• Igor Shirkalin (7/7) Jan 21 2018 Hello,
• Johan Engelen (10/17) Jan 21 2018 You can use mir.cpuid:
• Igor Shirkalin (5/23) Jan 21 2018 Johan, thanks for mir.cpuid direction.
• David Nadlinger (6/8) Jan 25 2018 Yes, please do! (We should make sure things are somewhat nicely

Igor Shirkalin <mathsoft inbox.ru> writes:

Hello,

we use LDC to dynamically select compiled and optimized code with 
particular instructions set with help of  target pragma. To make 
this we take core.cpu module, but it can't detect avx512 
instructions presence. Does LDC have its own some cpu instruction 
detection runtime routine(s) to make use of avx512-set?

Igor

Johan Engelen <j j.nl> writes:

On Sunday, 21 January 2018 at 12:52:41 UTC, Igor Shirkalin wrote:
 Hello,

 we use LDC to dynamically select compiled and optimized code 
 with particular instructions set with help of  target pragma. 
 To make this we take core.cpu module, but it can't detect 
 avx512 instructions presence. Does LDC have its own some cpu 
 instruction detection runtime routine(s) to make use of 
 avx512-set?

You can use mir.cpuid:
https://code.dlang.org/packages/mir-cpuid
https://github.com/libmir/mir-cpuid

( It would be great if you could write an article about how you 
use dynamic selection and  target. It will be very helpful for 
other D programmers. Contact Mike Parker if you want to write 
something for the D blog, where he can help writing. 
https://github.com/mdparker . Thanks! )

-Johan

Igor Shirkalin <mathsoft inbox.ru> writes:

On Sunday, 21 January 2018 at 13:09:29 UTC, Johan Engelen wrote:
 On Sunday, 21 January 2018 at 12:52:41 UTC, Igor Shirkalin 
 wrote:
 Hello,

 we use LDC to dynamically select compiled and optimized code 
 with particular instructions set with help of  target pragma. 
 To make this we take core.cpu module, but it can't detect 
 avx512 instructions presence. Does LDC have its own some cpu 
 instruction detection runtime routine(s) to make use of 
 avx512-set?

 You can use mir.cpuid:
 https://code.dlang.org/packages/mir-cpuid
 https://github.com/libmir/mir-cpuid

 ( It would be great if you could write an article about how you 
 use dynamic selection and  target. It will be very helpful for 
 other D programmers. Contact Mike Parker if you want to write 
 something for the D blog, where he can help writing. 
 https://github.com/mdparker . Thanks! )

Johan, thanks for mir.cpuid direction.
I'll call for Mike's help about an article if it is really 
interesting and useful/helpful for D programmers.

Igor

David Nadlinger <code klickverbot.at> writes:

On Sunday, 21 January 2018 at 17:15:38 UTC, Igor Shirkalin wrote:
 I'll call for Mike's help about an article if it is really 
 interesting and useful/helpful for D programmers.

Yes, please do! (We should make sure things are somewhat nicely 
cleaned up on the LDC side of things first, of course, but with 
your recent set of changes, this seems to be the case already 
anyway.)

  – David