Hi, On 2023-10-21 10:48:47 +1300, Thomas Munro wrote: > On Thu, Oct 19, 2023 at 6:20 AM Thomas Munro <thomas.mu...@gmail.com> wrote: > > Interestingly, a new problem just showed up on the the RHEL9 s390x > > machine "lora", where a previously reported problem [1] apparently > > re-appeared. It complains about incompatible layout, previously > > blamed on mismatch between clang and LLVM versions. I can see that > > its clang is v15 from clues in the conflig log, but I don't know which > > version of LLVM is being used. However, I see now that --with-llvm > > was literally just turned on, so there is no reason to think that this > > would have worked before or this work is relevant. Strange though -- > > we must be able to JIT further than that on s390x because we have > > crash reports in other threads (ie we made it past this and into other > > more advanced brokenness). > > I see that Mark has also just enabled --with-llvm on some POWER Linux > animals, and they have failed in various ways. The failures are > strangely lacking in detail. It seems we didn't have coverage before, > and I recall that there were definitely versions of LLVM that *didn't* > work for our usage in the past, which I'll need to dredge out of the > archives. I will try to get onto a cfarm POWER machine and see if I > can reproduce that, before and after these commits, and whose bug is > it etc.
I'm quite sure that jiting did pass on ppc64 at some point. > I doubt I can get anywhere near an s390x though, and we definitely had > pre-existing problems on that arch. IMO an LLVM bug, rather than a postgres bug, but I guess it's all a matter of perspective. https://github.com/llvm/llvm-project/issues/53009#issuecomment-1042748553 I had made another bug report about this issue at some point, but I can't refind it right now. Greetings, Andres Freund
