Displaying 2 results from an estimated 2 matches for "vrsqrte".
2016 Sep 08
2
Pattern transformation between scalar and vector on IR.
Hi All,
I'm tring to use RSQRT instructions on follow case for ARM
(now what using is sqrt):
1.0 / sqrt(x)
The RSQRT instructions(VRSQRTE/VRSQRTS) are vector type,
but above operation is scalar type. So a transformation must be
done(transform sqrt pattern to rsqrt).
I have completed a patch for this, but I made the transformation in the
backend which will leads to additional latencies.And actually it's not
reasonable doing trans...
2000 Nov 15
8
Optimisations
Looking through the archives I have seen talk of making CPU specific
optimisations for Vorbis, a la MMX/3DNow!/SSE. The feeling I gather is to
wait until something is working well in C before committing to any kind of
specific optimisation. What if oft used and needed DSP functions were
identified and standardised DSP functionality be written for Vorbis? This
would seperate the basically