Date: Fri, 19 Dec 2014 17:06:32 +0100 From: Harry Schmalzbauer <freebsd@omnilan.de> To: FreeBSD Stable Mailing List <freebsd-stable@freebsd.org> Subject: CPUTYPEs includig avx are suspicious with clang in stable/10 Message-ID: <54944D08.8000202@omnilan.de>
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I'm seeing sporadic problems (core dumps) with binaries compiled with CPUTYPE=core-i-avx. They run fine on IvyBridge, but fail on Haswells. Stripping avx from MACHINE_CPU (by defining CPUTYPE=corei7 instead of core-i-avx) solved all crashes on the haswell system. I have no idea if applications like pkg(8) make use of AVX, I'd bet they don't do. So I guess it's something wrong with clang. Unfortuantely I currently don't have a development installation on any haswell system to provide some useful backtraces, but perhaps somebody with compiler knowledge can have a look at this problem? Thanks, -Harry
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