OSchip
/
OpenBLAS

/***************************************************************************
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/**************************************************************************************
* 2016/03/30 Werner Saar (wernsaar@googlemail.com)
* 	 BLASTEST 		: OK
* 	 CTEST			: OK
* 	 TEST			: OK
*	 LAPACK-TEST		: OK
**************************************************************************************/

#define HAVE_KERNEL_4x4 1

static void dgemv_kernel_4x4 (long n, double *ap, long lda, double *x, double *y, double alpha)
{
  double *a0;
  double *a1;
  double *a2;
  double *a3;

  __asm__
    (
       "lxvp	40, 0(%10)	\n\t"	// x0, x1
       XXSPLTD_S(32,%x9,0)	// alpha, alpha

       "sldi		%6, %13, 3	\n\t"	// lda * sizeof (double)

       "xvmuldp		34, 41, 32	\n\t"	// x0 * alpha, x1 * alpha
       "xvmuldp		35, 40, 32	\n\t"	// x2 * alpha, x3 * alpha

       "add		%4, %3, %6	\n\t"	// a0 = ap, a1 = a0 + lda
       "add		%6, %6, %6	\n\t"	// 2 * lda

       XXSPLTD_S(32,34,1)	// x0 * alpha, x0 * alpha
       XXSPLTD_S(33,34,0)	// x1 * alpha, x1 * alpha
       XXSPLTD_S(34,35,1)	// x2 * alpha, x2 * alpha
       XXSPLTD_S(35,35,0)	// x3 * alpha, x3 * alpha

       "add		%5, %3, %6	\n\t"	// a2 = a0 + 2 * lda
       "add		%6, %4, %6	\n\t"	// a3 = a1 + 2 * lda

       "dcbt		0, %3		\n\t"
       "dcbt		0, %4		\n\t"
       "dcbt		0, %5		\n\t"
       "dcbt		0, %6		\n\t"

       "lxvp		40, 0(%3)	\n\t"	// a0[0], a0[1]

       "lxvp		42, 0(%4)	\n\t"	// a1[0], a1[1]

       "lxvp		44, 0(%5)	\n\t"	// a2[0], a2[1]

       "lxvp		46, 0(%6)	\n\t"	// a3[0], a3[1]

       "dcbt		0, %2		\n\t"

       "addi		%3, %3, 32	\n\t"
       "addi		%4, %4, 32	\n\t"
       "addi		%5, %5, 32	\n\t"
       "addi		%6, %6, 32	\n\t"

       "addic.		%1, %1, -4	\n\t"
       "ble		two%=		\n\t"

       ".align	5		\n"
     "one%=:				\n\t"

       "lxvp		36, 0(%2)	\n\t"	// y0, y1

       "xvmaddadp 	36, 40, 32	\n\t"
       "xvmaddadp 	37, 41, 32	\n\t"

       "lxvp		40, 0(%3)	\n\t"	// a0[0], a0[1]

       "xvmaddadp 	36, 42, 33	\n\t"
       "addi		%3, %3, 32	\n\t"
       "xvmaddadp 	37, 43, 33	\n\t"

       "lxvp		42, 0(%4)	\n\t"	// a1[0], a1[1]

       "xvmaddadp 	36, 44, 34	\n\t"
       "addi		%4, %4, 32	\n\t"
       "xvmaddadp 	37, 45, 34	\n\t"

       "lxvp		44, 0(%5)	\n\t"	// a2[0], a2[1]

       "xvmaddadp 	36, 46, 35	\n\t"
       "addi		%5, %5, 32	\n\t"
       "xvmaddadp 	37, 47, 35	\n\t"

       "stxvp		36, 0(%2)	\n\t"	// y0, y1

       "lxvp		46, 0(%6)	\n\t"	// a3[0], a3[1]

       "addi		%6, %6, 32	\n\t"
       "addi		%2, %2, 32	\n\t"

       "addic.		%1, %1, -4	\n\t"
       "ble		two%=		\n\t"


       "lxvp		36, 0(%2)	\n\t"	// y0, y1

       "xvmaddadp 	36, 40, 32	\n\t"
       "xvmaddadp 	37, 41, 32	\n\t"

       "lxvp		40, 0(%3)	\n\t"	// a0[0], a0[1]

       "xvmaddadp 	36, 42, 33	\n\t"
       "addi		%3, %3, 32	\n\t"
       "xvmaddadp 	37, 43, 33	\n\t"

       "lxvp		42, 0(%4)	\n\t"	// a1[0], a1[1]

       "xvmaddadp 	36, 44, 34	\n\t"
       "addi		%4, %4, 32	\n\t"
       "xvmaddadp 	37, 45, 34	\n\t"

       "lxvp		44, 0(%5)	\n\t"	// a2[0], a2[1]

       "xvmaddadp 	36, 46, 35	\n\t"
       "addi		%5, %5, 32	\n\t"
       "xvmaddadp 	37, 47, 35	\n\t"

       "stxvp		36, 0(%2)	\n\t"	// y0, y1

       "lxvp	46, 0(%6)	\n\t"	// a3[0], a3[1]

       "addi		%6, %6, 32	\n\t"
       "addi		%2, %2, 32	\n\t"

       "addic.		%1, %1, -4	\n\t"
       "ble		two%=		\n\t"


       "lxvp		36, 0(%2)	\n\t"	// y0, y1

       "xvmaddadp 	36, 40, 32	\n\t"
       "xvmaddadp 	37, 41, 32	\n\t"

       "lxvp		40, 0(%3)	\n\t"	// a0[0], a0[1]

       "xvmaddadp 	36, 42, 33	\n\t"
       "addi		%3, %3, 32	\n\t"
       "xvmaddadp 	37, 43, 33	\n\t"

       "lxvp		42, 0(%4)	\n\t"	// a1[0], a1[1]

       "xvmaddadp 	36, 44, 34	\n\t"
       "addi		%4, %4, 32	\n\t"
       "xvmaddadp 	37, 45, 34	\n\t"

       "lxvp		44, 0(%5)	\n\t"	// a2[0], a2[1]

       "xvmaddadp 	36, 46, 35	\n\t"
       "addi		%5, %5, 32	\n\t"
       "xvmaddadp 	37, 47, 35	\n\t"

       "stxvp		36, 0(%2)	\n\t"	// y0, y1

       "lxvp		46, 0(%6)	\n\t"	// a3[0], a3[1]

       "addi		%6, %6, 32	\n\t"
       "addi		%2, %2, 32	\n\t"

       "addic.		%1, %1, -4	\n\t"
       "ble		two%=		\n\t"


       "lxvp		36, 0(%2)	\n\t"	// y0, y1

       "xvmaddadp 	36, 40, 32	\n\t"
       "xvmaddadp 	37, 41, 32	\n\t"

       "lxvp		40, 0(%3)	\n\t"	// a0[0], a0[1]

       "xvmaddadp 	36, 42, 33	\n\t"
       "addi		%3, %3, 32	\n\t"
       "xvmaddadp 	37, 43, 33	\n\t"

       "lxvp		42, 0(%4)	\n\t"	// a1[0], a1[1]

       "xvmaddadp 	36, 44, 34	\n\t"
       "addi		%4, %4, 32	\n\t"
       "xvmaddadp 	37, 45, 34	\n\t"

       "lxvp		44, 0(%5)	\n\t"	// a2[0], a2[1]

       "xvmaddadp 	36, 46, 35	\n\t"
       "addi		%5, %5, 32	\n\t"
       "xvmaddadp 	37, 47, 35	\n\t"

       "stxvp		36, 0(%2)	\n\t"	// y0, y1

       "lxvp		46, 0(%6)	\n\t"	// a3[0], a3[1]

       "addi		%6, %6, 32	\n\t"
       "addi		%2, %2, 32	\n\t"

       "addic.		%1, %1, -4	\n\t"
       "bgt		one%=		\n"

     "two%=:				\n\t"

       "lxvp		36, 0(%2)	\n\t"	// y0, y1

       "xvmaddadp 	36, 40, 32	\n\t"
       "xvmaddadp 	37, 41, 32	\n\t"

       "xvmaddadp 	36, 42, 33	\n\t"
       "xvmaddadp 	37, 43, 33	\n\t"

       "xvmaddadp 	36, 44, 34	\n\t"
       "xvmaddadp 	37, 45, 34	\n\t"

       "xvmaddadp 	36, 46, 35	\n\t"
       "xvmaddadp 	37, 47, 35	\n\t"

       "stxvp		36, 0(%2)	\n\t"	// y0, y1

     "#n=%1 ap=%8=%12 lda=%13 x=%7=%10 y=%0=%2 alpha=%9 o16=%11\n"
     "#a0=%3 a1=%4 a2=%5 a3=%6"
     :
       "+m" (*y),
       "+r" (n),	// 1
       "+b" (y),	// 2
       "=b" (a0),	// 3
       "=b" (a1),	// 4
       "=&b" (a2),	// 5
       "=&b" (a3)	// 6
     :
       "m" (*x),
       "m" (*ap),
       "d" (alpha),	// 9
       "r" (x),		// 10
       "b" (16),	// 11
       "3" (ap),	// 12
       "4" (lda)	// 13
     :
       "cr0",
       "vs32","vs33","vs34","vs35","vs36","vs37",
       "vs40","vs41","vs42","vs43","vs44","vs45","vs46","vs47"
     );
}