Integrating zld, a faster version of Apple LLVM linker

[kinke]

On Sunday, 6 June 2021 at 14:29:28 UTC, James Lu wrote:
> https://github.com/michaeleisel/zld#zld
>
> It suggests that zld is 40% faster.

For incremental debug builds apparently.

> Is it possible to integrate zld into LDC? What about DMD?

Should be as simple as `-linker=<path to zld>` with LDC, and 
`-Xcc=-fuse-ld=<path to zld>` with DMD.