dmd codegen improvements

[Joseph Rushton Wakeling via Digitalmars-d]

On 18/08/15 12:45, Walter Bright via Digitalmars-d wrote:
> Martin ran some benchmarks recently that showed that ddmd compiled with dmd was
> about 30% slower than when compiled with gdc/ldc. This seems to be fairly typical.
>
> I'm interested in ways to reduce that gap.

All things considered, looking at the issues involved in the transition, and the 
benefits of being able to refactor in D, I can't see that it makes sense to 
worry about such things at this stage.  Surely the easiest way to handle the 
speed gap, in the short term, is to make it easy to use gdc/ldc as the D 
compiler to build ddmd, and to do exactly that when building dmd binaries for 
distribution.

Admittedly my answer may be Linux-centric (I guess gdc/ldc builds of ddmd are 
not feasible for Windows), but to be honest, I don't think a 30% slowdown is 
_that_ terrible a thing to have to deal with, in the short term, to manage such 
an important transition.  Stability at this stage seems _much_ more important.