[cfe-dev] [lldb-dev] [llvm-dev] RFC: Using GitHub Actions for CI testing on the release/* branches

Tue Nov 12 01:32:34 PST 2019

Although I've not had any Github Action experience, and despite being one
who has raised objections to other parts of adopting github features, this
sounds like a sensible idea. It seems odd to me that we don't already have
some form of CI for our releases, so anything that improves on that is
great.

James

On Tue, 12 Nov 2019 at 00:34, David Blaikie via lldb-dev <
lldb-dev at lists.llvm.org> wrote:

> Not having given it deep thought/analysis, nor understanding much of the
> GIT infrastructure here, but: Sounds good to me, for whatever that's worth
> :)
>
> On Mon, Nov 11, 2019 at 4:32 PM Tom Stellard via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
>
>> Hi,
>>
>> I would like to start using GitHub Actions[1] for CI testing on the
>> release/*
>> branches.  As far as I know we don't have any buildbots listening to the
>> release branches, and I think GitHub Actions are a good way for us to
>> quickly
>> bring-up some CI jobs there.
>>
>> My proposal is to start by adding two post-commit CI jobs to the
>> release/9.x branch.
>> One for building and testing (ninja checka-all) llvm/clang/lld on Linux,
>> Windows, and Mac, and another for detecting ABI changes since the 9.0.0
>> release.
>>
>> I have already implemented these two CI jobs in my llvm-project fork on
>> GitHub[2][3],
>> but in order to get these running in the main repository, I would need to:
>>
>> 1. Create a new repository in the LLVM organization called 'actions' for
>> storing some custom
>> builds steps for our CI jobs (see [4]).
>> 2. Commit yaml CI definitions to the .github/workflows directory in the
>> release/9.x
>> branch.
>>
>> In the future, I would also like to add buil and tests jobs for other
>> sub-projects
>> once I am able to get those working.
>>
>> In addition to being used for post-commit testing, having these CI
>> definitions in the
>> main tree will make it easier for me (or anyone) to do pre-commit testing
>> for the
>> release branch in a personal fork.  It will also allow me to experiment
>> with some new
>> workflows to help make managing the releases much easier.
>>
>> I think this will be a good way to test Actions in a low traffic
>> environment to
>> see if they are something we would want to use for CI on the master
>> branch.
>>
>> Given that we are close to the end of the 9.0.1 cycle, unless there are
>> any
>> strong objections, I would like to get this enabled by Mon Nov 18, to
>> maximize its
>> usefulness.  Let me know what you think.
>>
>> Thanks,
>> Tom
>>
>> [1] https://github.com/features/actions
>> [2]
>> https://github.com/tstellar/llvm-project/commit/952d80e8509ecc95797b2ddbf1af40abad2dcf4e/checks?check_suite_id=305765621
>> [3]
>> https://github.com/tstellar/llvm-project/commit/6d74f1b81632ef081dffa1e0c0434f47d4954423/checks?check_suite_id=303074176
>> [4] https://github.com/tstellar/actions
>>
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