[Buildroot] Segmentation faults after gcc update

Thomas Petazzoni thomas.petazzoni at free-electrons.com
Mon Feb 20 16:55:35 UTC 2012


Le Mon, 20 Feb 2012 11:37:00 +0100,
Sven Neumann <s.neumann at raumfeld.com> a écrit :

> It turned out that Thomas guessed right. It seems that the iwmmxt
> optimizations are broken in gcc newer than 4.3. Changing the target to
> xscale fixed the problem. And the tests I have done so far seem to
> imply that the performance of code compiled with gcc 4.6 optimized
> for xscale is slightly better than the same code compiled with gcc
> 4.3 optimized for iwmmxt.

Ok.

> Not sure if this should somehow be handled in buildroot. But I thought
> I'd at least let you know on the mailing-list so that others can avoid
> running into the same problem.

If the problem is still there in the latest versions of gcc, it should
be reported as a bug to the gcc project.

Thanks for the investigation!

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com



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