popcnt intrinsic unused

[Stefan Koch via digitalmars-d-ldc]

On Thursday, 21 January 2016 at 09:03:54 UTC, Kagamin wrote:
> On Wednesday, 20 January 2016 at 17:35:02 UTC, Stefan Koch 
> wrote:
>> Because the runtime is not visible as source-code.
>> If it were, llvm could make this into the popcnt instruction.
>> But the inliner is blind when it calls a library...
>
> If a function has pragma(inline) and inliner doesn't inline it, 
> then the pragma is not implemented. And how dmd does it if the 
> function source is not visible?

dmd does not. if you use the runtime function popcnt...
it does use the intrinsic if you use the intrinsic _popcnt