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

[Quentin Colombet]

Thanks again Joerg.
The fix is r217800.

-Quentin
On Sep 15, 2014, at 9:34 AM, Quentin Colombet <qcolombet at apple.com> wrote:

> 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>
> 
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