rsundahl added a comment.


In D139717#3987963 <https://reviews.llvm.org/D139717#3987963>, @MaskRay wrote:

>> This change is breaking internal builds. We use the -Xfoo pattern but can 
>> now no longer manage whether we allow an unused -Xfoo option to pass as a 
>> warning or promote it to an error.
>
> Which `-Xfoo` is used? Do your internal builds reserve `-Xfoo` as a 
> placeholder to do other non-upstream work? Then you can consider `-Gfoo` if 
> your builds don't need the mips semantics.

We use -Xparser

> Is it possible to clean up the previously-ignored-with-a-warning `-Xfoo`?

Possibly. Maybe preferably. Builds are breaking now though. Dependent projects 
would have to be notified and changes scheduled. Was there a diff that we 
should have been part of? It looks like at least two of us are surprised with 
downstream consequences.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D139717/new/

https://reviews.llvm.org/D139717

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