/***************************************************************************
Copyright (c) 2014, The OpenBLAS Project
All rights reserved.
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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;

	__asm__  __volatile__
	(
	"vxorpd		%%ymm4, %%ymm4, %%ymm4	             \n\t"
	"vxorpd		%%ymm5, %%ymm5, %%ymm5	             \n\t"
	"vxorpd		%%ymm6, %%ymm6, %%ymm6	             \n\t"
	"vxorpd		%%ymm7, %%ymm7, %%ymm7	             \n\t"

	".p2align 4				             \n\t"
	"1:				             \n\t"
        "vmovups                  (%2,%0,8), %%ymm12         \n\t"  // 2 * x
        "vmovups                32(%2,%0,8), %%ymm13         \n\t"  // 2 * x
        "vmovups                64(%2,%0,8), %%ymm14         \n\t"  // 2 * x
        "vmovups                96(%2,%0,8), %%ymm15         \n\t"  // 2 * x

	"vmulpd      (%3,%0,8), %%ymm12, %%ymm12 \n\t"  // 2 * y
	"vmulpd    32(%3,%0,8), %%ymm13, %%ymm13 \n\t"  // 2 * y
	"vmulpd    64(%3,%0,8), %%ymm14, %%ymm14 \n\t"  // 2 * y
	"vmulpd    96(%3,%0,8), %%ymm15, %%ymm15 \n\t"  // 2 * y

	"vaddpd      %%ymm4 , %%ymm12, %%ymm4 \n\t"  // 2 * y
	"vaddpd      %%ymm5 , %%ymm13, %%ymm5 \n\t"  // 2 * y
	"vaddpd      %%ymm6 , %%ymm14, %%ymm6 \n\t"  // 2 * y
	"vaddpd      %%ymm7 , %%ymm15, %%ymm7 \n\t"  // 2 * y

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

	"vextractf128	$1 , %%ymm4 , %%xmm12	     \n\t"
	"vextractf128	$1 , %%ymm5 , %%xmm13	     \n\t"
	"vextractf128	$1 , %%ymm6 , %%xmm14	     \n\t"
	"vextractf128	$1 , %%ymm7 , %%xmm15	     \n\t"

	"vaddpd        %%xmm4, %%xmm12, %%xmm4	\n\t"
	"vaddpd        %%xmm5, %%xmm13, %%xmm5	\n\t"
	"vaddpd        %%xmm6, %%xmm14, %%xmm6	\n\t"
	"vaddpd        %%xmm7, %%xmm15, %%xmm7	\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",
	  "%xmm8", "%xmm9", "%xmm10", "%xmm11",
	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
	  "memory"
	);

} 


