Compile without generating code

[Lewis via Digitalmars-d]

I was reading 
https://blog.rust-lang.org/2017/07/05/Rust-Roadmap-Update.html, 
which mentioned that the Rust compiler now has a mode to go 
through the motions of compiling and show errors, but without 
generating any code. This way you can do a much faster build 
while iterating until you have no compile errors, then do a 
single build with code generation once everything looks good.

I was wondering what people's thoughts on this was. I haven't 
gone digging through DMD's codebase recently. Is DMD set up in 
such a way that this would be feasible to implement? Does this 
even make sense with the way DMD generates code, or would it only 
work for a language like Rust that does a ton of compile-time 
checking?

DMD already compiles pretty fast, and this strikes me as a useful 
feature to further cement D's competitive edge with respect to 
compilation speed.