[llvm-dev] extract_vector_elt type mismatch?

[Xiaochu Liu via llvm-dev]

Thanks all!
vector_extract does the job for me.

On Aug 18, 2016 11:06 AM, "Matt Arsenault" <Matthew.Arsenault at amd.com>
wrote:

> On 08/18/2016 11:01 AM, Tim Northover wrote:
>
>> On 18 August 2016 at 10:46, Matt Arsenault via llvm-dev
>> <llvm-dev at lists.llvm.org> wrote:
>>
>>> I think this is just intended as a quirk for some weird targets that
>>> have a
>>> legal vector type, but the scalar type itself is not legal, so it
>>> requires
>>> an implicit extension when extracting it.
>>>
>> I think it's a pretty common RISC situation. I notice you deprecated
>> the mismatching types in r255359, but I don't really see an
>> alternative after type-legalization with the current nodes. I suppose
>> we could add ISD::EXTRACT_SEXT_VECTOR_ELEMENT and
>> ISD::EXTRACT_ZEXT_VECTOR_ELEMENT or something.
>>
>> Tim.
>>
>
> I think that would be an improvement. I manage to break the mismatched
> element case for most every vector combine I've done
>
> -Matt
>
>
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