OpenBLAS/kernel/mips64/zsum.S

/*********************************************************************/
/* Copyright 2009, 2010 The University of Texas at Austin.           */
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/* without modification, are permitted provided that the following   */
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/*   2. Redistributions in binary form must reproduce the above      */
/*      copyright notice, this list of conditions and the following  */
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/*    THIS  SOFTWARE IS PROVIDED  BY THE  UNIVERSITY OF  TEXAS AT    */
/*    AUSTIN  ``AS IS''  AND ANY  EXPRESS OR  IMPLIED WARRANTIES,    */
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/* interpreted as representing official policies, either expressed   */
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/*********************************************************************/

#define ASSEMBLER
#include "common.h"

#define N	$4
#define	X	$5
#define INCX	$6

#define I	$2
#define TEMP	$3

#define a1	$f2
#define a2	$f3
#define a3	$f4
#define a4	$f5
#define a5	$f6
#define a6	$f7
#define a7	$f8
#define a8	$f9

#define t1	$f10
#define t2	$f11
#define t3	$f12
#define t4	$f13

#define s1	$f0
#define s2	$f1

	PROLOGUE

#ifdef F_INTERFACE
	LDINT	N,     0(N)
	LDINT	INCX,  0(INCX)
#endif

	MTC	$0,  s1

	MTC	$0,  s2
	blez    INCX, .L999
	dsll	INCX, INCX, ZBASE_SHIFT

	blez	N, .L999
	dsra	I, N, 2

	blez	I, .L25
	NOP

	LD	a1,  0 * SIZE(X)
	LD	a2,  1 * SIZE(X)
	daddu	X, X, INCX

	LD	a3,  0 * SIZE(X)
	LD	a4,  1 * SIZE(X)
	daddu	X, X, INCX

	LD	a5,  0 * SIZE(X)
	LD	a6,  1 * SIZE(X)
	daddu	X, X, INCX

	MOV	t1, a1
	MOV	t2, a2

	LD	a7,  0 * SIZE(X)
	LD	a8,  1 * SIZE(X)

	MOV	t3, a3
	MOV	t4, a4
	daddiu	I, I, -1

	blez	I, .L24
	daddu	X, X, INCX
	.align 3

.L23:
	ADD	s1, s1, t1
	LD	a1,  0 * SIZE(X)

	MOV	t1, a5
	daddiu	I, I, -1

	ADD	s2, s2, t2
	LD	a2,  1 * SIZE(X)

	MOV	t2, a6
	daddu	X, X, INCX

	ADD	s1, s1, t3
	LD	a3,  0 * SIZE(X)

	MOV	t3, a7
	NOP

	ADD	s2, s2, t4
	LD	a4,  1 * SIZE(X)

	MOV	t4, a8
	daddu	X, X, INCX

	ADD	s1, s1, t1
	LD	a5,  0 * SIZE(X)

	MOV	t1, a1
	NOP

	ADD	s2, s2, t2
	LD	a6,  1 * SIZE(X)

	MOV	t2, a2
	daddu	X, X, INCX

	ADD	s1, s1, t3
	LD	a7,  0 * SIZE(X)

	MOV	t3, a3
	LD	a8,  1 * SIZE(X)

	ADD	s2, s2, t4
	daddu	X, X, INCX

	bgtz	I, .L23
	MOV	t4, a4
	.align 3

.L24:
	ADD	s1, s1, t1
	MOV	t1, a5

	ADD	s2, s2, t2
	MOV	t2, a6

	ADD	s1, s1, t3
	MOV	t3, a7

	ADD	s2, s2, t4
	MOV	t4, a8

	ADD	s1, s1, t1
	ADD	s2, s2, t2
	ADD	s1, s1, t3
	ADD	s2, s2, t4
	.align 3

.L25:
	andi	I,  N, 3

	blez	I, .L999
	NOP
	.align	3

.L26:
	LD	a1,  0 * SIZE(X)
	LD	a2,  1 * SIZE(X)

	MOV	t1, a1
	daddiu	I, I, -1
	MOV	t2, a2
	daddu	X, X, INCX

	ADD	s1, s1, t1
	bgtz	I, .L26
	ADD	s2, s2, t2
	.align 3

.L999:
	j	$31
	ADD	s1, s1, s2

	EPILOGUE