[Mono-dev] Enabling Support for SIMD Intrinsics

[Rodrigo Kumpera]

Yes, mono 2.2 and 2.4 will only feature simd support for x86 32 bits.

2009/1/22 Justin Holewinski <shawmishrak at gmail.com>

> Is there a special configure script option to enable the SIMD intrinsic
> optimizations?
>
> I just compiled Mono from the 2.2 sources and compiled/executed the
> following C# code snippet:
>
> Console.WriteLine("SIMD Mode:  {0}", SimdRuntime.AccelMode.ToString());
>
> This is printing out  "SIMD Mode:  None" regardless of the -O option to
> mono.  I have tried -O=simd and -O=all.
>
> I also tried the SIMD examples available at
> http://tirania.org/blog/archive/2008/Nov-03.html (linked from Mono 2.2
> Release Notes) and noticed no difference between the -O=simd and -O=-simd
> comparisons, and both were significantly slower than the C version.  This
> leads me to believe the code snippet above is not just lying to me.
>
> This is on Fedora 9 x86_64 with an Intel Core i7 920 processor  (definitely
> has SSE support!).  Is SIMD support only available on x86 (32-bit)?
>
>
> Thanks,
>
> Justin Holewinski
>
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