zsymv_l_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"

#ifdef CORE2
#define PREFETCH	prefetcht0
#define PREFETCHW	prefetcht0
#define PREFETCHSIZE	(16 * 24)
#endif

#ifdef PENRYN
#define PREFETCH	prefetcht0
#define PREFETCHW	prefetcht0
#define PREFETCHSIZE	(16 * 24)
#endif

#ifdef PENTIUM4
#define PREFETCH	prefetcht0
#define PREFETCHW	prefetcht0
#define PREFETCHSIZE	(16 * 28)
#endif

#ifdef OPTERON
#define PREFETCH	prefetch
#define PREFETCHW	prefetchw
#define PREFETCHSIZE	(16 * 12)
#define movsd		movlpd
#endif

#ifdef BARCELONA
#define PREFETCH	prefetch
#define PREFETCHW	prefetchw
#define PREFETCHSIZE	(16 * 16)
#endif

#ifdef GENERIC
#define PREFETCH	prefetcht0
#define PREFETCHW	prefetcht0
#define PREFETCHSIZE	(16 * 12)
#endif

#ifndef WINDOWS_ABI

#define STACKSIZE	80
	
#define OLD_INCY	 8 + STACKSIZE(%rsp)
#define OLD_BUFFER	16 + STACKSIZE(%rsp)

#define M	  ARG1
#define	A	  ARG2
#define LDA	  ARG3	
#define	X	  ARG4
#define INCX	  ARG5	
#define	Y	  ARG6
#define INCY	  %r10
#define BUFFER	  %r11

#else

#define STACKSIZE	256
	
#define OLD_LDA		 40 + STACKSIZE(%rsp)
#define OLD_X		 48 + STACKSIZE(%rsp)
#define OLD_INCX	 56 + STACKSIZE(%rsp)
#define OLD_Y		 64 + STACKSIZE(%rsp)
#define OLD_INCY	 72 + STACKSIZE(%rsp)
#define OLD_BUFFER	 80 + STACKSIZE(%rsp)

#define M	  ARG1
#define	A	  ARG4
#define LDA	  ARG3
#define	X	  %rdi
#define INCX	  %rsi	
#define	Y	  %rdx
#define INCY	  %r10
#define BUFFER	  %r11

#endif

#define TEMP	%rax
#define I	%rax
#define IS	%r12
#define A1	%rbx
#define A2	%rbp
#define XX	%r13
#define YY	%r14
#define NEW_X	BUFFER
#define NEW_Y	X

#define ALPHA_R  %xmm0
#define ALPHA_I  %xmm1

#define xtemp1 %xmm0
#define xtemp2 %xmm1
#define xtemp3 %xmm2
#define xtemp4 %xmm3

#define atemp1 %xmm4
#define atemp2 %xmm5
#define atemp3 %xmm6
#define atemp4 %xmm7

#define xsum1  %xmm8
#define xsum2  %xmm9
#define yy1    %xmm10
#define yy2    %xmm11

#define a1     %xmm12
#define a2     %xmm13
#define a3     %xmm14
#define	xt1    %xmm15

#if (defined(HAVE_SSE3) && !defined(CORE_OPTERON)) || defined(BARCELONA)
#define MOVDDUP(a, b, c)	movddup	a(b), c
#define MOVDDUP2(a, b, c)	movddup	a##b, c
#else
#define MOVDDUP(a, b, c)	movlpd	a(b), c;movhpd	a(b), c
#define MOVDDUP2(a, b, c)	movlpd	a##b, c;movhpd	a##b, c
#endif

#ifndef HEMV
#define ADD	addpd
#else
#define ADD	subpd
#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)

#ifdef WINDOWS_ABI
	movq	%rdi,    48(%rsp)
	movq	%rsi,    56(%rsp)
	movups	%xmm6,   64(%rsp)
	movups	%xmm7,   80(%rsp)
	movups	%xmm8,   96(%rsp)
	movups	%xmm9,  112(%rsp)
	movups	%xmm10, 128(%rsp)
	movups	%xmm11, 144(%rsp)
	movups	%xmm12, 160(%rsp)
	movups	%xmm13, 176(%rsp)
	movups	%xmm14, 192(%rsp)
	movups	%xmm15, 208(%rsp)

	movq	OLD_LDA,   LDA
	movq	OLD_X,     X
	movq	OLD_INCX,  INCX
	movq	OLD_Y,     Y

	movaps	%xmm1, %xmm0
	movaps	%xmm2, %xmm1
#endif

	movq	OLD_INCY,   INCY
	movq	OLD_BUFFER, BUFFER

	salq	$ZBASE_SHIFT, INCX
	salq	$ZBASE_SHIFT, INCY
	salq	$ZBASE_SHIFT, LDA

	testq	M, M
	jle	.L999

	pcmpeqb	%xmm2,  %xmm2
	xorpd	%xmm3,  %xmm3
	psllq	$63,    %xmm2
	unpcklpd %xmm3, %xmm2

	unpcklpd ALPHA_I, ALPHA_R
	unpcklpd ALPHA_R, ALPHA_I
	xorpd	 %xmm2,   ALPHA_I

	movq	BUFFER, XX

	movq	M,  %rax
	sarq	$2, %rax
	jle	.L02
	ALIGN_3

.L01:
	MOVDDUP(0 * SIZE, X, %xmm3)
	MOVDDUP(1 * SIZE, X, %xmm4)
	addq	INCX, X
	MOVDDUP(0 * SIZE, X, %xmm5)
	MOVDDUP(1 * SIZE, X, %xmm6)
	addq	INCX, X

	mulpd	ALPHA_R, %xmm3
	mulpd	ALPHA_I, %xmm4
	mulpd	ALPHA_R, %xmm5
	mulpd	ALPHA_I, %xmm6

	addpd	%xmm4, %xmm3
	addpd	%xmm6, %xmm5

	movapd	%xmm3, 0 * SIZE(XX)
	SHUFPD_1 %xmm3, %xmm3
	pxor	%xmm2, %xmm3
	movapd	%xmm3, 2 * SIZE(XX)

	movapd	%xmm5, 4 * SIZE(XX)
	SHUFPD_1 %xmm5, %xmm5
	pxor	%xmm2, %xmm5
	movapd	%xmm5, 6 * SIZE(XX)

	MOVDDUP(0 * SIZE, X, %xmm3)
	MOVDDUP(1 * SIZE, X, %xmm4)
	addq	INCX, X
	MOVDDUP(0 * SIZE, X, %xmm5)
	MOVDDUP(1 * SIZE, X, %xmm6)
	addq	INCX, X

	mulpd	ALPHA_R, %xmm3
	mulpd	ALPHA_I, %xmm4
	mulpd	ALPHA_R, %xmm5
	mulpd	ALPHA_I, %xmm6

	addpd	%xmm4, %xmm3
	addpd	%xmm6, %xmm5

	movapd	%xmm3,  8 * SIZE(XX)
	SHUFPD_1 %xmm3, %xmm3
	pxor	%xmm2, %xmm3
	movapd	%xmm3, 10 * SIZE(XX)

	movapd	%xmm5, 12 * SIZE(XX)
	SHUFPD_1 %xmm5, %xmm5
	pxor	%xmm2, %xmm5
	movapd	%xmm5, 14 * SIZE(XX)

	subq	$-16 * SIZE, XX
	decq	%rax
	jg	.L01
	ALIGN_3

.L02:
	movq	M, %rax
	andq	$3, %rax
	jle	.L05
	ALIGN_3

.L03:
	MOVDDUP(0 * SIZE, X, %xmm3)
	MOVDDUP(1 * SIZE, X, %xmm4)
	addq	INCX, X

	mulpd	ALPHA_R, %xmm3
	mulpd	ALPHA_I, %xmm4

	addpd	%xmm4, %xmm3

	movapd	%xmm3, 0 * SIZE(XX)
	SHUFPD_1 %xmm3, %xmm3
	pxor	%xmm2, %xmm3
	movapd	%xmm3, 2 * SIZE(XX)

	addq	$4 * SIZE, XX
	decq	%rax
	jg	.L03
	ALIGN_3

.L05:
	/* now we don't need original X */
	movq   Y, NEW_Y

	addq   $512, XX
	andq   $-512, XX

	cmpq   $2 * SIZE, INCY
	je    .L10

	movq   Y,  YY
	movq   XX, NEW_Y

	movq	M,  %rax
	sarq	$2, %rax
	jle	.L07
	ALIGN_3

.L06:
	movsd	0 * SIZE(YY), %xmm0
	movhpd	1 * SIZE(YY), %xmm0
	addq	INCY, YY
	movsd	0 * SIZE(YY), %xmm1
	movhpd	1 * SIZE(YY), %xmm1
	addq	INCY, YY
	movsd	0 * SIZE(YY), %xmm2
	movhpd	1 * SIZE(YY), %xmm2
	addq	INCY, YY
	movsd	0 * SIZE(YY), %xmm3
	movhpd	1 * SIZE(YY), %xmm3
	addq	INCY, YY

	movapd	%xmm0, 0 * SIZE(XX)
	movapd	%xmm1, 2 * SIZE(XX)
	movapd	%xmm2, 4 * SIZE(XX)
	movapd	%xmm3, 6 * SIZE(XX)

	addq	$8 * SIZE, XX
	decq	%rax
	jg	.L06
	ALIGN_3

.L07:
	movq	M, %rax
	andq	$3, %rax
	jle	.L10
	ALIGN_3

.L08:
	movsd	0 * SIZE(YY), %xmm0
	movhpd	1 * SIZE(YY), %xmm0
	addq	INCY, YY

	movapd	%xmm0, 0 * SIZE(XX)

	addq	$2 * SIZE, XX
	decq	%rax
	jg	.L08
	ALIGN_3

.L10:
	xorq	IS, IS		# is = 0

	cmpq	$2, M
	jl	.L20
	ALIGN_3

.L11:
	movq	A,  A1
	leaq	(A, LDA, 1), A2
	leaq	4 * SIZE(A, LDA, 2), A

	leaq	(, IS, SIZE), I

	leaq	0 * SIZE(NEW_X, I, 4), XX
	leaq	4 * SIZE(NEW_Y, I, 2), YY

	movapd		0 * SIZE(XX), atemp1
	movapd		2 * SIZE(XX), atemp2
	movapd		4 * SIZE(XX), atemp3
	movapd		6 * SIZE(XX), atemp4

	MOVDDUP(0 * SIZE, A1, xsum1)
	MOVDDUP(2 * SIZE, A1, xsum2)

	mulpd	  atemp1, xsum1
	mulpd	  atemp1, xsum2

#ifndef HEMV
	MOVDDUP(1 * SIZE, A1, a1)
	MOVDDUP(3 * SIZE, A1, a2)

	mulpd	  atemp2, a1
	mulpd	  atemp2, a2
	addpd	  a1,     xsum1
	addpd	  a2,     xsum2
#else
	MOVDDUP(3 * SIZE, A1, a2)

	mulpd	  atemp2, a2
	addpd	  a2,     xsum2
#endif

	MOVDDUP(2 * SIZE, A1, a1)
	MOVDDUP(2 * SIZE, A2, a2)

	mulpd	  atemp3, a1
	mulpd	  atemp3, a2
	addpd	  a1,     xsum1
	addpd	  a2,     xsum2

#ifndef HEMV
	MOVDDUP(3 * SIZE, A1, a1)
	MOVDDUP(3 * SIZE, A2, a2)

	mulpd	  atemp4, a1
	mulpd	  atemp4, a2
	addpd	  a1,     xsum1
	addpd	  a2,     xsum2
#else
	MOVDDUP(3 * SIZE, A1, a1)

	mulpd	  atemp4, a1
	subpd	  a1,     xsum1
#endif

	MOVDDUP(4 * SIZE, A1, a1)
	MOVDDUP(6 * SIZE, A2, a2)

	movsd	 0 * SIZE(YY), yy1
	movhpd	 1 * SIZE(YY), yy1
	movsd	 2 * SIZE(YY), yy2
	movhpd	 3 * SIZE(YY), yy2

	movapd	 8 * SIZE(XX), xtemp1
	movapd	10 * SIZE(XX), xtemp2
	movapd	12 * SIZE(XX), xtemp3