[flang-commits] [clang] [flang] [lld] [llvm] [mlir] [RFC] Use pre-compiled headers to speed up LLVM build (~1.5-2x) (PR #173868)

[Aiden Grossman via flang-commits]

https://github.com/boomanaiden154 commented:

Not exactly sure how you need to invoke the clang driver to use precompiled headers, but it seems like sccache might not have support currently (https://github.com/mozilla/sccache/issues/615). Might still be useful for local builds, but we would have to turn it off in premerge CI until it works with caching.

Either way, I would probably like to see a proper RFC on discourse for this.

https://github.com/llvm/llvm-project/pull/173868