From: Ulrich Drepper <drepper@redhat.com>
Date: Thu, 4 Jun 2009 17:54:29 +0000 (-0700)
Subject: Tiny strlen for x86-64 optimization.
X-Git-Tag: fedora/glibc-2.10.90-1~8^2~10
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=747785f2b3afbc8b900083988957bff11bb6b11f;p=thirdparty%2Fglibc.git

Tiny strlen for x86-64 optimization.

I didn't remove an instruction from a previous version in the final
version.
---

diff --git a/ChangeLog b/ChangeLog
index 72910ce6109..cb094d18632 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2009-06-04  Ulrich Drepper  <drepper@redhat.com>
+
+	* sysdeps/x86_64/strlen.S: Remove useless instruction.
+
 2009-06-02  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* elf/Makefile (distribute): Add ifuncmain1.c, ifuncmain1pic.c,
diff --git a/sysdeps/x86_64/strlen.S b/sysdeps/x86_64/strlen.S
index 86bb8a50a92..572f3c2e41c 100644
--- a/sysdeps/x86_64/strlen.S
+++ b/sysdeps/x86_64/strlen.S
@@ -34,7 +34,6 @@ ENTRY(strlen)
 	pcmpeqb	%xmm1, %xmm0
 	shl	%cl, %esi
 	pmovmskb %xmm0, %edx
-	xorl	%eax, %eax
 	negq	%r8
 	andl	%esi, %edx
 	jnz	1f