/***************************************************************************
Copyright (c) 2014, The OpenBLAS Project
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
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1. Redistributions of source code must retain the above copyright
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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
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3. Neither the name of the OpenBLAS project nor the names of
its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 OPENBLAS PROJECT OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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*****************************************************************************/

#define HAVE_KERNEL_8 1
static void ddot_kernel_8( BLASLONG n, FLOAT *x, FLOAT *y , FLOAT *dot) __attribute__ ((noinline));

static void ddot_kernel_8( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *dot)
{


	BLASLONG register i = 0;

  if ( n < 1408 )
  {

	__asm__  __volatile__
	(
	"vzeroupper					     \n\t"
	"vxorpd		%%xmm4, %%xmm4, %%xmm4	             \n\t"
	"vxorpd		%%xmm5, %%xmm5, %%xmm5	             \n\t"
	"vxorpd		%%xmm6, %%xmm6, %%xmm6	             \n\t"
	"vxorpd		%%xmm7, %%xmm7, %%xmm7	             \n\t"

	".align 16				             \n\t"
	"1:				             \n\t"
        "vmovups                  (%2,%0,8), %%xmm12         \n\t"  // 2 * x
        "vmovups                16(%2,%0,8), %%xmm13         \n\t"  // 2 * x
        "vmovups                32(%2,%0,8), %%xmm14         \n\t"  // 2 * x
        "vmovups                48(%2,%0,8), %%xmm15         \n\t"  // 2 * x

	"vfmadd231pd         (%3,%0,8), %%xmm12, %%xmm4 \n\t"  // 2 * y
        "vmovups                64(%2,%0,8), %%xmm0         \n\t"  // 2 * x
        "vmovups                80(%2,%0,8), %%xmm1         \n\t"  // 2 * x
	"vfmadd231pd       16(%3,%0,8), %%xmm13, %%xmm5 \n\t"  // 2 * y
        "vmovups                96(%2,%0,8), %%xmm2         \n\t"  // 2 * x
        "vmovups               112(%2,%0,8), %%xmm3         \n\t"  // 2 * x
	"vfmadd231pd       32(%3,%0,8), %%xmm14, %%xmm6 \n\t"  // 2 * y
	"vfmadd231pd       48(%3,%0,8), %%xmm15, %%xmm7 \n\t"  // 2 * y


	"vfmadd231pd       64(%3,%0,8), %%xmm0 , %%xmm4 \n\t"  // 2 * y
	"vfmadd231pd       80(%3,%0,8), %%xmm1 , %%xmm5 \n\t"  // 2 * y
	"vfmadd231pd       96(%3,%0,8), %%xmm2 , %%xmm6 \n\t"  // 2 * y
	"vfmadd231pd      112(%3,%0,8), %%xmm3 , %%xmm7 \n\t"  // 2 * y

	"addq		$16 , %0	  	 	             \n\t"
	"subq	        $16 , %1			             \n\t"		

	"jnz		1b		             \n\t"

	"vaddpd        %%xmm4, %%xmm5, %%xmm4	\n\t"
	"vaddpd        %%xmm6, %%xmm7, %%xmm6	\n\t"
	"vaddpd        %%xmm4, %%xmm6, %%xmm4	\n\t"

	"vhaddpd        %%xmm4, %%xmm4, %%xmm4	\n\t"

	"vmovsd		%%xmm4,    (%4)		\n\t"
	"vzeroupper					     \n\t"

	:
        : 
          "r" (i),	// 0	
	  "r" (n),  	// 1
          "r" (x),      // 2
          "r" (y),      // 3
          "r" (dot)     // 4
	: "cc", 
	  "%xmm0", "%xmm1", "%xmm2", "%xmm3", 
	  "%xmm4", "%xmm5", "%xmm6", "%xmm7", 
	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
	  "memory"
	);
	return;
  }

	__asm__  __volatile__
	(
	"vzeroupper					     \n\t"
	"vxorpd		%%xmm4, %%xmm4, %%xmm4	             \n\t"
	"vxorpd		%%xmm5, %%xmm5, %%xmm5	             \n\t"
	"vxorpd		%%xmm6, %%xmm6, %%xmm6	             \n\t"
	"vxorpd		%%xmm7, %%xmm7, %%xmm7	             \n\t"

	".align 16				             \n\t"
	"1:				             \n\t"
	"prefetcht0	768(%2,%0,8)			     \n\t"
	"prefetcht0	832(%2,%0,8)			     \n\t"
        "vmovups                  (%2,%0,8), %%xmm12         \n\t"  // 2 * x
        "vmovups                16(%2,%0,8), %%xmm13         \n\t"  // 2 * x
        "vmovups                32(%2,%0,8), %%xmm14         \n\t"  // 2 * x
        "vmovups                48(%2,%0,8), %%xmm15         \n\t"  // 2 * x

	"prefetcht0	768(%3,%0,8)			     \n\t"
	"prefetcht0	832(%3,%0,8)			     \n\t"
	"vfmadd231pd         (%3,%0,8), %%xmm12, %%xmm4 \n\t"  // 2 * y
        "vmovups                64(%2,%0,8), %%xmm0         \n\t"  // 2 * x
        "vmovups                80(%2,%0,8), %%xmm1         \n\t"  // 2 * x
	"vfmadd231pd       16(%3,%0,8), %%xmm13, %%xmm5 \n\t"  // 2 * y
        "vmovups                96(%2,%0,8), %%xmm2         \n\t"  // 2 * x
        "vmovups               112(%2,%0,8), %%xmm3         \n\t"  // 2 * x
	"vfmadd231pd       32(%3,%0,8), %%xmm14, %%xmm6 \n\t"  // 2 * y
	"vfmadd231pd       48(%3,%0,8), %%xmm15, %%xmm7 \n\t"  // 2 * y


	"vfmadd231pd       64(%3,%0,8), %%xmm0 , %%xmm4 \n\t"  // 2 * y
	"vfmadd231pd       80(%3,%0,8), %%xmm1 , %%xmm5 \n\t"  // 2 * y
	"vfmadd231pd       96(%3,%0,8), %%xmm2 , %%xmm6 \n\t"  // 2 * y
	"vfmadd231pd      112(%3,%0,8), %%xmm3 , %%xmm7 \n\t"  // 2 * y

	"addq		$16 , %0	  	 	             \n\t"
	"subq	        $16 , %1			             \n\t"		

	"jnz		1b		             \n\t"

	"vaddpd        %%xmm4, %%xmm5, %%xmm4	\n\t"
	"vaddpd        %%xmm6, %%xmm7, %%xmm6	\n\t"
	"vaddpd        %%xmm4, %%xmm6, %%xmm4	\n\t"

	"vhaddpd        %%xmm4, %%xmm4, %%xmm4	\n\t"

	"vmovsd		%%xmm4,    (%4)		\n\t"
	"vzeroupper					     \n\t"

	:
        : 
          "r" (i),	// 0	
	  "r" (n),  	// 1
          "r" (x),      // 2
          "r" (y),      // 3
          "r" (dot)     // 4
	: "cc", 
	  "%xmm0", "%xmm1", "%xmm2", "%xmm3", 
	  "%xmm4", "%xmm5", "%xmm6", "%xmm7", 
	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
	  "memory"
	);


}