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[Bug target/43884] [4.4/4.5/4.6 Regression] Performance degradation for simple fibonacci numbers calculation
- From: "hjl dot tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 25 Jun 2010 14:09:43 -0000
- Subject: [Bug target/43884] [4.4/4.5/4.6 Regression] Performance degradation for simple fibonacci numbers calculation
- References: <bug-43884-6649@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #18 from hjl dot tools at gmail dot com 2010-06-25 14:09 -------
(In reply to comment #17)
> Subject: Re: [4.4/4.5/4.6 Regression] Performance
> degradation for simple fibonacci numbers calculation
>
> This is not correct, when profile is guessed we should look into the
> frequencies.
> I guess profile is wrong after tail recursion elimination or horked by
> recursive inlining,
> I will take a look.
>
Any updates?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43884