[llvm] r227550 - [AArch64]Fix PR21675, a bug about lowering llvm.ctpop.i32. We should noot use "DAG.getUNDEF(MVT::v8i8)" to get all zero vector.

[Hans Wennborg]

On Thu, Jan 29, 2015 at 6:13 PM, Hao Liu <Hao.Liu at arm.com> wrote:
> Author: haoliu
> Date: Thu Jan 29 20:13:53 2015
> New Revision: 227550
>
> URL: http://llvm.org/viewvc/llvm-project?rev=227550&view=rev
> Log:
> [AArch64]Fix PR21675, a bug about lowering llvm.ctpop.i32. We should noot use "DAG.getUNDEF(MVT::v8i8)" to get all zero vector.
> Patch by Wei-cheng Wang.

Hao, Tim: is this something we'd want to merge to 3.6?