ports/178977: x11-drivers/xf86-video-intel: Assertion failed: (TheLoop-> getLoopPreheader()
Dimitry Andric
dim at FreeBSD.org
Sat May 25 19:10:01 UTC 2013
The following reply was made to PR ports/178977; it has been noted by GNATS.
From: Dimitry Andric <dim at FreeBSD.org>
To: "O. Hartmann" <ohartman at zedat.fu-berlin.de>
Cc: bug-followup at FreeBSD.org
Subject: Re: ports/178977: x11-drivers/xf86-video-intel: Assertion failed: (TheLoop->getLoopPreheader()
Date: Sat, 25 May 2013 21:00:58 +0200
On May 25, 2013, at 20:44, "O. Hartmann" <ohartman at zedat.fu-berlin.de> =
wrote:
> On Sat, 2013-05-25 at 20:17 +0200, Dimitry Andric wrote:
>> This looks like <http://llvm.org/bugs/show_bug.cgi?id=3D16139>, a bug =
in
>> the vectorizer (which is enabled by default at -O3).
...
>> =
<http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Vectorize/L=
oopVectorize.cpp?view=3Dpatch&r1=3D182656&r2=3D182655&pathrev=3D182656>
>>=20
>> and rebuild clang:
>>=20
>> cd /usr/src/lib/clang/libllvmvectorize && make
>> cd /usr/src/usr.bin/clang/clang && make && sudo make install
>=20
> With the patch applied, x11-drivers/xf86-video-intel builds, but I can
> not say whether it works, since I have no X11 on an Intel iGPU.
>=20
> Thanks, the issue should be closed due to my -O3 compiling. Or marked
> fixed with the provided patch?
I will import the fix for clang from upstream. I also think it will go
into the 3.3 branch, but better to fix the issue now, before too many
people encounter it...
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