r227861 - When generating llvm.used, we may need an addrspacecast instead of a bitcast.

[Hans Wennborg]

On Mon, Feb 2, 2015 at 1:05 PM, Justin Holewinski
<jholewinski at nvidia.com> wrote:
> Author: jholewinski
> Date: Mon Feb  2 15:05:49 2015
> New Revision: 227861
>
> URL: http://llvm.org/viewvc/llvm-project?rev=227861&view=rev
> Log:
> When generating llvm.used, we may need an addrspacecast instead of a bitcast.
>
> Summary:
> This is especially important for targets that use multiple address spaces,
> and commonly place global variables in address spaces other than zero.
>
> Fixes PR22383
>
> Test Plan: New test case added: llvm-used.cu
>
> Reviewers: jingyue
>
> Subscribers: llvm-commits
>
> Differential Revision: http://reviews.llvm.org/D7345

Is this something we should merge to the 3.6 branch?