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Date: Tue, 03 Jul 2007 16:37:36 -0400
From: Chuck Ebbert <cebbert@redhat.com>
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To: "H. Peter Anvin" <hpa@zytor.com>
CC: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>,
       akpm@linux-foundation.org, linux-kernel@vger.kernel.org
Subject: Re: [patch 06/10] Immediate Value - i386 Optimization
References: <20070703164046.645090494@polymtl.ca> <20070703164515.071300768@polymtl.ca> <468A9956.9050903@zytor.com> <20070703191605.GB4047@Krystal> <468AAF1F.6010909@zytor.com>
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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.