin.mff.cuni.cz>
PR rtl-optimization/16001
* loop-iv.c (iv_number_of_iterations): Prevent copy propagation in
niter_expr.
and (including)
2004-06-22 Dorit Naishlos <dorit@il.ibm.com>
* tree-vectorizer.c (vect_create_data_ref): Fix setting of mem_tag.
(vect_analyze_data_refs): Make sure we have a mem_tag.
You introduced a 50% runtime performance regression to lno. lno is now
slightly worse than mainline with -O2 -funroll-loops on the tramp3d-v3
testcase while it was 50% better before.
May it be all the removal of CHREC nodes? I don't know if this removes
any functionality, though. But it seems to be the only patch not touching
exclusively the vectorizer (which I don't use).
Please get me back that performance!
Richard.
--
Richard Guenther <richard dot guenther at uni-tuebingen dot de>
WWW: http://www.tat.physik.uni-tuebingen.de/~rguenth/