OSchip
/
OpenBLAS

/***************************************************************************
Copyright (c) 2020, The OpenBLAS Project
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*****************************************************************************/

#define HAVE_KERNEL_4 1
static void zaxpy_kernel_4 (long n, double *x, double *y,
			    double alpha_r, double alpha_i)
{
#if !defined(CONJ)
  static const double mvec[2] = { 1.0, -1.0 };
#else
  static const double mvec[2] = { -1.0, 1.0 };
#endif
  const double *mvecp = mvec;

  __vector double t0;
  __vector double t1;
  __vector double t2;
  __vector double t3;
  __vector double t4;
  __vector double t5;
  __vector double t6;
  __vector double t7;
  long ytmp;

  __asm__
    (
       XXSPLTD_S(32,%x15,0)	// alpha_r
       XXSPLTD_S(33,%x16,0)	// alpha_i
       "lxvd2x		36, 0, %17	\n\t"	// mvec

#if !defined(CONJ)
       "xvmuldp		33, 33, 36	\n\t"	// alpha_i * mvec
#else
       "xvmuldp		32, 32, 36	\n\t"	// alpha_r * mvec
#endif

       "mr		%12, %3		\n\t"
       "dcbt		0, %2		\n\t"
       "dcbt		0, %3		\n\t"


       "lxvp		40, 0(%2)	\n\t"	// x0
       "lxvp		42, 32(%2)	\n\t"	// x2
       "lxvp		48, 0(%3)	\n\t"	// y0
       "lxvp		50, 32(%3)	\n\t"	// y2

       XXSWAPD_S(%x4,40)	// exchange real and imag part
       XXSWAPD_S(%x5,41)	// exchange real and imag part
       XXSWAPD_S(%x6,42)	// exchange real and imag part
       XXSWAPD_S(%x7,43)	// exchange real and imag part

       "lxvp		44, 64(%2)	\n\t"	// x4
       "lxvp		46, 96(%2)	\n\t"	// x6
       "lxvp		34, 64(%3)	\n\t"	// y4
       "lxvp		38, 96(%3)	\n\t"	// y6

       XXSWAPD_S(%x8,44)	// exchange real and imag part
       XXSWAPD_S(%x9,45)	// exchange real and imag part
       XXSWAPD_S(%x10,46)	// exchange real and imag part
       XXSWAPD_S(%x11,47)	// exchange real and imag part

       "addi		%2, %2, 128	\n\t"
       "addi		%3, %3, 128	\n\t"

       "addic.		%1, %1, -8	\n\t"
       "ble		two%=		\n\t"

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

       "xvmaddadp	48, 40, 32	\n\t"	// alpha_r * x0_r , alpha_r * x0_i
       "xvmaddadp	49, 41, 32	\n\t"
       "lxvp		40, 0(%2)	\n\t"	// x0
       "xvmaddadp	50, 42, 32	\n\t"
       "xvmaddadp	51, 43, 32	\n\t"
       "lxvp		42, 32(%2)	\n\t"	// x2

       "xvmaddadp	34, 44, 32	\n\t"
       "xvmaddadp	35, 45, 32	\n\t"
       "lxvp		44, 64(%2)	\n\t"	// x4
       "xvmaddadp	38, 46, 32	\n\t"
       "xvmaddadp	39, 47, 32	\n\t"
       "lxvp		46, 96(%2)	\n\t"	// x6

       "xvmaddadp	48, %x4, 33	\n\t"	// alpha_i * x0_i , alpha_i * x0_r
       "addi		%2, %2, 128	\n\t"
       "xvmaddadp	49, %x5, 33	\n\t"
       "xvmaddadp	50, %x6, 33	\n\t"
       "xvmaddadp	51, %x7, 33	\n\t"

       "xvmaddadp	34, %x8, 33	\n\t"
       "xvmaddadp	35, %x9, 33	\n\t"
       "xvmaddadp	38, %x10, 33	\n\t"
       "xvmaddadp	39, %x11, 33	\n\t"

       "stxvp		48, 0(%12)	\n\t"
       "stxvp		50, 32(%12)	\n\t"
       "stxvp		34, 64(%12)	\n\t"
       "stxvp		38, 96(%12)	\n\t"

       "addi		%12, %12, 128	\n\t"

       XXSWAPD_S(%x4,40)	// exchange real and imag part
       XXSWAPD_S(%x5,41)	// exchange real and imag part
       "lxvp		48, 0(%3)	\n\t"	// y0
       XXSWAPD_S(%x6,42)	// exchange real and imag part
       XXSWAPD_S(%x7,43)	// exchange real and imag part
       "lxvp		50, 32(%3)	\n\t"	// y2

       XXSWAPD_S(%x8,44)	// exchange real and imag part
       XXSWAPD_S(%x9,45)	// exchange real and imag part
       "lxvp		34, 64(%3)	\n\t"	// y4
       XXSWAPD_S(%x10,46)	// exchange real and imag part
       XXSWAPD_S(%x11,47)	// exchange real and imag part
       "lxvp		38, 96(%3)	\n\t"	// y6

       "addi		%3, %3, 128	\n\t"

       "addic.		%1, %1, -8	\n\t"
       "bgt		one%=		\n"

       "two%=:				\n\t"
       "xvmaddadp	48, 40, 32	\n\t"	// alpha_r * x0_r , alpha_r * x0_i
       "xvmaddadp	49, 41, 32	\n\t"
       "xvmaddadp	50, 42, 32	\n\t"
       "xvmaddadp	51, 43, 32	\n\t"

       "xvmaddadp	34, 44, 32	\n\t"
       "xvmaddadp	35, 45, 32	\n\t"
       "xvmaddadp	38, 46, 32	\n\t"
       "xvmaddadp	39, 47, 32	\n\t"

       "xvmaddadp	48, %x4, 33	\n\t"	// alpha_i * x0_i , alpha_i * x0_r
       "xvmaddadp	49, %x5, 33	\n\t"
       "xvmaddadp	50, %x6, 33	\n\t"
       "xvmaddadp	51, %x7, 33	\n\t"

       "xvmaddadp	34, %x8, 33	\n\t"
       "xvmaddadp	35, %x9, 33	\n\t"
       "xvmaddadp	38, %x10, 33	\n\t"
       "xvmaddadp	39, %x11, 33	\n\t"

       "stxvp		48, 0(%12)	\n\t"
       "stxvp		50, 32(%12)	\n\t"
       "stxvp		34, 64(%12)	\n\t"
       "stxvp		38, 96(%12)	\n\t"

     "#n=%1 x=%13=%2 y=%0=%3 alpha=(%15,%16) mvecp=%14=%17 ytmp=%12\n"
     "#t0=%x4 t1=%x5 t2=%x6 t3=%x7 t4=%x8 t5=%x9 t6=%x10 t7=%x11"
     :
       "+m" (*y),
       "+r" (n),	// 1
       "+b" (x),	// 2
       "+b" (y),	// 3
       "=wa" (t0),	// 4
       "=wa" (t1),	// 5
       "=wa" (t2),	// 6
       "=wa" (t3),	// 7
       "=wa" (t4),	// 8
       "=wa" (t5),	// 9
       "=wa" (t6),	// 10
       "=wa" (t7),	// 11
       "=b" (ytmp)	// 12
     :
       "m" (*x),
       "m" (*mvecp),
       "d" (alpha_r),	// 15
       "d" (alpha_i),	// 16
       "12" (mvecp)	// 17
     :
       "cr0",
       "vs32","vs33","vs34","vs35","vs36","vs37","vs38","vs39",
       "vs40","vs41","vs42","vs43","vs44","vs45","vs46","vs47",
       "vs48","vs49","vs50","vs51"
     );
}