Proposed improvements to the separate compilation model

[Vladimir Panteleev]

On Sat, 23 Jul 2011 21:53:30 +0300, Andrej Mitrovic  
<andrej.mitrovich at gmail.com> wrote:

> Isn't the biggest issue of large D projects the problems with
> incremental compilation (e.g.
> https://bitbucket.org/h3r3tic/xfbuild/issue/7/make-incremental-building-reliable),
> optlink, and the toolchain?

Yes. This is a difficult problem.

Due to how DMD is designed, incremental compilation is only reliable when  
compiling one module at a time. Normally, this would require DMD to parse  
all imports recursively, for every invocation (thus, for every module).  
.di files should greatly speed up parsing (and thus, assuming that is the  
major bottleneck, make one-module-at-a-time compilation faster).

-- 
Best regards,
  Vladimir                            mailto:vladimir at thecybershadow.net