Because I maintain Chromium which always requires the most recent LLVM
release (would be good to get notified on any PRs/issues, especially
since I seem to end up merging most of the PRs anyway).
See #100725.
This is used by mesa.drivers (still on LLVM 9) as a cache key. I've
ported that change to LLVM 11 to test it and so that it doesn't get lost
in future versions. Credit for the change goes to David McFarland.
See #93946 for details.
Co-Authored-By: David McFarland <corngood@gmail.com>