[all-commits] [llvm/llvm-project] 25d1ac: [clang][deps] Only write preprocessor info into PC...

[Jan Svoboda via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 25d1ac11d537debb217c65c2bcdd087a60cff58e
      https://github.com/llvm/llvm-project/commit/25d1ac11d537debb217c65c2bcdd087a60cff58e
  Author: Jan Svoboda <jan_svoboda at apple.com>
  Date:   2024-11-11 (Mon, 11 Nov 2024)

  Changed paths:
    M clang/include/clang/Lex/HeaderSearchOptions.h
    M clang/include/clang/Serialization/ASTWriter.h
    M clang/lib/Serialization/ASTReader.cpp
    M clang/lib/Serialization/GeneratePCH.cpp
    M clang/lib/Tooling/DependencyScanning/DependencyScanningWorker.cpp

  Log Message:
  -----------
  [clang][deps] Only write preprocessor info into PCMs (#115239)

This patch builds on top of
https://github.com/llvm/llvm-project/pull/115237 and
https://github.com/llvm/llvm-project/pull/115235, only passing the
`Preprocessor` object to `ASTWriter`. This reduces the size of scanning
PCM files by 1/3 and speeds up scans by 16%.



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