Link time optimization in D

[Michiel Helvensteijn]

Adam Ruppe wrote:

>> You save time by recompiling only files that have changes.
> 
> But, then the whole program goes through the process again anyway to
> perform the optimization. You save a little time in skipping parts of
> the front end for unchanged file, but the whole backend process has to
> happen anyway.

That `backend' process is not the compilation process all over again. It's
not even the optimizer phase all over again. It's just the extra
optimizations that could not be performed on a file-by-file basis.

Or at least it should be.

-- 
Michiel Helvensteijn