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From: Jeremy Fitzhardinge <jeremy@goop.org>
To: Keir Fraser <keir@xensource.com>
Cc: PUCCETTI Armand <armand.puccetti@cea.fr>, xen-devel@lists.xensource.com
Subject: Re: incompatible prototypes
Date: Fri, 27 Apr 2007 09:40:50 -0700	[thread overview]
Message-ID: <46322792.3070800@goop.org> (raw)
In-Reply-To: <C257E1D0.E0FF%keir@xensource.com>

Keir Fraser wrote:
>> We don't use regparm(3) inside Xen?  Works nicely for the kernel.
>>     
>
> What's the speedup?
>   

Mumble mumble.  Don't know.  It's been that way for quite a long time now.

But it makes the generated code moderately smaller.  -freg-struct-return
helps too (about 2k of text saved on the kernel, which is fairly piddling).

    J

      reply	other threads:[~2007-04-27 16:40 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-04-27  8:23 incompatible prototypes PUCCETTI Armand
2007-04-27  8:34 ` Keir Fraser
2007-04-27 15:51   ` PUCCETTI Armand
2007-04-27 16:09     ` Keir Fraser
2007-04-27 16:18       ` Jeremy Fitzhardinge
2007-04-27 16:22         ` Keir Fraser
2007-04-27 16:40           ` Jeremy Fitzhardinge [this message]

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