[cfe-dev] Will Clang use PCH format to implement C++20 module system?

[Yafei Liu via cfe-dev]

Hi all, I'm curious if the PCH format will be used to implement C++20
module system? Any Clang community discussions or documents on this?

What's more, I'm inventing a language using LLVM, and I want to generate
some middle layer to communicate with c++ module, so is there any tools or
apis to generate a PCH?
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