r243851 - Fix invalid shufflevector operands

[Hans Wennborg via cfe-commits]

On Sun, Aug 2, 2015 at 8:28 AM, Simon Pilgrim <llvm-dev at redking.me.uk> wrote:
> Author: rksimon
> Date: Sun Aug  2 10:28:10 2015
> New Revision: 243851
>
> URL: http://llvm.org/viewvc/llvm-project?rev=243851&view=rev
> Log:
> Fix invalid shufflevector operands
>
> This patch fixes bug 23800 ( https://llvm.org/bugs/show_bug.cgi?id=23800#c2 ). There existed a case where the index operand from extractelement was directly used to create a shufflevector mask. Since the index can be of any integral type but the mask must only contain 32 bit integers a 64 bit index operand led to an assertion error later on.
>
> Committed on behalf of mpflanzer (Moritz Pflanzer)
>
> Differential Revision: http://reviews.llvm.org/D10838

Is this something we should merge to 3.7?