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(parent: f2d4576) | patch
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)
committerHerbert Xu <herbert@gondor.apana.org.au>
Fri, 4 Dec 2020 07:13:15 +0000 (18:13 +1100)
commit032d049ea0f45b45c21f3f02b542aa18bc6b6428
treee12fc9f43fc0a16f71ef34e0a0bdbdbd9c21d6ddtree | snapshot
parentf2d4576a9d38f0a35bc1a5436f5e6e15b6c46aa4commit | diff
crypto: aesni - Use TEST %reg,%reg instead of CMP $0,%reg

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>
arch/x86/crypto/aesni-intel_asm.S diff | blob | history
arch/x86/crypto/aesni-intel_avx-x86_64.S diff | blob | history
Domain: System / Kernel;