jansvoboda11 added a comment.

In D135634#3866353 <https://reviews.llvm.org/D135634#3866353>, @benlangmuir 
wrote:

> I think we should deduplicate the vfs overlays if the same ivfsoverlay is 
> specified in both the pcm and the command-line.

My understanding is that `ASTUnit` never uses command-line and always adopts 
whatever is in the PCM.

In D135634#3866528 <https://reviews.llvm.org/D135634#3866528>, @bnbarham wrote:

> Do reproducers read PCMs at all or do they rebuild from the headers?

I don't know. How are they related to this patch?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D135634/new/

https://reviews.llvm.org/D135634

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