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[Bug middle-end/40965] [graphite] slow compilation
- From: "sebpop at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 5 Aug 2009 04:42:48 -0000
- Subject: [Bug middle-end/40965] [graphite] slow compilation
- References: <bug-40965-6642@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #3 from sebpop at gmail dot com 2009-08-05 04:42 -------
Subject: Re: [graphite] slow compilation
On Tue, Aug 4, 2009 at 17:44, rguenth at gcc dot gnu dot
org<gcc-bugzilla@gcc.gnu.org> wrote:
> Eh - where's that exponential time complexity? ...
The code generation of Graphite can be exponential, didn't I mentioned
it yet?
We should find some cutting factor, function of the number of loops in
a SCoP to avoid these long compile times. One other solution is to
use the PPL watchdog utility to cut off the exponential operations in
a deterministic way.
Sebastian
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40965