[Libre-soc-bugs] [Bug 230] Video opcode development and discussion

bugzilla-daemon at libre-soc.org bugzilla-daemon at libre-soc.org
Mon Dec 14 17:27:31 GMT 2020


https://bugs.libre-soc.org/show_bug.cgi?id=230

--- Comment #40 from cand at gmx.com ---
I remembered where IBM's example is probably from, databases. There you could
find a stream of 7-bit ints. VSX would need adjusting between every 128-bit
block, less often than our setup, but the three vector-variable-shift instrs
there have a dependency on each other. Our unpack phase can go in parallel. So
we won't lose in speed per clock too much, even if databases aren't a major
usage point for libresoc.

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