• Jeff (12/12) May 15 2018 Hello,
• kinke (13/25) May 15 2018 Hi, you'll want to have a look at LDC's
• Kagamin (3/4) May 16 2018 If it zero extends 64-bit integer to 128-bit integer, it's done
• kinke (3/7) May 16 2018 That's enough indeed: https://run.dlang.io/is/1wJ7mA
• Jeff (3/12) May 16 2018 Thanks, it works perfectly ! Also I discover run.dlang.io, nice
• Johan Engelen (4/6) May 16 2018 You might like https://d.godbolt.org better if you don't need to
• Guillaume Piolat (4/16) May 23 2018 I've started doing such a translation as a library here:

Jeff <jromang protonmail.com> writes:

Hello,
I'm a beginner in D (I come from C++/Python), but I'm having 
great fun learning the language reading Ali's book. I'm using LDC 
as compiler, and I would like to use intrinsics, but I have 
difficulties to find the Intel intrinsics equivalent. Here are 
the functions I'm looking for :

_mm_cvtsi64x_si128
_mm256_sll_epi64
_mm256_movemask_epi8

Is there a way to call them ? Is there an Intel intrinsics to LDC 
intrinsics guide somewhere ?
Thanks for your help !

kinke <noone nowhere.com> writes:

On Tuesday, 15 May 2018 at 17:21:49 UTC, Jeff wrote:
 Hello,
 I'm a beginner in D (I come from C++/Python), but I'm having 
 great fun learning the language reading Ali's book. I'm using 
 LDC as compiler, and I would like to use intrinsics, but I have 
 difficulties to find the Intel intrinsics equivalent. Here are 
 the functions I'm looking for :

 _mm_cvtsi64x_si128
 _mm256_sll_epi64
 _mm256_movemask_epi8

 Is there a way to call them ? Is there an Intel intrinsics to 
 LDC intrinsics guide somewhere ?
 Thanks for your help !

Hi, you'll want to have a look at LDC's 
`import/ldc/gccbuiltins_x86.di` file (auto-generated from 
corresponding LLVM x86 intrinsics). Make sure to enable extended 
instruction sets via something like `-mattr=+avx2` (or simply 
`-mcpu=native`).

_mm256_movemask_epi8 => __builtin_ia32_pmovmskb256
_mm256_sll_epi64     => __builtin_ia32_psllqi256

I didn't find the corresponding declaration for 
_mm_cvtsi64x_si128 (__builtin_ia32_vzeroupper strangely takes no 
args). You can always resort to LLVM assembly though (grep for 
`__asm` in import directory to see some examples in 
druntime/Phobos).

Kagamin <spam here.lot> writes:

On Tuesday, 15 May 2018 at 17:21:49 UTC, Jeff wrote:
 _mm_cvtsi64x_si128

If it zero extends 64-bit integer to 128-bit integer, it's done 
by movq instruction. I suppose simple assignment should do it.

kinke <kinke libero.it> writes:

On Wednesday, 16 May 2018 at 10:36:01 UTC, Kagamin wrote:
 On Tuesday, 15 May 2018 at 17:21:49 UTC, Jeff wrote:
 _mm_cvtsi64x_si128

 If it zero extends 64-bit integer to 128-bit integer, it's done 
 by movq instruction. I suppose simple assignment should do it.

That's enough indeed: https://run.dlang.io/is/1wJ7mA
[And vzeroupper is unrelated, and no args are correct.]

Jeff <jromang protonmail.com> writes:

On Wednesday, 16 May 2018 at 13:11:46 UTC, kinke wrote:
 On Wednesday, 16 May 2018 at 10:36:01 UTC, Kagamin wrote:
 On Tuesday, 15 May 2018 at 17:21:49 UTC, Jeff wrote:
 _mm_cvtsi64x_si128

 If it zero extends 64-bit integer to 128-bit integer, it's 
 done by movq instruction. I suppose simple assignment should 
 do it.

 That's enough indeed: https://run.dlang.io/is/1wJ7mA
 [And vzeroupper is unrelated, and no args are correct.]

Thanks, it works perfectly ! Also I discover run.dlang.io, nice 
to quickly check the ASM output :)

Johan Engelen <j j.nl> writes:

On Wednesday, 16 May 2018 at 19:34:32 UTC, Jeff wrote:
  Also I discover run.dlang.io, nice to quickly check the ASM 
 output :)

You might like https://d.godbolt.org better if you don't need to 
execute the code.

-Johan

Guillaume Piolat <first.last gmail.com> writes:

On Tuesday, 15 May 2018 at 17:21:49 UTC, Jeff wrote:
 Hello,
 I'm a beginner in D (I come from C++/Python), but I'm having 
 great fun learning the language reading Ali's book. I'm using 
 LDC as compiler, and I would like to use intrinsics, but I have 
 difficulties to find the Intel intrinsics equivalent. Here are 
 the functions I'm looking for :

 _mm_cvtsi64x_si128
 _mm256_sll_epi64
 _mm256_movemask_epi8

 Is there a way to call them ? Is there an Intel intrinsics to 
 LDC intrinsics guide somewhere ?
 Thanks for your help !

I've started doing such a translation as a library here: 
http://code.dlang.org/packages/intel-intrinsics

However, no AVX yet