Re: upcoming API changes for LLVM 12

Andres Freund <andres@anarazel.de> writes:
> On 2020-10-16 02:45:51 -0300, Alvaro Herrera wrote:
>>> 2) When do we want to add LLVM 12 support? PG will soon stop compiling
>>> against LLVM 12, which will be released in about 6 months. I worked
>>> with Lang to make most of the breaking changes in a branch (to be
>>> merged in the next few days), but it's possible that there will be a
>>> few smaller changes.

>> hmm, how regular are LLVM releases?  I mean, what if pg14 ends up being
>> released sooner than LLVM12 – would there be a problem?

> Pretty unlikely - they're half yearly releases, and come out on a
> somewhat regular schedule. They've moved a few weeks but not more. And
> even if they did - having a few #ifdefs for LLVM 12 would be ok anyway.

Yeah.  As long as we're not breaking the ability to build against older
LLVM, I can't see a reason not to apply and back-patch these changes.
We usually want all supported PG versions to build against newer tool
chains, and this seems to fall into that category.

			regards, tom lane