Without this patch, obj2yaml decodes the content of only one ".stack_size" section. Other sections are dumped with their full contents.
For a reverted revision, you can click "Add Action" - "Reopen Revision" followed by "Request Changes". There is usually no need creating a new one unless the new patch undergoes a very large refactoring.
Make sure you commit has Differential Revision: https://reviews.llvm.org/D87727 and arc diff 'HEAD^' can upload a new diff.
No problem! There are 100 commits every day and a previous test can easily get stale after, say, 6 hours.
And for a revert (e.g. f80f2516a2697218eeb7af80de3b13c38f342987), please mention the reason why it was reverted (it caused compilation issues. Even better it could have mentioned that it conflicted with a previous commit) (And a revert should be tested as well, sometimes a revert can cause new problems)