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Date: Wed, 11 Nov 2009 08:18:32 +0100
From: Ingo Molnar <mingo@...e.hu>
To: "Ma, Ling" <ling.ma@...el.com>
Cc: "H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...hat.com>,
Thomas Gleixner <tglx@...utronix.de>,
linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH RFC] [X86] performance improvement for memcpy_64.S by
fast string.
* Ma, Ling <ling.ma@...el.com> wrote:
> Hi All
> Please use the memcpy.c(cc -o memcpy memcpy.c -O2) to test more cases,
> if you have interest. In this program we did simple modification
> on memcpy_new function.
FYI:
earth4:~/s> cc -o memcpy memcpy.c -O2
memcpy.c: In function 'do_one_throughput':
memcpy.c:45: error: impossible register constraint in 'asm'
memcpy.c:53: error: impossible register constraint in 'asm'
memcpy.c:47: error: impossible register constraint in 'asm'
memcpy.c:53: error: impossible register constraint in 'asm'
Ingo
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