Here is a v14 of the patch that I think is beginning to approach something
committable. Besides general review and testing, there are two things that
I'd like to bring up:
* The latest patch set from Paul Amonson appeared to support MSVC in the
meson build, but not the autoconf one. I don't have much expertise here,
so the v14 patch doesn't have any autoconf/meson support for MSVC, which
I thought might be okay for now. IIUC we assume that 64-bit/MSVC builds
can always compile the x86_64 popcount code, but I don't know whether
that's safe for AVX512.
* I think we need to verify there isn't a huge performance regression for
smaller arrays. IIUC those will still require an AVX512 instruction or
two as well as a function call, which might add some noticeable overhead.
--
Nathan Bossart
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