Cameron Desrochers b5b48db12e [PCH] Allow VFS to be used for tests that generate PCH files ... When using a virtual file-system (VFS) and a preamble file (PCH) is generated, it is generated on-disk in the real file-system instead of in the VFS (which makes sense, since the VFS is read-only). However, when subsequently reading the generated PCH, the frontend passes through the VFS it has been given -- resulting in an error and a failed parse (since the VFS doesn't contain the PCH; the real filesystem does). This patch fixes that by detecting when a VFS is being used for a parse that needs to work with a PCH file, and creating an overlay VFS that includes the PCH file from the real file-system. This allows tests to be written which make use of both PCH files and a VFS. Differential Revision: https://reviews.llvm.org/D37474 llvm-svn: 312917		2017-09-11 15:03:23 +00:00
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ASTUnitTest.cpp	[Frontend] Fix printing policy for AST context loaded from file	2017-08-25 18:07:03 +00:00
CMakeLists.txt	[PCH] Allow VFS to be used for tests that generate PCH files	2017-09-11 15:03:23 +00:00
CodeGenActionTest.cpp	Refactor frontend InputKind to prepare for treating module maps as a distinct kind of input.	2017-04-26 18:57:40 +00:00
FrontendActionTest.cpp	Remove 'Filename' parameter from BeginSourceFileAction.	2017-06-09 01:36:10 +00:00
PCHPreambleTest.cpp	[PCH] Allow VFS to be used for tests that generate PCH files	2017-09-11 15:03:23 +00:00