From owner-freebsd-hackers@FreeBSD.ORG  Wed May 20 16:10:56 2015
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Date: Wed, 20 May 2015 09:10:53 -0700
From: Sean Bruno <sbruno@ignoranthack.me>
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To: Dimitry Andric <dim@FreeBSD.org>, Brooks Davis <brooks@freebsd.org>
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Subject: Re: Trying to use clang/head and XCC
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On 05/19/15 23:09, Dimitry Andric wrote:
> On 20 May 2015, at 06:52, Brooks Davis <brooks@freebsd.org> wrote:
>> 
>> On Tue, May 19, 2015 at 06:47:13PM -0700, Sean Bruno wrote:
> ...
>>> clang (LLVM option parsing): Unknown command line argument 
>>> '-enable-gvn=false'.  Try: 'clang (LLVM option parsing) -help' 
>>> clang (LLVM option parsing): Did you mean '-enable-pre=false'? 
>>> *** Error code 1
>> 
>> IIRC -enable-gvn=false is a local option Dimitry added to our
>> clang.  I don't remember the suggested workaround off hand.
> 
> https://svnweb.freebsd.org/base/head/contrib/llvm/patches/patch-04-add
- -llvm-gvn-option.diff?view=co
>
>  Alternatively, just skip building boot2, if you don't need it.
> 
> -Dimitry
> 


Should this be included upstream?

sean
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