[flang-commits] [clang] [flang] [llvm] [mlir] [polly] [CMake][LLVM] Add PCH infrastructure and LLVMSupport PCH (PR #176420)

[Renato Golin via flang-commits]

rengolin wrote:

We're getting various PCH errors in current head, too. Different ones depending on how we build. For example, enabling C++17 or RTTI (ex. for GPU builds).

https://github.com/llvm/llvm-project/pull/176420