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Date:      Tue, 22 Sep 2015 13:02:29 +0300
From:      Slawa Olhovchenkov <slw@zxy.spb.ru>
To:        Dimitry Andric <dim@FreeBSD.org>
Cc:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   Re: svn commit: r288099 - head/contrib/binutils/opcodes
Message-ID:  <20150922100229.GN21849@zxy.spb.ru>
In-Reply-To: <4CD0DC75-0235-4890-827C-4FF41BBADD8A@FreeBSD.org>
References:  <201509220935.t8M9ZZfD051027@repo.freebsd.org> <20150922094301.GW3158@zxy.spb.ru> <4CD0DC75-0235-4890-827C-4FF41BBADD8A@FreeBSD.org>

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On Tue, Sep 22, 2015 at 11:53:32AM +0200, Dimitry Andric wrote:

> On 22 Sep 2015, at 11:43, Slawa Olhovchenkov <slw@zxy.spb.ru> wrote:
> > 
> > On Tue, Sep 22, 2015 at 09:35:35AM +0000, Dimitry Andric wrote:
> ...
> >> -			  imm |= (-1 << 7);
> >> +			  imm |= -(1 << 7);
> > 
> > May be (~0 << 7) is more simple to understund?
> 
> This will give the same warning.  ~0 will implicitly convert to -1.

(~0U << 7) ?

> (It would be better to convert all these masks to unsigned, where such
> shifting is always defined, but that gives a lot more churn.)
> 
> -Dimitry
> 



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