OpenBLAS/kernel/power/zaxpy_microk_power8.c

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/**************************************************************************************
* 2016/03/23 Werner Saar (wernsaar@googlemail.com)
* 	 BLASTEST 		: OK
* 	 CTEST			: OK
* 	 TEST			: OK
*	 LAPACK-TEST		: OK
**************************************************************************************/


#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;
  __vector double t8;
  __vector double t9;
  __vector double t10;
  __vector double t11;
  long ytmp;

  __asm__
    (
       XXSPLTD_S(32,%x19,0)	// alpha_r
       XXSPLTD_S(33,%x20,0)	// alpha_i

       "lxvd2x		36, 0, %21	\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		%16, %3		\n\t"
       "dcbt		0, %2		\n\t"
       "dcbt		0, %3		\n\t"


       "lxvd2x		40, 0, %2	\n\t"	// x0
       "lxvd2x		41, %22, %2	\n\t"	// x1
       "lxvd2x		42, %23, %2	\n\t"	// x2
       "lxvd2x		43, %24, %2	\n\t"	// x3

       "lxvd2x		48, 0, %3	\n\t"	// y0
       "lxvd2x		49, %22, %3	\n\t"	// y1
       "lxvd2x		50, %23, %3	\n\t"	// y2
       "lxvd2x		51, %24, %3	\n\t"	// y3

       XXSWAPD_S(%x8,40)	// exchange real and imag part
       XXSWAPD_S(%x9,41)	// exchange real and imag part
       XXSWAPD_S(%x10,42)	// exchange real and imag part
       XXSWAPD_S(%x11,43)	// exchange real and imag part

       "addi		%2, %2, 64	\n\t"
       "addi		%3, %3, 64	\n\t"

       "lxvd2x		44, 0, %2	\n\t"	// x4
       "lxvd2x		45, %22, %2	\n\t"	// x5
       "lxvd2x		46, %23, %2	\n\t"	// x6
       "lxvd2x		47, %24, %2	\n\t"	// x7

       "lxvd2x		%x4, 0, %3	\n\t"	// y4
       "lxvd2x		%x5, %22, %3	\n\t"	// y5
       "lxvd2x		%x6, %23, %3	\n\t"	// y6
       "lxvd2x		%x7, %24, %3	\n\t"	// y7

       XXSWAPD_S(%x12,44)	// exchange real and imag part
       XXSWAPD_S(%x13,45)	// exchange real and imag part
       XXSWAPD_S(%x14,46)	// exchange real and imag part
       XXSWAPD_S(%x15,47)	// exchange real and imag part

       "addi		%2, %2, 64	\n\t"
       "addi		%3, %3, 64	\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"
       "lxvd2x		40, 0, %2	\n\t"	// x0
       "lxvd2x		41, %22, %2	\n\t"	// x1
       "xvmaddadp	50, 42, 32	\n\t"
       "xvmaddadp	51, 43, 32	\n\t"
       "lxvd2x		42, %23, %2	\n\t"	// x2
       "lxvd2x		43, %24, %2	\n\t"	// x3

       "xvmaddadp	%x4, 44, 32	\n\t"
       "addi		%2, %2, 64	\n\t"
       "xvmaddadp	%x5, 45, 32	\n\t"
       "lxvd2x		44, 0, %2	\n\t"	// x4
       "lxvd2x		45, %22, %2	\n\t"	// x5
       "xvmaddadp	%x6, 46, 32	\n\t"
       "xvmaddadp	%x7, 47, 32	\n\t"
       "lxvd2x		46, %23, %2	\n\t"	// x6
       "lxvd2x		47, %24, %2	\n\t"	// x7

       "xvmaddadp	48, %x8, 33	\n\t"	// alpha_i * x0_i , alpha_i * x0_r
       "addi		%2, %2, 64	\n\t"
       "xvmaddadp	49, %x9, 33	\n\t"
       "xvmaddadp	50, %x10, 33	\n\t"
       "xvmaddadp	51, %x11, 33	\n\t"

       "xvmaddadp	%x4, %x12, 33	\n\t"
       "xvmaddadp	%x5, %x13, 33	\n\t"
       "xvmaddadp	%x6, %x14, 33	\n\t"
       "xvmaddadp	%x7, %x15, 33	\n\t"

       "stxvd2x		48, 0, %16	\n\t"
       "stxvd2x		49, %22, %16	\n\t"
       "stxvd2x		50, %23, %16	\n\t"
       "stxvd2x		51, %24, %16	\n\t"

       "addi		%16, %16, 64	\n\t"

       "stxvd2x		%x4, 0, %16	\n\t"
       "stxvd2x		%x5, %22, %16	\n\t"
       "stxvd2x		%x6, %23, %16	\n\t"
       "stxvd2x		%x7, %24, %16	\n\t"

       "addi		%16, %16, 64	\n\t"

       XXSWAPD_S(%x8,40)	// exchange real and imag part
       XXSWAPD_S(%x9,41)	// exchange real and imag part
       "lxvd2x		48, 0, %3	\n\t"	// y0
       "lxvd2x		49, %22, %3	\n\t"	// y1
       XXSWAPD_S(%x10,42)	// exchange real and imag part
       XXSWAPD_S(%x11,43)	// exchange real and imag part
       "lxvd2x		50, %23, %3	\n\t"	// y2
       "lxvd2x		51, %24, %3	\n\t"	// y3

       XXSWAPD_S(%x12,44)	// exchange real and imag part
       "addi		%3, %3, 64	\n\t"
       XXSWAPD_S(%x13,45)	// exchange real and imag part
       "lxvd2x		%x4, 0, %3	\n\t"	// y4
       "lxvd2x		%x5, %22, %3	\n\t"	// y5
       XXSWAPD_S(%x14,46)	// exchange real and imag part
       XXSWAPD_S(%x15,47)	// exchange real and imag part
       "lxvd2x		%x6, %23, %3	\n\t"	// y6
       "lxvd2x		%x7, %24, %3	\n\t"	// y7

       "addi		%3, %3, 64	\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	%x4, 44, 32	\n\t"
       "xvmaddadp	%x5, 45, 32	\n\t"
       "xvmaddadp	%x6, 46, 32	\n\t"
       "xvmaddadp	%x7, 47, 32	\n\t"

       "xvmaddadp	48, %x8, 33	\n\t"	// alpha_i * x0_i , alpha_i * x0_r
       "xvmaddadp	49, %x9, 33	\n\t"
       "xvmaddadp	50, %x10, 33	\n\t"
       "xvmaddadp	51, %x11, 33	\n\t"

       "xvmaddadp	%x4, %x12, 33	\n\t"
       "xvmaddadp	%x5, %x13, 33	\n\t"
       "xvmaddadp	%x6, %x14, 33	\n\t"
       "xvmaddadp	%x7, %x15, 33	\n\t"

       "stxvd2x		48, 0, %16	\n\t"
       "stxvd2x		49, %22, %16	\n\t"
       "stxvd2x		50, %23, %16	\n\t"
       "stxvd2x		51, %24, %16	\n\t"

       "addi		%16, %16, 64	\n\t"

       "stxvd2x		%x4, 0, %16	\n\t"
       "stxvd2x		%x5, %22, %16	\n\t"
       "stxvd2x		%x6, %23, %16	\n\t"
       "stxvd2x		%x7, %24, %16	\n"

     "#n=%1 x=%17=%2 y=%0=%3 alpha=(%19,%20) mvecp=%18=%16 o16=%22 o32=%23 o48=%24 ytmp=%16\n"
     "#t0=%x4 t1=%x5 t2=%x6 t3=%x7 t4=%x8 t5=%x9 t6=%x10 t7=%x11 t8=%x12 t9=%x13 t10=%x14 t11=%x15"
     :
       "+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
       "=wa" (t8),	// 12
       "=wa" (t9),	// 13
       "=wa" (t10),	// 14
       "=wa" (t11),	// 15
       "=b" (ytmp)	// 16
     :
       "m" (*x),
       "m" (*mvecp),
       "d" (alpha_r),	// 19
       "d" (alpha_i),	// 20
       "16" (mvecp),	// 21
       "b" (16),	// 22
       "b" (32),	// 23
       "b" (48)		// 24
     :
       "cr0",
       "vs32","vs33","vs34","vs35","vs36","vs37","vs38","vs39",
       "vs40","vs41","vs42","vs43","vs44","vs45","vs46","vs47",
       "vs48","vs49","vs50","vs51"
     );
}