[PATCH] D53329: Generate DIFile with main program if source is not available

[Yonghong Song via Phabricator via cfe-commits]

yonghong-song added a comment.

In the above `/virtual/main.c` is a memory mapped file. The `invocation0.getPreprocessorOpts().addRemappedFile(...)` adds the mapping
for the compilation.


Repository:
  rC Clang

https://reviews.llvm.org/D53329