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Date:      Thu, 15 Aug 2013 21:36:40 +0300
From:      Konstantin Belousov <kostikbel@gmail.com>
To:        Dimitry Andric <dim@FreeBSD.org>
Cc:        "freebsd-current@freebsd.org CURRENT" <freebsd-current@FreeBSD.org>, Dmitry Morozovsky <marck@rinet.ru>, Peter Wemm <peter@wemm.org>
Subject:   Re: building i386 world on amd64 host: failed @svn
Message-ID:  <20130815183640.GR4972@kib.kiev.ua>
In-Reply-To: <17A40261-A0DA-4070-990F-0D0777A5BE44@FreeBSD.org>
References:  <alpine.BSF.2.00.1307281713160.55051@woozle.rinet.ru> <17A40261-A0DA-4070-990F-0D0777A5BE44@FreeBSD.org>

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On Thu, Aug 15, 2013 at 08:13:34PM +0200, Dimitry Andric wrote:
> Alternatively, we could attempt to figure out why gcc doesn't want to
> inline those 64 bit builtins on FreeBSD.  It seems to have no problem
> doing so on the first Linux box I tried...

Does the linux box defaults to pentium or higher for -march ?
64 bit atomics cannot be implemented in usermode on i386 on
processors which do not have cmpxchg8b instruction.

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