Am 22.06.2013 15:53, schrieb jerro:
In its current state you don't want to be using SIMD with dmd because
the generated assembly will be significantly slower then if you just
use the default FPU math.
That may be true for some kinds of code, but it isn't true int general.
For example, see the comparison of pfft's performance when built with 64
bit DMD using SIMD and without SIMD:
http://i.imgur.com/kYYI9R9.png
This benchmark was run on a core i5 2500K on 64 bit Debian Wheezy.
Ok I saw that you did write quite a few cirtical functions in inline
assembly. Not really a good argument for dmds codegen with simd intrinsics.
Kind Regards
Benjamin Thaut
