[all-commits] [llvm/llvm-project] dad804: [clangd] Improve clangd-indexer performance

[Aleksandr Platonov via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: dad804a193edf092322d80bb404fabb2f6f2c888
      https://github.com/llvm/llvm-project/commit/dad804a193edf092322d80bb404fabb2f6f2c888
  Author: Aleksandr Platonov <platonov.aleksandr at huawei.com>
  Date:   2020-11-11 (Wed, 11 Nov 2020)

  Changed paths:
    M clang-tools-extra/clangd/indexer/IndexerMain.cpp

  Log Message:
  -----------
  [clangd] Improve clangd-indexer performance

This is a try to improve clangd-indexer tool performance:
- avoid processing already processed files.
- use different mutexes for different entities (e.g. do not block insertion of references while symbols are inserted)

Results for LLVM project indexing:
- before: ~30 minutes
- after: ~10 minutes

Reviewed By: kadircet

Differential Revision: https://reviews.llvm.org/D91051