OpenBLAS/kernel/power/sdot_microk_power8.c

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/**************************************************************************************
* 2016/03/21 Werner Saar (wernsaar@googlemail.com)
* 	 BLASTEST 		: OK
* 	 CTEST			: OK
* 	 TEST			: OK
*	 LAPACK-TEST		: OK
**************************************************************************************/

#define HAVE_KERNEL_16 1

static float sdot_kernel_16 (long n, float *x, float *y)
{
  float dot;
  __vector float t0;
  __vector float t1;
  __vector float t2;
  __vector float t3;

  __asm__
    (
       "dcbt		0, %2		\n\t"
       "dcbt		0, %3		\n\t"

       "xxlxor		32, 32,	32	\n\t"
       "xxlxor		33, 33,	33	\n\t"
       "xxlxor		34, 34,	34	\n\t"
       "xxlxor		35, 35,	35	\n\t"
       "xxlxor		36, 36,	36	\n\t"
       "xxlxor		37, 37,	37	\n\t"
       "xxlxor		38, 38,	38	\n\t"
       "xxlxor		39, 39,	39	\n\t"

       "lxvd2x		40, 0, %2	\n\t"
       "lxvd2x		48, 0, %3	\n\t"
       "lxvd2x		41, %10, %2	\n\t"
       "lxvd2x		49, %10, %3	\n\t"
       "lxvd2x		42, %11, %2	\n\t"
       "lxvd2x		50, %11, %3	\n\t"
       "lxvd2x		43, %12, %2	\n\t"
       "lxvd2x		51, %12, %3	\n\t"
       "lxvd2x		44, %13, %2	\n\t"
       "lxvd2x		%x4, %13, %3	\n\t"
       "lxvd2x		45, %14, %2	\n\t"
       "lxvd2x		%x5, %14, %3	\n\t"
       "lxvd2x		46, %15, %2	\n\t"
       "lxvd2x		%x6, %15, %3	\n\t"
       "lxvd2x		47, %16, %2	\n\t"
       "lxvd2x		%x7, %16, %3	\n\t"

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

       "addic.		%1, %1, -32	\n\t"
       "ble		2f		\n\t"

       ".p2align	5		\n"
     "1:				\n\t"

       "xvmaddasp	32, 40, 48	\n\t"
       "lxvd2x		40, 0, %2	\n\t"
       "lxvd2x		48, 0, %3	\n\t"
       "xvmaddasp	33, 41, 49	\n\t"
       "lxvd2x		41, %10, %2	\n\t"
       "lxvd2x		49, %10, %3	\n\t"
       "xvmaddasp	34, 42, 50	\n\t"
       "lxvd2x		42, %11, %2	\n\t"
       "lxvd2x		50, %11, %3	\n\t"
       "xvmaddasp	35, 43, 51	\n\t"
       "lxvd2x		43, %12, %2	\n\t"
       "lxvd2x		51, %12, %3	\n\t"
       "xvmaddasp	36, 44, %x4	\n\t"
       "lxvd2x		44, %13, %2	\n\t"
       "lxvd2x		%x4, %13, %3	\n\t"
       "xvmaddasp	37, 45, %x5	\n\t"
       "lxvd2x		45, %14, %2	\n\t"
       "lxvd2x		%x5, %14, %3	\n\t"
       "xvmaddasp	38, 46, %x6	\n\t"
       "lxvd2x		46, %15, %2	\n\t"
       "lxvd2x		%x6, %15, %3	\n\t"
       "xvmaddasp	39, 47, %x7	\n\t"
       "lxvd2x		47, %16, %2	\n\t"
       "lxvd2x		%x7, %16, %3	\n\t"

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

       "addic.		%1, %1, -32	\n\t"
       "bgt		1b		\n"

     "2:				\n\t"

       "xvmaddasp	32, 40, 48	\n\t"
       "xvmaddasp	33, 41, 49	\n\t"
       "xvmaddasp	34, 42, 50	\n\t"
       "xvmaddasp	35, 43, 51	\n\t"
       "xvmaddasp	36, 44, %x4	\n\t"
       "xvmaddasp	37, 45, %x5	\n\t"
       "xvmaddasp	38, 46, %x6	\n\t"
       "xvmaddasp	39, 47, %x7	\n\t"

       "xvaddsp		32, 32, 33	\n\t"
       "xvaddsp		34, 34, 35	\n\t"
       "xvaddsp		36, 36, 37	\n\t"
       "xvaddsp		38, 38, 39	\n\t"

       "xvaddsp		32, 32, 34	\n\t"
       "xvaddsp		36, 36, 38	\n\t"

       "xvaddsp		32, 32, 36	\n\t"

       "xxsldwi		33, 32, 32, 2	\n\t"
       "xvaddsp		32, 32, 33	\n\t"

       "xxsldwi		33, 32, 32, 1	\n\t"
       "xvaddsp		32, 32, 33	\n\t"

       "xscvspdp	%x0, 32		\n"

     "#dot=%0 n=%1 x=%8=%2 y=%9=%3 o16=%10 o32=%11 o48=%12 o64=%13 o80=%14 o96=%15 o122=%16\n"
     "#t0=%x4 t1=%x5 t2=%x6 t3=%x7"
     :
       "=f" (dot),	// 0
       "+r" (n),	// 1
       "+b" (x),	// 2
       "+b" (y),	// 3
       "=wa" (t0),	// 4
       "=wa" (t1),	// 5
       "=wa" (t2),	// 6
       "=wa" (t3)	// 7
     :
       "m" (*x),
       "m" (*y),
       "b" (16),	// 10
       "b" (32),	// 11
       "b" (48),	// 12
       "b" (64),	// 13
       "b" (80),	// 14
       "b" (96),	// 15
       "b" (112)	// 16
     :
       "cr0",
       "vs32","vs33","vs34","vs35","vs36","vs37","vs38","vs39",
       "vs40","vs41","vs42","vs43","vs44","vs45","vs46","vs47",
       "vs48","vs49","vs50","vs51"
     );

  return dot;
}