Debian Bug report logs - #888253
mpfr4: Please reduce optimization level on powerpcspe

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: mpfr4: Please reduce optimization level on powerpcspe

Date: Wed, 24 Jan 2018 11:38:35 +0100

[Message part 1 (text/plain, inline)]

Source: mpfr4
Version: 3.1.6-1
Severity: important
Tags: patch
User: debian-powerpc@lists.debian.org
Usertags: powerpcspe

Hello!

The mpfr4 build for the 4.x versions is currently choking on gcc ICEs [1]:

../../src/set_d64.c: In function 'mpfr_set_decimal64':
../../src/set_d64.c:429:1: error: unrecognizable insn:
 }
 ^
(insn 15 14 16 2 (set (reg:DF 155 [ _9 ])
        (subreg:DF (reg/v:DD 214 [ d ]) 0)) "../../src/set_d64.c":130 -1
     (nil))
../../src/set_d64.c:429:1: internal compiler error: in extract_insn, at recog.c:2311
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-7/README.Bugs> for instructions.
Preprocessed source stored into /tmp/ccilswZc.out file, please attach this to your bugreport.

Since this prevents powerpcspe from the libmpfr6 transition, I suggest
reducing the optimization level on this architecture as a quick work-
around. I will file an upstream gcc bug and also check whether we still
need -O0 on m68k.

Adrian

> [1] https://buildd.debian.org/status/fetch.php?pkg=mpfr4&arch=powerpcspe&ver=4.0.0-5&stamp=1516751176&raw=0

--
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer - glaubitz@debian.org
`. `'   Freie Universitaet Berlin - glaubitz@physik.fu-berlin.de
  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913

[mpfr4-ppcspe-optimization.diff (text/plain, attachment)]

Message #10 received at 888253@bugs.debian.org (full text, mbox, reply):

From: Vincent Lefevre <vincent@vinc17.net>

To: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>, 888253@bugs.debian.org

Subject: Re: Bug#888253: mpfr4: Please reduce optimization level on powerpcspe

Date: Wed, 24 Jan 2018 16:10:46 +0100

On 2018-01-24 11:38:35 +0100, John Paul Adrian Glaubitz wrote:
> Source: mpfr4
> Version: 3.1.6-1
           ^^^^^^^
I suppose that this should be 4.0.0-5.

[...]
> The mpfr4 build for the 4.x versions is currently choking on gcc ICEs [1]:
                          ^^^^^^^^^^^^

-- 
Vincent Lefèvre <vincent@vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)

Message #15 received at 888253-close@bugs.debian.org (full text, mbox, reply):

From: Matthias Klose <doko@debian.org>

To: 888253-close@bugs.debian.org

Subject: Bug#888253: fixed in mpfr4 4.0.1~rc2-1

Date: Mon, 05 Feb 2018 09:08:18 +0000

Source: mpfr4
Source-Version: 4.0.1~rc2-1

We believe that the bug you reported is fixed in the latest version of
mpfr4, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 888253@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Matthias Klose <doko@debian.org> (supplier of updated mpfr4 package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

Format: 1.8
Date: Mon, 05 Feb 2018 09:11:12 +0100
Source: mpfr4
Binary: libmpfr6 libmpfr-dev libmpfr-doc
Architecture: source
Version: 4.0.1~rc2-1
Distribution: unstable
Urgency: medium
Maintainer: Debian GCC Maintainers <debian-gcc@lists.debian.org>
Changed-By: Matthias Klose <doko@debian.org>
Description:
 libmpfr-dev - multiple precision floating-point computation developers tools
 libmpfr-doc - multiple precision floating-point computation documentation
 libmpfr6   - multiple precision floating-point computation
Closes: 888253
Changes:
 mpfr4 (4.0.1~rc2-1) unstable; urgency=medium
 .
   * mpfr 4.0.1 release candidate 2.
   * Disable building the pdf docs for now. See #889631.
   * Build using -O1 on powerpcspe. Closes: #888253.
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 ea316b8f515b178b7f20f13ef08eb9b18e57e88f 1412608 mpfr4_4.0.1~rc2.orig.tar.xz
 75bd2b6ceb40745b5aac43ab9045211fb9c239b4 10420 mpfr4_4.0.1~rc2-1.debian.tar.xz
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Checksums-Sha256:
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Files:
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 b6f9938b325911542787a5d175e42870 10420 math optional mpfr4_4.0.1~rc2-1.debian.tar.xz
 0b507bd88d3a550c2a2401a95fc49367 5440 math optional mpfr4_4.0.1~rc2-1_source.buildinfo

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