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[Bug tree-optimization/20256] Perfect nest transformation not conservative enough
- From: "dberlin at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 1 Mar 2005 03:01:05 -0000
- Subject: [Bug tree-optimization/20256] Perfect nest transformation not conservative enough
- References: <20050301012709.20256.fjahanian@apple.com>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From dberlin at gcc dot gnu dot org 2005-03-01 03:01 -------
This is a problem in testing legality of the perfect nest transform.
We think we can transform the loop into a perfect nest, but can't really (at
least with the code we have now), and do it wrong.
--
What |Removed |Added
----------------------------------------------------------------------------
Summary|-ftree-loop-linear doesn't |Perfect nest transformation
|work right in small loop |not conservative enough
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20256