Implementing C23 _Float16 in ImportC

[Richard (Rikki) Andrew Cattermole]

On 15/01/2025 4:06 AM, Bruce Carneal wrote:
> On Tuesday, 14 January 2025 at 14:34:13 UTC, Richard (Rikki) Andrew 
> Cattermole wrote:
>> ...
>>
>> A new policy, that anyone could implement a C numeric type as long as 
>> it bound to a druntime module, and not exposed to D. D would need a 
>> DIP due to the identifier needing confirmation.
>>
>>
> 
> Is this a good path to full integration with the back ends?  I'd love to 
> see auto vectorization and other optimizations when using the new types.

Yes.

The functions involved can be recognized as intrinsics, and swapped out 
for the IR version of it.