Commit be169fe3 authored by Uros Bizjak's avatar Uros Bizjak Committed by Herbert Xu
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crypto: x86/poly1305 - 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: default avatarUros 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: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 0b837f1e

arch/x86/crypto/poly1305-x86_64-cryptogams.pl

+1 −1
Original line number Diff line number Diff line
@@ -251,7 +251,7 @@ $code.=<<___; 
	mov	%rax,8($ctx)

	mov	%rax,16($ctx)



	cmp	\$0,$inp

	test	$inp,$inp

	je	.Lno_key

___

$code.=<<___ if (!$kernel);