core.atomic for ldc.

[Basile B.]

On Monday, 1 February 2021 at 06:12:59 UTC, vitamin wrote:
> On Monday, 1 February 2021 at 05:23:52 UTC, rikki cattermole 
> wrote:
>> The only difference between dmd, ldc and gdc (in effect) is 
>> the backend.
>> While druntime and Phobos will be patched for other platform 
>> targets, over all its the same library.
>>
>> The same goes for core.atomic. You should not need to know 
>> that it has been patched. If you can call it and it gives you 
>> the right results, you can assume it worked.
>>
>> Oh and $ dub build --compiler=ldc2
>
> problem is when I build with ldc then id doesn't work and with 
> dmd it does:
>
> try compile this with ldc:
> https://run.dlang.io/is/gngLFu
>
> error on webite run.dlang.io is same as I have.

LDC has all LLVM intrinsics so try

---
import ldc.intrinsics;
ldc.intrinsics.llvm_atomic_rmw_add(...);
---