https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43149
Andrew Pinski changed:
What|Removed |Added
Status|UNCONFIRMED |RESOLVED
Resolution|---
--- Comment #8 from pinskia at gmail dot com 2010-02-23 16:29 ---
Subject: Re: Partial optimization
Sent from my iPhone
On Feb 23, 2010, at 8:16 AM, "bschindler at inf dot ethz dot ch"
wrote:
>
>
> --- Comment #6 from bschindler at inf dot ethz dot ch
> 2010-02-23 16:16 ---
Sent from my iPhone
On Feb 23, 2010, at 8:16 AM, "bschindler at inf dot ethz dot ch" > wrote:
--- Comment #6 from bschindler at inf dot ethz dot ch
2010-02-23 16:16 ---
Also, the following would not work
#pragma GCC optimize(2) // I don't know whether I got that syntax
right
--- Comment #7 from bschindler at inf dot ethz dot ch 2010-02-23 16:24
---
Okay, the need is simply this:
I have an octree implemented using eigen.
With gcc -g, it takes roughly 3 minutes to build the tree
With gcc -O1 -g, it takes about 1-2 seconds for the same
The problem is Eige
--- Comment #6 from bschindler at inf dot ethz dot ch 2010-02-23 16:16
---
Also, the following would not work
#pragma GCC optimize(2) // I don't know whether I got that syntax right
#include
#pragma pop_options
blubb;
Eigen/Core is a separate file so I'd expect the pragma to have no
--- Comment #5 from rguenth at gcc dot gnu dot org 2010-02-23 16:13 ---
I wouldn't surprised if it doesn't work very well for template instantiations
though.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43149
--- Comment #4 from pinskia at gmail dot com 2010-02-23 16:02 ---
Subject: Re: Partial optimization
Sent from my iPhone
On Feb 23, 2010, at 7:53 AM, "bangerth at gmail dot com"
wrote:
>
>
> --- Comment #3 from bangerth at gmail dot com 2010-02-23 15:53
> ---
> So the at
Sent from my iPhone
On Feb 23, 2010, at 7:53 AM, "bangerth at gmail dot com" > wrote:
--- Comment #3 from bangerth at gmail dot com 2010-02-23 15:53
---
So the attribute would have to be attached to the namespace, I guess.
Or just use the pragma instead :).
We can keep the
--- Comment #3 from bangerth at gmail dot com 2010-02-23 15:53 ---
So the attribute would have to be attached to the namespace, I guess.
We can keep the PR open, but my best guess is that this is going to be
one of those PRs that stay open forever as there is so little demand
for this k
--- Comment #2 from bschindler at inf dot ethz dot ch 2010-02-23 15:45
---
Thank you for that hint, however the problem does not disappear just like that.
I would like the entire namespace be optimized that way and from the discussion
it seems that there is no easy way to do this?
-
--- Comment #1 from bangerth at gmail dot com 2010-02-23 15:13 ---
This feature already exists. See the discussion of the "optimize" attribute
in
http://gcc.gnu.org/onlinedocs/gcc-4.4.3/gcc/Function-Attributes.html#Function-Attributes
W.
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bangerth at gmail dot com changed:
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