!!!Please add intrinsics module for DMD DRuntime!!!

[Iain Buclaw via Digitalmars-d]

On 22 November 2016 at 18:07, Ilya Yaroshenko via Digitalmars-d
<digitalmars-d at puremagic.com> wrote:
> On Tuesday, 22 November 2016 at 16:52:40 UTC, Johan Engelen wrote:
>>
>> On Tuesday, 22 November 2016 at 16:36:13 UTC, Andrei Alexandrescu wrote:
>>>
>>> On 11/22/2016 11:28 AM, Ilya Yaroshenko wrote:
>>>>
>>>> They are always software
>>>> https://github.com/dlang/druntime/blob/master/src/core/bitop.d --Ilya
>>>
>>>
>>> The intent is to have the compiler detect the pattern and insert the
>>> code. dmd does that IIRC (why is asm.dlang.org not working again?) and so
>>> does gdc: https://godbolt.org/g/WspkIX.
>>
>>
>> LDC too. https://godbolt.org/g/S83b30
>> (note that cross-module inlining is off by default, something to work on
>> for 1.2.0!)
>
>
> No, LDC and GDC cannot detect it. Proof - https://godbolt.org/g/bsAFU8 .
> Current LDC DRuntime uses intrinsics instead of software implementation.
>
> Ilya

Fixed that for you.  Unfortunately it seems LDC just isn't clever enough.

https://godbolt.org/g/quBpEq

Iain