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Re: [PATCH] x86 gas: allow 'rep nop'

From: Roland McGrath <mcgrathr at google dot com>
To: Jan Beulich <JBeulich at suse dot com>
Cc: binutils at sourceware dot org
Date: Tue, 3 Jul 2012 09:33:24 -0700
Subject: Re: [PATCH] x86 gas: allow 'rep nop'
References: <x57j395af77l.fsf@frobland.mtv.corp.google.com> <4FF2B51F020000780008D3D6@nat28.tlf.novell.com>

On Tue, Jul 3, 2012 at 12:02 AM, Jan Beulich <JBeulich@suse.com> wrote:
> As gcc has to detect the respective gas capability anyway, why
> can't it use "pause" right away, and then on much older gas
> versions too?

It could, it's just that GCC folks prefered to minimize the
conditionalization and just use the %; format specifier they
already had for a sometimes-necessary ; after a 'rep' or 'lock'
prefix.

Thanks,
Roland

References:
- [PATCH] x86 gas: allow 'rep nop'
  - From: Roland McGrath
- Re: [PATCH] x86 gas: allow 'rep nop'
  - From: Jan Beulich

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