From f9ed7b02eed07296c9f00d8599738e2ecc024e68 Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Tue, 25 Aug 2015 11:01:20 -0700
Subject: [PATCH] Make strcmp optimized for SSE2 with unaligned load/store as
 default

Since x86-64 ld.so preserves vector registers now, we can make strcmp
optimized for SSE2 with unaligned load/store as default in libc as well
as ld.so.

	* sysdeps/x86_64/Makefile (sysdep_routines): Add
	strcmp-sse2-aligned.
	* sysdeps/x86_64/strcmp.S: Moved to ...
	* sysdeps/x86_64/multiarch/strcmp-sse2-aligned.S:  Here.
	Remove "#if !IS_IN (libc)".
	* sysdeps/x86_64/strcasecmp_l.S: Include strcmp-sse2-aligned.S
	instead of strcmp.S.
	* sysdeps/x86_64/strncase_l.S: Likewise.
	* sysdeps/x86_64/strncmp.S: Likewise.
	* sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S: Moved to ...
	* sysdeps/x86_64/strcmp.S: Here.
	Add libc_hidden_builtin_def (strcmp).
	* sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Likewise.
	* sysdeps/x86_64/multiarch/ifunc-impl-list.c
	(__libc_ifunc_impl_list): Replace __strcmp_sse2_unaligned with
	strcmp-sse2-aligned.
	* sysdeps/x86_64/multiarch/strcasecmp_l-ssse3.S: Include
	../strcmp-sse2-aligned.S instead of ../strcmp.S.
	* sysdeps/x86_64/multiarch/strcmp-ssse3.S: Likewise.
	* sysdeps/x86_64/multiarch/strncase_l-ssse3.S: Likewise.
	* sysdeps/x86_64/multiarch/strncmp-ssse3.S: Likewise.
	* sysdeps/x86_64/multiarch/strcmp.S [USE_AS_STRCMP] (STRCMP):
	Load STRCMP_SSE2 instead of __strcmp_sse2_unaligned.  Load
	__strcmp_sse2_aligned instead of STRCMP_SSE2.
	(!USE_AS_STRCMP): Include ../strcmp-sse2-aligned.S instead
	of ../strcmp.S.
---
 sysdeps/x86_64/Makefile                          |    3 +-
 sysdeps/x86_64/multiarch/Makefile                |    2 +-
 sysdeps/x86_64/multiarch/ifunc-impl-list.c       |    2 +-
 sysdeps/x86_64/multiarch/strcasecmp_l-ssse3.S    |    2 +-
 sysdeps/x86_64/multiarch/strcmp-sse2-aligned.S   |    2 +
 sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S |  213 --
 sysdeps/x86_64/multiarch/strcmp-ssse3.S          |    2 +-
 sysdeps/x86_64/multiarch/strcmp.S                |   12 +-
 sysdeps/x86_64/multiarch/strncase_l-ssse3.S      |    2 +-
 sysdeps/x86_64/multiarch/strncmp-ssse3.S         |    2 +-
 sysdeps/x86_64/strcasecmp_l.S                    |    2 +-
 sysdeps/x86_64/strcmp-sse2-aligned.S             | 2266 ++++++++++++++++++++
 sysdeps/x86_64/strcmp.S                          | 2458 ++--------------------
 sysdeps/x86_64/strncase_l.S                      |    2 +-
 sysdeps/x86_64/strncmp.S                         |    2 +-
 15 files changed, 2471 insertions(+), 2501 deletions(-)
 create mode 100644 sysdeps/x86_64/multiarch/strcmp-sse2-aligned.S
 delete mode 100644 sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S
 create mode 100644 sysdeps/x86_64/strcmp-sse2-aligned.S

diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index e50bcad..386dbda 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -14,7 +14,8 @@ tests += tst-mallocalign1
 endif
 
 ifeq ($(subdir),string)
-sysdep_routines += cacheinfo strcasecmp_l-nonascii strncase_l-nonascii
+sysdep_routines += cacheinfo strcasecmp_l-nonascii strncase_l-nonascii \
+		   strcmp-sse2-aligned
 gen-as-const-headers += locale-defines.sym
 endif
 
diff --git a/sysdeps/x86_64/multiarch/Makefile b/sysdeps/x86_64/multiarch/Makefile
index d10b4d4..9051746 100644
--- a/sysdeps/x86_64/multiarch/Makefile
+++ b/sysdeps/x86_64/multiarch/Makefile
@@ -6,7 +6,7 @@ endif
 ifeq ($(subdir),string)
 
 sysdep_routines += strncat-c stpncpy-c strncpy-c strcmp-ssse3 \
-		   strcmp-sse2-unaligned strncmp-ssse3 \
+		   strcmp-sse2-aligned strncmp-ssse3 \
 		   memcmp-sse4 memcpy-ssse3 \
 		   memcpy-sse2-unaligned mempcpy-ssse3 \
 		   memmove-ssse3 memcpy-ssse3-back mempcpy-ssse3-back \
diff --git a/sysdeps/x86_64/multiarch/ifunc-impl-list.c b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
index e5c517e..d382eee 100644
--- a/sysdeps/x86_64/multiarch/ifunc-impl-list.c
+++ b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
@@ -147,7 +147,7 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
 			      __strcmp_sse42)
 	      IFUNC_IMPL_ADD (array, i, strcmp, HAS_CPU_FEATURE (SSSE3),
 			      __strcmp_ssse3)
-	      IFUNC_IMPL_ADD (array, i, strcmp, 1, __strcmp_sse2_unaligned)
+	      IFUNC_IMPL_ADD (array, i, strcmp, 1, __strcmp_sse2_aligned)
 	      IFUNC_IMPL_ADD (array, i, strcmp, 1, __strcmp_sse2))
 
   /* Support sysdeps/x86_64/multiarch/strcpy.S.  */
diff --git a/sysdeps/x86_64/multiarch/strcasecmp_l-ssse3.S b/sysdeps/x86_64/multiarch/strcasecmp_l-ssse3.S
index fb2f9ae..1be671b 100644
--- a/sysdeps/x86_64/multiarch/strcasecmp_l-ssse3.S
+++ b/sysdeps/x86_64/multiarch/strcasecmp_l-ssse3.S
@@ -3,4 +3,4 @@
 #define NO_NOLOCALE_ALIAS
 #define STRCMP __strcasecmp_l_ssse3
 #define __strcasecmp __strcasecmp_ssse3
-#include "../strcmp.S"
+#include "../strcmp-sse2-aligned.S"
diff --git a/sysdeps/x86_64/multiarch/strcmp-sse2-aligned.S b/sysdeps/x86_64/multiarch/strcmp-sse2-aligned.S
new file mode 100644
index 0000000..d39719e
--- /dev/null
+++ b/sysdeps/x86_64/multiarch/strcmp-sse2-aligned.S
@@ -0,0 +1,2 @@
+#define STRCMP __strcmp_sse2_aligned
+#include "../strcmp-sse2-aligned.S"
diff --git a/sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S b/sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S
deleted file mode 100644
index c6606b4..0000000
--- a/sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S
+++ /dev/null
@@ -1,213 +0,0 @@
-/* strcmp with unaligned loads
-   Copyright (C) 2013-2015 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#if IS_IN (libc)
-
-#include "sysdep.h"
-
-ENTRY ( __strcmp_sse2_unaligned)
-	movl	%edi, %eax
-	xorl	%edx, %edx
-	pxor	%xmm7, %xmm7
-	orl	%esi, %eax
-	andl	$4095, %eax
-	cmpl	$4032, %eax
-	jg	L(cross_page)
-	movdqu	(%rdi), %xmm1
-	movdqu	(%rsi), %xmm0
-	pcmpeqb	%xmm1, %xmm0
-	pminub	%xmm1, %xmm0
-	pxor	%xmm1, %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pmovmskb	%xmm0, %eax
-	testq	%rax, %rax
-	je	L(next_48_bytes)
-L(return):
-	bsfq	%rax, %rdx
-	movzbl	(%rdi, %rdx), %eax
-	movzbl	(%rsi, %rdx), %edx
-	subl	%edx, %eax
-	ret
-
-	.p2align 4
-L(next_48_bytes):
-	movdqu	16(%rdi), %xmm6
-	movdqu	16(%rsi), %xmm3
-	movdqu	32(%rdi), %xmm5
-	pcmpeqb	%xmm6, %xmm3
-	movdqu	32(%rsi), %xmm2
-	pminub	%xmm6, %xmm3
-	pcmpeqb	%xmm1, %xmm3
-	movdqu	48(%rdi), %xmm4
-	pcmpeqb	%xmm5, %xmm2
-	pmovmskb	%xmm3, %edx
-	movdqu	48(%rsi), %xmm0
-	pminub	%xmm5, %xmm2
-	pcmpeqb	%xmm1, %xmm2
-	pcmpeqb	%xmm4, %xmm0
-	pmovmskb	%xmm2, %eax
-	salq	$16, %rdx
-	pminub	%xmm4, %xmm0
-	pcmpeqb	%xmm1, %xmm0
-	salq	$32, %rax
-	orq	%rdx, %rax
-	pmovmskb	%xmm0, %ecx
-	movq	%rcx, %rdx
-	salq	$48, %rdx
-	orq	%rdx, %rax
-	jne	L(return)
-L(main_loop_header):
-	leaq	64(%rdi), %rdx
-	movl	$4096, %ecx
-	pxor	%xmm9, %xmm9
-	andq	$-64, %rdx
-	subq	%rdi, %rdx
-	leaq	(%rdi, %rdx), %rax
-	addq	%rsi, %rdx
-	movq	%rdx, %rsi
-	andl	$4095, %esi
-	subq	%rsi, %rcx
-	shrq	$6, %rcx
-	movq	%rcx, %rsi
-	jmp	L(loop_start)
-
-	.p2align 4
-L(loop):
-	addq	$64, %rax
-	addq	$64, %rdx
-L(loop_start):
-	testq	%rsi, %rsi
-	leaq	-1(%rsi), %rsi
-	je	L(loop_cross_page)
-L(back_to_loop):
-	movdqu	(%rdx), %xmm0
-	movdqu	16(%rdx), %xmm1
-	movdqa	(%rax), %xmm2
-	movdqa	16(%rax), %xmm3
-	pcmpeqb	%xmm2, %xmm0
-	movdqu	32(%rdx), %xmm5
-	pcmpeqb	%xmm3, %xmm1
-	pminub	%xmm2, %xmm0
-	movdqu	48(%rdx), %xmm6
-	pminub	%xmm3, %xmm1
-	movdqa	32(%rax), %xmm2
-	pminub	%xmm1, %xmm0
-	movdqa	48(%rax), %xmm3
-	pcmpeqb	%xmm2, %xmm5
-	pcmpeqb	%xmm3, %xmm6
-	pminub	%xmm2, %xmm5
-	pminub	%xmm3, %xmm6
-	pminub	%xmm5, %xmm0
-	pminub	%xmm6, %xmm0
-	pcmpeqb	%xmm7, %xmm0
-	pmovmskb	%xmm0, %ecx
-	testl	%ecx, %ecx
-	je	L(loop)
-	pcmpeqb	%xmm7, %xmm5
-	movdqu	(%rdx), %xmm0
-	pcmpeqb	%xmm7, %xmm1
-	movdqa	(%rax), %xmm2
-	pcmpeqb	%xmm2, %xmm0
-	pminub	%xmm2, %xmm0
-	pcmpeqb	%xmm7, %xmm6
-	pcmpeqb	%xmm7, %xmm0
-	pmovmskb	%xmm1, %ecx
-	pmovmskb	%xmm5, %r8d
-	pmovmskb	%xmm0, %edi
-	salq	$16, %rcx
-	salq	$32, %r8
-	pmovmskb	%xmm6, %esi
-	orq	%r8, %rcx
-	orq	%rdi, %rcx
-	salq	$48, %rsi
-	orq	%rsi, %rcx
-	bsfq	%rcx, %rcx
-	movzbl	(%rax, %rcx), %eax
-	movzbl	(%rdx, %rcx), %edx
-	subl	%edx, %eax
-	ret
-
-	.p2align 4
-L(loop_cross_page):
-	xor	%r10, %r10
-	movq	%rdx, %r9
-	and	$63, %r9
-	subq	%r9, %r10
-
-	movdqa	(%rdx, %r10), %xmm0
-	movdqa	16(%rdx, %r10), %xmm1
-	movdqu	(%rax, %r10), %xmm2
-	movdqu	16(%rax, %r10), %xmm3
-	pcmpeqb	%xmm2, %xmm0
-	movdqa	32(%rdx, %r10), %xmm5
-	pcmpeqb	%xmm3, %xmm1
-	pminub	%xmm2, %xmm0
-	movdqa	48(%rdx, %r10), %xmm6
-	pminub	%xmm3, %xmm1
-	movdqu	32(%rax, %r10), %xmm2
-	movdqu	48(%rax, %r10), %xmm3
-	pcmpeqb	%xmm2, %xmm5
-	pcmpeqb	%xmm3, %xmm6
-	pminub	%xmm2, %xmm5
-	pminub	%xmm3, %xmm6
-
-	pcmpeqb	%xmm7, %xmm0
-	pcmpeqb	%xmm7, %xmm1
-	pcmpeqb	%xmm7, %xmm5
-	pcmpeqb	%xmm7, %xmm6
-
-	pmovmskb	%xmm1, %ecx
-	pmovmskb	%xmm5, %r8d
-	pmovmskb	%xmm0, %edi
-	salq	$16, %rcx
-	salq	$32, %r8
-	pmovmskb	%xmm6, %esi
-	orq	%r8, %rdi
-	orq	%rcx, %rdi
-	salq	$48, %rsi
-	orq	%rsi, %rdi
-	movq	%r9, %rcx
-	movq	$63, %rsi
-	shrq	%cl, %rdi
-	test	%rdi, %rdi
-	je	L(back_to_loop)
-	bsfq	%rdi, %rcx
-	movzbl	(%rax, %rcx), %eax
-	movzbl	(%rdx, %rcx), %edx
-	subl	%edx, %eax
-	ret
-
-	.p2align 4
-L(cross_page_loop):
-	cmpb	%cl, %al
-	jne	L(different)
-	addq	$1, %rdx
-	cmpq	$64, %rdx
-	je	L(main_loop_header)
-L(cross_page):
-	movzbl	(%rdi, %rdx), %eax
-	movzbl	(%rsi, %rdx), %ecx
-	testb	%al, %al
-	jne	L(cross_page_loop)
-	xorl	%eax, %eax
-L(different):
-	subl	%ecx, %eax
-	ret
-END (__strcmp_sse2_unaligned)
-
-#endif
diff --git a/sysdeps/x86_64/multiarch/strcmp-ssse3.S b/sysdeps/x86_64/multiarch/strcmp-ssse3.S
index 1b7fa33..167bb97 100644
--- a/sysdeps/x86_64/multiarch/strcmp-ssse3.S
+++ b/sysdeps/x86_64/multiarch/strcmp-ssse3.S
@@ -1,5 +1,5 @@
 #if IS_IN (libc)
 # define USE_SSSE3 1
 # define STRCMP __strcmp_ssse3
-# include "../strcmp.S"
+# include "../strcmp-sse2-aligned.S"
 #endif
diff --git a/sysdeps/x86_64/multiarch/strcmp.S b/sysdeps/x86_64/multiarch/strcmp.S
index c180ce6..4bade4e 100644
--- a/sysdeps/x86_64/multiarch/strcmp.S
+++ b/sysdeps/x86_64/multiarch/strcmp.S
@@ -86,7 +86,7 @@ ENTRY(STRCMP)
 	.type	STRCMP, @gnu_indirect_function
 	LOAD_RTLD_GLOBAL_RO_RDX
 #ifdef USE_AS_STRCMP
-	leaq	__strcmp_sse2_unaligned(%rip), %rax
+	leaq	STRCMP_SSE2(%rip), %rax
 	HAS_ARCH_FEATURE (Fast_Unaligned_Load)
 	jnz     3f
 #else
@@ -99,7 +99,11 @@ ENTRY(STRCMP)
 2:	leaq	STRCMP_SSSE3(%rip), %rax
 	HAS_CPU_FEATURE (SSSE3)
 	jnz	3f
+#ifdef USE_AS_STRCMP
+	leaq	__strcmp_sse2_aligned(%rip), %rax
+#else
 	leaq	STRCMP_SSE2(%rip), %rax
+#endif
 3:	ret
 END(STRCMP)
 
@@ -212,4 +216,8 @@ weak_alias (__strncasecmp, strncasecmp)
 	.globl __GI_STRCMP; __GI_STRCMP = STRCMP_SSE2
 #endif
 
-#include "../strcmp.S"
+#ifdef USE_AS_STRCMP
+# include "../strcmp.S"
+#else
+# include "../strcmp-sse2-aligned.S"
+#endif
diff --git a/sysdeps/x86_64/multiarch/strncase_l-ssse3.S b/sysdeps/x86_64/multiarch/strncase_l-ssse3.S
index 6728678..d6aca9c 100644
--- a/sysdeps/x86_64/multiarch/strncase_l-ssse3.S
+++ b/sysdeps/x86_64/multiarch/strncase_l-ssse3.S
@@ -3,4 +3,4 @@
 #define NO_NOLOCALE_ALIAS
 #define STRCMP __strncasecmp_l_ssse3
 #define __strncasecmp __strncasecmp_ssse3
-#include "../strcmp.S"
+#include "../strcmp-sse2-aligned.S"
diff --git a/sysdeps/x86_64/multiarch/strncmp-ssse3.S b/sysdeps/x86_64/multiarch/strncmp-ssse3.S
index 96380a4..ce08dc3 100644
--- a/sysdeps/x86_64/multiarch/strncmp-ssse3.S
+++ b/sysdeps/x86_64/multiarch/strncmp-ssse3.S
@@ -2,5 +2,5 @@
 # define USE_SSSE3 1
 # define STRCMP __strncmp_ssse3
 # define USE_AS_STRNCMP
-# include "../strcmp.S"
+# include "../strcmp-sse2-aligned.S"
 #endif
diff --git a/sysdeps/x86_64/strcasecmp_l.S b/sysdeps/x86_64/strcasecmp_l.S
index 5456b3a..8976aab 100644
--- a/sysdeps/x86_64/strcasecmp_l.S
+++ b/sysdeps/x86_64/strcasecmp_l.S
@@ -1,6 +1,6 @@
 #define STRCMP __strcasecmp_l
 #define USE_AS_STRCASECMP_L
-#include "strcmp.S"
+#include "strcmp-sse2-aligned.S"
 
 weak_alias (__strcasecmp_l, strcasecmp_l)
 libc_hidden_def (strcasecmp_l)
diff --git a/sysdeps/x86_64/strcmp-sse2-aligned.S b/sysdeps/x86_64/strcmp-sse2-aligned.S
new file mode 100644
index 0000000..41fd357
--- /dev/null
+++ b/sysdeps/x86_64/strcmp-sse2-aligned.S
@@ -0,0 +1,2266 @@
+/* Highly optimized version for x86-64.
+   Copyright (C) 1999-2015 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Based on i686 version contributed by Ulrich Drepper
+   <drepper@cygnus.com>, 1999.
+   Updated with SSE2 support contributed by Intel Corporation.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifdef STRCMP
+#include <sysdep.h>
+#include "asm-syntax.h"
+
+#undef UPDATE_STRNCMP_COUNTER
+
+#ifndef LABEL
+#define LABEL(l) L(l)
+#endif
+
+#ifdef USE_AS_STRNCMP
+/* Since the counter, %r11, is unsigned, we branch to strcmp_exitz
+   if the new counter > the old one or is 0.  */
+# define UPDATE_STRNCMP_COUNTER				\
+	/* calculate left number to compare */		\
+	lea	-16(%rcx, %r11), %r9;			\
+	cmp	%r9, %r11;				\
+	jb	LABEL(strcmp_exitz);			\
+	test	%r9, %r9;				\
+	je	LABEL(strcmp_exitz);			\
+	mov	%r9, %r11
+
+#elif defined USE_AS_STRCASECMP_L
+# include "locale-defines.h"
+
+# define UPDATE_STRNCMP_COUNTER
+#elif defined USE_AS_STRNCASECMP_L
+# include "locale-defines.h"
+
+# define UPDATE_STRNCMP_COUNTER				\
+	/* calculate left number to compare */		\
+	lea	-16(%rcx, %r11), %r9;			\
+	cmp	%r9, %r11;				\
+	jb	LABEL(strcmp_exitz);			\
+	test	%r9, %r9;				\
+	je	LABEL(strcmp_exitz);			\
+	mov	%r9, %r11
+#else
+# define UPDATE_STRNCMP_COUNTER
+#endif
+
+#ifndef USE_SSSE3
+	.text
+#else
+	.section .text.ssse3,"ax",@progbits
+#endif
+
+#ifdef USE_AS_STRCASECMP_L
+# ifndef ENTRY2
+#  define ENTRY2(name) ENTRY (name)
+#  define END2(name) END (name)
+# endif
+
+ENTRY2 (__strcasecmp)
+	movq	__libc_tsd_LOCALE@gottpoff(%rip),%rax
+	mov	%fs:(%rax),%RDX_LP
+
+	// XXX 5 byte should be before the function
+	/* 5-byte NOP.  */
+	.byte	0x0f,0x1f,0x44,0x00,0x00
+END2 (__strcasecmp)
+# ifndef NO_NOLOCALE_ALIAS
+weak_alias (__strcasecmp, strcasecmp)
+libc_hidden_def (__strcasecmp)
+# endif
+	/* FALLTHROUGH to strcasecmp_l.  */
+#elif defined USE_AS_STRNCASECMP_L
+# ifndef ENTRY2
+#  define ENTRY2(name) ENTRY (name)
+#  define END2(name) END (name)
+# endif
+
+ENTRY2 (__strncasecmp)
+	movq	__libc_tsd_LOCALE@gottpoff(%rip),%rax
+	mov	%fs:(%rax),%RCX_LP
+
+	// XXX 5 byte should be before the function
+	/* 5-byte NOP.  */
+	.byte	0x0f,0x1f,0x44,0x00,0x00
+END2 (__strncasecmp)
+# ifndef NO_NOLOCALE_ALIAS
+weak_alias (__strncasecmp, strncasecmp)
+libc_hidden_def (__strncasecmp)
+# endif
+	/* FALLTHROUGH to strncasecmp_l.  */
+#endif
+
+ENTRY (STRCMP)
+#ifdef USE_AS_STRCASECMP_L
+	/* We have to fall back on the C implementation for locales
+	   with encodings not matching ASCII for single bytes.  */
+# if LOCALE_T___LOCALES != 0 || LC_CTYPE != 0
+	mov	LOCALE_T___LOCALES+LC_CTYPE*LP_SIZE(%rdx), %RAX_LP
+# else
+	mov	(%rdx), %RAX_LP
+# endif
+	testl	$1, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax)
+	jne	__strcasecmp_l_nonascii
+#elif defined USE_AS_STRNCASECMP_L
+	/* We have to fall back on the C implementation for locales
+	   with encodings not matching ASCII for single bytes.  */
+# if LOCALE_T___LOCALES != 0 || LC_CTYPE != 0
+	mov	LOCALE_T___LOCALES+LC_CTYPE*LP_SIZE(%rcx), %RAX_LP
+# else
+	mov	(%rcx), %RAX_LP
+# endif
+	testl	$1, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax)
+	jne	__strncasecmp_l_nonascii
+#endif
+
+/*
+ * This implementation uses SSE to compare up to 16 bytes at a time.
+ */
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	test	%rdx, %rdx
+	je	LABEL(strcmp_exitz)
+	cmp	$1, %rdx
+	je	LABEL(Byte0)
+	mov	%rdx, %r11
+#endif
+	mov	%esi, %ecx
+	mov	%edi, %eax
+/* Use 64bit AND here to avoid long NOP padding.  */
+	and	$0x3f, %rcx		/* rsi alignment in cache line */
+	and	$0x3f, %rax		/* rdi alignment in cache line */
+#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
+	.section .rodata.cst16,"aM",@progbits,16
+	.align 16
+.Lbelowupper:
+	.quad	0x4040404040404040
+	.quad	0x4040404040404040
+.Ltopupper:
+	.quad	0x5b5b5b5b5b5b5b5b
+	.quad	0x5b5b5b5b5b5b5b5b
+.Ltouppermask:
+	.quad	0x2020202020202020
+	.quad	0x2020202020202020
+	.previous
+	movdqa	.Lbelowupper(%rip), %xmm5
+# define UCLOW_reg %xmm5
+	movdqa	.Ltopupper(%rip), %xmm6
+# define UCHIGH_reg %xmm6
+	movdqa	.Ltouppermask(%rip), %xmm7
+# define LCQWORD_reg %xmm7
+#endif
+	cmp	$0x30, %ecx
+	ja	LABEL(crosscache)	/* rsi: 16-byte load will cross cache line */
+	cmp	$0x30, %eax
+	ja	LABEL(crosscache)	/* rdi: 16-byte load will cross cache line */
+	movlpd	(%rdi), %xmm1
+	movlpd	(%rsi), %xmm2
+	movhpd	8(%rdi), %xmm1
+	movhpd	8(%rsi), %xmm2
+#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
+# define TOLOWER(reg1, reg2) \
+	movdqa	reg1, %xmm8;					\
+	movdqa	UCHIGH_reg, %xmm9;				\
+	movdqa	reg2, %xmm10;					\
+	movdqa	UCHIGH_reg, %xmm11;				\
+	pcmpgtb	UCLOW_reg, %xmm8;				\
+	pcmpgtb	reg1, %xmm9;					\
+	pcmpgtb	UCLOW_reg, %xmm10;				\
+	pcmpgtb	reg2, %xmm11;					\
+	pand	%xmm9, %xmm8;					\
+	pand	%xmm11, %xmm10;					\
+	pand	LCQWORD_reg, %xmm8;				\
+	pand	LCQWORD_reg, %xmm10;				\
+	por	%xmm8, reg1;					\
+	por	%xmm10, reg2
+	TOLOWER (%xmm1, %xmm2)
+#else
+# define TOLOWER(reg1, reg2)
+#endif
+	pxor	%xmm0, %xmm0		/* clear %xmm0 for null char checks */
+	pcmpeqb	%xmm1, %xmm0		/* Any null chars? */
+	pcmpeqb	%xmm2, %xmm1		/* compare first 16 bytes for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 16 bytes are same, edx == 0xffff */
+	jnz	LABEL(less16bytes)	/* If not, find different value or null char */
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)	/* finish comparision */
+#endif
+	add	$16, %rsi		/* prepare to search next 16 bytes */
+	add	$16, %rdi		/* prepare to search next 16 bytes */
+
+	/*
+	 * Determine source and destination string offsets from 16-byte alignment.
+	 * Use relative offset difference between the two to determine which case
+	 * below to use.
+	 */
+	.p2align 4
+LABEL(crosscache):
+	and	$0xfffffffffffffff0, %rsi	/* force %rsi is 16 byte aligned */
+	and	$0xfffffffffffffff0, %rdi	/* force %rdi is 16 byte aligned */
+	mov	$0xffff, %edx			/* for equivalent offset */
+	xor	%r8d, %r8d
+	and	$0xf, %ecx			/* offset of rsi */
+	and	$0xf, %eax			/* offset of rdi */
+	cmp	%eax, %ecx
+	je	LABEL(ashr_0)			/* rsi and rdi relative offset same */
+	ja	LABEL(bigger)
+	mov	%edx, %r8d			/* r8d is offset flag for exit tail */
+	xchg	%ecx, %eax
+	xchg	%rsi, %rdi
+LABEL(bigger):
+	lea	15(%rax), %r9
+	sub	%rcx, %r9
+	lea	LABEL(unaligned_table)(%rip), %r10
+	movslq	(%r10, %r9,4), %r9
+	lea	(%r10, %r9), %r10
+	jmp	*%r10				/* jump to corresponding case */
+
+/*
+ * The following cases will be handled by ashr_0
+ *  rcx(offset of rsi)  rax(offset of rdi)  relative offset  corresponding case
+ *        n(0~15)            n(0~15)           15(15+ n-n)         ashr_0
+ */
+	.p2align 4
+LABEL(ashr_0):
+
+	movdqa	(%rsi), %xmm1
+	pxor	%xmm0, %xmm0			/* clear %xmm0 for null char check */
+	pcmpeqb	%xmm1, %xmm0			/* Any null chars? */
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpeqb	(%rdi), %xmm1			/* compare 16 bytes for equality */
+#else
+	movdqa	(%rdi), %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm2, %xmm1			/* compare 16 bytes for equality */
+#endif
+	psubb	%xmm0, %xmm1			/* packed sub of comparison results*/
+	pmovmskb %xmm1, %r9d
+	shr	%cl, %edx			/* adjust 0xffff for offset */
+	shr	%cl, %r9d			/* adjust for 16-byte offset */
+	sub	%r9d, %edx
+	/*
+	 * edx must be the same with r9d if in left byte (16-rcx) is equal to
+	 * the start from (16-rax) and no null char was seen.
+	 */
+	jne	LABEL(less32bytes)		/* mismatch or null char */
+	UPDATE_STRNCMP_COUNTER
+	mov	$16, %rcx
+	mov	$16, %r9
+	pxor	%xmm0, %xmm0			/* clear xmm0, may have changed above */
+
+	/*
+	 * Now both strings are aligned at 16-byte boundary. Loop over strings
+	 * checking 32-bytes per iteration.
+	 */
+	.p2align 4
+LABEL(loop_ashr_0):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)		/* mismatch or null char seen */
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+	add	$16, %rcx
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+	add	$16, %rcx
+	jmp	LABEL(loop_ashr_0)
+
+/*
+ * The following cases will be handled by ashr_1
+ * rcx(offset of rsi)  rax(offset of rdi)   relative offset	corresponding case
+ *        n(15)            n -15            0(15 +(n-15) - n)         ashr_1
+ */
+	.p2align 4
+LABEL(ashr_1):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0		/* Any null chars? */
+	pslldq	$15, %xmm2		/* shift first string to align with second */
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2		/* compare 16 bytes for equality */
+	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx		/* adjust 0xffff for offset */
+	shr	%cl, %r9d		/* adjust for 16-byte offset */
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)	/* mismatch or null char seen */
+	movdqa	(%rdi), %xmm3
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx		/* index for loads*/
+	mov	$1, %r9d		/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	1(%rdi), %r10
+	and	$0xfff, %r10		/* offset into 4K page */
+	sub	$0x1000, %r10		/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_1):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_1)	/* cross page boundary */
+
+LABEL(gobble_ashr_1):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4		 /* store for next cycle */
+
+#ifndef USE_SSSE3
+	psrldq	$1, %xmm3
+	pslldq	$15, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$1, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_1)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4		/* store for next cycle */
+
+#ifndef USE_SSSE3
+	psrldq	$1, %xmm3
+	pslldq	$15, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$1, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_1)
+
+	/*
+	 * Nibble avoids loads across page boundary. This is to avoid a potential
+	 * access into unmapped memory.
+	 */
+	.p2align 4
+LABEL(nibble_ashr_1):
+	pcmpeqb	%xmm3, %xmm0		 /* check nibble for null char*/
+	pmovmskb %xmm0, %edx
+	test	$0xfffe, %edx
+	jnz	LABEL(ashr_1_exittail)	/* find null char*/
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$15, %r11
+	jbe	LABEL(ashr_1_exittail)
+#endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10		/* substract 4K from %r10 */
+	jmp	LABEL(gobble_ashr_1)
+
+	/*
+	 * Once find null char, determine if there is a string mismatch
+	 * before the null char.
+	 */
+	.p2align 4
+LABEL(ashr_1_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$1, %xmm0
+	psrldq	$1, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ * The following cases will be handled by ashr_2
+ * rcx(offset of rsi)  rax(offset of rdi)   relative offset   corresponding case
+ *        n(14~15)            n -14         1(15 +(n-14) - n)         ashr_2
+ */
+	.p2align 4
+LABEL(ashr_2):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq	$14, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$2, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	2(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_2):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_2)
+
+LABEL(gobble_ashr_2):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$2, %xmm3
+	pslldq	$14, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$2, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_2)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$2, %xmm3
+	pslldq	$14, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$2, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_2)
+
+	.p2align 4
+LABEL(nibble_ashr_2):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0xfffc, %edx
+	jnz	LABEL(ashr_2_exittail)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$14, %r11
+	jbe	LABEL(ashr_2_exittail)
+#endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_2)
+
+	.p2align 4
+LABEL(ashr_2_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$2, %xmm0
+	psrldq	$2, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ * The following cases will be handled by ashr_3
+ *  rcx(offset of rsi)  rax(offset of rdi)  relative offset	 corresponding case
+ *        n(13~15)            n -13         2(15 +(n-13) - n)         ashr_3
+ */
+	.p2align 4
+LABEL(ashr_3):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq	$13, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$3, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	3(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_3):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_3)
+
+LABEL(gobble_ashr_3):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$3, %xmm3
+	pslldq	$13, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$3, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_3)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$3, %xmm3
+	pslldq	$13, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$3, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_3)
+
+	.p2align 4
+LABEL(nibble_ashr_3):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0xfff8, %edx
+	jnz	LABEL(ashr_3_exittail)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$13, %r11
+	jbe	LABEL(ashr_3_exittail)
+#endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_3)
+
+	.p2align 4
+LABEL(ashr_3_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$3, %xmm0
+	psrldq	$3, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ * The following cases will be handled by ashr_4
+ *  rcx(offset of rsi)  rax(offset of rdi)  relative offset	 corresponding case
+ *        n(12~15)            n -12         3(15 +(n-12) - n)         ashr_4
+ */
+	.p2align 4
+LABEL(ashr_4):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq	$12, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$4, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	4(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_4):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_4)
+
+LABEL(gobble_ashr_4):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$4, %xmm3
+	pslldq	$12, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$4, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_4)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$4, %xmm3
+	pslldq	$12, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$4, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_4)
+
+	.p2align 4
+LABEL(nibble_ashr_4):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0xfff0, %edx
+	jnz	LABEL(ashr_4_exittail)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$12, %r11
+	jbe	LABEL(ashr_4_exittail)
+#endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_4)
+
+	.p2align 4
+LABEL(ashr_4_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$4, %xmm0
+	psrldq	$4, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ * The following cases will be handled by ashr_5
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
+ *        n(11~15)          n - 11		  4(15 +(n-11) - n)         ashr_5
+ */
+	.p2align 4
+LABEL(ashr_5):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq	$11, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$5, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	5(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_5):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_5)
+
+LABEL(gobble_ashr_5):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$5, %xmm3
+	pslldq	$11, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$5, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_5)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$5, %xmm3
+	pslldq	$11, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$5, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_5)
+
+	.p2align 4
+LABEL(nibble_ashr_5):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0xffe0, %edx
+	jnz	LABEL(ashr_5_exittail)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$11, %r11
+	jbe	LABEL(ashr_5_exittail)
+#endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_5)
+
+	.p2align 4
+LABEL(ashr_5_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$5, %xmm0
+	psrldq	$5, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ * The following cases will be handled by ashr_6
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
+ *        n(10~15)          n - 10		  5(15 +(n-10) - n)         ashr_6
+ */
+	.p2align 4
+LABEL(ashr_6):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq	$10, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$6, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	6(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_6):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_6)
+
+LABEL(gobble_ashr_6):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$6, %xmm3
+	pslldq	$10, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$6, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_6)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$6, %xmm3
+	pslldq	$10, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$6, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_6)
+
+	.p2align 4
+LABEL(nibble_ashr_6):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0xffc0, %edx
+	jnz	LABEL(ashr_6_exittail)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$10, %r11
+	jbe	LABEL(ashr_6_exittail)
+#endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_6)
+
+	.p2align 4
+LABEL(ashr_6_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$6, %xmm0
+	psrldq	$6, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ * The following cases will be handled by ashr_7
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
+ *        n(9~15)          n - 9                6(15 +(n - 9) - n)         ashr_7
+ */
+	.p2align 4
+LABEL(ashr_7):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq	$9, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$7, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	7(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_7):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_7)
+
+LABEL(gobble_ashr_7):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$7, %xmm3
+	pslldq	$9, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$7, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_7)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$7, %xmm3
+	pslldq	$9, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$7, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_7)
+
+	.p2align 4
+LABEL(nibble_ashr_7):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0xff80, %edx
+	jnz	LABEL(ashr_7_exittail)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$9, %r11
+	jbe	LABEL(ashr_7_exittail)
+#endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_7)
+
+	.p2align 4
+LABEL(ashr_7_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$7, %xmm0
+	psrldq	$7, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ *  The following cases will be handled by ashr_8
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
+ *        n(8~15)          n - 8                7(15 +(n - 8) - n)         ashr_8
+ */
+	.p2align 4
+LABEL(ashr_8):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq	$8, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$8, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	8(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_8):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_8)
+
+LABEL(gobble_ashr_8):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$8, %xmm3
+	pslldq	$8, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$8, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_8)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$8, %xmm3
+	pslldq	$8, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$8, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_8)
+
+	.p2align 4
+LABEL(nibble_ashr_8):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0xff00, %edx
+	jnz	LABEL(ashr_8_exittail)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$8, %r11
+	jbe	LABEL(ashr_8_exittail)
+#endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_8)
+
+	.p2align 4
+LABEL(ashr_8_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$8, %xmm0
+	psrldq	$8, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ *  The following cases will be handled by ashr_9
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
+ *        n(7~15)          n - 7                8(15 +(n - 7) - n)         ashr_9
+ */
+	.p2align 4
+LABEL(ashr_9):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq	$7, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$9, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	9(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_9):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_9)
+
+LABEL(gobble_ashr_9):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$9, %xmm3
+	pslldq	$7, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$9, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_9)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$9, %xmm3
+	pslldq	$7, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$9, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3		/* store for next cycle */
+	jmp	LABEL(loop_ashr_9)
+
+	.p2align 4
+LABEL(nibble_ashr_9):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0xfe00, %edx
+	jnz	LABEL(ashr_9_exittail)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$7, %r11
+	jbe	LABEL(ashr_9_exittail)
+#endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_9)
+
+	.p2align 4
+LABEL(ashr_9_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$9, %xmm0
+	psrldq	$9, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ *  The following cases will be handled by ashr_10
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
+ *        n(6~15)          n - 6                9(15 +(n - 6) - n)         ashr_10
+ */
+	.p2align 4
+LABEL(ashr_10):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq	$6, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$10, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	10(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_10):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_10)
+
+LABEL(gobble_ashr_10):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$10, %xmm3
+	pslldq	$6, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$10, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_10)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$10, %xmm3
+	pslldq	$6, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$10, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_10)
+
+	.p2align 4
+LABEL(nibble_ashr_10):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0xfc00, %edx
+	jnz	LABEL(ashr_10_exittail)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$6, %r11
+	jbe	LABEL(ashr_10_exittail)
+#endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_10)
+
+	.p2align 4
+LABEL(ashr_10_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$10, %xmm0
+	psrldq	$10, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ *  The following cases will be handled by ashr_11
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
+ *        n(5~15)          n - 5               10(15 +(n - 5) - n)         ashr_11
+ */
+	.p2align 4
+LABEL(ashr_11):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq	$5, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$11, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	11(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_11):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_11)
+
+LABEL(gobble_ashr_11):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$11, %xmm3
+	pslldq	$5, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$11, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_11)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$11, %xmm3
+	pslldq	$5, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$11, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_11)
+
+	.p2align 4
+LABEL(nibble_ashr_11):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0xf800, %edx
+	jnz	LABEL(ashr_11_exittail)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$5, %r11
+	jbe	LABEL(ashr_11_exittail)
+#endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_11)
+
+	.p2align 4
+LABEL(ashr_11_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$11, %xmm0
+	psrldq	$11, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ *  The following cases will be handled by ashr_12
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
+ *        n(4~15)          n - 4                11(15 +(n - 4) - n)         ashr_12
+ */
+	.p2align 4
+LABEL(ashr_12):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq	$4, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$12, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	12(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_12):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_12)
+
+LABEL(gobble_ashr_12):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$12, %xmm3
+	pslldq	$4, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$12, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_12)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$12, %xmm3
+	pslldq	$4, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$12, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_12)
+
+	.p2align 4
+LABEL(nibble_ashr_12):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0xf000, %edx
+	jnz	LABEL(ashr_12_exittail)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$4, %r11
+	jbe	LABEL(ashr_12_exittail)
+#endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_12)
+
+	.p2align 4
+LABEL(ashr_12_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$12, %xmm0
+	psrldq	$12, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ *  The following cases will be handled by ashr_13
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
+ *        n(3~15)          n - 3                12(15 +(n - 3) - n)         ashr_13
+ */
+	.p2align 4
+LABEL(ashr_13):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq	$3, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$13, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	13(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_13):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_13)
+
+LABEL(gobble_ashr_13):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$13, %xmm3
+	pslldq	$3, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$13, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_13)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$13, %xmm3
+	pslldq	$3, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$13, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_13)
+
+	.p2align 4
+LABEL(nibble_ashr_13):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0xe000, %edx
+	jnz	LABEL(ashr_13_exittail)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$3, %r11
+	jbe	LABEL(ashr_13_exittail)
+#endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_13)
+
+	.p2align 4
+LABEL(ashr_13_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq  $13, %xmm0
+	psrldq  $13, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ *  The following cases will be handled by ashr_14
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
+ *        n(2~15)          n - 2                13(15 +(n - 2) - n)         ashr_14
+ */
+	.p2align 4
+LABEL(ashr_14):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq  $2, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$14, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	14(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_14):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_14)
+
+LABEL(gobble_ashr_14):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$14, %xmm3
+	pslldq	$2, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$14, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_14)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$14, %xmm3
+	pslldq	$2, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$14, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP | defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_14)
+
+	.p2align 4
+LABEL(nibble_ashr_14):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0xc000, %edx
+	jnz	LABEL(ashr_14_exittail)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$2, %r11
+	jbe	LABEL(ashr_14_exittail)
+#endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_14)
+
+	.p2align 4
+LABEL(ashr_14_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$14, %xmm0
+	psrldq	$14, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ *  The following cases will be handled by ashr_15
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
+ *        n(1~15)          n - 1                14(15 +(n - 1) - n)         ashr_15
+ */
+	.p2align 4
+LABEL(ashr_15):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq	$1, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$15, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	15(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_15):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_15)
+
+LABEL(gobble_ashr_15):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$15, %xmm3
+	pslldq	$1, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$15, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_15)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+#ifndef USE_SSSE3
+	psrldq	$15, %xmm3
+	pslldq	$1, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+#else
+	palignr	$15, %xmm3, %xmm2	/* merge into one 16byte value */
+#endif
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_15)
+
+	.p2align 4
+LABEL(nibble_ashr_15):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0x8000, %edx
+	jnz	LABEL(ashr_15_exittail)
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmpq	$1, %r11
+	jbe	LABEL(ashr_15_exittail)
+#endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_15)
+
+	.p2align 4
+LABEL(ashr_15_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$15, %xmm3
+	psrldq	$15, %xmm0
+
+	.p2align 4
+LABEL(aftertail):
+	TOLOWER (%xmm1, %xmm3)
+	pcmpeqb	%xmm3, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	not	%edx
+
+	.p2align 4
+LABEL(exit):
+	lea	-16(%r9, %rcx), %rax	/* locate the exact offset for rdi */
+LABEL(less32bytes):
+	lea	(%rdi, %rax), %rdi	/* locate the exact address for first operand(rdi) */
+	lea	(%rsi, %rcx), %rsi	/* locate the exact address for second operand(rsi) */
+	test	%r8d, %r8d
+	jz	LABEL(ret)
+	xchg	%rsi, %rdi		/* recover original order according to flag(%r8d) */
+
+	.p2align 4
+LABEL(ret):
+LABEL(less16bytes):
+	bsf	%rdx, %rdx		/* find and store bit index in %rdx */
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	%rdx, %r11
+	jbe	LABEL(strcmp_exitz)
+#endif
+	movzbl	(%rsi, %rdx), %ecx
+	movzbl	(%rdi, %rdx), %eax
+
+#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
+	leaq	_nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx
+	movl	(%rdx,%rcx,4), %ecx
+	movl	(%rdx,%rax,4), %eax
+#endif
+
+	sub	%ecx, %eax
+	ret
+
+LABEL(strcmp_exitz):
+	xor	%eax, %eax
+	ret
+
+	.p2align 4
+LABEL(Byte0):
+	movzx	(%rsi), %ecx
+	movzx	(%rdi), %eax
+
+#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
+	leaq	_nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx
+	movl	(%rdx,%rcx,4), %ecx
+	movl	(%rdx,%rax,4), %eax
+#endif
+
+	sub	%ecx, %eax
+	ret
+END (STRCMP)
+
+	.section .rodata,"a",@progbits
+	.p2align 3
+LABEL(unaligned_table):
+	.int	LABEL(ashr_1) - LABEL(unaligned_table)
+	.int	LABEL(ashr_2) - LABEL(unaligned_table)
+	.int	LABEL(ashr_3) - LABEL(unaligned_table)
+	.int	LABEL(ashr_4) - LABEL(unaligned_table)
+	.int	LABEL(ashr_5) - LABEL(unaligned_table)
+	.int	LABEL(ashr_6) - LABEL(unaligned_table)
+	.int	LABEL(ashr_7) - LABEL(unaligned_table)
+	.int	LABEL(ashr_8) - LABEL(unaligned_table)
+	.int	LABEL(ashr_9) - LABEL(unaligned_table)
+	.int	LABEL(ashr_10) - LABEL(unaligned_table)
+	.int	LABEL(ashr_11) - LABEL(unaligned_table)
+	.int	LABEL(ashr_12) - LABEL(unaligned_table)
+	.int	LABEL(ashr_13) - LABEL(unaligned_table)
+	.int	LABEL(ashr_14) - LABEL(unaligned_table)
+	.int	LABEL(ashr_15) - LABEL(unaligned_table)
+	.int	LABEL(ashr_0) - LABEL(unaligned_table)
+libc_hidden_builtin_def (STRCMP)
+#endif /* STRCMP */
diff --git a/sysdeps/x86_64/strcmp.S b/sysdeps/x86_64/strcmp.S
index 1329649..1f77b5e 100644
--- a/sysdeps/x86_64/strcmp.S
+++ b/sysdeps/x86_64/strcmp.S
@@ -1,9 +1,6 @@
-/* Highly optimized version for x86-64.
-   Copyright (C) 1999-2015 Free Software Foundation, Inc.
+/* strcmp with unaligned loads
+   Copyright (C) 2013-2015 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Based on i686 version contributed by Ulrich Drepper
-   <drepper@cygnus.com>, 1999.
-   Updated with SSE2 support contributed by Intel Corporation.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
@@ -19,2286 +16,195 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#include <sysdep.h>
-#include "asm-syntax.h"
-
-#undef UPDATE_STRNCMP_COUNTER
-
-#ifndef LABEL
-#define LABEL(l) L(l)
-#endif
-
-#ifdef USE_AS_STRNCMP
-/* The simplified code below is not set up to handle strncmp() so far.
-   Should this become necessary it has to be implemented.  For now
-   just report the problem.  */
-# if !IS_IN (libc)
-#  error "strncmp not implemented so far"
-# endif
-
-/* Since the counter, %r11, is unsigned, we branch to strcmp_exitz
-   if the new counter > the old one or is 0.  */
-# define UPDATE_STRNCMP_COUNTER				\
-	/* calculate left number to compare */		\
-	lea	-16(%rcx, %r11), %r9;			\
-	cmp	%r9, %r11;				\
-	jb	LABEL(strcmp_exitz);			\
-	test	%r9, %r9;				\
-	je	LABEL(strcmp_exitz);			\
-	mov	%r9, %r11
-
-#elif defined USE_AS_STRCASECMP_L
-# include "locale-defines.h"
-
-/* No support for strcasecmp outside libc so far since it is not needed.  */
-# if !IS_IN (libc)
-#  error "strcasecmp_l not implemented so far"
-# endif
-
-# define UPDATE_STRNCMP_COUNTER
-#elif defined USE_AS_STRNCASECMP_L
-# include "locale-defines.h"
-
-/* No support for strncasecmp outside libc so far since it is not needed.  */
-# if !IS_IN (libc)
-#  error "strncasecmp_l not implemented so far"
-# endif
-
-# define UPDATE_STRNCMP_COUNTER				\
-	/* calculate left number to compare */		\
-	lea	-16(%rcx, %r11), %r9;			\
-	cmp	%r9, %r11;				\
-	jb	LABEL(strcmp_exitz);			\
-	test	%r9, %r9;				\
-	je	LABEL(strcmp_exitz);			\
-	mov	%r9, %r11
-#else
-# define UPDATE_STRNCMP_COUNTER
-# ifndef STRCMP
-#  define STRCMP strcmp
-# endif
-#endif
-
-#ifndef USE_SSSE3
-	.text
-#else
-	.section .text.ssse3,"ax",@progbits
-#endif
-
-#ifdef USE_AS_STRCASECMP_L
-# ifndef ENTRY2
-#  define ENTRY2(name) ENTRY (name)
-#  define END2(name) END (name)
-# endif
-
-ENTRY2 (__strcasecmp)
-	movq	__libc_tsd_LOCALE@gottpoff(%rip),%rax
-	mov	%fs:(%rax),%RDX_LP
-
-	// XXX 5 byte should be before the function
-	/* 5-byte NOP.  */
-	.byte	0x0f,0x1f,0x44,0x00,0x00
-END2 (__strcasecmp)
-# ifndef NO_NOLOCALE_ALIAS
-weak_alias (__strcasecmp, strcasecmp)
-libc_hidden_def (__strcasecmp)
-# endif
-	/* FALLTHROUGH to strcasecmp_l.  */
-#elif defined USE_AS_STRNCASECMP_L
-# ifndef ENTRY2
-#  define ENTRY2(name) ENTRY (name)
-#  define END2(name) END (name)
-# endif
-
-ENTRY2 (__strncasecmp)
-	movq	__libc_tsd_LOCALE@gottpoff(%rip),%rax
-	mov	%fs:(%rax),%RCX_LP
-
-	// XXX 5 byte should be before the function
-	/* 5-byte NOP.  */
-	.byte	0x0f,0x1f,0x44,0x00,0x00
-END2 (__strncasecmp)
-# ifndef NO_NOLOCALE_ALIAS
-weak_alias (__strncasecmp, strncasecmp)
-libc_hidden_def (__strncasecmp)
-# endif
-	/* FALLTHROUGH to strncasecmp_l.  */
-#endif
-
-ENTRY (STRCMP)
-#if !IS_IN (libc)
-/* Simple version since we can't use SSE registers in ld.so.  */
-L(oop):	movb	(%rdi), %al
-	cmpb	(%rsi), %al
-	jne	L(neq)
-	incq	%rdi
-	incq	%rsi
-	testb	%al, %al
-	jnz	L(oop)
-
-	xorl	%eax, %eax
-	ret
-
-L(neq):	movl	$1, %eax
-	movl	$-1, %ecx
-	cmovbl	%ecx, %eax
+#include "sysdep.h"
+
+ENTRY (strcmp)
+	movl	%edi, %eax
+	xorl	%edx, %edx
+	pxor	%xmm7, %xmm7
+	orl	%esi, %eax
+	andl	$4095, %eax
+	cmpl	$4032, %eax
+	jg	L(cross_page)
+	movdqu	(%rdi), %xmm1
+	movdqu	(%rsi), %xmm0
+	pcmpeqb	%xmm1, %xmm0
+	pminub	%xmm1, %xmm0
+	pxor	%xmm1, %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pmovmskb	%xmm0, %eax
+	testq	%rax, %rax
+	je	L(next_48_bytes)
+L(return):
+	bsfq	%rax, %rdx
+	movzbl	(%rdi, %rdx), %eax
+	movzbl	(%rsi, %rdx), %edx
+	subl	%edx, %eax
 	ret
-END (STRCMP)
-#else	/* !IS_IN (libc) */
-# ifdef USE_AS_STRCASECMP_L
-	/* We have to fall back on the C implementation for locales
-	   with encodings not matching ASCII for single bytes.  */
-#  if LOCALE_T___LOCALES != 0 || LC_CTYPE != 0
-	mov	LOCALE_T___LOCALES+LC_CTYPE*LP_SIZE(%rdx), %RAX_LP
-#  else
-	mov	(%rdx), %RAX_LP
-#  endif
-	testl	$1, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax)
-	jne	__strcasecmp_l_nonascii
-# elif defined USE_AS_STRNCASECMP_L
-	/* We have to fall back on the C implementation for locales
-	   with encodings not matching ASCII for single bytes.  */
-#  if LOCALE_T___LOCALES != 0 || LC_CTYPE != 0
-	mov	LOCALE_T___LOCALES+LC_CTYPE*LP_SIZE(%rcx), %RAX_LP
-#  else
-	mov	(%rcx), %RAX_LP
-#  endif
-	testl	$1, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax)
-	jne	__strncasecmp_l_nonascii
-# endif
-
-/*
- * This implementation uses SSE to compare up to 16 bytes at a time.
- */
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	test	%rdx, %rdx
-	je	LABEL(strcmp_exitz)
-	cmp	$1, %rdx
-	je	LABEL(Byte0)
-	mov	%rdx, %r11
-# endif
-	mov	%esi, %ecx
-	mov	%edi, %eax
-/* Use 64bit AND here to avoid long NOP padding.  */
-	and	$0x3f, %rcx		/* rsi alignment in cache line */
-	and	$0x3f, %rax		/* rdi alignment in cache line */
-# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
-	.section .rodata.cst16,"aM",@progbits,16
-	.align 16
-.Lbelowupper:
-	.quad	0x4040404040404040
-	.quad	0x4040404040404040
-.Ltopupper:
-	.quad	0x5b5b5b5b5b5b5b5b
-	.quad	0x5b5b5b5b5b5b5b5b
-.Ltouppermask:
-	.quad	0x2020202020202020
-	.quad	0x2020202020202020
-	.previous
-	movdqa	.Lbelowupper(%rip), %xmm5
-#  define UCLOW_reg %xmm5
-	movdqa	.Ltopupper(%rip), %xmm6
-#  define UCHIGH_reg %xmm6
-	movdqa	.Ltouppermask(%rip), %xmm7
-#  define LCQWORD_reg %xmm7
-# endif
-	cmp	$0x30, %ecx
-	ja	LABEL(crosscache)	/* rsi: 16-byte load will cross cache line */
-	cmp	$0x30, %eax
-	ja	LABEL(crosscache)	/* rdi: 16-byte load will cross cache line */
-	movlpd	(%rdi), %xmm1
-	movlpd	(%rsi), %xmm2
-	movhpd	8(%rdi), %xmm1
-	movhpd	8(%rsi), %xmm2
-# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
-#  define TOLOWER(reg1, reg2) \
-	movdqa	reg1, %xmm8;					\
-	movdqa	UCHIGH_reg, %xmm9;				\
-	movdqa	reg2, %xmm10;					\
-	movdqa	UCHIGH_reg, %xmm11;				\
-	pcmpgtb	UCLOW_reg, %xmm8;				\
-	pcmpgtb	reg1, %xmm9;					\
-	pcmpgtb	UCLOW_reg, %xmm10;				\
-	pcmpgtb	reg2, %xmm11;					\
-	pand	%xmm9, %xmm8;					\
-	pand	%xmm11, %xmm10;					\
-	pand	LCQWORD_reg, %xmm8;				\
-	pand	LCQWORD_reg, %xmm10;				\
-	por	%xmm8, reg1;					\
-	por	%xmm10, reg2
-	TOLOWER (%xmm1, %xmm2)
-# else
-#  define TOLOWER(reg1, reg2)
-# endif
-	pxor	%xmm0, %xmm0		/* clear %xmm0 for null char checks */
-	pcmpeqb	%xmm1, %xmm0		/* Any null chars? */
-	pcmpeqb	%xmm2, %xmm1		/* compare first 16 bytes for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 16 bytes are same, edx == 0xffff */
-	jnz	LABEL(less16bytes)	/* If not, find different value or null char */
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)	/* finish comparision */
-# endif
-	add	$16, %rsi		/* prepare to search next 16 bytes */
-	add	$16, %rdi		/* prepare to search next 16 bytes */
-
-	/*
-	 * Determine source and destination string offsets from 16-byte alignment.
-	 * Use relative offset difference between the two to determine which case
-	 * below to use.
-	 */
-	.p2align 4
-LABEL(crosscache):
-	and	$0xfffffffffffffff0, %rsi	/* force %rsi is 16 byte aligned */
-	and	$0xfffffffffffffff0, %rdi	/* force %rdi is 16 byte aligned */
-	mov	$0xffff, %edx			/* for equivalent offset */
-	xor	%r8d, %r8d
-	and	$0xf, %ecx			/* offset of rsi */
-	and	$0xf, %eax			/* offset of rdi */
-	cmp	%eax, %ecx
-	je	LABEL(ashr_0)			/* rsi and rdi relative offset same */
-	ja	LABEL(bigger)
-	mov	%edx, %r8d			/* r8d is offset flag for exit tail */
-	xchg	%ecx, %eax
-	xchg	%rsi, %rdi
-LABEL(bigger):
-	lea	15(%rax), %r9
-	sub	%rcx, %r9
-	lea	LABEL(unaligned_table)(%rip), %r10
-	movslq	(%r10, %r9,4), %r9
-	lea	(%r10, %r9), %r10
-	jmp	*%r10				/* jump to corresponding case */
-
-/*
- * The following cases will be handled by ashr_0
- *  rcx(offset of rsi)  rax(offset of rdi)  relative offset  corresponding case
- *        n(0~15)            n(0~15)           15(15+ n-n)         ashr_0
- */
-	.p2align 4
-LABEL(ashr_0):
-
-	movdqa	(%rsi), %xmm1
-	pxor	%xmm0, %xmm0			/* clear %xmm0 for null char check */
-	pcmpeqb	%xmm1, %xmm0			/* Any null chars? */
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpeqb	(%rdi), %xmm1			/* compare 16 bytes for equality */
-# else
-	movdqa	(%rdi), %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm2, %xmm1			/* compare 16 bytes for equality */
-# endif
-	psubb	%xmm0, %xmm1			/* packed sub of comparison results*/
-	pmovmskb %xmm1, %r9d
-	shr	%cl, %edx			/* adjust 0xffff for offset */
-	shr	%cl, %r9d			/* adjust for 16-byte offset */
-	sub	%r9d, %edx
-	/*
-	 * edx must be the same with r9d if in left byte (16-rcx) is equal to
-	 * the start from (16-rax) and no null char was seen.
-	 */
-	jne	LABEL(less32bytes)		/* mismatch or null char */
-	UPDATE_STRNCMP_COUNTER
-	mov	$16, %rcx
-	mov	$16, %r9
-	pxor	%xmm0, %xmm0			/* clear xmm0, may have changed above */
-
-	/*
-	 * Now both strings are aligned at 16-byte boundary. Loop over strings
-	 * checking 32-bytes per iteration.
-	 */
-	.p2align 4
-LABEL(loop_ashr_0):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)		/* mismatch or null char seen */
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-	add	$16, %rcx
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-	add	$16, %rcx
-	jmp	LABEL(loop_ashr_0)
-
-/*
- * The following cases will be handled by ashr_1
- * rcx(offset of rsi)  rax(offset of rdi)   relative offset	corresponding case
- *        n(15)            n -15            0(15 +(n-15) - n)         ashr_1
- */
-	.p2align 4
-LABEL(ashr_1):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0		/* Any null chars? */
-	pslldq	$15, %xmm2		/* shift first string to align with second */
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2		/* compare 16 bytes for equality */
-	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx		/* adjust 0xffff for offset */
-	shr	%cl, %r9d		/* adjust for 16-byte offset */
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)	/* mismatch or null char seen */
-	movdqa	(%rdi), %xmm3
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx		/* index for loads*/
-	mov	$1, %r9d		/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	1(%rdi), %r10
-	and	$0xfff, %r10		/* offset into 4K page */
-	sub	$0x1000, %r10		/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_1):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_1)	/* cross page boundary */
-
-LABEL(gobble_ashr_1):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4		 /* store for next cycle */
-
-# ifndef USE_SSSE3
-	psrldq	$1, %xmm3
-	pslldq	$15, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$1, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_1)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4		/* store for next cycle */
-
-# ifndef USE_SSSE3
-	psrldq	$1, %xmm3
-	pslldq	$15, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$1, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_1)
-
-	/*
-	 * Nibble avoids loads across page boundary. This is to avoid a potential
-	 * access into unmapped memory.
-	 */
-	.p2align 4
-LABEL(nibble_ashr_1):
-	pcmpeqb	%xmm3, %xmm0		 /* check nibble for null char*/
-	pmovmskb %xmm0, %edx
-	test	$0xfffe, %edx
-	jnz	LABEL(ashr_1_exittail)	/* find null char*/
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$15, %r11
-	jbe	LABEL(ashr_1_exittail)
-# endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10		/* substract 4K from %r10 */
-	jmp	LABEL(gobble_ashr_1)
-
-	/*
-	 * Once find null char, determine if there is a string mismatch
-	 * before the null char.
-	 */
-	.p2align 4
-LABEL(ashr_1_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$1, %xmm0
-	psrldq	$1, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- * The following cases will be handled by ashr_2
- * rcx(offset of rsi)  rax(offset of rdi)   relative offset   corresponding case
- *        n(14~15)            n -14         1(15 +(n-14) - n)         ashr_2
- */
-	.p2align 4
-LABEL(ashr_2):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq	$14, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$2, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	2(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_2):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_2)
-
-LABEL(gobble_ashr_2):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$2, %xmm3
-	pslldq	$14, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$2, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_2)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$2, %xmm3
-	pslldq	$14, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$2, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_2)
-
-	.p2align 4
-LABEL(nibble_ashr_2):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0xfffc, %edx
-	jnz	LABEL(ashr_2_exittail)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$14, %r11
-	jbe	LABEL(ashr_2_exittail)
-# endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_2)
-
-	.p2align 4
-LABEL(ashr_2_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$2, %xmm0
-	psrldq	$2, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- * The following cases will be handled by ashr_3
- *  rcx(offset of rsi)  rax(offset of rdi)  relative offset	 corresponding case
- *        n(13~15)            n -13         2(15 +(n-13) - n)         ashr_3
- */
-	.p2align 4
-LABEL(ashr_3):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq	$13, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$3, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	3(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_3):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_3)
-
-LABEL(gobble_ashr_3):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$3, %xmm3
-	pslldq	$13, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$3, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_3)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$3, %xmm3
-	pslldq	$13, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$3, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_3)
-
-	.p2align 4
-LABEL(nibble_ashr_3):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0xfff8, %edx
-	jnz	LABEL(ashr_3_exittail)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$13, %r11
-	jbe	LABEL(ashr_3_exittail)
-# endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_3)
-
-	.p2align 4
-LABEL(ashr_3_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$3, %xmm0
-	psrldq	$3, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- * The following cases will be handled by ashr_4
- *  rcx(offset of rsi)  rax(offset of rdi)  relative offset	 corresponding case
- *        n(12~15)            n -12         3(15 +(n-12) - n)         ashr_4
- */
-	.p2align 4
-LABEL(ashr_4):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq	$12, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$4, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	4(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_4):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_4)
-
-LABEL(gobble_ashr_4):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$4, %xmm3
-	pslldq	$12, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$4, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_4)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$4, %xmm3
-	pslldq	$12, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$4, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_4)
-
-	.p2align 4
-LABEL(nibble_ashr_4):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0xfff0, %edx
-	jnz	LABEL(ashr_4_exittail)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$12, %r11
-	jbe	LABEL(ashr_4_exittail)
-# endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_4)
-
-	.p2align 4
-LABEL(ashr_4_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$4, %xmm0
-	psrldq	$4, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- * The following cases will be handled by ashr_5
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
- *        n(11~15)          n - 11		  4(15 +(n-11) - n)         ashr_5
- */
-	.p2align 4
-LABEL(ashr_5):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq	$11, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$5, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	5(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_5):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_5)
-
-LABEL(gobble_ashr_5):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$5, %xmm3
-	pslldq	$11, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$5, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_5)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$5, %xmm3
-	pslldq	$11, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$5, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_5)
-
-	.p2align 4
-LABEL(nibble_ashr_5):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0xffe0, %edx
-	jnz	LABEL(ashr_5_exittail)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$11, %r11
-	jbe	LABEL(ashr_5_exittail)
-# endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_5)
-
-	.p2align 4
-LABEL(ashr_5_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$5, %xmm0
-	psrldq	$5, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- * The following cases will be handled by ashr_6
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
- *        n(10~15)          n - 10		  5(15 +(n-10) - n)         ashr_6
- */
-	.p2align 4
-LABEL(ashr_6):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq	$10, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$6, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	6(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_6):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_6)
-
-LABEL(gobble_ashr_6):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$6, %xmm3
-	pslldq	$10, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$6, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_6)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$6, %xmm3
-	pslldq	$10, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$6, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_6)
-
-	.p2align 4
-LABEL(nibble_ashr_6):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0xffc0, %edx
-	jnz	LABEL(ashr_6_exittail)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$10, %r11
-	jbe	LABEL(ashr_6_exittail)
-# endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_6)
-
-	.p2align 4
-LABEL(ashr_6_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$6, %xmm0
-	psrldq	$6, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- * The following cases will be handled by ashr_7
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
- *        n(9~15)          n - 9                6(15 +(n - 9) - n)         ashr_7
- */
-	.p2align 4
-LABEL(ashr_7):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq	$9, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$7, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	7(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_7):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_7)
-
-LABEL(gobble_ashr_7):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$7, %xmm3
-	pslldq	$9, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$7, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_7)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$7, %xmm3
-	pslldq	$9, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$7, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_7)
-
-	.p2align 4
-LABEL(nibble_ashr_7):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0xff80, %edx
-	jnz	LABEL(ashr_7_exittail)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$9, %r11
-	jbe	LABEL(ashr_7_exittail)
-# endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_7)
-
-	.p2align 4
-LABEL(ashr_7_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$7, %xmm0
-	psrldq	$7, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- *  The following cases will be handled by ashr_8
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
- *        n(8~15)          n - 8                7(15 +(n - 8) - n)         ashr_8
- */
-	.p2align 4
-LABEL(ashr_8):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq	$8, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$8, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	8(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_8):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_8)
-
-LABEL(gobble_ashr_8):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$8, %xmm3
-	pslldq	$8, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$8, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_8)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$8, %xmm3
-	pslldq	$8, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$8, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_8)
-
-	.p2align 4
-LABEL(nibble_ashr_8):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0xff00, %edx
-	jnz	LABEL(ashr_8_exittail)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$8, %r11
-	jbe	LABEL(ashr_8_exittail)
-# endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_8)
-
-	.p2align 4
-LABEL(ashr_8_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$8, %xmm0
-	psrldq	$8, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- *  The following cases will be handled by ashr_9
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
- *        n(7~15)          n - 7                8(15 +(n - 7) - n)         ashr_9
- */
-	.p2align 4
-LABEL(ashr_9):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq	$7, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$9, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	9(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_9):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_9)
-
-LABEL(gobble_ashr_9):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$9, %xmm3
-	pslldq	$7, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$9, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_9)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$9, %xmm3
-	pslldq	$7, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$9, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3		/* store for next cycle */
-	jmp	LABEL(loop_ashr_9)
-
-	.p2align 4
-LABEL(nibble_ashr_9):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0xfe00, %edx
-	jnz	LABEL(ashr_9_exittail)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$7, %r11
-	jbe	LABEL(ashr_9_exittail)
-# endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_9)
-
-	.p2align 4
-LABEL(ashr_9_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$9, %xmm0
-	psrldq	$9, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- *  The following cases will be handled by ashr_10
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
- *        n(6~15)          n - 6                9(15 +(n - 6) - n)         ashr_10
- */
-	.p2align 4
-LABEL(ashr_10):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq	$6, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$10, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	10(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_10):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_10)
-
-LABEL(gobble_ashr_10):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$10, %xmm3
-	pslldq	$6, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$10, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_10)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$10, %xmm3
-	pslldq	$6, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$10, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_10)
-
-	.p2align 4
-LABEL(nibble_ashr_10):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0xfc00, %edx
-	jnz	LABEL(ashr_10_exittail)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$6, %r11
-	jbe	LABEL(ashr_10_exittail)
-# endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_10)
-
-	.p2align 4
-LABEL(ashr_10_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$10, %xmm0
-	psrldq	$10, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- *  The following cases will be handled by ashr_11
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
- *        n(5~15)          n - 5               10(15 +(n - 5) - n)         ashr_11
- */
-	.p2align 4
-LABEL(ashr_11):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq	$5, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$11, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	11(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_11):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_11)
-
-LABEL(gobble_ashr_11):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$11, %xmm3
-	pslldq	$5, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$11, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_11)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$11, %xmm3
-	pslldq	$5, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$11, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_11)
-
-	.p2align 4
-LABEL(nibble_ashr_11):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0xf800, %edx
-	jnz	LABEL(ashr_11_exittail)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$5, %r11
-	jbe	LABEL(ashr_11_exittail)
-# endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_11)
-
-	.p2align 4
-LABEL(ashr_11_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$11, %xmm0
-	psrldq	$11, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- *  The following cases will be handled by ashr_12
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
- *        n(4~15)          n - 4                11(15 +(n - 4) - n)         ashr_12
- */
-	.p2align 4
-LABEL(ashr_12):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq	$4, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$12, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	12(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_12):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_12)
-
-LABEL(gobble_ashr_12):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$12, %xmm3
-	pslldq	$4, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$12, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_12)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$12, %xmm3
-	pslldq	$4, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$12, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_12)
 
 	.p2align 4
-LABEL(nibble_ashr_12):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0xf000, %edx
-	jnz	LABEL(ashr_12_exittail)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$4, %r11
-	jbe	LABEL(ashr_12_exittail)
-# endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_12)
-
-	.p2align 4
-LABEL(ashr_12_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$12, %xmm0
-	psrldq	$12, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- *  The following cases will be handled by ashr_13
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
- *        n(3~15)          n - 3                12(15 +(n - 3) - n)         ashr_13
- */
-	.p2align 4
-LABEL(ashr_13):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq	$3, %xmm2
-	TOLOWER (%xmm1, %xmm2)
+L(next_48_bytes):
+	movdqu	16(%rdi), %xmm6
+	movdqu	16(%rsi), %xmm3
+	movdqu	32(%rdi), %xmm5
+	pcmpeqb	%xmm6, %xmm3
+	movdqu	32(%rsi), %xmm2
+	pminub	%xmm6, %xmm3
+	pcmpeqb	%xmm1, %xmm3
+	movdqu	48(%rdi), %xmm4
+	pcmpeqb	%xmm5, %xmm2
+	pmovmskb	%xmm3, %edx
+	movdqu	48(%rsi), %xmm0
+	pminub	%xmm5, %xmm2
 	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$13, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	13(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_13):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_13)
-
-LABEL(gobble_ashr_13):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$13, %xmm3
-	pslldq	$3, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$13, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_13)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$13, %xmm3
-	pslldq	$3, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$13, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_13)
-
-	.p2align 4
-LABEL(nibble_ashr_13):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0xe000, %edx
-	jnz	LABEL(ashr_13_exittail)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$3, %r11
-	jbe	LABEL(ashr_13_exittail)
-# endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_13)
-
-	.p2align 4
-LABEL(ashr_13_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq  $13, %xmm0
-	psrldq  $13, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- *  The following cases will be handled by ashr_14
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
- *        n(2~15)          n - 2                13(15 +(n - 2) - n)         ashr_14
- */
-	.p2align 4
-LABEL(ashr_14):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq  $2, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$14, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	14(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_14):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_14)
-
-LABEL(gobble_ashr_14):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$14, %xmm3
-	pslldq	$2, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$14, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_14)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$14, %xmm3
-	pslldq	$2, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$14, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP | defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_14)
-
-	.p2align 4
-LABEL(nibble_ashr_14):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0xc000, %edx
-	jnz	LABEL(ashr_14_exittail)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$2, %r11
-	jbe	LABEL(ashr_14_exittail)
-# endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_14)
-
-	.p2align 4
-LABEL(ashr_14_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$14, %xmm0
-	psrldq	$14, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- *  The following cases will be handled by ashr_15
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
- *        n(1~15)          n - 1                14(15 +(n - 1) - n)         ashr_15
- */
-	.p2align 4
-LABEL(ashr_15):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq	$1, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$15, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	15(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_15):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_15)
-
-LABEL(gobble_ashr_15):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$15, %xmm3
-	pslldq	$1, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$15, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_15)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-# ifndef USE_SSSE3
-	psrldq	$15, %xmm3
-	pslldq	$1, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-# else
-	palignr	$15, %xmm3, %xmm2	/* merge into one 16byte value */
-# endif
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_15)
-
-	.p2align 4
-LABEL(nibble_ashr_15):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0x8000, %edx
-	jnz	LABEL(ashr_15_exittail)
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmpq	$1, %r11
-	jbe	LABEL(ashr_15_exittail)
-# endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_15)
-
-	.p2align 4
-LABEL(ashr_15_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$15, %xmm3
-	psrldq	$15, %xmm0
-
-	.p2align 4
-LABEL(aftertail):
-	TOLOWER (%xmm1, %xmm3)
+	pcmpeqb	%xmm4, %xmm0
+	pmovmskb	%xmm2, %eax
+	salq	$16, %rdx
+	pminub	%xmm4, %xmm0
+	pcmpeqb	%xmm1, %xmm0
+	salq	$32, %rax
+	orq	%rdx, %rax
+	pmovmskb	%xmm0, %ecx
+	movq	%rcx, %rdx
+	salq	$48, %rdx
+	orq	%rdx, %rax
+	jne	L(return)
+L(main_loop_header):
+	leaq	64(%rdi), %rdx
+	movl	$4096, %ecx
+	pxor	%xmm9, %xmm9
+	andq	$-64, %rdx
+	subq	%rdi, %rdx
+	leaq	(%rdi, %rdx), %rax
+	addq	%rsi, %rdx
+	movq	%rdx, %rsi
+	andl	$4095, %esi
+	subq	%rsi, %rcx
+	shrq	$6, %rcx
+	movq	%rcx, %rsi
+	jmp	L(loop_start)
+
+	.p2align 4
+L(loop):
+	addq	$64, %rax
+	addq	$64, %rdx
+L(loop_start):
+	testq	%rsi, %rsi
+	leaq	-1(%rsi), %rsi
+	je	L(loop_cross_page)
+L(back_to_loop):
+	movdqu	(%rdx), %xmm0
+	movdqu	16(%rdx), %xmm1
+	movdqa	(%rax), %xmm2
+	movdqa	16(%rax), %xmm3
+	pcmpeqb	%xmm2, %xmm0
+	movdqu	32(%rdx), %xmm5
 	pcmpeqb	%xmm3, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	not	%edx
-
-	.p2align 4
-LABEL(exit):
-	lea	-16(%r9, %rcx), %rax	/* locate the exact offset for rdi */
-LABEL(less32bytes):
-	lea	(%rdi, %rax), %rdi	/* locate the exact address for first operand(rdi) */
-	lea	(%rsi, %rcx), %rsi	/* locate the exact address for second operand(rsi) */
-	test	%r8d, %r8d
-	jz	LABEL(ret)
-	xchg	%rsi, %rdi		/* recover original order according to flag(%r8d) */
+	pminub	%xmm2, %xmm0
+	movdqu	48(%rdx), %xmm6
+	pminub	%xmm3, %xmm1
+	movdqa	32(%rax), %xmm2
+	pminub	%xmm1, %xmm0
+	movdqa	48(%rax), %xmm3
+	pcmpeqb	%xmm2, %xmm5
+	pcmpeqb	%xmm3, %xmm6
+	pminub	%xmm2, %xmm5
+	pminub	%xmm3, %xmm6
+	pminub	%xmm5, %xmm0
+	pminub	%xmm6, %xmm0
+	pcmpeqb	%xmm7, %xmm0
+	pmovmskb	%xmm0, %ecx
+	testl	%ecx, %ecx
+	je	L(loop)
+	pcmpeqb	%xmm7, %xmm5
+	movdqu	(%rdx), %xmm0
+	pcmpeqb	%xmm7, %xmm1
+	movdqa	(%rax), %xmm2
+	pcmpeqb	%xmm2, %xmm0
+	pminub	%xmm2, %xmm0
+	pcmpeqb	%xmm7, %xmm6
+	pcmpeqb	%xmm7, %xmm0
+	pmovmskb	%xmm1, %ecx
+	pmovmskb	%xmm5, %r8d
+	pmovmskb	%xmm0, %edi
+	salq	$16, %rcx
+	salq	$32, %r8
+	pmovmskb	%xmm6, %esi
+	orq	%r8, %rcx
+	orq	%rdi, %rcx
+	salq	$48, %rsi
+	orq	%rsi, %rcx
+	bsfq	%rcx, %rcx
+	movzbl	(%rax, %rcx), %eax
+	movzbl	(%rdx, %rcx), %edx
+	subl	%edx, %eax
+	ret
 
 	.p2align 4
-LABEL(ret):
-LABEL(less16bytes):
-	bsf	%rdx, %rdx		/* find and store bit index in %rdx */
+L(loop_cross_page):
+	xor	%r10, %r10
+	movq	%rdx, %r9
+	and	$63, %r9
+	subq	%r9, %r10
 
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	%rdx, %r11
-	jbe	LABEL(strcmp_exitz)
-# endif
-	movzbl	(%rsi, %rdx), %ecx
-	movzbl	(%rdi, %rdx), %eax
-
-# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
-	leaq	_nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx
-	movl	(%rdx,%rcx,4), %ecx
-	movl	(%rdx,%rax,4), %eax
-# endif
-
-	sub	%ecx, %eax
-	ret
-
-LABEL(strcmp_exitz):
-	xor	%eax, %eax
+	movdqa	(%rdx, %r10), %xmm0
+	movdqa	16(%rdx, %r10), %xmm1
+	movdqu	(%rax, %r10), %xmm2
+	movdqu	16(%rax, %r10), %xmm3
+	pcmpeqb	%xmm2, %xmm0
+	movdqa	32(%rdx, %r10), %xmm5
+	pcmpeqb	%xmm3, %xmm1
+	pminub	%xmm2, %xmm0
+	movdqa	48(%rdx, %r10), %xmm6
+	pminub	%xmm3, %xmm1
+	movdqu	32(%rax, %r10), %xmm2
+	movdqu	48(%rax, %r10), %xmm3
+	pcmpeqb	%xmm2, %xmm5
+	pcmpeqb	%xmm3, %xmm6
+	pminub	%xmm2, %xmm5
+	pminub	%xmm3, %xmm6
+
+	pcmpeqb	%xmm7, %xmm0
+	pcmpeqb	%xmm7, %xmm1
+	pcmpeqb	%xmm7, %xmm5
+	pcmpeqb	%xmm7, %xmm6
+
+	pmovmskb	%xmm1, %ecx
+	pmovmskb	%xmm5, %r8d
+	pmovmskb	%xmm0, %edi
+	salq	$16, %rcx
+	salq	$32, %r8
+	pmovmskb	%xmm6, %esi
+	orq	%r8, %rdi
+	orq	%rcx, %rdi
+	salq	$48, %rsi
+	orq	%rsi, %rdi
+	movq	%r9, %rcx
+	movq	$63, %rsi
+	shrq	%cl, %rdi
+	test	%rdi, %rdi
+	je	L(back_to_loop)
+	bsfq	%rdi, %rcx
+	movzbl	(%rax, %rcx), %eax
+	movzbl	(%rdx, %rcx), %edx
+	subl	%edx, %eax
 	ret
 
 	.p2align 4
-LABEL(Byte0):
-	movzx	(%rsi), %ecx
-	movzx	(%rdi), %eax
-
-# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
-	leaq	_nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx
-	movl	(%rdx,%rcx,4), %ecx
-	movl	(%rdx,%rax,4), %eax
-# endif
-
-	sub	%ecx, %eax
+L(cross_page_loop):
+	cmpb	%cl, %al
+	jne	L(different)
+	addq	$1, %rdx
+	cmpq	$64, %rdx
+	je	L(main_loop_header)
+L(cross_page):
+	movzbl	(%rdi, %rdx), %eax
+	movzbl	(%rsi, %rdx), %ecx
+	testb	%al, %al
+	jne	L(cross_page_loop)
+	xorl	%eax, %eax
+L(different):
+	subl	%ecx, %eax
 	ret
-END (STRCMP)
-
-	.section .rodata,"a",@progbits
-	.p2align 3
-LABEL(unaligned_table):
-	.int	LABEL(ashr_1) - LABEL(unaligned_table)
-	.int	LABEL(ashr_2) - LABEL(unaligned_table)
-	.int	LABEL(ashr_3) - LABEL(unaligned_table)
-	.int	LABEL(ashr_4) - LABEL(unaligned_table)
-	.int	LABEL(ashr_5) - LABEL(unaligned_table)
-	.int	LABEL(ashr_6) - LABEL(unaligned_table)
-	.int	LABEL(ashr_7) - LABEL(unaligned_table)
-	.int	LABEL(ashr_8) - LABEL(unaligned_table)
-	.int	LABEL(ashr_9) - LABEL(unaligned_table)
-	.int	LABEL(ashr_10) - LABEL(unaligned_table)
-	.int	LABEL(ashr_11) - LABEL(unaligned_table)
-	.int	LABEL(ashr_12) - LABEL(unaligned_table)
-	.int	LABEL(ashr_13) - LABEL(unaligned_table)
-	.int	LABEL(ashr_14) - LABEL(unaligned_table)
-	.int	LABEL(ashr_15) - LABEL(unaligned_table)
-	.int	LABEL(ashr_0) - LABEL(unaligned_table)
-#endif /* !IS_IN (libc) */
-libc_hidden_builtin_def (STRCMP)
+END (strcmp)
+libc_hidden_builtin_def (strcmp)
diff --git a/sysdeps/x86_64/strncase_l.S b/sysdeps/x86_64/strncase_l.S
index c725cd8..47fdcdb 100644
--- a/sysdeps/x86_64/strncase_l.S
+++ b/sysdeps/x86_64/strncase_l.S
@@ -1,6 +1,6 @@
 #define STRCMP __strncasecmp_l
 #define USE_AS_STRNCASECMP_L
-#include "strcmp.S"
+#include "strcmp-sse2-aligned.S"
 
 weak_alias (__strncasecmp_l, strncasecmp_l)
 libc_hidden_def (strncasecmp_l)
diff --git a/sysdeps/x86_64/strncmp.S b/sysdeps/x86_64/strncmp.S
index 0af34e7..1131196 100644
--- a/sysdeps/x86_64/strncmp.S
+++ b/sysdeps/x86_64/strncmp.S
@@ -1,3 +1,3 @@
 #define STRCMP strncmp
 #define USE_AS_STRNCMP
-#include "strcmp.S"
+#include "strcmp-sse2-aligned.S"
-- 
2.4.3
