summing large arrays - or - performance of tight loops

[Dave]

Craig Black wrote:
> Good work on this.  It is certainly a problem for Walter if he sticks with 
> his "trust the compiler" philiosphy.  Since the DMD documentation claims 

Walter consistently mentioned that a) most of the DM compiler back-end is 20 years old and b) is not 
optimized for D yet. I think the "trust the compiler" philosophy is for stability (20 years old), 
not optimizations. Plus for integer stuff it seems to do pretty well (GCC is no slouch).

That said, both foreach and FP should perform better!

> that foreach should emit optimized code, and it clearly doesn't in these 
> cases, I think you could submit this as a bug.
> 
> -Craig 
>