[llvm-dev] ORC error: No callback manager available

[Greg Nancarrow via llvm-dev]

Hi,

Any update on this? Anyone?

Greg


On Fri, Jun 26, 2020 at 3:04 AM David Blaikie <dblaikie at gmail.com> wrote:
>
> +Lang Hames, Lord of ORCs
>
> On Thu, Jun 25, 2020 at 4:49 AM Greg Nancarrow via llvm-dev
> <llvm-dev at lists.llvm.org> wrote:
> >
> > Hi LLVM Developers,
> >
> > I have a query about an LLVM error message that I'm encountering and I
> > hope it's appropriate to post to this mailing list about it.
> >
> > Postgres can be built with LLVM-based JIT support.
> > I find that when running on Linux (RHEL8) on IBM Z hardware, using
> > LLVM8+, I'm seeing many instances of the following LLVM error message
> > appearing in the Postgres server log:
> >
> >     ORC error: No callback manager available for s390x-ibm-linux
> >
> > (strangely, it otherwise doesn't seem to be causing any problems)
> >
> > Looking through the LLVM source code, it appears that for the
> > "systemz" architecture, there is  currently no local CCMgr
> > implementation available, and this then prevents indirection support
> > and COD layer support. BUT - apparently it can still function (maybe
> > less efficiently?) without these?
> > Is somebody able to clarify exactly what that error message means and
> > what the limitations are? Is it unwise to use LLVM on architectures on
> > which this error is reported?
> > I looked through the LLVM V10 source code and there still seems to be
> > this issue for systemz.
> >
> > Secondly, LLVM sends this error message to standard error. As a caller
> > of the LLVM library, it would be nice to be able to redirect such
> > messages from the library - is it possible?
> >
> > Hope you can advise,
> > Greg
> > _______________________________________________
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