[all-commits] [llvm/llvm-project] d3a4ef: [clangd] IncludeClenaer: Don't mark forward declar...

[Kirill Bobyrev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d3a4ef35685c6aaad74294b678e77e1b75af1918
      https://github.com/llvm/llvm-project/commit/d3a4ef35685c6aaad74294b678e77e1b75af1918
  Author: Kirill Bobyrev <kbobyrev at google.com>
  Date:   2021-12-02 (Thu, 02 Dec 2021)

  Changed paths:
    M clang-tools-extra/clangd/IncludeCleaner.cpp
    M clang-tools-extra/clangd/unittests/IncludeCleanerTests.cpp

  Log Message:
  -----------
  [clangd] IncludeClenaer: Don't mark forward declarations of a class if it's declared in the main file

This will mark more headers that are unrelated to used symbol but contain its
forawrd declaration. E.g. the following are examples of headers forward
declaring `llvm::StringRef`:

- clang/include/clang/Basic/Cuda.h
- llvm/include/llvm/Support/SHA256.h
- llvm/include/llvm/Support/TrigramIndex.h
- llvm/include/llvm/Support/RandomNumberGenerator.
- ... and more (~50 in total)

This patch is a reduced version of D112707 which was controversial.

Reviewed By: kadircet

Differential Revision: https://reviews.llvm.org/D114864