[PATCH] D52620: Added Support for StatOnly Files in VFS.

[UTKARSH SAXENA via Phabricator via cfe-commits]

usaxena95 created this revision.
Herald added subscribers: cfe-commits, mgrang.

Some files are only Statted by Clang and not read. Clang mostly uses
them for checking the existence of some files and in rare cases uses the
value of the Status to proceed further (for example while loading
module files, it checks the sizes of some files).

This change adds support to represent files that are supposed to be only
statted by Clang.


Repository:
  rC Clang

https://reviews.llvm.org/D52620

Files:
  include/clang/Basic/VirtualFileSystem.h
  lib/Basic/VirtualFileSystem.cpp
  unittests/Basic/VirtualFileSystemTest.cpp

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