rmaz added a comment.

In D130710#3688338 <https://reviews.llvm.org/D130710#3688338>, @akyrtzi wrote:

> In D130710#3685436 <https://reviews.llvm.org/D130710#3685436>, @benlangmuir 
> wrote:
>
>> Is the functionality provided by `ORIGINAL_PCH_DIR` still useful for making 
>> it possible to move a PCH and its referenced headers?  It's not completely 
>> clear to me when this feature is used in practice.  It would be nice to 
>> remove it or change the default behaviour if possible, rather than require a 
>> new option, but I'm open to this approach if we think we can't change the 
>> default.
>
> Given that there was a recent change <https://reviews.llvm.org/D124946> 
> related to `ORIGINAL_PCH_DIR`, I'm reluctant to change the default at this 
> point, I added a `FIXME` for following up to see if we can remove it or 
> change the default later on.

We don't use this functionality, no. My change was made for the same reason: to 
be able to relocate and cache pcm files when used in conjunction with 
`-fmodule-file-home-is-cwd`, removing the field entirely would be preferable 
from our perspective.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D130710/new/

https://reviews.llvm.org/D130710

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