[PATCH] D106876: Remove non-affecting module maps from PCM files.

[Ilya Kuteev via Phabricator via cfe-commits]

ilyakuteev created this revision.
ilyakuteev added reviewers: aprantl, dblaikie, rsmith, dexonsmith.
ilyakuteev requested review of this revision.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.

Problem:
PCM file includes references to all module maps used in compilation which created PCM. This problem leads to PCM-rebuilds in distributed compilations as some module maps could be missing in isolated compilation. (For example in our distributed build system we create a temp folder for every compilation with only modules and headers that are needed for that particular command).

Solution:
Add only affecting module map files to a PCM-file.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D106876

Files:
  clang/include/clang/Serialization/ASTWriter.h
  clang/lib/Serialization/ASTWriter.cpp

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