[llvm] Run pre-merge build with -k 0 to ensure all tests runs (PR #84828)

[Mehdi Amini via llvm-commits]

joker-eph wrote:

I was satisfied with the green mark for the buildkite test passing and didn't check the log: it didn't run anything...

This seems like an issue with our premerge config: it does not run at all when we modify this script!


https://github.com/llvm/llvm-project/pull/84828