[Bug rtl-optimization/20376] The missed-optimization of general induction variables in the new rtl-level loop optimizer cause performance degradation.

[dberlin at dberlin dot org]

------- Additional Comments From dberlin at gcc dot gnu dot org  2005-03-08 03:30 -------
Subject: Re:  The missed-optimization of
	general induction variables in the new rtl-level loop optimizer cause
	performance degradation.

On Tue, 2005-03-08 at 03:18 +0000, pinskia at physics dot uc dot edu
wrote:
> ------- Additional Comments From pinskia at physics dot uc dot edu  2005-03-08 03:18 -------
> Subject: Re:  The missed-optimization of general induction variables in the new rtl-level loop optimizer cause performance degradation.
> 
> 
> On Mar 7, 2005, at 10:16 PM, Diego Novillo wrote:
> 
> > pinskia at gcc dot gnu dot org wrote:
> >
> >> Why isn't the tree level loop IV-OPTs doing this?
> > Because variable i is static.
> 
> I think you commenting on the wrong bug.

In swim, most of the loop bounds are accessed through the COMMON block,
which is a structure.




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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20376