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[Bug tree-optimization/17863] [4.0/4.1/4.2/4.3 Regression] performance loss (not inlining as much??)
- From: "rguenther at suse dot de" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 31 Jan 2008 09:39:09 -0000
- Subject: [Bug tree-optimization/17863] [4.0/4.1/4.2/4.3 Regression] performance loss (not inlining as much??)
- References: <bug-17863-2109@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #39 from rguenther at suse dot de 2008-01-31 09:39 -------
Subject: Re: [4.0/4.1/4.2/4.3 Regression]
performance loss (not inlining as much??)
On Wed, 30 Jan 2008, stevenb dot gcc at gmail dot com wrote:
>
>
> ------- Comment #37 from stevenb dot gcc at gmail dot com 2008-01-30 20:13 -------
> Subject: Re: [4.0/4.1/4.2/4.3 Regression] performance loss (not inlining as
> much??)
>
> > Those seems to be all just array manipulations.
>
> AFAICT, they are exactly in the form that some targets like it (e.g.
> auto-inc/dec and SMALL_REGISTER_CLASS targets).
They also don't operate on arrays, so we cannot use ARRAY_REF in the
IL.
Richard.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17863