[Openmp-dev] [llvm-dev] RFC: Upcoming release schedules and creating a formal schedule for future releases

[Tom Stellard via Openmp-dev]

On 1/6/21 6:11 AM, Blower, Melanie I wrote:
> Tom, how did you detect the libclang ABI regression, is there automatic testing? Was there a discussion on the email lists, I missed it, would like to learn more. --Melanie
> 

It was reported by a user: https://bugs.llvm.org/show_bug.cgi?id=46526

We only have automatic testing for the libLLVM.so ABI.  We really need 
to add this for libclang.so too, so I'm looking into how to get this set up.

-Tom

>> -----Original Message-----
>> From: llvm-dev <llvm-dev-bounces at lists.llvm.org> On Behalf Of Hans
>> Wennborg via llvm-dev
>> Sent: Wednesday, January 6, 2021 3:20 AM
>> To: Tom Stellard <tstellar at redhat.com>
>> Cc: llvm-dev <llvm-dev at lists.llvm.org>; Release-testers <release-
>> testers at lists.llvm.org>; clang developer list <cfe-dev at lists.llvm.org>; openmp-
>> dev (openmp-dev at lists.llvm.org) <openmp-dev at lists.llvm.org>; LLDB Dev
>> <lldb-dev at lists.llvm.org>
>> Subject: Re: [llvm-dev] [Openmp-dev] RFC: Upcoming release schedules and
>> creating a formal schedule for future releases
>>
>> This sounds good to me (maybe spell out roughly what date 2.0.0-rc1 would be
>> to make it easier to get an overview).
>>
>> Thanks,
>> Hans
>>
>> On Tue, Jan 5, 2021 at 5:33 AM Tom Stellard via Openmp-dev <openmp-
>> dev at lists.llvm.org> wrote:
>>>
>>> Hi,
>>>
>>> I want to give an update on the status of the LLVM 11 and LLVM 12
>>> releases.  11.0.1-final is expected to be tagged this week, along with
>>> 11.1.0-rc1.  Unfortunately, we had an ABI regression in libclang.so
>>> between LLVM 10 and LLVM 11, so we need to do an 11.1.0 release to
>>> correct this.  This happened one other time where we had to bump the
>>> minor version to correct an ABI breakage.  So, LLVM 11.0.1 libclang
>>> will be ABI compatible with LLVM 11, and LLVM 11.1.0 libclang will be
>>> ABI compatible  with LLVM != 11.
>>>
>>> For LLVM 12 the proposed branch date is Jan 26.  I'm hoping we will
>>> have the 2 LLVM 11.x releases done before that.
>>>
>>> In addition to all this, I would like to propose an official
>>> week-of-the-year based release schedule that we can use for all future
>>> releases.  What I'm proposing is not really any different in terms of
>>> dates from what we've been doing for the last several years.  My main
>>> goal is just to get this documented so it's clear to the community and
>>> the release managers what the expectations are.  Here is the proposed
>>> scheduled:
>>>
>>> 1.0.0-rc1   4th Tue in January
>>> 1.0.0-rc2   + 4 Weeks
>>> 1.0.0-final + 2 Weeks  (10th Tuesday ~mar 9)
>>> 1.0.1-rc1   + 4 Weeks
>>> 1.0.1-rc2   + 4 Weeks
>>> 1.0.1-final + 2 Weeks  (20th Tuesday ~may 18)
>>>
>>> 2.0.0-rc1   + 10 Weeks (+26 Weeks From 1.0.0-rc1)
>>> 2.0.0-rc2   +  4 Weeks
>>> 2.0.0-final +  2 weeks (36th Tuesday ~sep 7)
>>> 2.0.1-rc1   +  4 weeks
>>> 2.0.1-rc2   +  4 weeks
>>> 2.0.1-final +  2 weeks (46th Tuesday ~nov 16
>>>
>>> The release branches will be created on the same day as -rc1.
>>>
>>> If there are no objections to this, I will add it to the documentation
>>> next week.
>>>
>>> -Tom
>>>
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