linux-kernel - Re: -freg-struct-return?

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Message-ID: <45DDD538.1040309@goop.org>
Date:	Thu, 22 Feb 2007 09:39:04 -0800
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	"H. Peter Anvin" <hpa@...or.com>
CC:	Andi Kleen <ak@....de>, Arjan van de Ven <arjan@...radead.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: -freg-struct-return?

H. Peter Anvin wrote:
> Sometimes returning small structures is really nice.  If you can pass
> them in registers, it's often generates the fastest possible code;
> much better than using a pointer. 

Yes, but specifically, are there any pieces of assembler which return
structures?  It appears there are none (since Ingo got a booting
kernel), but there might be something obscure in some corner.

    J
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