[PATCH] x86: Don't remove empty x86 properties

[Cary Coutant]

> That is not right.  It should be
>
> 1. USED follows OR_AND.
> 2.  NEEDED follows OR,
>
> Can you point me where x86-64 psABI says otherwise?

I have done so several times:

https://sourceware.org/ml/binutils/2018-11/msg00263.html
https://sourceware.org/ml/binutils/2018-12/msg00008.html
https://sourceware.org/ml/binutils/2018-12/msg00045.html
https://sourceware.org/ml/binutils/2018-12/msg00048.html

-cary