gemm_kernel_2x4_sse2.s

Optimized GotoBLAS libraries

	pxor	%xmm4, %xmm4
	pxor	%xmm5, %xmm5
	pxor	%xmm6, %xmm6
	pxor	%xmm7, %xmm7

	leal	(LDC, LDC, 2), %eax

	movsd	 0 * SIZE(AA), %xmm0
	movsd	 4 * SIZE(AA), %xmm1
	movsd	 0 * SIZE(BB), %xmm2
	movsd	 8 * SIZE(BB), %xmm3

#ifndef TRMMKERNEL
	movl	K, %eax
#elif (defined(LEFT) && !defined(TRANSA)) || (!defined(LEFT) && defined(TRANSA))
	movl	K, %eax
	subl	KK, %eax
	movl	%eax, KKK	
#else
	movl	KK, %eax
#ifdef LEFT
	addl	$1, %eax
#else
	addl	$2, %eax
#endif
	movl	%eax, KKK
#endif
	sarl	$3, %eax
	je	.L55
	ALIGN_4

.L52:
	mulsd	%xmm0, %xmm2
#if defined(OPTERON) || defined(BARCELONA)
	PREFETCH (PREFETCHSIZE  + 0) * SIZE(AA)
#endif
	mulsd	 2 * SIZE(BB), %xmm0
	addsd	%xmm2, %xmm4
	movsd	 4 * SIZE(BB), %xmm2
	addsd	%xmm0, %xmm5
	movsd	 1 * SIZE(AA), %xmm0

	mulsd	%xmm0, %xmm2
	mulsd	 6 * SIZE(BB), %xmm0
	addsd	%xmm2, %xmm6
	movsd	16 * SIZE(BB), %xmm2
	addsd	%xmm0, %xmm7
	movsd	 2 * SIZE(AA), %xmm0

	mulsd	%xmm0, %xmm3
	mulsd	10 * SIZE(BB), %xmm0
	addsd	%xmm3, %xmm4
	movsd	12 * SIZE(BB), %xmm3
	addsd	%xmm0, %xmm5
	movsd	 3 * SIZE(AA), %xmm0

	mulsd	%xmm0, %xmm3
	mulsd	14 * SIZE(BB), %xmm0
	addsd	%xmm3, %xmm6
	movsd	24 * SIZE(BB), %xmm3
	addsd	%xmm0, %xmm7
	movsd	 8 * SIZE(AA), %xmm0

	mulsd	%xmm1, %xmm2
	mulsd	18 * SIZE(BB), %xmm1
	addsd	%xmm2, %xmm4
	movsd	20 * SIZE(BB), %xmm2
	addsd	%xmm1, %xmm5
	movsd	 5 * SIZE(AA), %xmm1

	mulsd	%xmm1, %xmm2
	mulsd	22 * SIZE(BB), %xmm1
	addsd	%xmm2, %xmm6
	movsd	32 * SIZE(BB), %xmm2
	addsd	%xmm1, %xmm7
	movsd	 6 * SIZE(AA), %xmm1

	mulsd	%xmm1, %xmm3
	mulsd	26 * SIZE(BB), %xmm1
	addsd	%xmm3, %xmm4
	movsd	28 * SIZE(BB), %xmm3
	addsd	%xmm1, %xmm5
	movsd	 7 * SIZE(AA), %xmm1

	mulsd	%xmm1, %xmm3
	mulsd	30 * SIZE(BB), %xmm1
	addsd	%xmm3, %xmm6
	movsd	40 * SIZE(BB), %xmm3
	addsd	%xmm1, %xmm7
	movsd	12 * SIZE(AA), %xmm1

	addl   $ 8 * SIZE, AA
	addl   $32 * SIZE, BB
	decl   %eax
	jne    .L52
	ALIGN_4

.L55:
#ifndef TRMMKERNEL
	movl	K, %eax
#else
	movl	KKK, %eax
#endif
	movsd	ALPHA,  %xmm3
	andl	$7, %eax		# if (k & 1)
	BRANCH
	je .L58

.L56:
	mulsd	%xmm0, %xmm2
	mulsd	 2 * SIZE(BB), %xmm0
	addsd	%xmm2, %xmm4
	movsd	 4 * SIZE(BB), %xmm2
	addsd	%xmm0, %xmm5
	movsd	 1 * SIZE(AA), %xmm0

	addl	$1 * SIZE, AA
	addl	$4 * SIZE, BB
	decl	%eax
	jg	.L56
	ALIGN_4

.L58:
	addsd	%xmm6, %xmm4
	addsd	%xmm7, %xmm5

	mulpd	%xmm3, %xmm4
	mulpd	%xmm3, %xmm5

#ifndef TRMMKERNEL
	movsd	0 * SIZE(%esi), %xmm0
	movsd	0 * SIZE(%esi, LDC, 1), %xmm1

	addsd	%xmm0, %xmm4
	addsd	%xmm1, %xmm5
#endif

	movsd	%xmm4, 0 * SIZE(%esi)
	movsd	%xmm5, 0 * SIZE(%esi, LDC, 1)

#if (defined(TRMMKERNEL) &&  defined(LEFT) &&  defined(TRANSA)) || \
    (defined(TRMMKERNEL) && !defined(LEFT) && !defined(TRANSA))
	movl	K, %eax
	subl	KKK, %eax
	leal	(,%eax, SIZE), %eax
	leal	(AA, %eax, 1), AA
	leal	(BB, %eax, 4), BB
#endif

#if defined(TRMMKERNEL) && defined(LEFT)
	addl	$1, KK
#endif
	ALIGN_4

.L59:
#if defined(TRMMKERNEL) && !defined(LEFT)
	addl	$2, KK
#endif

	leal	(, LDC, 2), %eax
	addl	%eax, C			# c += 4 * ldc
	ALIGN_4

.L60:
	testl	$1, N
	je	.L999

#if defined(TRMMKERNEL) && defined(LEFT)
	movl	OFFSET, %eax
	movl	%eax, KK
#endif	

	movl	K, %eax
	leal	BUFFER, %ecx
	sarl	$3, %eax
	jle	.L65
	ALIGN_4
	
.L62:
#ifdef PENTIUM4
#ifdef HAVE_SSE3
        movddup	 0 * SIZE(%edi), %xmm0
	movddup	 1 * SIZE(%edi), %xmm1
	movddup	 2 * SIZE(%edi), %xmm2
	movddup	 3 * SIZE(%edi), %xmm3
	movddup	 4 * SIZE(%edi), %xmm4
	movddup	 5 * SIZE(%edi), %xmm5
	movddup	 6 * SIZE(%edi), %xmm6
	movddup	 7 * SIZE(%edi), %xmm7

	movapd	%xmm0,  0 * SIZE(%ecx)
	movapd	%xmm1,  2 * SIZE(%ecx)
	movapd	%xmm2,  4 * SIZE(%ecx)
	movapd	%xmm3,  6 * SIZE(%ecx)
	movapd	%xmm4,  8 * SIZE(%ecx)
	movapd	%xmm5, 10 * SIZE(%ecx)
	movapd	%xmm6, 12 * SIZE(%ecx)
	movapd	%xmm7, 14 * SIZE(%ecx)
#else
	movsd	 0 * SIZE(%edi), %xmm0
	movsd	 1 * SIZE(%edi), %xmm1
	movsd	 2 * SIZE(%edi), %xmm2
	movsd	 3 * SIZE(%edi), %xmm3
	movsd	 4 * SIZE(%edi), %xmm4
	movsd	 5 * SIZE(%edi), %xmm5
	movsd	 6 * SIZE(%edi), %xmm6
	movsd	 7 * SIZE(%edi), %xmm7

	unpcklpd  %xmm0, %xmm0
	unpckhpd  %xmm1, %xmm1
	unpcklpd  %xmm2, %xmm2
	unpckhpd  %xmm3, %xmm3
	unpcklpd  %xmm4, %xmm4
	unpckhpd  %xmm5, %xmm5
	unpcklpd  %xmm6, %xmm6
	unpckhpd  %xmm7, %xmm7

	movapd	%xmm0,  0 * SIZE(%ecx)
	movapd	%xmm1,  2 * SIZE(%ecx)
	movapd	%xmm2,  4 * SIZE(%ecx)
	movapd	%xmm3,  6 * SIZE(%ecx)
	movapd	%xmm4,  8 * SIZE(%ecx)
	movapd	%xmm5, 10 * SIZE(%ecx)
	movapd	%xmm6, 12 * SIZE(%ecx)
	movapd	%xmm7, 14 * SIZE(%ecx)
#endif
	prefetcht1	 80 * SIZE(%edi)
     	prefetcht0	112 * SIZE(%ecx)
#endif

#if defined(OPTERON) || defined(BARCELONA)
#define COPYPREFETCH 40

	prefetchnta	(COPYPREFETCH) * SIZE(%edi)

	movq	 0 * SIZE(%edi), %mm0
	movq	 1 * SIZE(%edi), %mm1
	movq	 2 * SIZE(%edi), %mm2
	movq	 3 * SIZE(%edi), %mm3
	movq	 4 * SIZE(%edi), %mm4
	movq	 5 * SIZE(%edi), %mm5
	movq	 6 * SIZE(%edi), %mm6
	movq	 7 * SIZE(%edi), %mm7

	movq	%mm0,  0 * SIZE(%ecx)
	movq	%mm0,  1 * SIZE(%ecx)
	movq	%mm1,  2 * SIZE(%ecx)
	movq	%mm1,  3 * SIZE(%ecx)
	movq	%mm2,  4 * SIZE(%ecx)
	movq	%mm2,  5 * SIZE(%ecx)
	movq	%mm3,  6 * SIZE(%ecx)
	movq	%mm3,  7 * SIZE(%ecx)

	movq	%mm4,  8 * SIZE(%ecx)
	movq	%mm4,  9 * SIZE(%ecx)
	movq	%mm5, 10 * SIZE(%ecx)
	movq	%mm5, 11 * SIZE(%ecx)
	movq	%mm6, 12 * SIZE(%ecx)
	movq	%mm6, 13 * SIZE(%ecx)
	movq	%mm7, 14 * SIZE(%ecx)
	movq	%mm7, 15 * SIZE(%ecx)
#endif
	addl	$ 8 * SIZE, %edi
	addl	$16 * SIZE, %ecx
	decl	%eax
	jne	.L62
	ALIGN_2

.L65:
	movl	K,  %eax
	andl	$7, %eax
	BRANCH
	jle	.L70
	ALIGN_2

.L66:
#ifdef PENTIUM4
#ifdef HAVE_SSE3
	movddup	 0 * SIZE(%edi), %xmm0
	movapd	%xmm0,  0 * SIZE(%ecx)
#else
	movsd	 0 * SIZE(%edi), %xmm0
	unpcklpd  %xmm0, %xmm0
	movapd	%xmm0,  0 * SIZE(%ecx)
#endif
#endif

#if defined(OPTERON) || defined(BARCELONA)
	movq	 0 * SIZE(%edi), %mm0

	movq	%mm0,  0 * SIZE(%ecx)
	movq	%mm0,  1 * SIZE(%ecx)
#endif
	addl	$1 * SIZE, %edi
	addl	$2 * SIZE, %ecx
	decl	%eax
	jne	.L66
	ALIGN_4
	
.L70:
	movl	C, %esi		# coffset = c
	movl	A, AA		# aoffset = a
	movl	M,  %ebx
	sarl	$1, %ebx	# i = (m >> 2)
	jle	.L80
	ALIGN_4

.L71:
#if !defined(TRMMKERNEL) || \
	(defined(TRMMKERNEL) &&  defined(LEFT) &&  defined(TRANSA)) || \
	(defined(TRMMKERNEL) && !defined(LEFT) && !defined(TRANSA))

	leal	BUFFER, BB
#else
	leal	BUFFER, BB
	movl	KK, %eax
	leal	(, %eax, SIZE), %eax
	leal	(AA, %eax, 2), AA
	leal	(BB, %eax, 2), BB
#endif	

	pxor	%xmm4, %xmm4
	pxor	%xmm5, %xmm5
	pxor	%xmm6, %xmm6
	pxor	%xmm7, %xmm7

	movapd	 0 * SIZE(AA), %xmm0
	movapd	 8 * SIZE(AA), %xmm1
	movapd	 0 * SIZE(BB), %xmm2
	movapd	 8 * SIZE(BB), %xmm3

#ifdef HAVE_3DNOW
	prefetchw   2 * SIZE(%esi)
#endif

#ifdef PENTIUM4
	prefetchnta 2 * SIZE(%esi)
#endif

#ifndef TRMMKERNEL
	movl	K, %eax
#elif (defined(LEFT) && !defined(TRANSA)) || (!defined(LEFT) && defined(TRANSA))
	movl	K, %eax
	subl	KK, %eax
	movl	%eax, KKK	
#else
	movl	KK, %eax
#ifdef LEFT
	addl	$2, %eax
#else
	addl	$1, %eax
#endif
	movl	%eax, KKK
#endif
	sarl	$3, %eax
	je	.L75
	ALIGN_4

.L72:
	mulpd	%xmm0, %xmm2
	addpd	%xmm2, %xmm4
#if defined(OPTERON) || defined(BARCELONA)
	prefetcht0 (PREFETCHSIZE  + 0) * SIZE(AA)
#endif
	movapd	16 * SIZE(BB), %xmm2

	movapd	 2 * SIZE(AA), %xmm0
	mulpd	 2 * SIZE(BB), %xmm0
	addpd	%xmm0, %xmm4
	movapd	 4 * SIZE(AA), %xmm0
	mulpd	 4 * SIZE(BB), %xmm0
	addpd	%xmm0, %xmm4
	movapd	 6 * SIZE(AA), %xmm0
	mulpd	 6 * SIZE(BB), %xmm0
	addpd	%xmm0, %xmm4

	movapd	16 * SIZE(AA), %xmm0
#if defined(OPTERON) || defined(BARCELONA)
	prefetcht0 (PREFETCHSIZE  + 8) * SIZE(AA)
#endif
	mulpd	%xmm1, %xmm3
	addpd	%xmm3, %xmm4
	movapd	24 * SIZE(BB), %xmm3

	movapd	10 * SIZE(AA), %xmm1
	mulpd	10 * SIZE(BB), %xmm1
	addpd	%xmm1, %xmm4
	movapd	12 * SIZE(AA), %xmm1
	mulpd	12 * SIZE(BB), %xmm1
	addpd	%xmm1, %xmm4
	movapd	14 * SIZE(AA), %xmm1
	mulpd	14 * SIZE(BB), %xmm1
	addpd	%xmm1, %xmm4
	movapd	24 * SIZE(AA), %xmm1

	addl   $16 * SIZE, AA
	addl   $16 * SIZE, BB
	decl   %eax
	jne    .L72
	ALIGN_4

.L75:
#ifndef TRMMKERNEL
	movl	K, %eax
#else
	movl	KKK, %eax
#endif
	movapd	ALPHA,  %xmm3
	andl	$7, %eax		# if (k & 1)
	BRANCH
	je .L78
	ALIGN_3

.L76:
	mulpd	%xmm0, %xmm2
	addpd	%xmm2, %xmm4
	movapd	 2 * SIZE(AA), %xmm0
	movapd	 2 * SIZE(BB), %xmm2

	addl	$2 * SIZE, AA
	addl	$2 * SIZE, BB
	decl	%eax
	jg	.L76
	ALIGN_4

.L78:
	mulpd	%xmm3, %xmm4

#ifndef TRMMKERNEL
	movsd	0 * SIZE(%esi), %xmm0
	movhpd	1 * SIZE(%esi), %xmm0

	addpd	%xmm0, %xmm4
#endif

	movsd	%xmm4, 0 * SIZE(%esi)
	movhpd	%xmm4, 1 * SIZE(%esi)

#if (defined(TRMMKERNEL) &&  defined(LEFT) &&  defined(TRANSA)) || \
    (defined(TRMMKERNEL) && !defined(LEFT) && !defined(TRANSA))
	movl	K, %eax
	subl	KKK, %eax
	leal	(,%eax, SIZE), %eax
	leal	(AA, %eax, 2), AA
	leal	(BB, %eax, 2), BB
#endif

#if defined(TRMMKERNEL) && defined(LEFT)
	addl	$2, KK
#endif

	addl	$2 * SIZE, %esi		# coffset += 2
	decl	%ebx			# i --
	jg	.L71
	ALIGN_4

.L80:
	movl	M,  %ebx
	testl	$1, %ebx	# i = (m >> 2)
	jle	.L999

#if !defined(TRMMKERNEL) || \
	(defined(TRMMKERNEL) &&  defined(LEFT) &&  defined(TRANSA)) || \
	(defined(TRMMKERNEL) && !defined(LEFT) && !defined(TRANSA))

	leal	BUFFER, BB
#else
	leal	BUFFER, BB
	movl	KK, %eax
	leal	(, %eax, SIZE), %eax
	leal	(AA, %eax, 1), AA
	leal	(BB, %eax, 2), BB
#endif	

	pxor	%xmm4, %xmm4
	pxor	%xmm5, %xmm5
	pxor	%xmm6, %xmm6
	pxor	%xmm7, %xmm7

	leal	(LDC, LDC, 2), %eax

	movsd	 0 * SIZE(AA), %xmm0
	movsd	 4 * SIZE(AA), %xmm1
	movsd	 0 * SIZE(BB), %xmm2
	movsd	 8 * SIZE(BB), %xmm3

#ifndef TRMMKERNEL
	movl	K, %eax
#elif (defined(LEFT) && !defined(TRANSA)) || (!defined(LEFT) && defined(TRANSA))
	movl	K, %eax
	subl	KK, %eax
	movl	%eax, KKK	
#else
	movl	KK, %eax
#ifdef LEFT
	addl	$1, %eax
#else
	addl	$1, %eax
#endif
	movl	%eax, KKK
#endif
	sarl	$3, %eax
	je	.L85
	ALIGN_4

.L82:
	mulsd	%xmm0, %xmm2
#if defined(OPTERON) || defined(BARCELONA)
	prefetcht0 (PREFETCHSIZE  + 0) * SIZE(AA)
#endif
	movsd	 1 * SIZE(AA), %xmm0
	mulsd	 2 * SIZE(BB), %xmm0
	addsd	%xmm2, %xmm4
	movsd	16 * SIZE(BB), %xmm2
	addsd	%xmm0, %xmm5
	movsd	 2 * SIZE(AA), %xmm0
	mulsd	 4 * SIZE(BB), %xmm0
	addsd	%xmm0, %xmm6
	movsd	 3 * SIZE(AA), %xmm0
	mulsd	 6 * SIZE(BB), %xmm0
	addsd	%xmm0, %xmm7
	movsd	 8 * SIZE(AA), %xmm0
	mulsd	%xmm1, %xmm3
	movsd	 5 * SIZE(AA), %xmm1
	mulsd	10 * SIZE(BB), %xmm1
	addsd	%xmm3, %xmm4
	movsd	24 * SIZE(BB), %xmm3
	addsd	%xmm1, %xmm5
	movsd	 6 * SIZE(AA), %xmm1
	mulsd	12 * SIZE(BB), %xmm1
	addsd	%xmm1, %xmm6
	movsd	 7 * SIZE(AA), %xmm1
	mulsd	14 * SIZE(BB), %xmm1
	addsd	%xmm1, %xmm7
	movsd	12 * SIZE(AA), %xmm1

	addl   $ 8 * SIZE, AA
	addl   $16 * SIZE, BB
	decl   %eax
	jne    .L82
	ALIGN_4

.L85:
#ifndef TRMMKERNEL
	movl	K, %eax
#else
	movl	KKK, %eax
#endif
	movsd	ALPHA,  %xmm3
	andl	$7, %eax		# if (k & 1)
	BRANCH
	je .L88

.L86:
	mulsd	%xmm0, %xmm2
	addsd	%xmm2, %xmm4
	movsd	 2 * SIZE(BB), %xmm2
	movsd	 1 * SIZE(AA), %xmm0

	addl	$1 * SIZE, AA
	addl	$2 * SIZE, BB
	decl	%eax
	jg	.L86
	ALIGN_4

.L88:
	addsd	%xmm5, %xmm4
	addsd	%xmm7, %xmm6
	addsd	%xmm6, %xmm4

	mulsd	%xmm3, %xmm4

#ifndef TRMMKERNEL
	movsd	0 * SIZE(%esi), %xmm0
	addsd	%xmm0, %xmm4
#endif
	movsd	%xmm4, 0 * SIZE(%esi)
	ALIGN_4

.L999:
	movl	OLD_STACK, %esp
	EMMS
	
	popl	%ebx
	popl	%esi
	popl	%edi
	popl	%ebp
	ret

	EPILOGUE