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

[Michael Kruse via flang-commits]

Meinersbur wrote:

There is a problem in that it breaks some ccache builds:
 * https://lab.llvm.org/staging/#/builders/206/builds/174

In any case, it renders ccache ineffective (without additional accomodations):
 * https://ccache.dev/manual/latest.html#_precompiled_headers

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