[all-commits] [llvm/llvm-project] dbf486: [clangd] Config: Index.Background

[Sam McCall via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: dbf486c0de92c76df77c1a1f815cf16533ecbb3a
      https://github.com/llvm/llvm-project/commit/dbf486c0de92c76df77c1a1f815cf16533ecbb3a
  Author: Sam McCall <sam.mccall at gmail.com>
  Date:   2020-07-14 (Tue, 14 Jul 2020)

  Changed paths:
    M clang-tools-extra/clangd/Config.h
    M clang-tools-extra/clangd/ConfigCompile.cpp
    M clang-tools-extra/clangd/ConfigFragment.h
    M clang-tools-extra/clangd/ConfigYAML.cpp
    M clang-tools-extra/clangd/index/Background.cpp
    M clang-tools-extra/clangd/unittests/BackgroundIndexTests.cpp
    M clang-tools-extra/clangd/unittests/ConfigCompileTests.cpp

  Log Message:
  -----------
  [clangd] Config: Index.Background

Summary:
We only support Build/Skip for now, but with 'Load' or similar as an
option for future (load existing shards but don't build new ones).

This requires creating the config for each TU on startup. In LLVM, this
is 4000 occurrences for a total of 800ms on my machine.
But together with caching from D83755 it is only 25ms.

Reviewers: kadircet

Subscribers: ilya-biryukov, MaskRay, jkorous, arphaman, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D83768