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Re: [PATCH] Optimize manual byte swap implementations using the GCC bswap builtin

From: "Andrew Pinski" <pinskia at gmail dot com>
To: "Andreas Krebbel" <krebbel at linux dot vnet dot ibm dot com>
Cc: "Andrew Haley" <aph at redhat dot com>, gcc-patches at gcc dot gnu dot org
Date: Fri, 28 Nov 2008 07:35:11 -0800
Subject: Re: [PATCH] Optimize manual byte swap implementations using the GCC bswap builtin
References: <20081128140056.GA22640@homer.boeblingen.de.ibm.com> <4930076B.7060402@redhat.com> <20081128151849.GA25408@homer.boeblingen.de.ibm.com>

On Fri, Nov 28, 2008 at 7:18 AM, Andreas Krebbel
<krebbel@linux.vnet.ibm.com> wrote:
> Hello Andrew,
>
>> Did you check htons() et al?
>
> Nope. But the glibc bswap implementation matches what the kernel
> does. Taken from bits/byteswap.h:

Some implementation of htons use inline-asm directly so it cannot be
optimized in a same way to the builtin.

Thanks,
Andrew Pinski

Follow-Ups:
- Re: [PATCH] Optimize manual byte swap implementations using the GCC bswap builtin
  - From: Andreas Krebbel

References:
- [PATCH] Optimize manual byte swap implementations using the GCC bswap builtin
  - From: Andreas Krebbel
- Re: [PATCH] Optimize manual byte swap implementations using the GCC bswap builtin
  - From: Andrew Haley
- Re: [PATCH] Optimize manual byte swap implementations using the GCC bswap builtin
  - From: Andreas Krebbel

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