Reduce has dreadful performance?

[weaselcat via Digitalmars-d]

On Saturday, 20 June 2015 at 05:55:07 UTC, Russel Winder wrote:
> On Thu, 2015-06-18 at 15:54 -0700, Andrei Alexandrescu via 
> Digitalmars-d wrote:
>> […]
>> 
>> Russel, do you have numbers for ldc by any chance? Thx! -- 
>> Andrei
>
> Single data point only, and I need to check this, but:
>
> Loop: 1.44s
> Reduce 1: 1.43s
> Reduce 2: 1.42s
>
> LDC seems to beat DMD into the ground.
>
> But then I think we all know this ;-)
>
> The PyD setuptools support appears to not properly ser RPATH 
> which is a bit annoying. Actually it is a lot annoying.

Interesting, I saw a bigger speedup from the ranges.
Do you use windows? What LLVM/LDC version? flags?