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Re: [PATCH] Expand mempcpy into memcpy

From: OndÅej BÃlka <neleai at seznam dot cz>
To: David Miller <davem at davemloft dot net>
Cc: rsa at us dot ibm dot com, libc-alpha at sourceware dot org
Date: Wed, 6 Feb 2013 22:12:39 +0100
Subject: Re: [PATCH] Expand mempcpy into memcpy
References: <20130206.144345.351603279093204552.davem@davemloft.net><CAMe9rOqbhRum8pSDEuwoA6+xLQQ=qP3+QDh5HgSdEr=rwJsjBA@mail.gmail.com><20130206203848.GA3032@domone.kolej.mff.cuni.cz><20130206.155100.487701831684219719.davem@davemloft.net>

On Wed, Feb 06, 2013 at 03:51:00PM -0500, David Miller wrote:
> From: OndÅej BÃlka <neleai@seznam.cz>
> Date: Wed, 6 Feb 2013 21:38:48 +0100
> 
> > Perhaps best way is use my header as default and architectures with optimized
> > mempcpy need to enable it with _HAVE_STRING_ARCH_mempcpy.
> 
> I personally would rather have the default be the other way around,
> this is a non-intuitive thing to have to "discover" that you have
> to do when you optimize mempcpy properly.

I do not know how have this default and optimize away call in nonugly
way. My two ideas are:
1. Add corresponding header to all ports and remember to copy it when
new port is created.
2. Add to test if ports/.../mempcpy.[cS] is present into makefile and 
enable it when it is not.

References:
- Re: [PATCH] Expand mempcpy into memcpy
  - From: David Miller
- Re: [PATCH] Expand mempcpy into memcpy
  - From: H.J. Lu
- Re: [PATCH] Expand mempcpy into memcpy
  - From: OndÅej BÃlka
- Re: [PATCH] Expand mempcpy into memcpy
  - From: David Miller

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