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(parent: 032d049) | patch
crypto: x86/sha512 - Use TEST %reg,%reg instead of CMP $0,%reg
authorUros Bizjak <ubizjak@gmail.com>
Fri, 27 Nov 2020 09:59:43 +0000 (10:59 +0100)
committerHerbert Xu <herbert@gondor.apana.org.au>
Fri, 4 Dec 2020 07:13:15 +0000 (18:13 +1100)
commit0b837f1ef8822a8df880ffba6778ba42f707b83d
tree9beacab75a609c0e294fe52bd5d3a822f1c4d121tree | snapshot
parent032d049ea0f45b45c21f3f02b542aa18bc6b6428commit | diff
crypto: x86/sha512 - 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/sha512-avx-asm.S diff | blob | history
arch/x86/crypto/sha512-ssse3-asm.S diff | blob | history
Domain: System / Kernel;