Re: [lwip-devel] [task #6827] etharp could need some tuning

[Thomas Mueller]

On Tue, 19 Jun 2007 16:33:21 +0000, Jonathan Larmour wrote:
> 
> Follow-up Comment #39, task #6827 (project lwip):
> [...]
> 
> Making your loops have a comparison against 0 does count as one of the more
> obscure optimisations you can do though, I agree.

That may be true for some architectures or compilers. But the loop in
question copies data 'backwards', i.e. accesses memory from higher to
lower addresses. That could level out the optimisation gained by
tweaking the loop abort criteria on some other architectures.

-- 
Thomas Mueller