/*********************************************************************/

/* Copyright 2009, 2010 The University of Texas at Austin.           */

/* All rights reserved.                                              */

/*                                                                   */

/* Redistribution and use in source and binary forms, with or        */

/* without modification, are permitted provided that the following   */

/* conditions are met:                                               */

/*                                                                   */

/*   1. Redistributions of source code must retain the above         */

/*      copyright notice, this list of conditions and the following  */

/*      disclaimer.                                                  */

/*                                                                   */

/*   2. Redistributions in binary form must reproduce the above      */

/*      copyright notice, this list of conditions and the following  */

/*      disclaimer in the documentation and/or other materials       */

/*      provided with the distribution.                              */

/*                                                                   */

/*    THIS  SOFTWARE IS PROVIDED  BY THE  UNIVERSITY OF  TEXAS AT    */

/*    AUSTIN  ``AS IS''  AND ANY  EXPRESS OR  IMPLIED WARRANTIES,    */

/*    INCLUDING, BUT  NOT LIMITED  TO, THE IMPLIED  WARRANTIES OF    */

/*    MERCHANTABILITY  AND FITNESS FOR  A PARTICULAR  PURPOSE ARE    */

/*    DISCLAIMED.  IN  NO EVENT SHALL THE UNIVERSITY  OF TEXAS AT    */

/*    AUSTIN OR CONTRIBUTORS BE  LIABLE FOR ANY DIRECT, INDIRECT,    */

/*    INCIDENTAL,  SPECIAL, EXEMPLARY,  OR  CONSEQUENTIAL DAMAGES    */

/*    (INCLUDING, BUT  NOT LIMITED TO,  PROCUREMENT OF SUBSTITUTE    */

/*    GOODS  OR  SERVICES; LOSS  OF  USE,  DATA,  OR PROFITS;  OR    */

/*    BUSINESS INTERRUPTION) HOWEVER CAUSED  AND ON ANY THEORY OF    */

/*    LIABILITY, WHETHER  IN CONTRACT, STRICT  LIABILITY, OR TORT    */

/*    (INCLUDING NEGLIGENCE OR OTHERWISE)  ARISING IN ANY WAY OUT    */

/*    OF  THE  USE OF  THIS  SOFTWARE,  EVEN  IF ADVISED  OF  THE    */

/*    POSSIBILITY OF SUCH DAMAGE.                                    */

/*                                                                   */

/* The views and conclusions contained in the software and           */

/* documentation are those of the authors and should not be          */

/* interpreted as representing official policies, either expressed   */

/* or implied, of The University of Texas at Austin.                 */

/*********************************************************************/

#define ASSEMBLER

#include "common.h"

#define M	ARG1	/* rdi */

#define X	ARG2	/* rsi */

#define INCX	ARG3	/* rdx */

#define I	%rax

#ifdef USE_MIN

#define maxpd	minpd

#define maxsd	minsd

#endif

#include "l1param.h"

	PROLOGUE

	PROFCODE

	SAVEREGISTERS

	pxor	%xmm0, %xmm0

	testq	M, M

	jle	.L999

	testq	INCX, INCX

	jle	.L999

	salq	$ZBASE_SHIFT, INCX

	pcmpeqb	%xmm15, %xmm15

	psrlq	$1, %xmm15

	movsd	0 * SIZE(X), %xmm0

	movsd	1 * SIZE(X), %xmm1

	addq	INCX, X

	decq	M

	andpd	 %xmm15, %xmm0

	andpd	 %xmm15, %xmm1

	addpd	 %xmm1, %xmm0

	unpcklpd %xmm0, %xmm0

	movapd	 %xmm0, %xmm1

	movapd	 %xmm0, %xmm2

	movapd	 %xmm0, %xmm3

	cmpq	$2 * SIZE, INCX

	jne	.L40

.L30:

	movq	M,  I

	sarq	$3, I

	jle	.L35

	ALIGN_4

.L31:

#ifdef PREFETCH

	PREFETCH (PREFETCHSIZE +  0) - PREOFFSET(X)

#endif

	movsd	0 * SIZE(X), %xmm4

	movsd	1 * SIZE(X), %xmm5

	movhpd	2 * SIZE(X), %xmm4

	movhpd	3 * SIZE(X), %xmm5

	movsd	4 * SIZE(X), %xmm6

	movsd	5 * SIZE(X), %xmm7

	movhpd	6 * SIZE(X), %xmm6

	movhpd	7 * SIZE(X), %xmm7

	andpd	%xmm15, %xmm4

	andpd	%xmm15, %xmm5

	addpd	%xmm5,  %xmm4

	maxpd	%xmm4,  %xmm0

	andpd	%xmm15, %xmm6

	andpd	%xmm15, %xmm7

	addpd	%xmm7,  %xmm6

	maxpd	%xmm6,  %xmm1

#if defined(PREFETCH) && !defined(FETCH128)

	PREFETCH (PREFETCHSIZE +  64) - PREOFFSET(X)

#endif

	movsd	 8 * SIZE(X), %xmm4

	movsd	 9 * SIZE(X), %xmm5

	movhpd	10 * SIZE(X), %xmm4

	movhpd	11 * SIZE(X), %xmm5

	movsd	12 * SIZE(X), %xmm6

	movsd	13 * SIZE(X), %xmm7

	movhpd	14 * SIZE(X), %xmm6

	movhpd	15 * SIZE(X), %xmm7

	andpd	%xmm15, %xmm4

	andpd	%xmm15, %xmm5

	addpd	%xmm5,  %xmm4

	maxpd	%xmm4,  %xmm2

	andpd	%xmm15, %xmm6

	andpd	%xmm15, %xmm7

	addpd	%xmm7,  %xmm6

	maxpd	%xmm6,  %xmm3

	addq	$16 * SIZE, X

	decq	I

	jg	.L31

	ALIGN_4

.L35:

	andq	$7,  M

	jle	.L998

	testq	$4, M

	je	.L36

	movsd	0 * SIZE(X), %xmm4

	movsd	1 * SIZE(X), %xmm5

	movhpd	2 * SIZE(X), %xmm4

	movhpd	3 * SIZE(X), %xmm5

	movsd	4 * SIZE(X), %xmm6

	movsd	5 * SIZE(X), %xmm7

	movhpd	6 * SIZE(X), %xmm6

	movhpd	7 * SIZE(X), %xmm7

	andpd	%xmm15, %xmm4

	andpd	%xmm15, %xmm5

	andpd	%xmm15, %xmm6

	andpd	%xmm15, %xmm7

	addpd	%xmm5,  %xmm4

	addpd	%xmm7,  %xmm6

	maxpd	%xmm4, %xmm0

	maxpd	%xmm6, %xmm1

	addq	$8 * SIZE, X

	ALIGN_3

.L36:

	testq	$2, M

	je	.L37

	movsd	0 * SIZE(X), %xmm4

	movsd	1 * SIZE(X), %xmm5

	movhpd	2 * SIZE(X), %xmm4

	movhpd	3 * SIZE(X), %xmm5

	addq	$4 * SIZE, X

	andpd	%xmm15, %xmm4

	andpd	%xmm15, %xmm5

	addpd	%xmm5,  %xmm4

	maxpd	%xmm4, %xmm0

	ALIGN_3	

.L37:

	testq	$1, M

	je	.L998

	movsd	0 * SIZE(X), %xmm4

	movsd	1 * SIZE(X), %xmm5

	andpd	%xmm15, %xmm4

	andpd	%xmm15, %xmm5

	addpd	%xmm5, %xmm4

	maxsd	%xmm4, %xmm2

	jmp	.L998

	ALIGN_4

.L40:

	movq	M,  I

	sarq	$3, I

	jle	.L45

	ALIGN_4

.L41:

#ifdef PREFETCH

	PREFETCH (PREFETCHSIZE +  0) - PREOFFSET(X)

#endif

	movsd	0 * SIZE(X), %xmm4

	movsd	1 * SIZE(X), %xmm5

	addq	INCX, X

	movhpd	0 * SIZE(X), %xmm4

	movhpd	1 * SIZE(X), %xmm5

	addq	INCX, X

	movsd	0 * SIZE(X), %xmm6

	movsd	1 * SIZE(X), %xmm7

	addq	INCX, X

	movhpd	0 * SIZE(X), %xmm6

	movhpd	1 * SIZE(X), %xmm7

	addq	INCX, X

	andpd	%xmm15, %xmm4

	andpd	%xmm15, %xmm5

	addpd	%xmm5,  %xmm4

	maxpd	%xmm4,  %xmm0

	andpd	%xmm15, %xmm6

	andpd	%xmm15, %xmm7

	addpd	%xmm7,  %xmm6

	maxpd	%xmm6,  %xmm1

#if defined(PREFETCH) && !defined(FETCH128)

	PREFETCH (PREFETCHSIZE +  64) - PREOFFSET(X)

#endif

	movsd	0 * SIZE(X), %xmm4

	movsd	1 * SIZE(X), %xmm5

	addq	INCX, X

	movhpd	0 * SIZE(X), %xmm4

	movhpd	1 * SIZE(X), %xmm5

	addq	INCX, X

	movsd	0 * SIZE(X), %xmm6

	movsd	1 * SIZE(X), %xmm7

	addq	INCX, X

	movhpd	0 * SIZE(X), %xmm6

	movhpd	1 * SIZE(X), %xmm7

	addq	INCX, X

	andpd	%xmm15, %xmm4

	andpd	%xmm15, %xmm5

	addpd	%xmm5,  %xmm4

	maxpd	%xmm4,  %xmm2

	andpd	%xmm15, %xmm6

	andpd	%xmm15, %xmm7

	addpd	%xmm7,  %xmm6

	maxpd	%xmm6,  %xmm3

	decq	I

	jg	.L41

	ALIGN_4

.L45:

	andq	$7,  M

	jle	.L998

	testq	$4, M

	je	.L46

	movsd	0 * SIZE(X), %xmm4

	movsd	1 * SIZE(X), %xmm5

	addq	INCX, X

	movhpd	0 * SIZE(X), %xmm4

	movhpd	1 * SIZE(X), %xmm5

	addq	INCX, X

	movsd	0 * SIZE(X), %xmm6

	movsd	1 * SIZE(X), %xmm7

	addq	INCX, X

	movhpd	0 * SIZE(X), %xmm6

	movhpd	1 * SIZE(X), %xmm7

	addq	INCX, X

	andpd	%xmm15, %xmm4

	andpd	%xmm15, %xmm5

	andpd	%xmm15, %xmm6

	andpd	%xmm15, %xmm7

	addpd	%xmm5, %xmm4

	addpd	%xmm7, %xmm6

	maxpd	%xmm4, %xmm0

	maxpd	%xmm6, %xmm1

	ALIGN_3

.L46:

	testq	$2, M

	je	.L47

	movsd	0 * SIZE(X), %xmm4

	movsd	1 * SIZE(X), %xmm5

	addq	INCX, X

	movhpd	0 * SIZE(X), %xmm4

	movhpd	1 * SIZE(X), %xmm5

	addq	INCX, X

	andpd	%xmm15, %xmm4

	andpd	%xmm15, %xmm5

	addpd	%xmm5, %xmm4

	maxpd	%xmm4, %xmm2

	ALIGN_3	

.L47:

	testq	$1, M

	je	.L998

	movsd	0 * SIZE(X), %xmm4

	movsd	1 * SIZE(X), %xmm5

	andpd	%xmm15, %xmm4

	andpd	%xmm15, %xmm5

	addpd	%xmm5, %xmm4

	maxsd	%xmm4, %xmm3

	jmp	.L998

	ALIGN_4

.L998:

	maxpd	%xmm1, %xmm0

	maxpd	%xmm3, %xmm2

	maxpd	%xmm2, %xmm0

	movapd	%xmm0, %xmm1

	unpckhpd %xmm0, %xmm0

	maxsd	%xmm1, %xmm0

	ALIGN_4

.L999:

	RESTOREREGISTERS

	ret

	EPILOGUE