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

[Quentin Colombet]

Thanks Joerg.

I am looking at it.

If this is blocking you, do not hesitate to revert.

-Quentin
On Sep 15, 2014, at 8:25 AM, Joerg Sonnenberger <joerg at britannica.bec.de> wrote:

> 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
> <dns-247da3.bc>