mizvekov added a comment.

I created a DR which proposes the renaming as rsmith suggested: 
https://reviews.llvm.org/D103720

In D100733#2773944 <https://reviews.llvm.org/D100733#2773944>, @aaronpuchert 
wrote:

> A new value category feels like a global change for a local problem. We can 
> explain the behavior that we want without introducing a new value category: 
> either as a “combined” overload resolution for xvalue and lvalue, where all 
> candidates for the xvalue are strictly better than any candidate for the 
> lvalue, or as a two-phase resolution that falls back only if there are no 
> candidates. These explanations are equivalent.

Sure, I had it in mind that is not necessarily how that would be explained to 
the users, but perhaps as the standard text is more geared towards the 
toolchain folks, the original explanation might be more suited there, and this 
alternative one is more didactic, as you pointed out it can be explained just 
in the context of implicit moves.

> My impression is that some people didn't like the changes that came with 
> C++11 and that it made the terminology of C and C++ somewhat inconsistent. 
> (Though I think you can work with the C++ terminology in C, there are just no 
> xvalues, but you can't work the other way around.)

Thanks. That makes sense!

In D100733#2773944 <https://reviews.llvm.org/D100733#2773944>, @aaronpuchert 
wrote:

> But perhaps I would not introduce for now an `isRValue` function. (Although C 
> doesn't have xvalues, so maybe it doesn't matter?)



In D100733#2761031 <https://reviews.llvm.org/D100733#2761031>, @rsmith wrote:

> What do we think about renaming `isRValue()` to `isPRValue()` and renaming 
> `VK_RValue` to `VK_PRValue`, adding a "real" `isRValue()`, and then 
> performing this cleanup?

We might want to hold on to the second step there (adding back another 
isRValue) for a little while, to give time for people to rebase patches and 
such, so they get a friendlier build breakage instead of some more subtle issue.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D100733/new/

https://reviews.llvm.org/D100733

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