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From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
Cc: Hong Kong Phoey <hongkongphoey@gmail.com>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] DM9000 network driver
Date: Fri, 18 Mar 2005 11:02:55 -0500	[thread overview]
Message-ID: <d120d50005031808027102fa9c@mail.gmail.com> (raw)
In-Reply-To: <20050318152554.GH17865@csclub.uwaterloo.ca>

On Fri, 18 Mar 2005 10:25:54 -0500, Lennart Sorensen
<lsorense@csclub.uwaterloo.ca> wrote:
> On Fri, Mar 18, 2005 at 08:41:52PM +0530, Hong Kong Phoey wrote:
> > Sacrificing readibility a little bit, you could do something useful.
> > Instead of those ugly switch statements you could define function
> > pointer arrays and call appropriate function
> >
> > switch(foo) {
> >
> >   case 1:
> >              f1();
> >   case2 :
> >              f2();
> > };
> >
> > could well become
> >
> > void (*func)[] = { f1, f2 };
> >
> > func(i);
> 
> Ewww!
> 
> How about sticking with obvious readable code rather than trying to save
> a couple of conditional branches.

On top of that I highly doibt that setting up stack frame for an
indirect function call is less expensive than a conditional branch.

-- 
Dmitry

  parent reply	other threads:[~2005-03-18 16:08 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-03-18 13:31 Sascha Hauer
2005-03-18 15:11 ` Hong Kong Phoey
2005-03-18 15:25   ` Lennart Sorensen
2005-03-18 15:55     ` John W. Linville
2005-03-18 16:02     ` Dmitry Torokhov [this message]
2005-03-18 16:04     ` linux-os
2005-03-18 16:21 ` Alan Cox
2005-03-18 16:58   ` Ben Dooks
2005-03-18 17:29     ` Sascha Hauer

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