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Re: TCP/IP checksum routine performance
- To: Andrew Lunn <andrew dot lunn at ascom dot ch>
- Subject: Re: [ECOS] TCP/IP checksum routine performance
- From: Jonathan Larmour <jlarmour at redhat dot co dot uk>
- Date: Tue, 02 May 2000 16:46:56 +0100
- CC: alexs at redhat dot com, grante at visi dot com, ecos-discuss at sourceware dot cygnus dot com
- Organization: Red Hat UK Ltd.
- References: <200005021054.MAA23452@biferten.ma.tech.ascom.ch>
Andrew Lunn wrote:
>
> I think the real problem to be addressed is why gcc gets into the
> register threash problem? My guess is that it should consider delaying
> the add, lay the code out and then find out its run out of
> registers. It should then change its mind and not delay the add. Its
> not looking at the code it produced and sanity checking it to see if
> the optimisintion its made has actually made the code worse.
Did anyone actually say which gcc version was being used?
Jifl
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