gemv_t_sse2.s

Optimized GotoBLAS libraries

/*********************************************************************/
/*                                                                   */
/*             Optimized BLAS libraries                              */
/*                     By Kazushige Goto <[e-mail]>     */
/*                                                                   */
/* Copyright (c) The University of Texas, 2005. All rights reserved. */
/* UNIVERSITY EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES CONCERNING  */
/* THIS SOFTWARE AND DOCUMENTATION, INCLUDING ANY WARRANTIES OF      */
/* MERCHANTABILITY, FITNESS FOR ANY PARTICULAR PURPOSE,              */
/* NON-INFRINGEMENT AND WARRANTIES OF PERFORMANCE, AND ANY WARRANTY  */
/* THAT MIGHT OTHERWISE ARISE FROM COURSE OF DEALING OR USAGE OF     */
/* TRADE. NO WARRANTY IS EITHER EXPRESS OR IMPLIED WITH RESPECT TO   */
/* THE USE OF THE SOFTWARE OR DOCUMENTATION.                         */
/* Under no circumstances shall University be liable for incidental, */
/* special, indirect, direct or consequential damages or loss of     */
/* profits, interruption of business, or related expenses which may  */
/* arise from use of Software or Documentation, including but not    */
/* limited to those resulting from defects in Software and/or        */
/* Documentation, or loss or inaccuracy of data of any kind.         */
/*********************************************************************/

#define ASSEMBLER
#include "common.h"

#define P 8192

#ifdef PENTIUM4
#define PREFETCH	prefetchnta
#define PREFETCHW	prefetchnta
#define PREFETCHSIZE	32
#endif

#ifdef CORE2
#define PREFETCH	prefetcht0
#define PREFETCHW	prefetcht0
#define PREFETCHSIZE	(8 * 5)
#endif

#ifdef PENRYN
#define PREFETCH	prefetcht0
#define PREFETCHW	prefetcht0
#define PREFETCHSIZE	(8 * 5)
#endif

#ifdef GENERIC
#define PREFETCH	prefetcht0
#define PREFETCHW	prefetcht0
#define PREFETCHSIZE	(8 * 5)
#endif

#define STACKSIZE	128
	
#define OLD_INCX	  8 + STACKSIZE(%rsp)
#define OLD_Y		 16 + STACKSIZE(%rsp)
#define OLD_INCY	 24 + STACKSIZE(%rsp)
#define BUFFER		 32 + STACKSIZE(%rsp)
	
#define NLDA	         48(%rsp)
#define J	         56(%rsp)

#define M	  %rdi
#define N	  %rsi
#define A	  %rcx
#define LDA	  %r8
#define X	  %r9
#define INCX	  %rdx
#define Y	  %rbp
#define INCY	  %r10

#define TEMP  %rax
#define I     %rax
#define MIN_M %rbx
#define IS    %r11
#define AO1   %r12
#define AO2   %r13
#define AO3   %rdi
#define AO4   %r11
#define BO    %r14
#define CO    %r15

#define ALPHA %xmm15
	
#ifdef OPTERON
#define movsd movlpd
#endif

	PROLOGUE
	PROFCODE

	subq	$STACKSIZE, %rsp
	movq	%rbx,  0(%rsp)
	movq	%rbp,  8(%rsp)
	movq	%r12, 16(%rsp)
	movq	%r13, 24(%rsp)
	movq	%r14, 32(%rsp)
	movq	%r15, 40(%rsp)

	movq	OLD_INCX,  INCX
	movq	OLD_Y,     Y
	movq	OLD_INCY,  INCY
	
	leaq	(,INCX, SIZE), INCX
	leaq	(,INCY, SIZE), INCY

	movapd	 %xmm0, ALPHA

	testq	M, M
	jle	.L999
	testq	N, N
	jle	.L999

	mov     N,   TEMP
	imulq	LDA, TEMP
	movq	$P,   BO
	subq	TEMP, BO

	leaq	(, BO,  SIZE), BO
	leaq	(, LDA, SIZE), LDA

	xor	IS, IS
	movq	BO, NLDA

	testq	$SIZE, LDA
	jne	.L100

	testq	$SIZE, A
	jne	.L50
	ALIGN_3

.L10:
	movq	$P,   TEMP
	movq	M,    MIN_M
	subq	IS,   MIN_M
	cmpq	TEMP, MIN_M
	cmovg	TEMP, MIN_M

	movq	BUFFER, BO

	movq	MIN_M, I
	sarq	$3,    I
	jle	.L15
	ALIGN_3

.L12:
	movsd	(X), %xmm0
	addq	INCX, X
	movhpd	(X), %xmm0
	addq	INCX, X

	movsd	(X), %xmm2
	addq	INCX, X
	movhpd	(X), %xmm2
	addq	INCX, X

	movsd	(X), %xmm4
	addq	INCX, X
	movhpd	(X), %xmm4
	addq	INCX, X

	movsd	(X), %xmm6
	addq	INCX, X
	movhpd	(X), %xmm6
	addq	INCX, X

	movapd	%xmm0, 0 * SIZE(BO)
	movapd	%xmm2, 2 * SIZE(BO)
	movapd	%xmm4, 4 * SIZE(BO)
	movapd	%xmm6, 6 * SIZE(BO)

	addq	$8 * SIZE, BO
	decq	I
	jg	.L12
	ALIGN_3

.L15:
	movq	MIN_M, I
	andq	$7,    I
	jle	.L20
	ALIGN_2

.L16:
	movsd	(X), %xmm0
	addq	INCX, X

	movsd	%xmm0, 0 * SIZE(BO)
	addq	$SIZE, BO
	decq	I
	jg	.L16
	ALIGN_3

.L20:
	movq	Y, CO
	movq	N,  J
	sarq	$2, J
	jle	.L30
	ALIGN_3

.L21:
	movq	A, AO1
	leaq	(A, LDA, 1), AO2
	leaq	(A, LDA, 4), A
	movq	BUFFER, BO

	movapd	 0 * SIZE(BO), %xmm12
	pxor	%xmm0, %xmm0
	movapd	 2 * SIZE(BO), %xmm13
	pxor	%xmm1, %xmm1
	pxor	%xmm2, %xmm2
	pxor	%xmm3, %xmm3

#if defined(CORE2) || defined(PENRYN)
	PREFETCHW	4 * SIZE(CO)
#endif

	movq	MIN_M, I
	sarq	$4,  I
	jle	.L24

	movapd	 0 * SIZE(AO1), %xmm4
	movapd	 0 * SIZE(AO2), %xmm5
	movapd	 0 * SIZE(AO1, LDA, 2), %xmm6
	movapd	 0 * SIZE(AO2, LDA, 2), %xmm7
	movapd	 2 * SIZE(AO1), %xmm8
	movapd	 2 * SIZE(AO2), %xmm9
	movapd	 2 * SIZE(AO1, LDA, 2), %xmm10
	movapd	 2 * SIZE(AO2, LDA, 2), %xmm11

	decq	I
	jle	.L23
	ALIGN_3

.L22:
	PREFETCH	PREFETCHSIZE * SIZE(AO1)

	mulpd	%xmm12, %xmm4
	addpd	%xmm4, %xmm0
	movapd	 4 * SIZE(AO1), %xmm4
	mulpd	%xmm12, %xmm5
	addpd	%xmm5, %xmm1
	movapd	 4 * SIZE(AO2), %xmm5
	mulpd	%xmm12, %xmm6
	addpd	%xmm6, %xmm2
	movapd	 4 * SIZE(AO1, LDA, 2), %xmm6
	mulpd	%xmm12, %xmm7
	movapd	 4 * SIZE(BO), %xmm12
	addpd	%xmm7, %xmm3
	movapd	 4 * SIZE(AO2, LDA, 2), %xmm7

#if defined(CORE2) || defined(PENRYN)
	PREFETCH	(PREFETCHSIZE + 8) * SIZE(AO1)
#endif

	mulpd	%xmm13, %xmm8
	addpd	%xmm8, %xmm0
	movapd	 6 * SIZE(AO1), %xmm8
	mulpd	%xmm13, %xmm9
	addpd	%xmm9, %xmm1
	movapd	 6 * SIZE(AO2), %xmm9
	mulpd	%xmm13, %xmm10
	addpd	%xmm10, %xmm2
	movapd	 6 * SIZE(AO1, LDA, 2), %xmm10
	mulpd	%xmm13, %xmm11
	movapd	 6 * SIZE(BO), %xmm13
	addpd	%xmm11, %xmm3
	movapd	 6 * SIZE(AO2, LDA, 2), %xmm11

	PREFETCH	PREFETCHSIZE * SIZE(AO2)

	mulpd	%xmm12, %xmm4
	addpd	%xmm4, %xmm0
	movapd	 8 * SIZE(AO1), %xmm4
	mulpd	%xmm12, %xmm5
	addpd	%xmm5, %xmm1
	movapd	 8 * SIZE(AO2), %xmm5
	mulpd	%xmm12, %xmm6
	addpd	%xmm6, %xmm2
	movapd	 8 * SIZE(AO1, LDA, 2), %xmm6
	mulpd	%xmm12, %xmm7
	movapd	 8 * SIZE(BO), %xmm12
	addpd	%xmm7, %xmm3
	movapd	 8 * SIZE(AO2, LDA, 2), %xmm7

#if defined(CORE2) || defined(PENRYN)
	PREFETCH	(PREFETCHSIZE + 8) * SIZE(AO2)
#endif

	mulpd	%xmm13, %xmm8
	addpd	%xmm8, %xmm0
	movapd	10 * SIZE(AO1), %xmm8
	mulpd	%xmm13, %xmm9
	addpd	%xmm9, %xmm1
	movapd	10 * SIZE(AO2), %xmm9
	mulpd	%xmm13, %xmm10
	addpd	%xmm10, %xmm2
	movapd	10 * SIZE(AO1, LDA, 2), %xmm10
	mulpd	%xmm13, %xmm11
	movapd	10 * SIZE(BO), %xmm13
	addpd	%xmm11, %xmm3
	movapd	10 * SIZE(AO2, LDA, 2), %xmm11

	PREFETCH	PREFETCHSIZE * SIZE(AO1, LDA, 2)

	mulpd	%xmm12, %xmm4
	addpd	%xmm4, %xmm0
	movapd	12 * SIZE(AO1), %xmm4
	mulpd	%xmm12, %xmm5
	addpd	%xmm5, %xmm1
	movapd	12 * SIZE(AO2), %xmm5
	mulpd	%xmm12, %xmm6
	addpd	%xmm6, %xmm2
	movapd	12 * SIZE(AO1, LDA, 2), %xmm6
	mulpd	%xmm12, %xmm7
	movapd	12 * SIZE(BO), %xmm12
	addpd	%xmm7, %xmm3
	movapd	12 * SIZE(AO2, LDA, 2), %xmm7

#if defined(CORE2) || defined(PENRYN)
	PREFETCH	(PREFETCHSIZE + 8) * SIZE(AO1, LDA, 2)
#endif

	mulpd	%xmm13, %xmm8
	addpd	%xmm8, %xmm0
	movapd	14 * SIZE(AO1), %xmm8
	mulpd	%xmm13, %xmm9
	addpd	%xmm9, %xmm1
	movapd	14 * SIZE(AO2), %xmm9
	mulpd	%xmm13, %xmm10
	addpd	%xmm10, %xmm2
	movapd	14 * SIZE(AO1, LDA, 2), %xmm10
	mulpd	%xmm13, %xmm11
	movapd	14 * SIZE(BO), %xmm13
	addpd	%xmm11, %xmm3
	movapd	14 * SIZE(AO2, LDA, 2), %xmm11

	PREFETCH	PREFETCHSIZE * SIZE(AO2, LDA, 2)

	mulpd	%xmm12, %xmm4
	addpd	%xmm4, %xmm0
	movapd	16 * SIZE(AO1), %xmm4
	mulpd	%xmm12, %xmm5
	addpd	%xmm5, %xmm1
	movapd	16 * SIZE(AO2), %xmm5
	mulpd	%xmm12, %xmm6
	addpd	%xmm6, %xmm2
	movapd	16 * SIZE(AO1, LDA, 2), %xmm6
	mulpd	%xmm12, %xmm7
	movapd	16 * SIZE(BO), %xmm12
	addpd	%xmm7, %xmm3
	movapd	16 * SIZE(AO2, LDA, 2), %xmm7

#if defined(CORE2) || defined(PENRYN)
	PREFETCH	(PREFETCHSIZE + 8) * SIZE(AO2, LDA, 2)
#endif

	mulpd	%xmm13, %xmm8
	addpd	%xmm8, %xmm0
	movapd	18 * SIZE(AO1), %xmm8
	mulpd	%xmm13, %xmm9
	addpd	%xmm9, %xmm1
	movapd	18 * SIZE(AO2), %xmm9
	mulpd	%xmm13, %xmm10
	addpd	%xmm10, %xmm2
	movapd	18 * SIZE(AO1, LDA, 2), %xmm10
	mulpd	%xmm13, %xmm11
	movapd	18 * SIZE(BO), %xmm13
	addpd	%xmm11, %xmm3
	movapd	18 * SIZE(AO2, LDA, 2), %xmm11

	subq	$-16 * SIZE, AO1
	subq	$-16 * SIZE, AO2
	subq	$-16 * SIZE, BO
	decq	I
	jg	.L22
	ALIGN_3

.L23:
	mulpd	%xmm12, %xmm4
	addpd	%xmm4, %xmm0
	movapd	 4 * SIZE(AO1), %xmm4
	mulpd	%xmm12, %xmm5
	addpd	%xmm5, %xmm1
	movapd	 4 * SIZE(AO2), %xmm5
	mulpd	%xmm12, %xmm6
	addpd	%xmm6, %xmm2
	movapd	 4 * SIZE(AO1, LDA, 2), %xmm6
	mulpd	%xmm12, %xmm7
	movapd	 4 * SIZE(BO), %xmm12
	addpd	%xmm7, %xmm3
	movapd	 4 * SIZE(AO2, LDA, 2), %xmm7

	mulpd	%xmm13, %xmm8
	addpd	%xmm8, %xmm0
	movapd	 6 * SIZE(AO1), %xmm8
	mulpd	%xmm13, %xmm9
	addpd	%xmm9, %xmm1
	movapd	 6 * SIZE(AO2), %xmm9
	mulpd	%xmm13, %xmm10
	addpd	%xmm10, %xmm2
	movapd	 6 * SIZE(AO1, LDA, 2), %xmm10
	mulpd	%xmm13, %xmm11
	movapd	 6 * SIZE(BO), %xmm13
	addpd	%xmm11, %xmm3
	movapd	 6 * SIZE(AO2, LDA, 2), %xmm11

	mulpd	%xmm12, %xmm4
	addpd	%xmm4, %xmm0
	movapd	 8 * SIZE(AO1), %xmm4
	mulpd	%xmm12, %xmm5
	addpd	%xmm5, %xmm1
	movapd	 8 * SIZE(AO2), %xmm5
	mulpd	%xmm12, %xmm6
	addpd	%xmm6, %xmm2
	movapd	 8 * SIZE(AO1, LDA, 2), %xmm6
	mulpd	%xmm12, %xmm7
	movapd	 8 * SIZE(BO), %xmm12
	addpd	%xmm7, %xmm3
	movapd	 8 * SIZE(AO2, LDA, 2), %xmm7

	mulpd	%xmm13, %xmm8
	addpd	%xmm8, %xmm0
	movapd	10 * SIZE(AO1), %xmm8
	mulpd	%xmm13, %xmm9
	addpd	%xmm9, %xmm1
	movapd	10 * SIZE(AO2), %xmm9
	mulpd	%xmm13, %xmm10
	addpd	%xmm10, %xmm2
	movapd	10 * SIZE(AO1, LDA, 2), %xmm10
	mulpd	%xmm13, %xmm11
	movapd	10 * SIZE(BO), %xmm13
	addpd	%xmm11, %xmm3
	movapd	10 * SIZE(AO2, LDA, 2), %xmm11

	mulpd	%xmm12, %xmm4
	addpd	%xmm4, %xmm0
	movapd	12 * SIZE(AO1), %xmm4
	mulpd	%xmm12, %xmm5
	addpd	%xmm5, %xmm1
	movapd	12 * SIZE(AO2), %xmm5
	mulpd	%xmm12, %xmm6
	addpd	%xmm6, %xmm2
	movapd	12 * SIZE(AO1, LDA, 2), %xmm6
	mulpd	%xmm12, %xmm7
	movapd	12 * SIZE(BO), %xmm12
	addpd	%xmm7, %xmm3
	movapd	12 * SIZE(AO2, LDA, 2), %xmm7

	mulpd	%xmm13, %xmm8
	addpd	%xmm8, %xmm0
	movapd	14 * SIZE(AO1), %xmm8
	mulpd	%xmm13, %xmm9
	addpd	%xmm9, %xmm1
	movapd	14 * SIZE(AO2), %xmm9
	mulpd	%xmm13, %xmm10
	addpd	%xmm10, %xmm2
	movapd	14 * SIZE(AO1, LDA, 2), %xmm10
	mulpd	%xmm13, %xmm11
	movapd	14 * SIZE(BO), %xmm13
	addpd	%xmm11, %xmm3
	movapd	14 * SIZE(AO2, LDA, 2), %xmm11

	mulpd	%xmm12, %xmm4
	subq	$-16 * SIZE, AO1
	addpd	%xmm4, %xmm0
	subq	$-16 * SIZE, AO2
	mulpd	%xmm12, %xmm5
	subq	$-16 * SIZE, BO
	addpd	%xmm5, %xmm1
	mulpd	%xmm12, %xmm6
	addpd	%xmm6, %xmm2
	mulpd	%xmm12, %xmm7
	movapd	 0 * SIZE(BO), %xmm12
	addpd	%xmm7, %xmm3

	mulpd	%xmm13, %xmm8
	addpd	%xmm8, %xmm0
	mulpd	%xmm13, %xmm9
	addpd	%xmm9, %xmm1
	mulpd	%xmm13, %xmm10
	addpd	%xmm10, %xmm2
	mulpd	%xmm13, %xmm11
	movapd	 2 * SIZE(BO), %xmm13
	addpd	%xmm11, %xmm3

.L24:
	movq	MIN_M, I
	andq	$8,  I
	je	.L25

	movapd	 0 * SIZE(AO1), %xmm4
	movapd	 0 * SIZE(AO2), %xmm5
	movapd	 0 * SIZE(AO1, LDA, 2), %xmm6
	movapd	 0 * SIZE(AO2, LDA, 2), %xmm7
	movapd	 2 * SIZE(AO1), %xmm8
	movapd	 2 * SIZE(AO2), %xmm9
	movapd	 2 * SIZE(AO1, LDA, 2), %xmm10
	movapd	 2 * SIZE(AO2, LDA, 2), %xmm11

	mulpd	%xmm12, %xmm4
	addpd	%xmm4, %xmm0
	movapd	 4 * SIZE(AO1), %xmm4
	mulpd	%xmm12, %xmm5
	addpd	%xmm5, %xmm1
	movapd	 4 * SIZE(AO2), %xmm5
	mulpd	%xmm12, %xmm6
	addpd	%xmm6, %xmm2
	movapd	 4 * SIZE(AO1, LDA, 2), %xmm6
	mulpd	%xmm12, %xmm7
	movapd	 4 * SIZE(BO), %xmm12
	addpd	%xmm7, %xmm3
	movapd	 4 * SIZE(AO2, LDA, 2), %xmm7

	mulpd	%xmm13, %xmm8
	addpd	%xmm8, %xmm0
	movapd	 6 * SIZE(AO1), %xmm8
	mulpd	%xmm13, %xmm9
	addpd	%xmm9, %xmm1
	movapd	 6 * SIZE(AO2), %xmm9
	mulpd	%xmm13, %xmm10
	addpd	%xmm10, %xmm2
	movapd	 6 * SIZE(AO1, LDA, 2), %xmm10
	mulpd	%xmm13, %xmm11
	movapd	 6 * SIZE(BO), %xmm13
	addpd	%xmm11, %xmm3
	movapd	 6 * SIZE(AO2, LDA, 2), %xmm11

	mulpd	%xmm12, %xmm4
	subq	$-8 * SIZE, AO1
	addpd	%xmm4, %xmm0
	subq	$-8 * SIZE, AO2
	mulpd	%xmm12, %xmm5
	subq	$-8 * SIZE, BO
	addpd	%xmm5, %xmm1
	mulpd	%xmm12, %xmm6
	addpd	%xmm6, %xmm2
	mulpd	%xmm12, %xmm7
	movapd	 0 * SIZE(BO), %xmm12
	addpd	%xmm7, %xmm3

	mulpd	%xmm13, %xmm8
	addpd	%xmm8, %xmm0
	mulpd	%xmm13, %xmm9
	addpd	%xmm9, %xmm1
	mulpd	%xmm13, %xmm10
	addpd	%xmm10, %xmm2
	mulpd	%xmm13, %xmm11
	movapd	 2 * SIZE(BO), %xmm13
	addpd	%xmm11, %xmm3

.L25:
	movq	MIN_M, I
	andq	$4,  I
	je	.L26

	movapd	 0 * SIZE(AO1), %xmm4
	movapd	 0 * SIZE(AO2), %xmm5
	movapd	 0 * SIZE(AO1, LDA, 2), %xmm6
	movapd	 0 * SIZE(AO2, LDA, 2), %xmm7
	movapd	 2 * SIZE(AO1), %xmm8
	movapd	 2 * SIZE(AO2), %xmm9
	movapd	 2 * SIZE(AO1, LDA, 2), %xmm10
	movapd	 2 * SIZE(AO2, LDA, 2), %xmm11

	mulpd	%xmm12, %xmm4
	subq	$-4 * SIZE, AO1
	addpd	%xmm4, %xmm0
	subq	$-4 * SIZE, AO2
	mulpd	%xmm12, %xmm5
	subq	$-4 * SIZE, BO
	addpd	%xmm5, %xmm1
	mulpd	%xmm12, %xmm6
	addpd	%xmm6, %xmm2
	mulpd	%xmm12, %xmm7
	movapd	 0 * SIZE(BO), %xmm12
	addpd	%xmm7, %xmm3

	mulpd	%xmm13, %xmm8
	addpd	%xmm8, %xmm0
	mulpd	%xmm13, %xmm9
	addpd	%xmm9, %xmm1
	mulpd	%xmm13, %xmm10
	addpd	%xmm10, %xmm2
	mulpd	%xmm13, %xmm11
	movapd	 2 * SIZE(BO), %xmm13
	addpd	%xmm11, %xmm3

.L26:
	movq	MIN_M, I
	andq	$2,  I
	je	.L27

	movapd	 0 * SIZE(AO1), %xmm4
	movapd	 0 * SIZE(AO2), %xmm5
	movapd	 0 * SIZE(AO1, LDA, 2), %xmm6
	movapd	 0 * SIZE(AO2, LDA, 2), %xmm7

	mulpd	%xmm12, %xmm4
	subq	$-2 * SIZE, AO1
	addpd	%xmm4, %xmm0
	subq	$-2 * SIZE, AO2
	mulpd	%xmm12, %xmm5
	subq	$-2 * SIZE, BO
	addpd	%xmm5, %xmm1
	mulpd	%xmm12, %xmm6
	addpd	%xmm6, %xmm2
	mulpd	%xmm12, %xmm7
	movapd	 0 * SIZE(BO), %xmm12
	addpd	%xmm7, %xmm3

.L27:
	movq	MIN_M, I
	andq	$1,  I
	je	.L29

	movsd	0 * SIZE(AO1), %xmm8
	mulsd	%xmm12, %xmm8
	addsd	%xmm8, %xmm0

	movsd	0 * SIZE(AO2), %xmm8
	mulsd	%xmm12, %xmm8
	addsd	%xmm8, %xmm1

	movsd	0 * SIZE(AO1, LDA, 2), %xmm8
	mulsd	%xmm12, %xmm8
	addsd	%xmm8, %xmm2

	movsd	0 * SIZE(AO2, LDA, 2), %xmm8
	mulsd	%xmm12, %xmm8
	addsd	%xmm8, %xmm3

.L29:
#ifdef HAVE_SSE3
	haddpd	%xmm0, %xmm0
	haddpd	%xmm1, %xmm1
	haddpd	%xmm2, %xmm2
	haddpd	%xmm3, %xmm3
#else
	movapd	%xmm0, %xmm9
	movapd	%xmm1, %xmm10
	movapd	%xmm2, %xmm11
	movapd	%xmm3, %xmm12

	unpckhpd %xmm0, %xmm0
	unpckhpd %xmm1, %xmm1
	unpckhpd %xmm2, %xmm2
	unpckhpd %xmm3, %xmm3

	addsd	 %xmm9,  %xmm0
	addsd	 %xmm10, %xmm1
	addsd	 %xmm11, %xmm2
	addsd	 %xmm12, %xmm3
#endif

	mulsd	ALPHA, %xmm0
	mulsd	ALPHA, %xmm1
	mulsd	ALPHA, %xmm2
	mulsd	ALPHA, %xmm3

	movq	CO, TEMP

	addsd	(TEMP), %xmm0
	addq	INCY, TEMP
	addsd	(TEMP), %xmm1
	addq	INCY, TEMP

	addsd	(TEMP), %xmm2
	addq	INCY, TEMP
	addsd	(TEMP), %xmm3

	movsd	%xmm0, (CO)
	addq	INCY, CO
	movsd	%xmm1, (CO)
	addq	INCY, CO
	movsd	%xmm2, (CO)
	addq	INCY, CO
	movsd	%xmm3, (CO)
	addq	INCY, CO

	decq	J
	jg	.L21
	ALIGN_3

.L30:
	movq	N,  J