[Pkg-opencl-devel] Bug#932707: pocl-opencl-icd: Miscompilation regression on pocl 1.3 with LLVM 6 (does not occur on LLVM 7/8)

[Andreas Kloeckner]

Package: pocl-opencl-icd
Version: 1.3-2
Severity: normal

Dear Maintainer,

I am a fairly heavy user of POCL, and upon upgrading the package to
version 1.3-2, I noticed that some CI runs (e.g. this one [1]) showed
failures that look like miscompilations. These do not occur with version
1.2-5. (To make sure I got valid results, I deleted all compiler caches
before each trial.) Upon building my own POCL (a11ce0099123d) against
LLVM 7 and 8, these miscompilations disappeared. So, at least based on
this limited data, it appears that there is some issue that surfaces
when using POCL 1.3 with LLVM 6. It would be fantastic if you could
update the package to a more recent version of LLVM. And thanks for your
maintainership of POCL in Debian!

Andreas

[1] https://gitlab.tiker.net/inducer/pytential/-/jobs/83640


-- System Information:
Debian Release: bullseye/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable-debug'), (500, 'unstable'), (500, 'stable'), (1, 'experimental-debug'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.19.0-5-amd64 (SMP w/4 CPU cores)
Kernel taint flags: TAINT_USER, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages pocl-opencl-icd depends on:
ii  libpocl2  1.3-2

pocl-opencl-icd recommends no packages.

pocl-opencl-icd suggests no packages.

-- no debconf information