dmd codegen improvements

[Adam D. Ruppe via Digitalmars-d]

On Saturday, 29 August 2015 at 13:06:58 UTC, David Nadlinger 
wrote:
> But the fact is that many people are not. Even the core 
> language team, who doesn't want their compiler to get 30% 
> slower on the next release.

That's why your work on ldc and Iain's on gdc matters!

I don't object to work on dmd's optimizations, but I'm ok with 
them staying the way they are too since ldc and gdc are fairly 
easy to use now.