From: Ulrich Drepper <drepper@redhat.com>
Date: Fri, 27 Aug 2010 05:12:16 +0000 (-0700)
Subject: Shorten x86-64 strlen a bit.
X-Git-Tag: glibc-2.13~134
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=107b2fa56c15572ae56fb4ed18b50b58aff39b7f;p=thirdparty%2Fglibc.git

Shorten x86-64 strlen a bit.
---

diff --git a/sysdeps/x86_64/strlen.S b/sysdeps/x86_64/strlen.S
index 7880c1d5e51..ee943775e66 100644
--- a/sysdeps/x86_64/strlen.S
+++ b/sysdeps/x86_64/strlen.S
@@ -1,7 +1,6 @@
 /* strlen(str) -- determine the length of the string STR.
    Copyright (C) 2009, 2010 Free Software Foundation, Inc.
    Contributed by Ulrich Drepper <drepper@redhat.com>.
-   Modified by Intel Corporation.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -85,22 +84,19 @@ L(exit_less16):
 L(exit16):
 	sub	%rdi, %rax
 	bsf	%rdx, %rdx
-	add	%rdx, %rax
-	add	$16, %rax
+	lea	16(%rdx), %rax
 	ret
 	.p2align 4
 L(exit32):
 	sub	%rdi, %rax
 	bsf	%rdx, %rdx
-	add	%rdx, %rax
-	add	$32, %rax
+	lea	32(%rdx), %rax
 	ret
 	.p2align 4
 L(exit48):
 	sub	%rdi, %rax
 	bsf	%rdx, %rdx
-	add	%rdx, %rax
-	add	$48, %rax
+	lea	48(%rdx), %rax
 	ret
 END(strlen)
 libc_hidden_builtin_def (strlen)