[PATCH][AVX512] More intrinsics not requiring new backend support

[Demikhovsky, Elena]

I'd prefer broadcast, it guarantees best solution. 

-  Elena	


-----Original Message-----
From: Adam Nemet [mailto:anemet at apple.com] 
Sent: Tuesday, July 29, 2014 19:57
To: Demikhovsky, Elena
Cc: cfe-commits at cs.uiuc.edu
Subject: Re: [PATCH][AVX512] More intrinsics not requiring new backend support


On Jul 29, 2014, at 6:35 AM, Demikhovsky, Elena <elena.demikhovsky at intel.com> wrote:

> Hi Adam,
> 
> 1)
> set1_pd, set1_ps, set1_epi64, set1_epi32 should be implemented as broadcast.
> 
> 2)
> I don't understand in "casts".

Hi Elena,

I should have mentioned in the log that both set1 and the casts are widened versions of their counterparts in AVX (see avxintrin.h).

In particular for set1 and any other op that can be implemented without machine intrinsics, that is usually the preferred way (see r22c5bf6 in clang for an example).  This allows them to be recognized and optimized by the machine-independent optimization passes.  

> 3)
> __builtin_ia32_knothi receives unsigned short It should look like
> 
>   BUILTIN(__builtin_ia32_knothi, "Us", "")  instead of
> +BUILTIN(__builtin_ia32_knothi, "ss", "")

Good catch, thanks.  I will change this to UsUs.

Please let me know if you're OK with the patches after this fix and with the additional comment above.

Thanks,
Adam

> 
> -  Elena
> 
> 
> -----Original Message-----
> From: Adam Nemet [mailto:anemet at apple.com]
> Sent: Tuesday, July 29, 2014 10:11
> To: Demikhovsky, Elena
> Cc: cfe-commits at cs.uiuc.edu
> Subject: [PATCH][AVX512] More intrinsics not requiring new backend 
> support
> 
> Hi Elena,
> 
> Please let me know if these look good to you.
> 
> Thanks,
> Adam
> 
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