Add -tags llvm23

[davecheney]

Tracking issue for LLVM 23 support.

[davecheney]

@deadprogram i'm going to noodle on this in the background. Adding llvm23 support means supporting 9 concurrent llvm versions. Would this be a time to talk about dropping llvm15, or at least removing it from the support matrix and CI?

[deadprogram]

@deadprogram i'm going to noodle on this in the background. Adding llvm23 support means supporting 9 concurrent llvm versions. Would this be a time to talk about dropping llvm15, or at least removing it from the support matrix and CI?

I think yes we can both drop and remove it.

[davecheney]

Do you want to align dropping llvm15 with 0.43; ie, start on it for 0.44 ?

[deadprogram]

Do you want to align dropping llvm15 with 0.43; ie, start on it for 0.44 ?

I think start with 0.44 please, since I hope we can release 0.43 very soon.

[davecheney]

5. > Do you want to align dropping llvm15 with 0.43; ie, start on it for 0.44 ?

I think start with 0.44 please, since I hope we can release 0.43 very soon.

🫡 SGTM. I dunno what the depreciation policy is, but maybe saying 0.43 is the last release to actively support LLVM15 in the release notes could be a thing.

[dgryski]

#5782