OpenBLAS/kernel/x86_64/daxpy_microk_haswell-2.c

/***************************************************************************
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#define HAVE_KERNEL_8 1
static void daxpy_kernel_8( BLASLONG n, FLOAT *x, FLOAT *y , FLOAT *alpha) __attribute__ ((noinline));

static void daxpy_kernel_8( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *alpha)
{


	BLASLONG register i = 0;

	__asm__  __volatile__
	(
	"vbroadcastsd		(%4), %%ymm0		    \n\t"  // alpha	

	".p2align 4				            \n\t"
	"1:				            \n\t"

        "vmovups                  (%3,%0,8), %%ymm12         \n\t"  // 4 * y
        "vmovups                32(%3,%0,8), %%ymm13         \n\t"  // 4 * y
        "vmovups                64(%3,%0,8), %%ymm14         \n\t"  // 4 * y
        "vmovups                96(%3,%0,8), %%ymm15         \n\t"  // 4 * y
	"vfmadd231pd       (%2,%0,8), %%ymm0  , %%ymm12  	     \n\t"   // y += alpha * x
	"vfmadd231pd     32(%2,%0,8), %%ymm0  , %%ymm13  	     \n\t"   // y += alpha * x
	"vfmadd231pd     64(%2,%0,8), %%ymm0  , %%ymm14  	     \n\t"   // y += alpha * x
	"vfmadd231pd     96(%2,%0,8), %%ymm0  , %%ymm15  	     \n\t"   // y += alpha * x
	"vmovups	%%ymm12,   (%3,%0,8)		     \n\t"
	"vmovups	%%ymm13, 32(%3,%0,8)		     \n\t"
	"vmovups	%%ymm14, 64(%3,%0,8)		     \n\t"
	"vmovups	%%ymm15, 96(%3,%0,8)		     \n\t"

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

	: 
          "+r" (i),	// 0	
	  "+r" (n)  	// 1
        :
          "r" (x),      // 2
          "r" (y),      // 3
          "r" (alpha)   // 4
	: "cc", 
	  "%xmm0", "%xmm1", "%xmm2", "%xmm3",
	  "%xmm4", "%xmm5", "%xmm6", "%xmm7",
	  "%xmm8", "%xmm9", "%xmm10", "%xmm11",
	  "%xmm12", "%xmm13", "%xmm14", "%xmm15",
	  "memory"
	);

}