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[Bug rtl-optimization/20376] The missed-optimization of general induction variables in the new rtl-level loop optimizer cause performance degradation.
- From: "dnovillo at redhat dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 8 Mar 2005 03:16:49 -0000
- Subject: [Bug rtl-optimization/20376] The missed-optimization of general induction variables in the new rtl-level loop optimizer cause performance degradation.
- References: <20050308024912.20376.canqun@nudt.edu.cn>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From dnovillo at redhat dot com 2005-03-08 03:16 -------
Subject: Re: The missed-optimization of general
induction variables in the new rtl-level loop optimizer cause performance
degradation.
pinskia at gcc dot gnu dot org wrote:
> Why isn't the tree level loop IV-OPTs doing this?
>
Because variable i is static.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20376