aaron.ballman added a comment.

In https://reviews.llvm.org/D30009#706171, @arphaman wrote:

> I would be ok with that. We could merge `apply_to` and `apply_only_to` into a 
> single `apply_to` matching rule set specifier (it would behave like 
> `apply_only_to`).


That sounds sensible to me.

> I guess one downside would be is that it will become harder to fill out all 
> the match rules if one wants to apply an attribute to all possible 
> declarations. I suppose the attribute documentation generator can be updated 
> to include the full match rule set for each attribute instead of just yes/no 
> in the `#pragma clang attribute` documentation column.

Okay, so here's a possibly crazy idea (and it may be way too magical): what if 
`#pragma clang attribute push(foo)` generated the fix-it hint to suggest all of 
the targets the attribute can apply to? Alternatively, what if any malformed 
parsing of `#pragma clang attribute push(foo)` automatically do this? We know 
the user is trying to apply attributes to declarations, and we know which 
attribute they're trying for, so it somewhat stands to reason that the rest of 
the syntax can be supplied for them... and we need *something* in apply_to, so 
why not default to everything?


Repository:
  rL LLVM

https://reviews.llvm.org/D30009



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