[LLVMdev] Please benchmark new x86 vector shuffle lowering, planning to make it the default very soon!

[Andrea Di Biagio]

On Fri, Sep 19, 2014 at 9:39 PM, Chandler Carruth <chandlerc at google.com> wrote:
> FWIW, I agree with Quentin. I'm actually confident I have test cases
> covering all of these.

Ok then. In that case, I will keep investigating to see if I can find
something more.

Cheers,
Andrea

>
> On Fri, Sep 19, 2014 at 1:22 PM, Andrea Di Biagio
> <andrea.dibiagio at gmail.com> wrote:
>>
>> 3.  When zero extending 2 packed 32-bit integers, we should try to
>> emit a vpmovzxdq
>> Example:
>>   vmovq  20(%rbx), %xmm0
>>   vpshufd $80, %xmm0, %xmm0 # %xmm0 = %xmm0[0,0,1,1]
>>
>> Before:
>>    vpmovzxdq  20(%rbx), %xmm0
>
>
> This one is already fixed.