/***************************************************************************
Copyright (c) 2014, The OpenBLAS Project
All rights reserved.
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
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*****************************************************************************/

#define HAVE_KERNEL_4x4 1
static void ssymv_kernel_4x4( BLASLONG from, BLASLONG to, FLOAT **a, FLOAT *x, FLOAT *y, FLOAT *temp1, FLOAT *temp2) __attribute__ ((noinline));

static void ssymv_kernel_4x4(BLASLONG from, BLASLONG to, FLOAT **a, FLOAT *x, FLOAT *y, FLOAT *temp1, FLOAT *temp2)
{


	__asm__  __volatile__
	(
	"vxorps		%%xmm0 , %%xmm0 , %%xmm0     \n\t"	// temp2[0]
	"vxorps		%%xmm1 , %%xmm1 , %%xmm1     \n\t"	// temp2[1]
	"vxorps		%%xmm2 , %%xmm2 , %%xmm2     \n\t"	// temp2[2]
	"vxorps		%%xmm3 , %%xmm3 , %%xmm3     \n\t"	// temp2[3]
	"vbroadcastss   (%8),    %%xmm4	             \n\t"	// temp1[0]
	"vbroadcastss  4(%8),    %%xmm5	             \n\t"	// temp1[1]
	"vbroadcastss  8(%8),    %%xmm6	             \n\t"	// temp1[2]
	"vbroadcastss 12(%8),    %%xmm7	             \n\t"	// temp1[3]

	".align 16				     \n\t"
	"1:				     \n\t"

	"vmovups	(%4,%0,4), %%xmm12	           \n\t"  // 2 * a
	"vmovups	(%2,%0,4), %%xmm8	           \n\t"  // 2 * x
	"vmovups	(%3,%0,4), %%xmm9	           \n\t"  // 2 * y

	"vmovups	(%5,%0,4), %%xmm13	           \n\t"  // 2 * a

	"vfmaddps	%%xmm0 , %%xmm8, %%xmm12 , %%xmm0  \n\t"  // temp2 += x * a
	"vfmaddps	%%xmm9 , %%xmm4, %%xmm12 , %%xmm9  \n\t"  // y     += temp1 * a
	"vmovups	(%6,%0,4), %%xmm14	           \n\t"  // 2 * a

	"vfmaddps	%%xmm1 , %%xmm8, %%xmm13 , %%xmm1  \n\t"  // temp2 += x * a
	"vfmaddps	%%xmm9 , %%xmm5, %%xmm13 , %%xmm9  \n\t"  // y     += temp1 * a
	"vmovups	(%7,%0,4), %%xmm15	           \n\t"  // 2 * a

	"vfmaddps	%%xmm2 , %%xmm8, %%xmm14 , %%xmm2  \n\t"  // temp2 += x * a
	"vfmaddps	%%xmm9 , %%xmm6, %%xmm14 , %%xmm9  \n\t"  // y     += temp1 * a

	"vfmaddps	%%xmm3 , %%xmm8, %%xmm15 , %%xmm3  \n\t"  // temp2 += x * a
	"vfmaddps	%%xmm9 , %%xmm7, %%xmm15 , %%xmm9  \n\t"  // y     += temp1 * a

	"addq		$4 , %0	  	 	      \n\t"

	"vmovups	%%xmm9 ,  -16(%3,%0,4)		   \n\t"

	"cmpq		%0 , %1			      \n\t"
	"jnz		1b		      \n\t"

	"vmovss		  (%9), %%xmm4		      \n\t"
	"vmovss		 4(%9), %%xmm5		      \n\t"
	"vmovss		 8(%9), %%xmm6		      \n\t"
	"vmovss		12(%9), %%xmm7		      \n\t"

	"vhaddps        %%xmm0, %%xmm0, %%xmm0  \n\t"
	"vhaddps        %%xmm1, %%xmm1, %%xmm1  \n\t"
	"vhaddps        %%xmm2, %%xmm2, %%xmm2  \n\t"
	"vhaddps        %%xmm3, %%xmm3, %%xmm3  \n\t"
	"vhaddps        %%xmm0, %%xmm0, %%xmm0  \n\t"
	"vhaddps        %%xmm1, %%xmm1, %%xmm1  \n\t"
	"vhaddps        %%xmm2, %%xmm2, %%xmm2  \n\t"
	"vhaddps        %%xmm3, %%xmm3, %%xmm3  \n\t"

	"vaddss		%%xmm4, %%xmm0, %%xmm0  \n\t"
	"vaddss		%%xmm5, %%xmm1, %%xmm1  \n\t"
	"vaddss		%%xmm6, %%xmm2, %%xmm2  \n\t"
	"vaddss		%%xmm7, %%xmm3, %%xmm3  \n\t"

	"vmovss         %%xmm0 ,  (%9)		\n\t"	// save temp2
	"vmovss         %%xmm1 , 4(%9)		\n\t"	// save temp2
	"vmovss         %%xmm2 , 8(%9)		\n\t"	// save temp2
	"vmovss         %%xmm3 ,12(%9)		\n\t"	// save temp2

	:
        : 
          "r" (from),	// 0	
	  "r" (to),  	// 1
          "r" (x),      // 2
          "r" (y),      // 3
          "r" (a[0]),	// 4
          "r" (a[1]),	// 5
          "r" (a[2]),	// 6
          "r" (a[3]),	// 8
          "r" (temp1),  // 8
          "r" (temp2)   // 9
	: "cc", 
	  "%xmm0", "%xmm1", "%xmm2", "%xmm3", 
	  "%xmm4", "%xmm5", "%xmm6", "%xmm7", 
	  "%xmm8", "%xmm9", "%xmm10", "%xmm11", 
	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
	  "memory"
	);

} 


