[PATCH] D89488: WIP: FileManager: Shrink FileEntryRef to the size of a pointer

[Duncan P. N. Exon Smith via Phabricator via cfe-commits]

dexonsmith created this revision.
dexonsmith added a reviewer: arphaman.
Herald added subscribers: usaxena95, ributzka, kadircet.
dexonsmith requested review of this revision.

This is a WIP patch to shrink FileEntryRef to the size of a pointer,
posting for early feedback in case someone has some. This pulled in more
changes than I expected, and I'll try to find some things to split off
and commit incrementally, but I think this concept is sound
(`BasicTests` passes, still have to build and test the rest of clang).


https://reviews.llvm.org/D89488

Files:
  clang-tools-extra/clangd/ParsedAST.cpp
  clang/include/clang/Basic/FileManager.h
  clang/include/clang/Basic/SourceManager.h
  clang/lib/Basic/FileManager.cpp
  clang/lib/Basic/SourceManager.cpp
  clang/lib/Frontend/DependencyFile.cpp
  clang/lib/Lex/HeaderSearch.cpp
  clang/lib/Tooling/DependencyScanning/ModuleDepCollector.cpp
  clang/unittests/Basic/FileManagerTest.cpp
  clang/unittests/Basic/SourceManagerTest.cpp

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