Subject: Re: unit-at-a-time...
From: Arjan van de Ven <arjan@infradead.org>
To: Roland Dreier <roland@topspin.com>
Cc: Mikael Pettersson <mikpe@csd.uu.se>, linux-kernel@vger.kernel.org,
       pluto@pld-linux.org
In-Reply-To: <52wtx6vhbk.fsf@topspin.com>
References: <200410311541.i9VFf0ah023857@harpo.it.uu.se>
	 <52wtx6vhbk.fsf@topspin.com>
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Date: Sun, 31 Oct 2004 22:33:41 +0100
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On Sun, 2004-10-31 at 11:05 -0800, Roland Dreier wrote:
> By the way, does anyone know if Richard Henderson's work in gcc 4.0
> (http://gcc.gnu.org/ml/gcc-patches/2004-09/msg00333.html) on laying
> out stack variables means that -funit-at-a-time will be safe to use
> again for the kernel?

unfortunately that's only half the task. It takes care of explicit
variables in inlines, but not about spilled variables, which is the
problem on x86 due to the lack of general purpose registers..
(and which is why x86-64 can use unit-at-a-time just fine)

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