tree a7c1fb6d047c75170ddadd0dffe40055167e9c02
parent 604880107010a1e5794552d184cd5471ea31b973
author Jussi Kivilinna <jussi.kivilinna@iki.fi> 1365850010 +0300
committer Herbert Xu <herbert@gondor.apana.org.au> 1366895345 +0800

crypto: twofish - add AVX2/x86_64 assembler implementation of twofish cipher

Patch adds AVX2/x86-64 implementation of Twofish cipher, requiring 16 parallel
blocks for input (256 bytes). Table look-ups are performed using vpgatherdd
instruction directly from vector registers and thus should be faster than
earlier implementations. Implementation also uses 256-bit wide YMM registers,
which should give additional speed up compared to the AVX implementation.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>