[LLVMdev] [RFC][PATCH] Adding absd/hadd/sad intrinsics

Nicholas Chapman admin at indigorenderer.com
Wed May 6 05:20:42 PDT 2015


Hi,
There is a related issue with horizontal max (and min), please see 
https://llvm.org/bugs/show_bug.cgi?id=23116
Thanks,
     Nick C

On 06/05/2015 12:55, Renato Golin wrote:
> On 6 May 2015 at 11:21, Shahid, Asghar-ahmad
> <Asghar-ahmad.Shahid at amd.com> wrote:
>> Sorry that I could not get what exactly you mean with "heuristics".
>> Is it the "intrinsics approach" itself or something else?
> No, that was about the cost tables.
>
>
>> BTW, now my plan is to just add the two intrinsics for 'absolute difference'
>> and 'horizontal add'.
> That's ok, as long as they're impossible to represent in plain IR.
>
> cheers,
> --renato
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