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[Bug tree-optimization/34223] missed optimization - complete unrolling pass before the vectorizer
- From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 25 Nov 2007 12:50:00 -0000
- Subject: [Bug tree-optimization/34223] missed optimization - complete unrolling pass before the vectorizer
- References: <bug-34223-13229@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #1 from rguenth at gcc dot gnu dot org 2007-11-25 12:50 -------
Related to PR18754 - but vectorizer folks say early complete unrolling defeats
the vectorizer. So possibly a compromise is to do early complete unrolling
only
for nested loops.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rguenth at gcc dot gnu dot
| |org
BugsThisDependsOn| |18754
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2007-11-25 12:50:00
date| |
Summary|missed optimization - |missed optimization -
|complete unrolling pass |complete unrolling pass
|before the vectorizer |before the vectorizer
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34223