pure-ifying my code

[qznc]

On Monday, 18 November 2013 at 07:37:27 UTC, Jonathan M Davis 
wrote:
>> This is middleend optimization stuff, though.
>
> I'm not quite sure what you mean by this. There is no 
> middle-end. We have the
> front-end, which is shared by dmd, gdc, and ldc, and then each 
> compiler has
> its own backend. Anything D-specific is done in the front-end. 
> So, if there are
> any D-specific optimizations (such as optimizations related to 
> pure), they need
> to be in the front-end.

For me, middle-end is stuff, which is neither specific to input 
language nor to output OS/architecture/runtime. Effectively, all 
compiler optimizations which are useful everywhere. Maybe this 
view is a little outdated, since most people consider LLVM has 
simply a backend, while I would consider it middle- and backend 
of a compiler.