[PATCH] D154130: [lit] Avoid os.path.realpath on Windows due to MAX_PATH limitations

[Tristan Labelle via Phabricator via cfe-commits]

MrTrillian updated this revision to Diff 542094.
MrTrillian edited the summary of this revision.
MrTrillian added a comment.

Update clang path canonicalization to avoid resolving substitute drives (ie resolving to a path under a different root). This requires much less change to tests.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D154130/new/

https://reviews.llvm.org/D154130

Files:
  clang/include/clang/Basic/FileManager.h
  clang/lib/Basic/FileManager.cpp
  clang/test/ExtractAPI/relative_include.m
  clang/test/Lexer/case-insensitive-include-win.c
  llvm/cmake/modules/AddLLVM.cmake
  llvm/docs/CommandGuide/lit.rst
  llvm/docs/TestingGuide.rst
  llvm/utils/lit/lit/LitConfig.py
  llvm/utils/lit/lit/TestRunner.py
  llvm/utils/lit/lit/builtin_commands/diff.py
  llvm/utils/lit/lit/cl_arguments.py
  llvm/utils/lit/lit/discovery.py
  llvm/utils/lit/lit/util.py
  llvm/utils/lit/setup.py
  llvm/utils/lit/tests/Inputs/config-map-discovery/driver.py
  llvm/utils/lit/tests/Inputs/config-map-discovery/lit.alt.cfg
  llvm/utils/lit/tests/Inputs/use-llvm-tool-required/lit.cfg
  llvm/utils/lit/tests/Inputs/use-llvm-tool/lit.cfg
  llvm/utils/lit/tests/lit.cfg
  llvm/utils/llvm-lit/llvm-lit.in

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