[llvm] r305158 - [SmallVector] Reinstate the typedefs.

[Davide Italiano via llvm-commits]

On Sun, Jun 11, 2017 at 9:51 PM, Sanjoy Das
<sanjoy at playingwithpointers.com> wrote:
> Do we have something like `(void)unused_var;` that we could use here?
>

Yes, Francis recommited a version with LLVM_ATTRIBUTE_USED. I reverted
this quickly to make the bots green again.

Thanks!

--
Davide