Qix- marked 3 inline comments as done.
Qix- added a comment.

So I went back and checked and I remember why I didn't add explicit support for 
GNU/declspec attributes - they actually perform symbol lookups in the 
surrounding scope. I believe there's an issue right now with plugins that 
GNU-style attributes parser assumes that they're being parsed from the Tablegen 
stuff and thus expect the attribute classes to be parameterized as e.g. taking 
arguments or not. Therefore, putting arbitrary tokens in GNU-style and (as far 
as I can tell) declspec-style attributes is expressely not supported by the 
compiler. Also I believe this makes sense, too, because those syntaxes aren't 
spec'd to allow arbitrary tokens like C2x and C++ attributes are.

In fact, in my testing, the GNU-style attributes in plugins can't accept 
arguments whatsoever without getting some sort of compilation error. Maybe I'm 
not using the plugin system correctly, though.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D99861/new/

https://reviews.llvm.org/D99861

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