[PATCH] D59377: Frontend: Remove CompilerInstance::VirtualFileSystem, NFC

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

dexonsmith added a comment.

In D59377#1431203 <https://reviews.llvm.org/D59377#1431203>, @jkorous wrote:

> In D59377#1430002 <https://reviews.llvm.org/D59377#1430002>, @dexonsmith wrote:
>
> > ... since I noticed that FileManager ...
>
>
> This kind of implies that we should move the comment from `FileManager` constructor implementation to the header thus making it an explicit part of the interface contract.
>
>   // If the caller doesn't provide a virtual file system, just grab the real
>   // file system.
>   
>
> Maybe https://reviews.llvm.org/D59388 would be the right place to do it.


Good call; since I'm relying on it in this patch I've updated this patch to document it.


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