MaskRay added a comment.

In D139717#4001688 <https://reviews.llvm.org/D139717#4001688>, @davide wrote:

> In D139717#4001685 <https://reviews.llvm.org/D139717#4001685>, @MaskRay wrote:
>
>> In D139717#3998077 <https://reviews.llvm.org/D139717#3998077>, @manojgupta 
>> wrote:
>>
>>> Xlinker still works. Xcompiler is failing.
>>>
>>> A google search will show that Xcompiler is a wide-spread option used by 
>>> many packages. Whether or not GCC supports it is not relevant. Please do 
>>> not remove options just because you do not use them.
>>
>> Can you give an example how they use `-Xcompiler`?
>>
>>   % gcc -Xcompiler,-fpic -c a.c
>>   gcc: error: unrecognized command-line option ‘-Xcompiler,-fpic’
>>   % gcc -Xcompiler -fpic -c a.c
>>   gcc: error: unrecognized command-line option ‘-Xcompiler’; did you mean 
>> ‘--compile’?
>>
>> My commit message clearly says why the joined form is awkward and should be 
>> removed.
>> It seems that the many occurrences you found are likely for GNU libtool 
>> (`-Xcompiler foo` `-Wc,foo`), not for Clang Driver.
>
> This is not about the philosophical correctness of the patch, it's about the 
> transition period and allowing consumers to migrate.
> If you want remove options, provide a deprecation window, and then remove. 
> Noone is objecting about that.

`-Xparser` has always leading to such a warning: `warning: argument unused 
during compilation: '-Xparser' [-Wunused-command-line-argument]`, perhaps since 
forever when the option was added in the first place?
The message is different from `... deprecation ...` but isn't it sufficient as 
well?


Repository:
  rG LLVM Github Monorepo

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

https://reviews.llvm.org/D139717

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