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Date:      Tue, 27 Dec 2011 15:54:09 -0800
From:      Stanislav Sedov <stas@FreeBSD.org>
To:        Ed Schouten <ed@80386.nl>
Cc:        mips@FreeBSD.org, sparc64@FreeBSD.org
Subject:   Re: (Finally) migrate MIPS and SPARC64 to libcompiler_rt
Message-ID:  <20111227155409.caccb69e.stas@FreeBSD.org>
In-Reply-To: <20111227231243.GB1895@hoeg.nl>
References:  <20111227231243.GB1895@hoeg.nl>

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On Wed, 28 Dec 2011 00:12:43 +0100
Ed Schouten <ed@80386.nl> mentioned:

> Hi all,
> 
> Quite some time ago, we switched from libgcc to libcompiler_rt on all
> architectures except MIPS and SPARC64. At the time I was also quite busy
> with other FreeBSD and LLVM related things, so I decided to leave MIPS
> and SPARC64 the way they were.
> 
> The reason why we haven't switched these two architectures yet, is due
> to a minor bug in __ctzdi2() calling __builtin_ctz(). On these two
> architectures, this ends up calling __ctzdi2() again, causing a hang.
> 
> I have filed a bug for this at the LLVM folks, but until that time I
> want to ask if there are people that are willing to test the attached
> patch on their MIPS and SPARC64 systems. The only thing you need to do:
> rebuild world two iterations to see whether everything works properly. I
> do advise you to test this patch in a jail first.
> 
> If this patch fixes the problem, I will commit the change to SVN. As of
> then, every architecture will use libcompiler_rt. This also makes
> <stdatomic.h> work on MIPS properly.
> 

Hi!

It seems that the patch was stripped off.

Thanks!

-- 
Stanislav Sedov
ST4096-RIPE

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