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[Bug middle-end/24408] [4.1 Regression] Invariant code no longer removed from loop when doing FDO.
- From: "steven at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 3 Nov 2005 08:50:00 -0000
- Subject: [Bug middle-end/24408] [4.1 Regression] Invariant code no longer removed from loop when doing FDO.
- References: <bug-24408-8614@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #4 from steven at gcc dot gnu dot org 2005-11-03 08:50 -------
We have the following two options:
- Make loop.c preserve the profile. We all know that's not doable.
- Backport the loop-invariant.c changes from the killloop-branch
and enable -fmove-loop-invariants when doing FDO. We should not
do this because loop-invariant.c has not seen enough testing yet.
So IMHO this is not fixable for GCC 4.1.
--
steven at gcc dot gnu dot org changed:
What |Removed |Added
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CC| |steven at gcc dot gnu dot
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24408