/* Optimized wcscmp for x86-64 with SSE2.

   Copyright (C) 2011-2018 Free Software Foundation, Inc.

   Contributed by Intel Corporation.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   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/>.  */

#include <sysdep.h>

/* Note: wcscmp uses signed comparison, not unsighed as in strcmp function. */

	.text

ENTRY (__wcscmp)

/*

	* This implementation uses SSE to compare up to 16 bytes at a time.

*/

	mov	%esi, %eax

	mov	%edi, %edx

	pxor	%xmm0, %xmm0		/* clear %xmm0 for null char checks */

	mov	%al, %ch

	mov	%dl, %cl

	and	$63, %eax		/* rsi alignment in cache line */

	and	$63, %edx		/* rdi alignment in cache line */

	and	$15, %cl

	jz	L(continue_00)

	cmp	$16, %edx

	jb	L(continue_0)

	cmp	$32, %edx

	jb	L(continue_16)

	cmp	$48, %edx

	jb	L(continue_32)

L(continue_48):

	and	$15, %ch

	jz	L(continue_48_00)

	cmp	$16, %eax

	jb	L(continue_0_48)

	cmp	$32, %eax

	jb	L(continue_16_48)

	cmp	$48, %eax

	jb	L(continue_32_48)

	.p2align 4

L(continue_48_48):

	mov	(%rsi), %ecx

	cmp	%ecx, (%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	mov	4(%rsi), %ecx

	cmp	%ecx, 4(%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	mov	8(%rsi), %ecx

	cmp	%ecx, 8(%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	mov	12(%rsi), %ecx

	cmp	%ecx, 12(%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	movdqu	16(%rdi), %xmm1

	movdqu	16(%rsi), %xmm2

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_16)

	movdqu	32(%rdi), %xmm1

	movdqu	32(%rsi), %xmm2

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_32)

	movdqu	48(%rdi), %xmm1

	movdqu	48(%rsi), %xmm2

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_48)

	add	$64, %rsi

	add	$64, %rdi

	jmp	L(continue_48_48)

L(continue_0):

	and	$15, %ch

	jz	L(continue_0_00)

	cmp	$16, %eax

	jb	L(continue_0_0)

	cmp	$32, %eax

	jb	L(continue_0_16)

	cmp	$48, %eax

	jb	L(continue_0_32)

	.p2align 4

L(continue_0_48):

	mov	(%rsi), %ecx

	cmp	%ecx, (%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	mov	4(%rsi), %ecx

	cmp	%ecx, 4(%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	mov	8(%rsi), %ecx

	cmp	%ecx, 8(%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	mov	12(%rsi), %ecx

	cmp	%ecx, 12(%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	movdqu	16(%rdi), %xmm1

	movdqu	16(%rsi), %xmm2

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_16)

	movdqu	32(%rdi), %xmm1

	movdqu	32(%rsi), %xmm2

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_32)

	mov	48(%rsi), %ecx

	cmp	%ecx, 48(%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	mov	52(%rsi), %ecx

	cmp	%ecx, 52(%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	mov	56(%rsi), %ecx

	cmp	%ecx, 56(%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	mov	60(%rsi), %ecx

	cmp	%ecx, 60(%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	add	$64, %rsi

	add	$64, %rdi

	jmp	L(continue_0_48)

	.p2align 4

L(continue_00):

	and	$15, %ch

	jz	L(continue_00_00)

	cmp	$16, %eax

	jb	L(continue_00_0)

	cmp	$32, %eax

	jb	L(continue_00_16)

	cmp	$48, %eax

	jb	L(continue_00_32)

	.p2align 4

L(continue_00_48):

	pcmpeqd	(%rdi), %xmm0

	mov	(%rdi), %eax

	pmovmskb %xmm0, %ecx

	test	%ecx, %ecx

	jnz	L(less4_double_words1)

	cmp	(%rsi), %eax

	jne	L(nequal)

	mov	4(%rdi), %eax

	cmp	4(%rsi), %eax

	jne	L(nequal)

	mov	8(%rdi), %eax

	cmp	8(%rsi), %eax

	jne	L(nequal)

	mov	12(%rdi), %eax

	cmp	12(%rsi), %eax

	jne	L(nequal)

	movdqu	16(%rsi), %xmm2

	pcmpeqd	%xmm2, %xmm0		/* Any null double_word? */

	pcmpeqd	16(%rdi), %xmm2		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/

	pmovmskb %xmm2, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_16)

	movdqu	32(%rsi), %xmm2

	pcmpeqd	%xmm2, %xmm0		/* Any null double_word? */

	pcmpeqd	32(%rdi), %xmm2		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/

	pmovmskb %xmm2, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_32)

	movdqu	48(%rsi), %xmm2

	pcmpeqd	%xmm2, %xmm0		/* Any null double_word? */

	pcmpeqd	48(%rdi), %xmm2		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/

	pmovmskb %xmm2, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_48)

	add	$64, %rsi

	add	$64, %rdi

	jmp	L(continue_00_48)

	.p2align 4

L(continue_32):

	and	$15, %ch

	jz	L(continue_32_00)

	cmp	$16, %eax

	jb	L(continue_0_32)

	cmp	$32, %eax

	jb	L(continue_16_32)

	cmp	$48, %eax

	jb	L(continue_32_32)

	.p2align 4

L(continue_32_48):

	mov	(%rsi), %ecx

	cmp	%ecx, (%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	mov	4(%rsi), %ecx

	cmp	%ecx, 4(%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	mov	8(%rsi), %ecx

	cmp	%ecx, 8(%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	mov	12(%rsi), %ecx

	cmp	%ecx, 12(%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	mov	16(%rsi), %ecx

	cmp	%ecx, 16(%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	mov	20(%rsi), %ecx

	cmp	%ecx, 20(%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	mov	24(%rsi), %ecx

	cmp	%ecx, 24(%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	mov	28(%rsi), %ecx

	cmp	%ecx, 28(%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	movdqu	32(%rdi), %xmm1

	movdqu	32(%rsi), %xmm2

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_32)

	movdqu	48(%rdi), %xmm1

	movdqu	48(%rsi), %xmm2

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_48)

	add	$64, %rsi

	add	$64, %rdi

	jmp	L(continue_32_48)

	.p2align 4

L(continue_16):

	and	$15, %ch

	jz	L(continue_16_00)

	cmp	$16, %eax

	jb	L(continue_0_16)

	cmp	$32, %eax

	jb	L(continue_16_16)

	cmp	$48, %eax

	jb	L(continue_16_32)

	.p2align 4

L(continue_16_48):

	mov	(%rsi), %ecx

	cmp	%ecx, (%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	mov	4(%rsi), %ecx

	cmp	%ecx, 4(%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	mov	8(%rsi), %ecx

	cmp	%ecx, 8(%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	mov	12(%rsi), %ecx

	cmp	%ecx, 12(%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	movdqu	16(%rdi), %xmm1

	movdqu	16(%rsi), %xmm2

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_16)

	mov	32(%rsi), %ecx

	cmp	%ecx, 32(%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	mov	36(%rsi), %ecx

	cmp	%ecx, 36(%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	mov	40(%rsi), %ecx

	cmp	%ecx, 40(%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	mov	44(%rsi), %ecx

	cmp	%ecx, 44(%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	movdqu	48(%rdi), %xmm1

	movdqu	48(%rsi), %xmm2

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_48)

	add	$64, %rsi

	add	$64, %rdi

	jmp	L(continue_16_48)

	.p2align 4

L(continue_00_00):

	movdqa	(%rdi), %xmm1

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	(%rsi), %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words)

	movdqa	16(%rdi), %xmm3

	pcmpeqd	%xmm3, %xmm0		/* Any null double_word? */

	pcmpeqd	16(%rsi), %xmm3		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm3		/* packed sub of comparison results*/

	pmovmskb %xmm3, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_16)

	movdqa	32(%rdi), %xmm5

	pcmpeqd	%xmm5, %xmm0		/* Any null double_word? */

	pcmpeqd	32(%rsi), %xmm5		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm5		/* packed sub of comparison results*/

	pmovmskb %xmm5, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_32)

	movdqa	48(%rdi), %xmm1

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	48(%rsi), %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_48)

	add	$64, %rsi

	add	$64, %rdi

	jmp	L(continue_00_00)

	.p2align 4

L(continue_00_32):

	movdqu	(%rsi), %xmm2

	pcmpeqd	%xmm2, %xmm0		/* Any null double_word? */

	pcmpeqd	(%rdi), %xmm2		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/

	pmovmskb %xmm2, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words)

	add	$16, %rsi

	add	$16, %rdi

	jmp	L(continue_00_48)

	.p2align 4

L(continue_00_16):

	movdqu	(%rsi), %xmm2

	pcmpeqd	%xmm2, %xmm0		/* Any null double_word? */

	pcmpeqd	(%rdi), %xmm2		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/

	pmovmskb %xmm2, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words)

	movdqu	16(%rsi), %xmm2

	pcmpeqd	%xmm2, %xmm0		/* Any null double_word? */

	pcmpeqd	16(%rdi), %xmm2		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/

	pmovmskb %xmm2, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_16)

	add	$32, %rsi

	add	$32, %rdi

	jmp	L(continue_00_48)

	.p2align 4

L(continue_00_0):

	movdqu	(%rsi), %xmm2

	pcmpeqd	%xmm2, %xmm0		/* Any null double_word? */

	pcmpeqd	(%rdi), %xmm2		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/

	pmovmskb %xmm2, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words)

	movdqu	16(%rsi), %xmm2

	pcmpeqd	%xmm2, %xmm0		/* Any null double_word? */

	pcmpeqd	16(%rdi), %xmm2		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/

	pmovmskb %xmm2, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_16)

	movdqu	32(%rsi), %xmm2

	pcmpeqd	%xmm2, %xmm0		/* Any null double_word? */

	pcmpeqd	32(%rdi), %xmm2		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/

	pmovmskb %xmm2, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_32)

	add	$48, %rsi

	add	$48, %rdi

	jmp	L(continue_00_48)

	.p2align 4

L(continue_48_00):

	pcmpeqd	(%rsi), %xmm0

	mov	(%rdi), %eax

	pmovmskb %xmm0, %ecx

	test	%ecx, %ecx

	jnz	L(less4_double_words1)

	cmp	(%rsi), %eax

	jne	L(nequal)

	mov	4(%rdi), %eax

	cmp	4(%rsi), %eax

	jne	L(nequal)

	mov	8(%rdi), %eax

	cmp	8(%rsi), %eax

	jne	L(nequal)

	mov	12(%rdi), %eax

	cmp	12(%rsi), %eax

	jne	L(nequal)

	movdqu	16(%rdi), %xmm1

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	16(%rsi), %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_16)

	movdqu	32(%rdi), %xmm1

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	32(%rsi), %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_32)

	movdqu	48(%rdi), %xmm1

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	48(%rsi), %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_48)

	add	$64, %rsi

	add	$64, %rdi

	jmp	L(continue_48_00)

	.p2align 4

L(continue_32_00):

	movdqu	(%rdi), %xmm1

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	(%rsi), %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words)

	add	$16, %rsi

	add	$16, %rdi

	jmp	L(continue_48_00)

	.p2align 4

L(continue_16_00):

	movdqu	(%rdi), %xmm1

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	(%rsi), %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words)

	movdqu	16(%rdi), %xmm1

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	16(%rsi), %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_16)

	add	$32, %rsi

	add	$32, %rdi

	jmp	L(continue_48_00)

	.p2align 4

L(continue_0_00):

	movdqu	(%rdi), %xmm1

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	(%rsi), %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words)

	movdqu	16(%rdi), %xmm1

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	16(%rsi), %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_16)

	movdqu	32(%rdi), %xmm1

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	32(%rsi), %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_32)

	add	$48, %rsi

	add	$48, %rdi

	jmp	L(continue_48_00)

	.p2align 4

L(continue_32_32):

	movdqu	(%rdi), %xmm1

	movdqu	(%rsi), %xmm2

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words)

	add	$16, %rsi

	add	$16, %rdi

	jmp	L(continue_48_48)

	.p2align 4

L(continue_16_16):

	movdqu	(%rdi), %xmm1

	movdqu	(%rsi), %xmm2

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words)

	movdqu	16(%rdi), %xmm3

	movdqu	16(%rsi), %xmm4

	pcmpeqd	%xmm3, %xmm0		/* Any null double_word? */

	pcmpeqd	%xmm4, %xmm3		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm3		/* packed sub of comparison results*/

	pmovmskb %xmm3, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_16)

	add	$32, %rsi

	add	$32, %rdi

	jmp	L(continue_48_48)

	.p2align 4

L(continue_0_0):

	movdqu	(%rdi), %xmm1

	movdqu	(%rsi), %xmm2

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words)

	movdqu	16(%rdi), %xmm3

	movdqu	16(%rsi), %xmm4

	pcmpeqd	%xmm3, %xmm0		/* Any null double_word? */

	pcmpeqd	%xmm4, %xmm3		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm3		/* packed sub of comparison results*/

	pmovmskb %xmm3, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_16)

	movdqu	32(%rdi), %xmm1

	movdqu	32(%rsi), %xmm2

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_32)

	add	$48, %rsi

	add	$48, %rdi

	jmp	L(continue_48_48)

	.p2align 4

L(continue_0_16):

	movdqu	(%rdi), %xmm1

	movdqu	(%rsi), %xmm2

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words)

	movdqu	16(%rdi), %xmm1

	movdqu	16(%rsi), %xmm2

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words_16)

	add	$32, %rsi

	add	$32, %rdi

	jmp	L(continue_32_48)

	.p2align 4

L(continue_0_32):

	movdqu	(%rdi), %xmm1

	movdqu	(%rsi), %xmm2

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words)

	add	$16, %rsi

	add	$16, %rdi

	jmp	L(continue_16_48)

	.p2align 4

L(continue_16_32):

	movdqu	(%rdi), %xmm1

	movdqu	(%rsi), %xmm2

	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */

	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */

	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/

	pmovmskb %xmm1, %edx

	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */

	jnz	L(less4_double_words)

	add	$16, %rsi

	add	$16, %rdi

	jmp	L(continue_32_48)

	.p2align 4

L(less4_double_words1):

	cmp	(%rsi), %eax

	jne	L(nequal)

	test	%eax, %eax

	jz	L(equal)

	mov	4(%rsi), %ecx

	cmp	%ecx, 4(%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	mov	8(%rsi), %ecx

	cmp	%ecx, 8(%rdi)

	jne	L(nequal)

	test	%ecx, %ecx

	jz	L(equal)

	mov	12(%rsi), %ecx

	cmp	%ecx, 12(%rdi)

	jne	L(nequal)

	xor	%eax, %eax

	ret

	.p2align 4

L(less4_double_words):

	xor	%eax, %eax

	test	%dl, %dl

	jz	L(next_two_double_words)

	and	$15, %dl

	jz	L(second_double_word)

	mov	(%rdi), %eax

	cmp	(%rsi), %eax

	jne	L(nequal)

	ret

	.p2align 4

L(second_double_word):

	mov	4(%rdi), %eax

	cmp	4(%rsi), %eax

	jne	L(nequal)

	ret

	.p2align 4

L(next_two_double_words):

	and	$15, %dh

	jz	L(fourth_double_word)

	mov	8(%rdi), %eax

	cmp	8(%rsi), %eax

	jne	L(nequal)

	ret

	.p2align 4

L(fourth_double_word):

	mov	12(%rdi), %eax

	cmp	12(%rsi), %eax

	jne	L(nequal)

	ret

	.p2align 4

L(less4_double_words_16):

	xor	%eax, %eax

	test	%dl, %dl

	jz	L(next_two_double_words_16)

	and	$15, %dl

	jz	L(second_double_word_16)

	mov	16(%rdi), %eax

	cmp	16(%rsi), %eax

	jne	L(nequal)

	ret

	.p2align 4

L(second_double_word_16):

	mov	20(%rdi), %eax

	cmp	20(%rsi), %eax

	jne	L(nequal)

	ret

	.p2align 4

L(next_two_double_words_16):

	and	$15, %dh

	jz	L(fourth_double_word_16)

	mov	24(%rdi), %eax

	cmp	24(%rsi), %eax

	jne	L(nequal)

	ret

	.p2align 4

L(fourth_double_word_16):

	mov	28(%rdi), %eax

	cmp	28(%rsi), %eax

	jne	L(nequal)

	ret

	.p2align 4

L(less4_double_words_32):

	xor	%eax, %eax

	test	%dl, %dl

	jz	L(next_two_double_words_32)

	and	$15, %dl

	jz	L(second_double_word_32)

	mov	32(%rdi), %eax

	cmp	32(%rsi), %eax

	jne	L(nequal)

	ret

	.p2align 4

L(second_double_word_32):

	mov	36(%rdi), %eax

	cmp	36(%rsi), %eax

	jne	L(nequal)