[llvm] r243956 - [SDAG] Fix a result chain in ExpandUnalignedLoad

[Hans Wennborg via llvm-commits]

+Tom for 3.7.1

On Fri, Sep 4, 2015 at 8:12 AM, Hans Wennborg <hans at chromium.org> wrote:
> I've put this on my list for when Tom starts the 3.7.1 process.
>
> Thanks,
> Hans
>
> On Wed, Sep 2, 2015 at 6:18 PM, Quentin Colombet <qcolombet at apple.com> wrote:
>> This time with the right list in CC!
>>
>>> On Sep 2, 2015, at 6:17 PM, Quentin Colombet <qcolombet at apple.com> wrote:
>>>
>>> Hi Hans,
>>>
>>> Could we pull that on the release branch?
>>> That would fix PR24669.
>>> https://llvm.org/bugs/show_bug.cgi?id=24669
>>>
>>> Cheers,
>>> -Quentin
>>>> On Aug 3, 2015, at 11:29 PM, Hal Finkel <hfinkel at anl.gov> wrote:
>>>>
>>>> Author: hfinkel
>>>> Date: Tue Aug  4 01:29:12 2015
>>>> New Revision: 243956
>>>>
>>>> URL: http://llvm.org/viewvc/llvm-project?rev=243956&view=rev
>>>> Log:
>>>> [SDAG] Fix a result chain in ExpandUnalignedLoad
>>>>
>>>> On the code path in ExpandUnalignedLoad which expands an unaligned vector/fp
>>>> value in terms of a legal integer load of the same size, the ChainResult needs
>>>> to be the chain result of the integer load.
>>>>
>>>> No in-tree test case is currently available.
>>>>
>>>> Patch by Jan Hranac!
>>>>
>>>> Modified:
>>>>   llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
>>>>
>>>> Modified: llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
>>>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp?rev=243956&r1=243955&r2=243956&view=diff
>>>> ==============================================================================
>>>> --- llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp (original)
>>>> +++ llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp Tue Aug  4 01:29:12 2015
>>>> @@ -439,7 +439,7 @@ ExpandUnalignedLoad(LoadSDNode *LD, Sele
>>>>                             ISD::ANY_EXTEND, dl, VT, Result);
>>>>
>>>>      ValResult = Result;
>>>> -      ChainResult = Chain;
>>>> +      ChainResult = newLoad.getValue(1);
>>>>      return;
>>>>    }
>>>>
>>>>
>>>>
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>>>
>>