vsapsai added a comment.

In D104351#2824505 <https://reviews.llvm.org/D104351#2824505>, @jansvoboda11 
wrote:

> This seems reasonable on first look. Can you add a test that demonstrates the 
> problem this patch solves?

There is no externally observable change that can be tested, I'm only making 
sure the existing tests keep passing. In the subsequent commit I change the 
restoration of `isImport` flag from .pcm because it reflects how a header is 
used, not an inherent property of a header that stays the same regardless of 
the header usage. To make things easier to implement I've decided to separate 
these two qualities of a header. And I think it fits names better, like 
`hasFileBeenImported`. With this change we don't need to add in the comments 
that it means hasFileBeenImportedOrHasPragmaOnce.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D104351/new/

https://reviews.llvm.org/D104351

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