dmd codegen improvements

[via Digitalmars-d]

On Thursday, 27 August 2015 at 17:59:48 UTC, Jonathan M Davis 
wrote:
> that's a big win. Every little bit of performance improvement 
> that we can get out of dmd is an improvement, especially when 
> those improvements come at minimal cost, and I see no reason to 
> not improve dmd's performance where it's not going to be a huge 
> timesink to do so and where the appropriate precautions are 
> taken to avoid regressions.

Actually, if you think about PR, it does not matter. I might even 
be better to perform 50% worse and call it a development-mode 
than to perform 25% worse in release mode...

How about putting effort into making it easier to hook multiple 
backends into the same binary instead? People won't complain if 
they can toss in "-O" and get LLVM backend output from the same 
compiler.