[llvm] r217629 - [CodeGenPrepare] Teach the addressing mode matcher how to promote zext.

[Joerg Sonnenberger]

On Thu, Sep 11, 2014 at 09:22:14PM -0000, Quentin Colombet wrote:
> Author: qcolombet
> Date: Thu Sep 11 16:22:14 2014
> New Revision: 217629
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=217629&view=rev
> Log:
> [CodeGenPrepare] Teach the addressing mode matcher how to promote zext.
> I.e., teach it about 'sext (zext a to ty) to ty2' => zext a to ty2.

Crashes on the attached input with -O2.

Joerg
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