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(parent: db71953) | patch
crypto: poly1305-x86_64 - Use XORL r32,32
authorUros Bizjak <ubizjak@gmail.com>
Thu, 27 Aug 2020 17:38:31 +0000 (19:38 +0200)
committerHerbert Xu <herbert@gondor.apana.org.au>
Fri, 11 Sep 2020 04:39:13 +0000 (14:39 +1000)
commit7dfd1e01b3dfc13431b1b25720cf2692a7e111ef
treef2ea7954fc9e206333acb397e873311924e8948dtree | snapshot
parentdb719539fd3889836900bf912755aa30a5985e9acommit | diff
crypto: poly1305-x86_64 - Use XORL r32,32

x86_64 zero extends 32bit operations, so for 64bit operands,
XORL r32,r32 is functionally equal to XORQ r64,r64, but avoids
a REX prefix byte when legacy registers are used.

Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Acked-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
arch/x86/crypto/poly1305-x86_64-cryptogams.pl diff | blob | history
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