[PING] Optimize manual byte swap implementations using the GCC bswap builtin

Richard Guenther richard.guenther@gmail.com
Fri Jan 9 15:14:00 GMT 2009


On Fri, Jan 9, 2009 at 3:29 PM, Andreas Krebbel
<krebbel@linux.vnet.ibm.com> wrote:
> Hi Richard,
>
>> How about building (accumulated) bit-transfer matrices starting off
>> interesting statements by simulating them and then
>> base the recognition on them?
>
> I already thought about something like this to cover other bswap
> implementations but found it rather tricky to implement. I'll not be able to
> come up with a patch in the foreseeable future. How about going with the
> current version of the patch until a more generic implementation is
> available and reverting my stuff then? The current version shouldn't hurt
> and helps the kernel and glibc.

But then it doesn't get done ;)  Well, remind me again after stage1 opened,
I didn't look into the patch in detail yet.

Richard.

> Bye,
>
> -Andreas-
>
>



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