OpenBLAS/kernel/power/dot.S

/*********************************************************************/
/* 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 N	r3
#define X	r4
#define INCX	r5
#define Y	r6
#define INCY	r7
#define PREA	r8

#define FZERO	f0

#define STACKSIZE 96

	PROLOGUE
	PROFCODE

	addi	SP, SP, -STACKSIZE
	li	r0,   0

	stfd	f14,    0(SP)
	stfd	f15,    8(SP)
	stfd	f16,   16(SP)
	stfd	f17,   24(SP)

	stfd	f18,   32(SP)
	stfd	f19,   40(SP)
	stfd	f20,   48(SP)
	stfd	f21,   56(SP)

	stfd	f22,   64(SP)
	stfd	f23,   72(SP)

	stw	r0,    80(SP)
	lfs	FZERO, 80(SP)

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

	slwi	INCX, INCX, BASE_SHIFT
	slwi	INCY, INCY, BASE_SHIFT

	fmr	f1,  FZERO
	fmr	f2,  FZERO
	fmr	f3,  FZERO
	fmr	f4,  FZERO
	fmr	f5,  FZERO
	fmr	f6,  FZERO
	fmr	f7,  FZERO

#ifdef L1_DUALFETCH
	li	PREA, (L1_PREFETCHSIZE) / 2
#else
	li	PREA, (L1_PREFETCHSIZE)
#endif

	cmpwi	cr0, N, 0
	ble-	cr0, LL(999)

	cmpwi	cr0, INCX, SIZE
	bne	cr0, LL(100)
	cmpwi	cr0, INCY, SIZE
	bne	cr0, LL(100)

	srawi.	r0, N, 4
	mtspr	CTR, r0
	beq-	cr0, LL(50)
	.align 4

	LFD	f8,     0 * SIZE(X)
	LFD	f9,     1 * SIZE(X)
	LFD	f10,    2 * SIZE(X)
	LFD	f11,    3 * SIZE(X)

	LFD	f16,    0 * SIZE(Y)
	LFD	f17,    1 * SIZE(Y)
	LFD	f18,    2 * SIZE(Y)
	LFD	f19,    3 * SIZE(Y)

	LFD	f12,    4 * SIZE(X)
	LFD	f13,    5 * SIZE(X)
	LFD	f14,    6 * SIZE(X)
	LFD	f15,    7 * SIZE(X)

	LFD	f20,    4 * SIZE(Y)
	LFD	f21,    5 * SIZE(Y)
	LFD	f22,    6 * SIZE(Y)
	LFD	f23,    7 * SIZE(Y)
	bdz	LL(20)
	.align 4

LL(10):
	FMADD	f0, f8,  f16, f0
	FMADD	f1, f9,  f17, f1
	FMADD	f2, f10, f18, f2
	FMADD	f3, f11, f19, f3

	LFD	f8,    8 * SIZE(X)
	LFD	f9,    9 * SIZE(X)
	LFD	f10,  10 * SIZE(X)
	LFD	f11,  11 * SIZE(X)

	LFD	f16,   8 * SIZE(Y)
	LFD	f17,   9 * SIZE(Y)
	LFD	f18,  10 * SIZE(Y)
	LFD	f19,  11 * SIZE(Y)

	FMADD	f4,  f12, f20, f4
	FMADD	f5,  f13, f21, f5
	FMADD	f6,  f14, f22, f6
	FMADD	f7,  f15, f23, f7

	LFD	f12,  12 * SIZE(X)
	LFD	f13,  13 * SIZE(X)
	LFD	f14,  14 * SIZE(X)
	LFD	f15,  15 * SIZE(X)

	LFD	f20,  12 * SIZE(Y)
	LFD	f21,  13 * SIZE(Y)
	LFD	f22,  14 * SIZE(Y)
	LFD	f23,  15 * SIZE(Y)

	FMADD	f0,  f8,  f16, f0
	FMADD	f1,  f9,  f17, f1
	FMADD	f2,  f10, f18, f2
	FMADD	f3,  f11, f19, f3

	LFD	f8,   16 * SIZE(X)
	LFD	f9,   17 * SIZE(X)
	LFD	f10,  18 * SIZE(X)
	LFD	f11,  19 * SIZE(X)

	LFD	f16,  16 * SIZE(Y)
	LFD	f17,  17 * SIZE(Y)
	LFD	f18,  18 * SIZE(Y)
	LFD	f19,  19 * SIZE(Y)

	FMADD	f4, f12, f20, f4
	FMADD	f5, f13, f21, f5
	FMADD	f6, f14, f22, f6
	FMADD	f7, f15, f23, f7

	LFD	f12,   20 * SIZE(X)
	LFD	f13,   21 * SIZE(X)
	LFD	f14,   22 * SIZE(X)
	LFD	f15,   23 * SIZE(X)

	LFD	f20,   20 * SIZE(Y)
	LFD	f21,   21 * SIZE(Y)
	LFD	f22,   22 * SIZE(Y)
	LFD	f23,   23 * SIZE(Y)

#ifndef POWER6
	L1_PREFETCH	X, PREA
#ifdef	L1_DUALFETCH
	L1_PREFETCH	Y, PREA
#endif
#endif
	addi	X, X, 16 * SIZE
	addi	Y, Y, 16 * SIZE

#ifdef POWER6
	L1_PREFETCH	X, PREA
#ifdef	L1_DUALFETCH
	L1_PREFETCH	Y, PREA
#endif
#endif
	bdnz	LL(10)
	.align 4

LL(20):
	FMADD	f0, f8,  f16, f0
	FMADD	f1, f9,  f17, f1
	FMADD	f2, f10, f18, f2
	FMADD	f3, f11, f19, f3

	LFD	f8,    8 * SIZE(X)
	LFD	f9,    9 * SIZE(X)
	LFD	f10,  10 * SIZE(X)
	LFD	f11,  11 * SIZE(X)

	LFD	f16,   8 * SIZE(Y)
	LFD	f17,   9 * SIZE(Y)
	LFD	f18,  10 * SIZE(Y)
	LFD	f19,  11 * SIZE(Y)

	FMADD	f4,  f12, f20, f4
	FMADD	f5,  f13, f21, f5
	FMADD	f6,  f14, f22, f6
	FMADD	f7,  f15, f23, f7

	LFD	f12,  12 * SIZE(X)
	LFD	f13,  13 * SIZE(X)
	LFD	f14,  14 * SIZE(X)
	LFD	f15,  15 * SIZE(X)

	LFD	f20,  12 * SIZE(Y)
	LFD	f21,  13 * SIZE(Y)
	LFD	f22,  14 * SIZE(Y)
	LFD	f23,  15 * SIZE(Y)

	FMADD	f0,  f8,  f16, f0
	FMADD	f1,  f9,  f17, f1
	FMADD	f2,  f10, f18, f2
	FMADD	f3,  f11, f19, f3

	FMADD	f4, f12, f20, f4
	FMADD	f5, f13, f21, f5
	FMADD	f6, f14, f22, f6
	FMADD	f7, f15, f23, f7

	addi	X, X, 16 * SIZE
	addi	Y, Y, 16 * SIZE
	.align 4

LL(50):
	andi.	r0,  N, 15
	mtspr	CTR, r0
	beq	LL(999)
	.align 4

LL(60):
	LFD	f8,  0 * SIZE(X)
	LFD	f16, 0 * SIZE(Y)
	addi	X, X,  1 * SIZE
	addi	Y, Y,  1 * SIZE

	FMADD	f0, f8, f16,  f0
	bdnz	LL(60)
	b	LL(999)
	.align 4

LL(100):
#ifdef F_INTERFACE
	cmpwi	cr0, INCX, 0
	bge+	LL(102)

	subi	r0, N, 1
	mullw	r0, r0, INCX
	sub	X, X, r0
	.align 4

LL(102):
	cmpwi	cr0, INCY, 0
	bge+	LL(104)

	subi	r0, N, 1
	mullw	r0, r0, INCY
	sub	Y, Y, r0
	.align 4

LL(104):
#endif
	sub	X, X, INCX
	sub	Y, Y, INCY

	srawi.	r0, N, 4
	mtspr	CTR,  r0
	beq-	LL(150)

	LFDUX	f8,    X, INCX
	LFDUX	f16,   Y, INCY
	LFDUX	f9,    X, INCX
	LFDUX	f17,   Y, INCY

	LFDUX	f10,   X, INCX
	LFDUX	f18,   Y, INCY
	LFDUX	f11,   X, INCX
	LFDUX	f19,   Y, INCY

	LFDUX	f12,   X, INCX
	LFDUX	f20,   Y, INCY
	LFDUX	f13,   X, INCX
	LFDUX	f21,   Y, INCY

	LFDUX	f14,   X, INCX
	LFDUX	f22,   Y, INCY
	LFDUX	f15,   X, INCX
	LFDUX	f23,   Y, INCY
	bdz	LL(120)
	.align 4

LL(110):
	FMADD	f0,  f8,  f16, f0
	FMADD	f1,  f9,  f17, f1
	FMADD	f2,  f10, f18, f2
	FMADD	f3,  f11, f19, f3

	LFDUX	f8,    X, INCX
	LFDUX	f16,   Y, INCY
	LFDUX	f9,    X, INCX
	LFDUX	f17,   Y, INCY

	LFDUX	f10,   X, INCX
	LFDUX	f18,   Y, INCY
	LFDUX	f11,   X, INCX
	LFDUX	f19,   Y, INCY

	FMADD	f4,  f12, f20, f4
	FMADD	f5,  f13, f21, f5
	FMADD	f6,  f14, f22, f6
	FMADD	f7,  f15, f23, f7

	LFDUX	f12,   X, INCX
	LFDUX	f20,   Y, INCY
	LFDUX	f13,   X, INCX
	LFDUX	f21,   Y, INCY

	LFDUX	f14,   X, INCX
	LFDUX	f22,   Y, INCY
	LFDUX	f15,   X, INCX
	LFDUX	f23,   Y, INCY

	FMADD	f0,  f8,  f16, f0
	FMADD	f1,  f9,  f17, f1
	FMADD	f2,  f10, f18, f2
	FMADD	f3,  f11, f19, f3

	LFDUX	f8,    X, INCX
	LFDUX	f16,   Y, INCY
	LFDUX	f9,    X, INCX
	LFDUX	f17,   Y, INCY

	LFDUX	f10,   X, INCX
	LFDUX	f18,   Y, INCY
	LFDUX	f11,   X, INCX
	LFDUX	f19,   Y, INCY

	FMADD	f4,  f12, f20, f4
	FMADD	f5,  f13, f21, f5
	FMADD	f6,  f14, f22, f6
	FMADD	f7,  f15, f23, f7

	LFDUX	f12,   X, INCX
	LFDUX	f20,   Y, INCY
	LFDUX	f13,   X, INCX
	LFDUX	f21,   Y, INCY

	LFDUX	f14,   X, INCX
	LFDUX	f22,   Y, INCY
	LFDUX	f15,   X, INCX
	LFDUX	f23,   Y, INCY

	bdnz	LL(110)
	.align 4

LL(120):
	FMADD	f0,  f8,  f16, f0
	FMADD	f1,  f9,  f17, f1
	FMADD	f2,  f10, f18, f2
	FMADD	f3,  f11, f19, f3

	LFDUX	f8,    X, INCX
	LFDUX	f16,   Y, INCY
	LFDUX	f9,    X, INCX
	LFDUX	f17,   Y, INCY

	LFDUX	f10,   X, INCX
	LFDUX	f18,   Y, INCY
	LFDUX	f11,   X, INCX
	LFDUX	f19,   Y, INCY

	FMADD	f4,  f12, f20, f4
	FMADD	f5,  f13, f21, f5
	FMADD	f6,  f14, f22, f6
	FMADD	f7,  f15, f23, f7

	LFDUX	f12,   X, INCX
	LFDUX	f20,   Y, INCY
	LFDUX	f13,   X, INCX
	LFDUX	f21,   Y, INCY

	LFDUX	f14,   X, INCX
	LFDUX	f22,   Y, INCY
	LFDUX	f15,   X, INCX
	LFDUX	f23,   Y, INCY

	FMADD	f0,  f8,  f16, f0
	FMADD	f1,  f9,  f17, f1
	FMADD	f2,  f10, f18, f2
	FMADD	f3,  f11, f19, f3
	FMADD	f4,  f12, f20, f4
	FMADD	f5,  f13, f21, f5
	FMADD	f6,  f14, f22, f6
	FMADD	f7,  f15, f23, f7
	.align 4

LL(150):
	andi.	r0,  N, 15
	mtspr	CTR, r0
	beq	LL(999)
	.align 4

LL(160):
	LFDUX	f8,    X, INCX
	LFDUX	f16,   Y, INCY
	FMADD	f0,  f8,  f16, f0
	bdnz	LL(160)
	.align 4

LL(999):
	FADD	f0,  f0,  f1
	FADD	f2,  f2,  f3
	FADD	f4,  f4,  f5
	FADD	f6,  f6,  f7

	FADD	f0,  f0,  f2
	FADD	f4,  f4,  f6
	FADD	f1,  f0,  f4

	lfd	f14,    0(SP)
	lfd	f15,    8(SP)
	lfd	f16,   16(SP)
	lfd	f17,   24(SP)

	lfd	f18,   32(SP)
	lfd	f19,   40(SP)
	lfd	f20,   48(SP)
	lfd	f21,   56(SP)

	lfd	f22,   64(SP)
	lfd	f23,   72(SP)

	addi	SP, SP, STACKSIZE
	blr

	EPILOGUE