Re: JIT breaks PostGIS

Greetings,

* Tom Lane (tgl@sss.pgh.pa.us) wrote:
> Christoph Berg <myon@debian.org> writes:
> > The question will be coming up eventually, though, and I think the
> > options on the packaging side are:
>
> > 1) Disable jit completely
> > 2) Compile --with-llvm, but disable jit in the config by default
> > 3) Compile --with-llvm, but disable jit for older llvm versions
> > 4) Enable jit everywhere where llvm >= 3.9 is available
>
> > Option 4 is what the Debian packages implement now, but it might make
> > sense to go to 2 or 3 for PG11 (only).
>
> Well, right now JIT is certainly beta-quality code, so you ought
> to expect bugs.  We have an open item at
> https://wiki.postgresql.org/wiki/PostgreSQL_11_Open_Items
> to decide whether to ship v11 with JIT enabled by default or not,
> but I don't expect that decision will be taken until much closer
> to release.  Until then, I think you should be doing (4) so that
> we can gather data to inform the eventual decision.

+1.

Thanks!

Stephen