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[Bug tree-optimization/29946] inept unrolling for small iteration counts
- From: "amylaar at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 22 Nov 2006 20:10:05 -0000
- Subject: [Bug tree-optimization/29946] inept unrolling for small iteration counts
- References: <bug-29946-5394@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #2 from amylaar at gcc dot gnu dot org 2006-11-22 20:10 -------
(In reply to comment #1)
> > With the introduction of the new loop unroller in 4.0,
> I think you mean 3.4.0 because the new unroller was in 3.4.0.
>
You're right, it was introduced then. Although the old loop unroller
was still present in 3.4.0 and could be selected with a flag - which
was useful to get avoid performance regressions.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29946