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

/* 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 maxsd	minsd

#endif

#include "l1param.h"

	PROLOGUE

	PROFCODE

	SAVEREGISTERS

	xorps	%xmm0, %xmm0

	leaq	(, INCX, SIZE), INCX

	testq	M, M

	jle	.L999

	testq	INCX, INCX

	jle	.L999

#ifdef USE_ABS

	pcmpeqb	%xmm15, %xmm15

	psrlq	$1, %xmm15

#endif

	movsd	(X), %xmm0

	addq	INCX, X

#ifdef USE_ABS

	andps	 %xmm15, %xmm0

#endif

	decq	M

	jle	.L999

	movaps	 %xmm0, %xmm1

	movaps	 %xmm0, %xmm2

	movaps	 %xmm0, %xmm3

	cmpq	$SIZE, INCX

	jne	.L20

	movq	M,  I

	sarq	$3, I

	jle	.L15

	movsd	0 * SIZE(X), %xmm4

	movsd	1 * SIZE(X), %xmm5

	movsd	2 * SIZE(X), %xmm6

	movsd	3 * SIZE(X), %xmm7

	movsd	4 * SIZE(X), %xmm8

	movsd	5 * SIZE(X), %xmm9

	movsd	6 * SIZE(X), %xmm10

	movsd	7 * SIZE(X), %xmm11

	decq	I

	jle	.L13

	ALIGN_4

.L12:

#ifdef PREFETCH

	PREFETCH (PREFETCHSIZE +  0) - PREOFFSET(X)

#endif

#ifdef USE_ABS

	andps	%xmm15, %xmm4

#endif

	maxsd	%xmm4,  %xmm1

	movsd	 8 * SIZE(X), %xmm4

#ifdef USE_ABS

	andps	%xmm15, %xmm5

#endif

	maxsd	%xmm5,  %xmm2

	movsd	 9 * SIZE(X), %xmm5

#ifdef USE_ABS

	andps	%xmm15, %xmm6

#endif

	maxsd	%xmm6,  %xmm1

	movsd	10 * SIZE(X), %xmm6

#ifdef USE_ABS

	andps	%xmm15, %xmm7

#endif

	maxsd	%xmm7,  %xmm2

	movsd	11 * SIZE(X), %xmm7

#ifdef USE_ABS

	andps	%xmm15, %xmm8

#endif

	maxsd	%xmm8,  %xmm1

	movsd	12 * SIZE(X), %xmm8

#ifdef USE_ABS

	andps	%xmm15, %xmm9

#endif

	maxsd	%xmm9,  %xmm2

	movsd	13 * SIZE(X), %xmm9

#ifdef USE_ABS

	andps	%xmm15, %xmm10

#endif

	maxsd	%xmm10, %xmm1

	movsd	14 * SIZE(X), %xmm10

#ifdef USE_ABS

	andps	%xmm15, %xmm11

#endif

	maxsd	%xmm11, %xmm2

	movsd	15 * SIZE(X), %xmm11

	addq	$8 * SIZE, X

	decq	I

	jg	.L12

	ALIGN_4

.L13:

#ifdef USE_ABS

	andps	%xmm15, %xmm4

#endif

	maxsd	%xmm4,  %xmm0

#ifdef USE_ABS

	andps	%xmm15, %xmm5

#endif

	maxsd	%xmm5,  %xmm1

#ifdef USE_ABS

	andps	%xmm15, %xmm6

#endif

	maxsd	%xmm6,  %xmm2

#ifdef USE_ABS

	andps	%xmm15, %xmm7

#endif

	maxsd	%xmm7,  %xmm3

#ifdef USE_ABS

	andps	%xmm15, %xmm8

#endif

	maxsd	%xmm8,  %xmm0

#ifdef USE_ABS

	andps	%xmm15, %xmm9

#endif

	maxsd	%xmm9,  %xmm1

#ifdef USE_ABS

	andps	%xmm15, %xmm10

#endif

	maxsd	%xmm10, %xmm2

#ifdef USE_ABS

	andps	%xmm15, %xmm11

#endif

	maxsd	%xmm11, %xmm3

	addq	$8 * SIZE, X

	ALIGN_4

.L15:

	testq	$4, M

	jle	.L17

	movsd	0 * SIZE(X), %xmm4

	movsd	1 * SIZE(X), %xmm5

	movsd	2 * SIZE(X), %xmm6

	movsd	3 * SIZE(X), %xmm7

#ifdef USE_ABS

	andps	%xmm15, %xmm4

#endif

	maxsd	%xmm4,  %xmm0

#ifdef USE_ABS

	andps	%xmm15, %xmm5

#endif

	maxsd	%xmm5,  %xmm1

#ifdef USE_ABS

	andps	%xmm15, %xmm6

#endif

	maxsd	%xmm6,  %xmm2

#ifdef USE_ABS

	andps	%xmm15, %xmm7

#endif

	maxsd	%xmm7,  %xmm3

	addq	$4 * SIZE, X

	ALIGN_3	

.L17:

	testq	$2, M

	jle	.L18

	movsd	0 * SIZE(X), %xmm4

	movsd	1 * SIZE(X), %xmm5

#ifdef USE_ABS

	andps	 %xmm15, %xmm4

#endif

	maxsd	%xmm4, %xmm1

#ifdef USE_ABS

	andps	 %xmm15, %xmm5

#endif

	maxsd	%xmm5, %xmm2

	addq	$2 * SIZE, X

	ALIGN_3

.L18:

	testq	$1, M

	jle	.L998

	movsd	0 * SIZE(X), %xmm4

#ifdef USE_ABS

	andps	 %xmm15, %xmm4

#endif

	maxsd	%xmm4, %xmm3

	jmp	.L998

	ALIGN_3

.L20:

	movq	M,  I

	sarq	$3, I

	jle	.L25

	movsd	(X), %xmm4

	addq	INCX, X

	movsd	(X), %xmm5

	addq	INCX, X

	movsd	(X), %xmm6

	addq	INCX, X

	movsd	(X), %xmm7

	addq	INCX, X

	movsd	(X), %xmm8

	addq	INCX, X

	movsd	(X), %xmm9

	addq	INCX, X

	movsd	(X), %xmm10

	addq	INCX, X

	movsd	(X), %xmm11

	decq	I

	jle	.L23

	ALIGN_4

.L22:

#ifdef USE_ABS

	andps	%xmm15, %xmm4

#endif

	addq	INCX, X

	maxsd	%xmm4,  %xmm1

	movsd	(X), %xmm4

#ifdef USE_ABS

	andps	%xmm15, %xmm5

#endif

	addq	INCX, X

	maxsd	%xmm5,  %xmm2

	movsd	(X), %xmm5

#ifdef USE_ABS

	andps	%xmm15, %xmm6

#endif

	addq	INCX, X

	maxsd	%xmm6,  %xmm1

	movsd	(X), %xmm6

#ifdef USE_ABS

	andps	%xmm15, %xmm7

#endif

	addq	INCX, X

	maxsd	%xmm7,  %xmm2

	movsd	(X), %xmm7

#ifdef USE_ABS

	andps	%xmm15, %xmm8

#endif

	addq	INCX, X

	maxsd	%xmm8,  %xmm1

	movsd	(X), %xmm8

#ifdef USE_ABS

	andps	%xmm15, %xmm9

#endif

	addq	INCX, X

	maxsd	%xmm9,  %xmm2

	movsd	(X), %xmm9

#ifdef USE_ABS

	andps	%xmm15, %xmm10

#endif

	addq	INCX, X

	maxsd	%xmm10, %xmm1

	movsd	(X), %xmm10

#ifdef USE_ABS

	andps	%xmm15, %xmm11

#endif

	addq	INCX, X

	maxsd	%xmm11, %xmm2

	movsd	(X), %xmm11

	decq	I

	jg	.L22

	ALIGN_4

.L23:

#ifdef USE_ABS

	andps	%xmm15, %xmm4

#endif

	addq	INCX, X

	maxsd	%xmm4,  %xmm0

#ifdef USE_ABS

	andps	%xmm15, %xmm5

#endif

	maxsd	%xmm5,  %xmm1

#ifdef USE_ABS

	andps	%xmm15, %xmm6

#endif

	maxsd	%xmm6,  %xmm2

#ifdef USE_ABS

	andps	%xmm15, %xmm7

#endif

	maxsd	%xmm7,  %xmm3

#ifdef USE_ABS

	andps	%xmm15, %xmm8

#endif

	maxsd	%xmm8,  %xmm0

#ifdef USE_ABS

	andps	%xmm15, %xmm9

#endif

	maxsd	%xmm9,  %xmm1

#ifdef USE_ABS

	andps	%xmm15, %xmm10

#endif

	maxsd	%xmm10, %xmm2

#ifdef USE_ABS

	andps	%xmm15, %xmm11

#endif

	maxsd	%xmm11, %xmm3

	ALIGN_4

.L25:

	testq	$4, M

	jle	.L27

	movsd	(X), %xmm4

	addq	INCX, X

	movsd	(X), %xmm5

	addq	INCX, X

	movsd	(X), %xmm6

	addq	INCX, X

	movsd	(X), %xmm7

	addq	INCX, X

#ifdef USE_ABS

	andps	%xmm15, %xmm4

#endif

	maxsd	%xmm4,  %xmm0

#ifdef USE_ABS

	andps	%xmm15, %xmm5

#endif

	maxsd	%xmm5,  %xmm1

#ifdef USE_ABS

	andps	%xmm15, %xmm6

#endif

	maxsd	%xmm6,  %xmm2

#ifdef USE_ABS

	andps	%xmm15, %xmm7

#endif

	maxsd	%xmm7,  %xmm3

	ALIGN_3	

.L27:

	testq	$2, M

	jle	.L28

	movsd	(X), %xmm4

	addq	INCX, X

	movsd	(X), %xmm5

	addq	INCX, X

#ifdef USE_ABS

	andps	 %xmm15, %xmm4

#endif

	maxsd	%xmm4, %xmm1

#ifdef USE_ABS

	andps	 %xmm15, %xmm5

#endif

	maxsd	%xmm5, %xmm2

	ALIGN_3

.L28:

	testq	$1, M

	jle	.L998

	movsd	(X), %xmm4

	addq	INCX, X

#ifdef USE_ABS

	andps	 %xmm15, %xmm4

#endif

	maxsd	%xmm4, %xmm3

	ALIGN_3

.L998:

	maxsd	%xmm1, %xmm0

	maxsd	%xmm3, %xmm2

	maxsd	%xmm2, %xmm0

	ALIGN_4

.L999:

	RESTOREREGISTERS

	ret

	EPILOGUE