Performance issue with @fastmath and vectorization

[Johan Engelen via digitalmars-d-ldc]

On Saturday, 12 November 2016 at 10:56:20 UTC, deXtoRious wrote:
> On Saturday, 12 November 2016 at 10:47:42 UTC, Johan Engelen 
> wrote:
>>
>> Does the C++ need `__restrict__` for the parameters to get the 
>> assembly you want?
>
> In this case, it doesn't seem to make any difference.

That's good news, because there is currently no way to add that 
to LDC code, afaik.

Hope you can try to cut more of these things from the example so 
it's easier to figure out why things are different.  (e.g. is 
-Ofast needed, or is -O3 enough?)

Thanks!

cheers,
   Johan