OpenBLAS/kernel/arm64/dot_kernel_sve_v8.c

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#include <arm_sve.h>
#include "common.h"

#ifdef DOUBLE
#define SV_COUNT svcntd
#define SV_TYPE svfloat64_t
#define SV_TRUE svptrue_b64
#define SV_WHILE svwhilelt_b64_s64
#define SV_DUP svdup_f64
#else
#define SV_COUNT svcntw
#define SV_TYPE svfloat32_t
#define SV_TRUE svptrue_b32
#define SV_WHILE svwhilelt_b32_s64
#define SV_DUP svdup_f32
#endif

static FLOAT dot_kernel_sve(BLASLONG n, FLOAT* x, FLOAT* y)
{
  SV_TYPE temp0_vec = SV_DUP(0.0);
  SV_TYPE temp1_vec = SV_DUP(0.0);
  SV_TYPE temp2_vec = SV_DUP(0.0);
  SV_TYPE temp3_vec = SV_DUP(0.0);
  SV_TYPE temp4_vec = SV_DUP(0.0);
  SV_TYPE temp5_vec = SV_DUP(0.0);
  SV_TYPE temp6_vec = SV_DUP(0.0);
  SV_TYPE temp7_vec = SV_DUP(0.0);

  BLASLONG i = 0;
  BLASLONG sve_size = SV_COUNT();

  while ((i + sve_size * 8 - 1) < n) {
    FLOAT *x0_ptr = x + i;
    SV_TYPE x0_vec = svld1_vnum(SV_TRUE(), x0_ptr, 0);
    SV_TYPE x1_vec = svld1_vnum(SV_TRUE(), x0_ptr, 1);
    SV_TYPE x2_vec = svld1_vnum(SV_TRUE(), x0_ptr, 2);
    SV_TYPE x3_vec = svld1_vnum(SV_TRUE(), x0_ptr, 3);
    SV_TYPE x4_vec = svld1_vnum(SV_TRUE(), x0_ptr, 4);
    SV_TYPE x5_vec = svld1_vnum(SV_TRUE(), x0_ptr, 5);
    SV_TYPE x6_vec = svld1_vnum(SV_TRUE(), x0_ptr, 6);
    SV_TYPE x7_vec = svld1_vnum(SV_TRUE(), x0_ptr, 7);

    FLOAT *y0_ptr = y + i;
    SV_TYPE y0_vec = svld1_vnum(SV_TRUE(), y0_ptr, 0);
    SV_TYPE y1_vec = svld1_vnum(SV_TRUE(), y0_ptr, 1);
    SV_TYPE y2_vec = svld1_vnum(SV_TRUE(), y0_ptr, 2);
    SV_TYPE y3_vec = svld1_vnum(SV_TRUE(), y0_ptr, 3);
    SV_TYPE y4_vec = svld1_vnum(SV_TRUE(), y0_ptr, 4);
    SV_TYPE y5_vec = svld1_vnum(SV_TRUE(), y0_ptr, 5);
    SV_TYPE y6_vec = svld1_vnum(SV_TRUE(), y0_ptr, 6);
    SV_TYPE y7_vec = svld1_vnum(SV_TRUE(), y0_ptr, 7);

    temp0_vec = svmla_x(SV_TRUE(), temp0_vec, x0_vec, y0_vec);
    temp1_vec = svmla_x(SV_TRUE(), temp1_vec, x1_vec, y1_vec);
    temp2_vec = svmla_x(SV_TRUE(), temp2_vec, x2_vec, y2_vec);
    temp3_vec = svmla_x(SV_TRUE(), temp3_vec, x3_vec, y3_vec);
    temp4_vec = svmla_x(SV_TRUE(), temp4_vec, x4_vec, y4_vec);
    temp5_vec = svmla_x(SV_TRUE(), temp5_vec, x5_vec, y5_vec);
    temp6_vec = svmla_x(SV_TRUE(), temp6_vec, x6_vec, y6_vec);
    temp7_vec = svmla_x(SV_TRUE(), temp7_vec, x7_vec, y7_vec);

    i += sve_size * 8;
  }

  if (i < n) {
    svbool_t pg0 = SV_WHILE(i + sve_size * 0, n);
    svbool_t pg1 = SV_WHILE(i + sve_size * 1, n);
    svbool_t pg2 = SV_WHILE(i + sve_size * 2, n);
    svbool_t pg3 = SV_WHILE(i + sve_size * 3, n);
    svbool_t pg4 = SV_WHILE(i + sve_size * 4, n);
    svbool_t pg5 = SV_WHILE(i + sve_size * 5, n);
    svbool_t pg6 = SV_WHILE(i + sve_size * 6, n);
    svbool_t pg7 = SV_WHILE(i + sve_size * 7, n);

    FLOAT *x0_ptr = x + i;
    SV_TYPE x0_vec = svld1_vnum(pg0, x0_ptr, 0);
    SV_TYPE x1_vec = svld1_vnum(pg1, x0_ptr, 1);
    SV_TYPE x2_vec = svld1_vnum(pg2, x0_ptr, 2);
    SV_TYPE x3_vec = svld1_vnum(pg3, x0_ptr, 3);
    SV_TYPE x4_vec = svld1_vnum(pg4, x0_ptr, 4);
    SV_TYPE x5_vec = svld1_vnum(pg5, x0_ptr, 5);
    SV_TYPE x6_vec = svld1_vnum(pg6, x0_ptr, 6);
    SV_TYPE x7_vec = svld1_vnum(pg7, x0_ptr, 7);

    FLOAT *y0_ptr = y + i;
    SV_TYPE y0_vec = svld1_vnum(pg0, y0_ptr, 0);
    SV_TYPE y1_vec = svld1_vnum(pg1, y0_ptr, 1);
    SV_TYPE y2_vec = svld1_vnum(pg2, y0_ptr, 2);
    SV_TYPE y3_vec = svld1_vnum(pg3, y0_ptr, 3);
    SV_TYPE y4_vec = svld1_vnum(pg4, y0_ptr, 4);
    SV_TYPE y5_vec = svld1_vnum(pg5, y0_ptr, 5);
    SV_TYPE y6_vec = svld1_vnum(pg6, y0_ptr, 6);
    SV_TYPE y7_vec = svld1_vnum(pg7, y0_ptr, 7);

    temp0_vec = svmla_m(pg0, temp0_vec, x0_vec, y0_vec);
    temp1_vec = svmla_m(pg1, temp1_vec, x1_vec, y1_vec);
    temp2_vec = svmla_m(pg2, temp2_vec, x2_vec, y2_vec);
    temp3_vec = svmla_m(pg3, temp3_vec, x3_vec, y3_vec);
    temp4_vec = svmla_m(pg4, temp4_vec, x4_vec, y4_vec);
    temp5_vec = svmla_m(pg5, temp5_vec, x5_vec, y5_vec);
    temp6_vec = svmla_m(pg6, temp6_vec, x6_vec, y6_vec);
    temp7_vec = svmla_m(pg7, temp7_vec, x7_vec, y7_vec);
  }

  temp0_vec = svadd_x(SV_TRUE(), temp0_vec, temp1_vec);
  temp2_vec = svadd_x(SV_TRUE(), temp2_vec, temp3_vec);
  temp4_vec = svadd_x(SV_TRUE(), temp4_vec, temp5_vec);
  temp6_vec = svadd_x(SV_TRUE(), temp6_vec, temp7_vec);
  temp0_vec = svadd_x(SV_TRUE(), temp0_vec, temp2_vec);
  temp4_vec = svadd_x(SV_TRUE(), temp4_vec, temp6_vec);
  temp0_vec = svadd_x(SV_TRUE(), temp0_vec, temp4_vec);

  return svaddv(SV_TRUE(), temp0_vec);
}