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Date:      Tue, 23 Dec 2014 08:00:04 +0100
From:      Harry Schmalzbauer <freebsd@omnilan.de>
To:        Dimitry Andric <dim@FreeBSD.org>
Cc:        FreeBSD Stable Mailing List <freebsd-stable@FreeBSD.org>
Subject:   Re: CPUTYPEs includig avx are suspicious with clang in stable/10
Message-ID:  <549912F4.9040501@omnilan.de>
In-Reply-To: <18B24CB4-0F39-4A7B-982C-9FAA5CE36749@FreeBSD.org>
References:  <54944D08.8000202@omnilan.de> <18B24CB4-0F39-4A7B-982C-9FAA5CE36749@FreeBSD.org>

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Bezüglich Dimitry Andric's Nachricht vom 22.12.2014 21:49 (localtime):
> On 19 Dec 2014, at 17:06, Harry Schmalzbauer <freebsd@omnilan.de> wrote:
>>
>> 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.
> 
> Can you provide a concrete test case?  E.g. binaries with both
> optimizations, of which one exhibits the crash?

At least this is something I can do at the momen. Please find them here
(i386 versions):
http://www.omnilan.de/downloads/pkg-static.core-i-avx
http://www.omnilan.de/downloads/pkg-static.core7

The former crashes on Haswell while running fine on IvyBridge, the
latter has been compiled with CPUTYPE=corei7 instead of core-i-avx and
doesn't show problems on any syste,

Thansk for your attention!!!

-Harry





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