[PD] gain~

Krzysztof Czaja czaja at chopin.edu.pl
Thu Apr 21 20:52:01 CEST 2005

Tim Blechmann wrote:
>>oh i have forgotten to mention that zexy's [matrix~] and [multiline~] 
>>were written for exactly this purpose... (although not SIMD-optimized)
> and if i remember correctly they are not even loop unrolled / vectorized
> ... haven't checked the code, though ...

neither is sickle version of matrix~, nor any other sickle clone.
When I was experimenting back then with gcc-2.95, the consistent
pattern was that -funroll-loops performed slightly better than
unrolling by hand.

Wonder about similar measurements with -ftree-vectorize once it


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