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A comment on BLAKE3 1.0. Parent comment

Re:BLAKE3 1.0 by api on Monday July 26, 2021 @11:16AM (#27960443)
Given that all these are ARX cores, I wonder if a fused ARX instruction could cover a wide range of them?
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Re:BLAKE3 1.0 by brandmeyer on Monday July 26, 2021 @07:56PM (#27967005)
ARMv8.2 has rotate-and-xor and xor-and-rotate so that the (extremely cheap) xor can be saved.
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Re:BLAKE3 1.0 by SAI_Peregrinus on Monday July 26, 2021 @11:28AM (#27960635)
Probably. With a barrel shifter easily. Barrel shifters are a bit slower than wired shifts though, so for ultimate speed you'd end up with hardware shift amounts.
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Re:BLAKE3 1.0 by api on Monday July 26, 2021 @11:34AM (#27960710)
The advantage would be a single instruction that implemented the core of a wide range of things including BLAKE2, BLAKE3, Salsa, ChaCha, Speck, and more.
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