crypto: aesni - Use TEST %reg,%reg instead of CMP $0,%reg
authorUros Bizjak <ubizjak@gmail.com>
Fri, 27 Nov 2020 09:44:52 +0000 (10:44 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 20 Mar 2021 09:43:43 +0000 (10:43 +0100)
commitfcfab1a9aa40bda4bb401a58946e30bb77a6c371
treec21fb5680ab8a51934e337db796cf4715a6fd21c
parent05d125f7524e9ad200375c52799575184755d340
crypto: aesni - Use TEST %reg,%reg instead of CMP $0,%reg

[ Upstream commit 032d049ea0f45b45c21f3f02b542aa18bc6b6428 ]

CMP $0,%reg can't set overflow flag, so we can use shorter TEST %reg,%reg
instruction when only zero and sign flags are checked (E,L,LE,G,GE conditions).

Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
arch/x86/crypto/aesni-intel_asm.S
arch/x86/crypto/aesni-intel_avx-x86_64.S