Date: Mon, 23 Oct 2023 08:27:23 -0700
From: Mark Wong <markwkm@gmail.com>
To: Thomas Munro <thomas.munro@gmail.com>
Cc: Tom Lane <tgl@sss.pgh.pa.us>, Ronan Dunklau <ronan.dunklau@aiven.io>,
	Devrim =?iso-8859-1?B?R/xuZPx6?= <devrim@gunduz.org>,
	PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>,
	Fabien COELHO <coelho@cri.ensmp.fr>,
	Dmitry Dolgov <9erthalion6@gmail.com>,
	Andres Freund <andres@anarazel.de>
Subject: Re: LLVM 16 (opaque pointers)
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On Mon, Oct 23, 2023 at 01:15:04PM +1300, Thomas Munro wrote:
> On Sun, Oct 22, 2023 at 2:44 PM Thomas Munro <thomas.munro@gmail.com> wrote:
> > On Sat, Oct 21, 2023 at 2:45 PM Tom Lane <tgl@sss.pgh.pa.us> wrote:
> > > Thomas Munro <thomas.munro@gmail.com> writes:
> > > > (It'd be nice if the
> > > > build farm logged "$LLVM_CONFIG --version" somewhere.)
> > >
> > > It's not really the buildfarm script's responsibility to do that,
> > > but feel free to make configure do so.
> >
> > Done, copying the example of how we do it for perl and various other things.
> 
> Build farm measles update:
> 
> With that we can see that nicator (LLVM 15 on POWER) is green.  We can
> see that cavefish (LLVM 6 on POWER) is red as expected.  We can also
> see that bonito (LLVM 7 on POWER) is red, so my earlier theory that
> this might be due to the known bug we got fixed in LLVM 7 is not
> enough.  Maybe there are other things fixed on POWER somewhere between
> those LLVM versions?  I suspect it'll be hard to figure out without
> debug builds and backtraces.

I haven't gotten around to disabling llvm on any of my animals with llvm
< 7 yet.  Do you still want to hold on that?

> One thing is definitely our fault, though.  xenodermus shows failures
> on REL_12_STABLE and REL_13_STABLE, using debug LLVM 6 on x86.  I
> couldn't reproduce this locally on (newer) debug LLVM, so I bugged
> Andres for access to the host/libraries and chased it down.  There is
> some type punning for a function parameter REL_13_STABLE and earlier,
> removed by Andres in REL_14_STABLE, and when I back-patched my
> refactoring I effectively back-patched a few changes from his commit
> df99ddc70b97 that removed the type punning, but I should have brought
> one more line from that commit to remove another trace of it.  See
> attached.

Here are my list of llvm-config versions and distros for s390x and POWER
(didn't see any issues on aarch64 but I grabbed all the info at the same
time.)

s390x:

branta: 10.0.0 Ubuntu 20.04.4 LTS
cotinga: 6.0.0 Ubuntu 18.04.6 LTS
perch: 6.0.0 Ubuntu 18.04.6 LTS
sarus: 14.0.0 Ubuntu 22.04.1 LTS
aracari: 15.0.7 Red Hat Enterprise Linux 8.6
pipit: 15.0.7 Red Hat Enterprise Linux 8.6
lora: 15.0.7 Red Hat Enterprise Linux 9.2
mamushi: 15.0.7 Red Hat Enterprise Linux 9.2
pike: 11.0.1 Debian GNU/Linux 11
rinkhals: 11.0.1 Debian GNU/Linux 11


POWER:

bonito: 7.0.1 Fedora 29
cavefish: 6.0.0 Ubuntu 18.04.6 LTS
demoiselle: 5.0.1 openSUSE Leap 15.0
elasmobranch: 5.0.1 openSUSE Leap 15.0
babbler: 15.0.7 AlmaLinux 8.8
pytilia: 15.0.7 AlmaLinux 8.8
nicator: 15.0.7 AlmaLinux 9.2
twinspot: 15.0.7 AlmaLinux 9.2
cascabel: 11.0.1 Debian GNU/Linux 11
habu: 16.0.6 Fedora Linux 38
kingsnake: 16.0.6 Fedora Linux 38
krait: CentOS 16.0.6 Stream 8
lancehead: CentOS 16.0.6 Stream 8


aarch64:

boiga: 14.0.5 Fedora Linux 36
corzo: 14.0.5 Fedora Linux 36
desman: 16.0.6 Fedora Linux 38
motmot: 16.0.6 Fedora Linux 38
whinchat: 11.0.1 Debian GNU/Linux 11
jackdaw: 11.0.1 Debian GNU/Linux 11
blackneck: 7.0.1 Debian GNU/Linux 10
alimoche: 7.0.1 Debian GNU/Linux 10
bulbul: 15.0.7 AlmaLinux 8.8
broadbill: 15.0.7 AlmaLinux 8.8
oystercatcher: 15.0.7 AlmaLinux 9.2
potoo: 15.0.7 AlmaLinux 9.2
whiting: 6.0.0 Ubuntu 18.04.5 LTS
vimba: 6.0.0 Ubuntu 18.04.5 LTS
splitfin: 10.0.0 Ubuntu 20.04.6 LTS
rudd: 10.0.0 Ubuntu 20.04.6 LTS
turbot: 14.0.0 Ubuntu 22.04.3 LTS
shiner: 14.0.0 Ubuntu 22.04.3 LTS
ziege: 16.0.6 CentOS Stream 8
chevrotain: 11.0.1 Debian GNU/Linux 11

Regards,
Mark