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authorEric Biggers <ebiggers@google.com>2018-07-24 18:29:07 -0700
committerHerbert Xu <herbert@gondor.apana.org.au>2018-08-03 18:06:05 +0800
commit4e34e51f48ab7f77a4022aa810a786daa3eb3e22 (patch)
treedde19d19ab296050fa3d7a2f362124bdbf7d04f5 /arch/arm/crypto/crct10dif-ce-core.S
parentf53ad3e1b35a558528f6d0041568016d1f623a9d (diff)
downloadlinux-4e34e51f48ab7f77a4022aa810a786daa3eb3e22.tar.gz
crypto: arm/chacha20 - always use vrev for 16-bit rotates
The 4-way ChaCha20 NEON code implements 16-bit rotates with vrev32.16,
but the one-way code (used on remainder blocks) implements it with
vshl + vsri, which is slower.  Switch the one-way code to vrev32.16 too.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/arm/crypto/crct10dif-ce-core.S')
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