[clang-tools-extra] [clangd] [C++20] [Modules] Introduce initial support for C++20 Modules (PR #66462)

[Chuanqi Xu via cfe-commits]

ChuanqiXu9 wrote:

> > @sam-mccall gentle ping~
> 
> @ChuanqiXu9 hi, can your patch add support msvc module with *.ixx suffix source? I use xmake to generate compile database, clangd cant work properly.

hi, did you meet problems when testing this? I took a quick look and I don't see I treated suffix specially. This patch find module interface unit by scanning instead of by suffixes.

https://github.com/llvm/llvm-project/pull/66462