Walter's talk on D backend

[max haughton]

On Wednesday, 18 September 2024 at 12:34:29 UTC, Dibyendu 
Majumdar wrote:
> Hi,
>
> I watched the talk on D backend; I thought it could have been 
> very interesting but actually was very scant in details.
>
> Two questions:
>
> Just because expressions are in a tree, how does it make the 
> backend SSA? It wasn't clear if the D backend uses virtual 
> registers, and if these can be assigned only once. If that is 
> the case then are their Phi instructions?
>
> The register allocator description also did not really explain 
> how it works. There was mention of coloring - was that a 
> reference to graph coloring?
>
> It seems that there is a lot of potential for Walter to do deep 
> dive video recordings on the backend, where each topic is fully 
> explored / explained.

I have wondered about the register allocator before too. I didn't 
get much of an intuition from reading the code but quite possible 
I missed something.