Re: Do we work with LLVM 12 on s390x?

On 4/22/21 6:35 PM, Tom Stellard wrote:
> On 4/21/21 6:40 AM, Honza Horak wrote:
>> On 3/19/21 8:15 PM, Tom Lane wrote:
>>> Andres Freund <andres(at)anarazel(dot)de> writes:
>>>> I think the error above comes from a "mismatch" between the clang used
>>>> to compile bitcode, and the LLVM version linked to. Normally we're
>>>> somewhat tolerant of differences between the two, but there was an ABI
>>>> change at some point, leading to that error.  IIRC I hit that, but it
>>>> vanished as soon as I used a matching libllvm and clang.
>>>
>>> Thanks, I passed that advice on.
>>>
>>>             regards, tom lane
>>
>> Tom Stellard was so kind to look at this issue deeper with his LLVM
>> skills and found PostgreSQL is not actually handling the LLVM
>> perfectly. He's working on improving the patch, but sharing even the
>> first attempt with upstream seems like a good idea:
>>
>> https://src.fedoraproject.org/rpms/postgresql/pull-request/29
>>
>
> I wrote a new patch based on the bug discussion[1].  It works around
> the issue specifically on s390x rather than disabling specific
> CPUs and features for all targets.  The patch is attached.
>
>
> [1]
> https://www.postgresql.org/message-id/flat/16971-5d004d34742a3d35%40postgresql.org

Thanks, Tom, it looks good in koji build, so merging so far. We very
much appreciate your help here.

Cheers,
Honza

>
>> Regards,
>> Honza
>>
>