[flang-commits] [flang] [flang] Use precompiled parsing headers (PR #130600)

[David Truby via flang-commits]

https://github.com/DavidTruby approved this pull request.

This LGTM once the other reviewers are happy!

I think you should just post the other PCH changes (for e.g. Parser and Lower) in a follow up, because we can let this one work its way through the build bots first and see if there are any issues in the simple case before expanding it.

https://github.com/llvm/llvm-project/pull/130600