• Basile B. (2/2) Feb 25 2020 lzcnt and tznct are not recognized.
• kinke (7/9) Feb 25 2020 I guess you mean in DMD-style inline asm; that part doesn't see
• Basile B. (2/11) Feb 26 2020 indeed -mcpu solves the problem.

Basile B. <b2.temp gmx.com> writes:

lzcnt and tznct are not recognized.
DMD accept them.

kinke <noone nowhere.com> writes:

On Tuesday, 25 February 2020 at 21:18:48 UTC, Basile B. wrote:
 lzcnt and tznct are not recognized.
 DMD accept them.

I guess you mean in DMD-style inline asm; that part doesn't see 
much love. LDC-style __asm provides all of them, at least as long 
as using appropriate -mcpu/-mattr switches.

Looks like you're trying to manually optimize bsf/bsr; I'd advise 
against that, standard core.bitop generates exactly these 2 
instructions: https://d.godbolt.org/z/PG8GiU

Basile B. <b2.temp gmx.com> writes:

On Wednesday, 26 February 2020 at 03:07:22 UTC, kinke wrote:
 On Tuesday, 25 February 2020 at 21:18:48 UTC, Basile B. wrote:
 lzcnt and tznct are not recognized.
 DMD accept them.

 I guess you mean in DMD-style inline asm; that part doesn't see 
 much love. LDC-style __asm provides all of them, at least as 
 long as using appropriate -mcpu/-mattr switches.

 Looks like you're trying to manually optimize bsf/bsr; I'd 
 advise against that, standard core.bitop generates exactly 
 these 2 instructions: https://d.godbolt.org/z/PG8GiU

indeed -mcpu solves the problem.