Add third party yklua tests to CI.

[vext01]

This currently fails due to this deopt bug, hence this is a draft.

A similar change should be applied to yklua so that these tests are run in CI there too.

I'll start investigating that deopt bug tomorrow.

[ltratt]

@vext01 I think we can now consider merging this one?

[vext01]

I think so :)

[ltratt]

OK, please undraft it?

[ltratt]

I've removed these from the queue because these have so far spent an hour running in CI, which is clearly vastly too long for us to want to run for each PR.

[vext01]

Re-visiting this, just noticed that we only test yklua with serialised compilation. I followed precedent in this PR, but is that what we want?

[ltratt]

Serialised compilation is a choice with pros and cons. In general it forces more things to be tested, but "in general" is the key qualifier.

[vext01]

Oops. I was wrong. We test both modes.

If you are happy with that, please merge.

[ltratt]

The reason I cancelled the merge is that these tests took over an hour to run. We can't merge them until we know they run in reasonable time.

It might be that these long-running tests should be run overnight, or after a PR's merged, or something like that?

[vext01]

I must admit I don't know how long the tests take to run since your changes last week. Will measure.

[vext01]

I've merged master and added a commit that runs the extra tests only in release mode in the interest of saving time. That should be an OK compromise.

One of the tests hits the ">32-bit constant" todo that is fixed as part of #1606, so we will need to wait for this first.

OK to squash in the meantime?

[ltratt]

I think this one is ready for squashing?

[vext01]

Currently the extra tests are run only in release mode. With your most recent change, do we want to run in the release-with-assert profile in addition?

[ltratt]

There is no release-with-assert profile here. It's probably best to run this in debug mode. I suggest doing that but measuring the effect on tryci on b16 (which is currently ~9 minutes): how much does it slow down by?