Release D 2.075.0

[Vladimir Panteleev via Digitalmars-d-announce]

On Thursday, 20 July 2017 at 07:19:03 UTC, Patrick Schluter wrote:
> version 2.067 that still had the C++ frontend took more than 
> 100 seconds. I think if the backend is translated to D, 
> building the compiler will take not more than 2 seconds.
> To put it in perspective, building gcc with only C and C++ 
> support takes around 15 minutes on my machine and clang+llvm is 
> ridiculously slow to compile with not far from 1 hour 
> compilation.
> Ok, these projects are much, much bigger but that doesn't 
> change the fact that C++ is slow to compile.

One day, a colleague and I were working on migrating a large MSVC 
project to LLVM. Due to various reasons (using git master / 
bisecting regressions), this involved building LLVM from source 
code, which took an exorbitant amount of time (about 40 minutes 
IIRC).

Later that day, I mentioned in passing that we might make 
building D part of the build process (of a project using D code), 
since building the compiler took only 3 seconds on my machine.

To quote my colleague:

"Whaaaaaaaaaaat? How can a compiler compile in 3 seconds?!"