From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756050Ab2GESoD (ORCPT ); Thu, 5 Jul 2012 14:44:03 -0400 Received: from moutng.kundenserver.de ([212.227.126.171]:64582 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753986Ab2GESoA (ORCPT ); Thu, 5 Jul 2012 14:44:00 -0400 Date: Thu, 5 Jul 2012 20:43:58 +0200 From: Johannes Goetzfried To: Herbert Xu Cc: linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org Subject: [PATCH] crypto: twofish-avx - remove useless instruction Message-ID: <20120705184358.GE2091@kronos.redsun> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.20 (2009-06-14) X-Provags-ID: V02:K0:hFhhfbld1dFuIxEt2YJp0lvqch1P5LybvQ27oSBfBWo SgvsrO5hWWWXCiFGqvd7aaOk9no84SpC3I1XRJBklT/P1aG5By STyx9p59vcvkMmDl4SfPpK1ejVzq/OwHQFHIrYuQYPD4+5gUIY CHmmM5ZOnlXxxH8B4g2pAvcJqS3lreNDbYny48z6S+0gNCkpQk cODczI84kb6DNenUgDaAK2FQf8Rsqvodd1P3lf5H5sZXGfYI0U 1Nw9FmY0fr/EqH5/89c57NqX/onj3UBYZO7nA/Y17m172u7aB8 TMHPjJpuXJrWmqccR+fuyuFOWb+R+s7yFUwvPHao/91NPjtubi vWU2Yek1bR+VmGW/vxxU= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The register %rdx is written, but never read till the end of the encryption routine. Therefore let's delete the useless instruction. Signed-off-by: Johannes Goetzfried --- arch/x86/crypto/twofish-avx-x86_64-asm_64.S | 1 - 1 files changed, 0 insertions(+), 1 deletions(-) diff --git a/arch/x86/crypto/twofish-avx-x86_64-asm_64.S b/arch/x86/crypto/twofish-avx-x86_64-asm_64.S index fc31b89..35f4557 100644 --- a/arch/x86/crypto/twofish-avx-x86_64-asm_64.S +++ b/arch/x86/crypto/twofish-avx-x86_64-asm_64.S @@ -243,7 +243,6 @@ __twofish_enc_blk_8way: popq %rbx; leaq (4*4*4)(%rsi), %rax; - leaq (4*4*4)(%rax), %rdx; testb %cl, %cl; jnz __enc_xor8; -- 1.7.2.5