Which optimisations are are easier or perhaps only possible in the frontend ?

[Daniel Murphy via Digitalmars-d]

"Stefan Koch"  wrote in message news:smlizntnnsppmzsdceln at forum.dlang.org...

> I am sure that would be interesting. But I gather PR's for DMD are not 
> merged too frequently.

DMD is where the frontend's development takes place, and the frontend is 
shared with GDC and LDC.  I don't think they maintain significant frontend 
patches on top of DMD's frontend.