[PATCH] D53032: [clangd] Minimal implementation of automatic static index, behind a flag.

[Sam McCall via Phabricator via cfe-commits]

sammccall created this revision.
sammccall added a reviewer: ioeric.
Herald added subscribers: cfe-commits, jfb, kadircet, arphaman, jkorous, MaskRay, ilya-biryukov, mgorny.

See tinyurl.com/clangd-automatic-index for design and goals.

Lots of limitations to keep this patch smallish, TODOs everywhere:

- no serialization to disk
- no changes to dynamic index, which now has a much simpler job
- no partitioning of symbols by file to avoid duplication of header symbols
- no reindexing of edited files
- only a single worker thread
- compilation database is slurped synchronously (doesn't scale)
- uses memindex, rebuilds after every file (should be dex, periodically)

Still needs tests, but should be ready for review of the basic shape.


Repository:
  rCTE Clang Tools Extra

https://reviews.llvm.org/D53032

Files:
  clangd/CMakeLists.txt
  clangd/ClangdLSPServer.cpp
  clangd/ClangdLSPServer.h
  clangd/ClangdServer.cpp
  clangd/Compiler.cpp
  clangd/Compiler.h
  clangd/GlobalCompilationDatabase.cpp
  clangd/GlobalCompilationDatabase.h
  clangd/index/Background.cpp
  clangd/index/Background.h
  clangd/tool/ClangdMain.cpp

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