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

[Michał Górny via flang-commits]

mgorny wrote:

Thanks! I'm not 100% sure whether it worked, since the build OOM-ed hard for me with `-j3` anyway, but it didn't OOM on `lib/Frontend`, so perhaps it did.

For me, the worst offender is `lib/Lower`, with `lib/Semantics` going next, and then probably `lib/Evaluate` and `lib/Optimizer/Transforms` (these three OOM with `-j4`).

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