FFmpeg/libavcodec
Rémi Denis-Courmont 61e5ca4ded lavc/bswapdsp: purge RISC-V V bswap32
This cannot beat the Zbb implementation, and it is unlikely that a real
meaningful CPU design would support V and not Zbb. The best loop rewrite
that I could come up with (4 shifts, 2 ands, 3 ors) is still ~40% slower
than Zbb.

A proper faster vector implementation should be feasible with the
cryptographic vector extensions, but that is a story for another time.
2023-07-19 19:29:35 +03:00
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