4 ms·
That sounds like a decent primitive to accelerate arbitrary bit permutations in software. It's known as GRP in, e.g., [1]. [1] http://palms.ee.princeton.edu/PA
by pbsd 5y ago
That sounds like a decent primitive to accelerate arbitrary bit permutations in software. It's known as GRP in, e.g., [1].
[1] http://palms.ee.princeton.edu/PALMSopen/shi00bit.pdf http://palms.ee.princeton.edu/PALMSopen/shi00bit.pdf
- notacoward 5y agoVery interesting. This was published in 2000, and the people we worked with were near Princeton, so this result - the specific utility of such an instruction, if not the semantics themselves - might very well be something that was known to some relevant people but not yet widely enough for any of our people to recognize it. Thanks!