linux-kernel - Re: [patch 06/10] Immediate Value

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Message-ID: <468AB390.7000608@redhat.com>
Date:	Tue, 03 Jul 2007 16:37:36 -0400
From:	Chuck Ebbert <cebbert@...hat.com>
To:	"H. Peter Anvin" <hpa@...or.com>
CC:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [patch 06/10] Immediate Value - i386 Optimization

On 07/03/2007 04:18 PM, H. Peter Anvin wrote:
> 
> One could, though, use an indirect jump to achieve, if not as good, at
> least most of the effect:
> 
> 	movl	$<patchable>,<reg>
> 	jmp	*<reg>
> 

Yeah, but there's this GCC bug:

	http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22448

You can't even dereference labels in an ASM statement.
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