Simd instructions

[Kai Nacke]

On Thursday, 18 July 2013 at 21:30:12 UTC, bearophile wrote:
> jerro:
>
>> Try adding flag -mattr=sse3.
>
> Now it's accepted, thank you. So is LDC2 assuming a very old 
> CPU? :-)
>
> Bye,
> bearophile

Hi,

the behaviour was changed because you can't create a generic 
package if you optimize for your CPU.

But the change created other problems, see issue #414 
(https://github.com/ldc-developers/ldc/issues/414).

With LLVM 3.3, the auto vectorizer is not enabled. You have to 
specify -vectorize on the command line. Maybe you want to try 
that with your original code.

Kai