From: H.J. Lu <hjl.tools@gmail.com>
Date: Tue, 22 Mar 2016 15:36:16 +0000 (-0700)
Subject: Don't set %rcx twice before "rep movsb"
X-Git-Tag: glibc-2.24~459
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=3c9a4cd16cbc7b79094fec68add2df66061ab5d7;p=thirdparty%2Fglibc.git

Don't set %rcx twice before "rep movsb"

	* sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S (MEMCPY):
	Don't set %rcx twice before "rep movsb".
---

diff --git a/ChangeLog b/ChangeLog
index 522bc4fbc83..54454a54bee 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2016-03-22  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S (MEMCPY):
+	Don't set %rcx twice before "rep movsb".
+
 2016-03-22  H.J. Lu  <hongjiu.lu@intel.com>
 
 	[BZ #19583]
diff --git a/sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S b/sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S
index 74fed186e9b..b615d063c07 100644
--- a/sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S
+++ b/sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S
@@ -234,7 +234,6 @@ L(gobble_data_movsb):
 	cmp	%rcx, %rdx
 	jae	L(gobble_big_data_fwd)
 	mov	%rdx, %rcx
-	mov	%rdx, %rcx
 	rep	movsb
 	ret