ports/178977: x11-drivers/xf86-video-intel: Assertion failed: (TheLoop->getLoopPreheader()

[O. Hartmann]

The following reply was made to PR ports/178977; it has been noted by GNATS.

From: "O. Hartmann" <ohartman at zedat.fu-berlin.de>
To: Dimitry Andric <dim at FreeBSD.org>
Cc: bug-followup at FreeBSD.org
Subject: Re: ports/178977: x11-drivers/xf86-video-intel:  Assertion failed:
 (TheLoop->getLoopPreheader()
Date: Sat, 25 May 2013 20:55:27 +0200

 --=-7W07MXWtnrgrMbGxjNwR
 Content-Type: text/plain; charset="us-ascii"
 Content-Transfer-Encoding: quoted-printable
 
 The Email has been "intercepted" by the filter at bugmaster at freebsd.org,
 I guess due to the attachments.
 
 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).  Can you please
 > post the /tmp/sna_accel-cXtZCu.c and /tmp/sna_accel-cXtZCu.sh files it
 > has dropped?
 >=20
 > If you are feeling adventurous, apply the following patch to
 > contrib/llvm:
 >=20
 >   <http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Vectoriz=
 e/LoopVectorize.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
 
 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).  Can you please
 > post the /tmp/sna_accel-cXtZCu.c and /tmp/sna_accel-cXtZCu.sh files it
 > has dropped?
 
 Attached, as requested ...
 But it is this time:=20
 
 sna_accel-y67zua.c
 and
 sna_accel-y67zua.sh
 
 due to another run.
 
 >=20
 > If you are feeling adventurous, apply the following patch to
 > contrib/llvm:
 
 Since I bother you having -O3 enabled for compiling ports, although its
 considered "dangerous" I have no choice, havn't I? ;-)
 
 >=20
 >
 <http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Vectorize/Lo=
 opVectorize.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
 
 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.
 
 Thanks, the issue should be closed due to my -O3 compiling. Or marked
 fixed with the provided patch?
 
 Greetings,
 Oliver
 
 
 
 --=-7W07MXWtnrgrMbGxjNwR
 Content-Type: application/pgp-signature; name="signature.asc"
 Content-Description: This is a digitally signed message part
 
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.13 (FreeBSD)
 
 iQEcBAABAgAGBQJRoQkfAAoJEOgBcD7A/5N85kYH/Rw1SV3p9KmzbGAqCCdlaSKI
 3WEklsaWprE/cuyjTdpQk1DPupuONIdq4rUJUUTWJ8VYOkK8Jle0Oi1pGZPDRA8l
 11+mUEZFS0i2uZqrYkV5NO20zpV1tzNBesahRIz8/ul5NmuBmBRxGN/Wkm8WjJiT
 HWzAhRmO27H8w9JEcbI+Iq4g2nzF8B320yTXQ0ZZQgoQfmEDK/Q6xN59FUNotV0h
 AZM74sgSdG8Rva43FMQ5KtOy112FnsqD1BR93vA+slLZvmlgbUlXztk2wmQlUATw
 Bxh1gDXiQYfFOcu5kCDNLujUpmaMaOIH4haxgXpLEC4auHZqwgPStiQTKfwnkm4=
 =c6xy
 -----END PGP SIGNATURE-----
 
 --=-7W07MXWtnrgrMbGxjNwR--