[LLVMdev] Gather load in LLVM IR

[Evan Cheng]

On Jan 14, 2014, at 11:11 AM, Nicholas Chapman <admin at indigorenderer.com> wrote:

> Hi All,
> I was in the process of implementing a gathering load for my language.  I got the getelementptr vector form working.  However there doesn't seem to be a way to load a vector of values using the vector of pointers from getelementptr.  Am I correct that this is not possible with LLVM IR currently (apart from with the avx2 gather intrinsic)?

I believe you are correct. This is not currently possible.

> 
> And if so, are there plans to allow loading of a vector of values?
> 
> I think extending the load instruction to take a vector of pointers (as would be produced by getelementptr) would work well.

This is of interests to a lot of people and I think it's a reasonable time to start the discussion. Do you have any concrete proposal in mind?

Evan

> 
> Thanks,
>    Nick C.
> 
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