[libcxx-commits] [libcxx] [libc++] Improve the output of the generated-output CI job (PR #68903)

[Louis Dionne via libcxx-commits]

ldionne wrote:

The GH Actions checks that the files are formatted properly. The generated-files check modified by this PR checks that we maintain an up-to-date `ignore_format.txt` file -- those have different purposes.

I agree it's terrible to wait 2hrs only for this check to fail. I am working on moving that to a GH action here: https://github.com/ldionne/llvm-project/pull/2

https://github.com/llvm/llvm-project/pull/68903