Date: Wed, 16 Nov 2011 01:02:54 -0500 From: David Schultz <das@freebsd.org> To: Marcel Moolenaar <marcel@xcllnt.net> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org, Dimitry Andric <dim@freebsd.org> Subject: Re: svn commit: r227538 - head/tools/build Message-ID: <20111116060254.GA2460@zim.MIT.EDU> In-Reply-To: <69610C67-D009-48B1-85A5-167D5E7CCFE3@xcllnt.net> References: <201111152015.pAFKFwqb015331@svn.freebsd.org> <4EC2CFDD.7070206@FreeBSD.org> <20111115211449.GA476@zim.MIT.EDU> <69610C67-D009-48B1-85A5-167D5E7CCFE3@xcllnt.net>
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On Tue, Nov 15, 2011, Marcel Moolenaar wrote: > > On Nov 15, 2011, at 1:14 PM, David Schultz wrote: > > > On Tue, Nov 15, 2011, Dimitry Andric wrote: > >> Note all the final executables will use 'real' atomic operations. That > >> is, unless you compile with CPUTYPE?=i386, and I wish you the best of > >> luck in that case, you'll need it. :) > > > > I thought we dropped support for anything less than a 486DX years ago. > > That's besides the point. GCC by default targets i386 on older > FreeBSD versions, which means that GCC does not expand atomic > operations inline and simple emits calls for them. It's all > about how GCC behaves and it has nothing to do with whether we > support 80386 CPUs or not. Understood. I didn't realize that nobody dragged the default gcc target into the 1990's until 2009.
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