[flang-commits] [flang] [flang] Use precompiled headers in Lower, Parser and Semantics (PR #131137)

[Kajetan Puchalski via flang-commits]

mrkajetanp wrote:

> What is the impact on the size of the build directories?

>From `du -h`:
440M    lib/Lower/CMakeFiles/FortranLower.dir/cmake_pch.hxx.pch
122M    lib/Parser/CMakeFiles/FortranParser.dir/cmake_pch.hxx.pch
278M    lib/Semantics/CMakeFiles/FortranSemantics.dir/cmake_pch.hxx.pch
164M    lib/Evaluate/CMakeFiles/FortranEvaluate.dir/cmake_pch.hxx.pch

But then at the same time I think some space might be saved in the specific compilation units that now no longer need to include them, so it might not be the biggest deal.

https://github.com/llvm/llvm-project/pull/131137