OpenBLAS/kernel/power/sbgemv_n_vsx.c

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#ifndef SBGEMV_N_VSX_C
#define SBGEMV_N_VSX_C

#include "sbgemv_common.c"

#ifndef BF16GEMV_N_X
#define BF16GEMV_N_X
#define BF16GEMV_N_8 BF16GEMV_N_VSX_8
#define BF16GEMV_N_4 BF16GEMV_N_VSX_4
#define BF16GEMV_N_2 BF16GEMV_N_VSX_2
#define BF16GEMV_N_1 BF16GEMV_N_VSX_1
#endif

#define USE_BFGEMV_8_N_VSX

static void BF16GEMV_N_VSX_1(BLASLONG n, IFLOAT **ap, IFLOAT *xo, FLOAT *y, FLOAT alpha)
{
  IFLOAT *a0;
  vec_bf16 zero = { 0, 0, 0, 0, 0, 0, 0, 0 };
  vec_f32 v_alpha = { alpha, alpha, alpha, alpha };

  a0 = ap[0];

  vec_bf16 *va0 = (vec_bf16 *)a0;

  vec_bf16 *x_bf = (vec_bf16 *)(xo);
  vec_f32 x_0 = vec_loadNHi(x_bf, 1, zero);
  x_0 *= v_alpha;

  vec_f32 v_x0 = vec_splat(x_0, 0);

  vec_f32 *v_y = (vec_f32 *)y;
  BLASLONG n8 = n / 8;
  BLASLONG i = 0;
  vec_f32 vy0[2];

  for (; i < n8; i++) {
    vec_load_pair(vy0, &v_y[(i * 2) + 0]);

    vec_load_mult2(v_x0, &va0[i], zero, vy0);

    vec_store_pair(&v_y[(i * 2) + 0], vy0);
  }

  n &= 7;
  if (n > 4) {
    BLASLONG n3 = n & 3;
    vec_loadN2_f32(vy0, &v_y[(i * 2) + 0], n3);

    vec_loadN_mult2(v_x0, &va0[i], n, zero, vy0);

    vec_storeN2_f32(vy0, &v_y[(i * 2) + 0], n3);
  } else if (n) {
    vy0[0] = vec_loadN_f32(&v_y[(i * 2) + 0], n);

    vy0[0] += vec_loadNHi_mult(&va0[i], v_x0, n, zero);

    vec_storeN_f32(vy0[0], &v_y[(i * 2) + 0], n);
  }
}

static void BF16GEMV_N_VSX_2(BLASLONG n, IFLOAT **ap, IFLOAT *xo, FLOAT *y, FLOAT alpha)
{
  IFLOAT *a0, *a1;
  vec_bf16 zero = { 0, 0, 0, 0, 0, 0, 0, 0 };
  vec_f32 v_alpha = { alpha, alpha, alpha, alpha };

  a0 = ap[0];
  a1 = ap[1];

  vec_bf16 *va0 = (vec_bf16 *)a0;
  vec_bf16 *va1 = (vec_bf16 *)a1;

  vec_bf16 *x_bf = (vec_bf16 *)(xo);
  vec_f32 x_0 = vec_loadNHi(x_bf, 2, zero);
  x_0 *= v_alpha;

  vec_f32 v_x0 = vec_splat(x_0, 0);
  vec_f32 v_x1 = vec_splat(x_0, 1);

  vec_f32 *v_y = (vec_f32 *)y;
  BLASLONG n8 = n / 8;
  BLASLONG i = 0;
  vec_f32 vy0[2];

  for (; i < n8; i++) {
    vec_load_pair(vy0, &v_y[(i * 2) + 0]);

    vec_load_mult2(v_x0, &va0[i], zero, vy0);
    vec_load_mult2(v_x1, &va1[i], zero, vy0);

    vec_store_pair(&v_y[(i * 2) + 0], vy0);
  }

  n &= 7;
  if (n > 4) {
    BLASLONG n3 = n & 3;
    vec_loadN2_f32(vy0, &v_y[(i * 2) + 0], n3);

    vec_loadN_mult2(v_x0, &va0[i], n, zero, vy0);
    vec_loadN_mult2(v_x1, &va1[i], n, zero, vy0);

    vec_storeN2_f32(vy0, &v_y[(i * 2) + 0], n3);
  } else if (n) {
    vy0[0] = vec_loadN_f32(&v_y[(i * 2) + 0], n);

    vy0[0] += vec_loadNHi_mult(&va0[i], v_x0, n, zero);
    vy0[0] += vec_loadNHi_mult(&va1[i], v_x1, n, zero);

    vec_storeN_f32(vy0[0], &v_y[(i * 2) + 0], n);
  }
}

static void BF16GEMV_N_VSX_4(BLASLONG n, IFLOAT **ap, IFLOAT *xo, FLOAT *y, FLOAT alpha)
{
  IFLOAT *a0, *a1, *a2, *a3;
  vec_bf16 zero = { 0, 0, 0, 0, 0, 0, 0, 0 };
  vec_f32 v_alpha = { alpha, alpha, alpha, alpha };

  a0 = ap[0];
  a1 = ap[1];
  a2 = ap[2];
  a3 = ap[3];

  vec_bf16 *va0 = (vec_bf16 *)a0;
  vec_bf16 *va1 = (vec_bf16 *)a1;
  vec_bf16 *va2 = (vec_bf16 *)a2;
  vec_bf16 *va3 = (vec_bf16 *)a3;

  vec_bf16 *x_bf = (vec_bf16 *)(xo);
  vec_f32 x_0 = vec_loadNHi(x_bf, 4, zero);
  x_0 *= v_alpha;

  vec_f32 v_x0 = vec_splat(x_0, 0);
  vec_f32 v_x1 = vec_splat(x_0, 1);
  vec_f32 v_x2 = vec_splat(x_0, 2);
  vec_f32 v_x3 = vec_splat(x_0, 3);

  vec_f32 *v_y = (vec_f32 *)y;
  BLASLONG n8 = n / 8;
  BLASLONG i = 0;
  vec_f32 vy0[2];

  for (; i < n8; i++) {
    vec_load_pair(vy0, &v_y[(i * 2) + 0]);

    vec_load_mult2(v_x0, &va0[i], zero, vy0);
    vec_load_mult2(v_x1, &va1[i], zero, vy0);
    vec_load_mult2(v_x2, &va2[i], zero, vy0);
    vec_load_mult2(v_x3, &va3[i], zero, vy0);

    vec_store_pair(&v_y[(i * 2) + 0], vy0);
  }

  n &= 7;
  if (n > 4) {
    BLASLONG n3 = n & 3;
    vec_loadN2_f32(vy0, &v_y[(i * 2) + 0], n3);

    vec_loadN_mult2(v_x0, &va0[i], n, zero, vy0);
    vec_loadN_mult2(v_x1, &va1[i], n, zero, vy0);
    vec_loadN_mult2(v_x2, &va2[i], n, zero, vy0);
    vec_loadN_mult2(v_x3, &va3[i], n, zero, vy0);

    vec_storeN2_f32(vy0, &v_y[(i * 2) + 0], n3);
  } else if (n) {
    vy0[0] = vec_loadN_f32(&v_y[(i * 2) + 0], n);

    vy0[0] += vec_loadNHi_mult(&va0[i], v_x0, n, zero);
    vy0[0] += vec_loadNHi_mult(&va1[i], v_x1, n, zero);
    vy0[0] += vec_loadNHi_mult(&va2[i], v_x2, n, zero);
    vy0[0] += vec_loadNHi_mult(&va3[i], v_x3, n, zero);

    vec_storeN_f32(vy0[0], &v_y[(i * 2) + 0], n);
  }
}

#ifdef USE_BFGEMV_8_N_VSX
static void BF16GEMV_N_VSX_8(BLASLONG n, IFLOAT **ap, IFLOAT *xo, FLOAT *y, BLASLONG lda4, FLOAT alpha)
{
  IFLOAT *a0, *a1, *a2, *a3, *b0, *b1, *b2, *b3;
  vec_bf16 zero = { 0, 0, 0, 0, 0, 0, 0, 0 };
  vec_f32 v_alpha = { alpha, alpha, alpha, alpha };

  a0 = ap[0];
  a1 = ap[1];
  a2 = ap[2];
  a3 = ap[3];
  b0 = a0 + lda4;
  b1 = a1 + lda4;
  b2 = a2 + lda4;
  b3 = a3 + lda4;

  vec_bf16 *va0 = (vec_bf16 *)a0;
  vec_bf16 *va1 = (vec_bf16 *)a1;
  vec_bf16 *va2 = (vec_bf16 *)a2;
  vec_bf16 *va3 = (vec_bf16 *)a3;
  vec_bf16 *vb0 = (vec_bf16 *)b0;
  vec_bf16 *vb1 = (vec_bf16 *)b1;
  vec_bf16 *vb2 = (vec_bf16 *)b2;
  vec_bf16 *vb3 = (vec_bf16 *)b3;

  vec_bf16 *x_bf = (vec_bf16 *)(xo);
  vec_bf16 x_in = (vec_bf16)vec_load_vec(x_bf);
  vec_f32 x_0 = BF16_HI(x_in, zero);
  vec_f32 x_1 = BF16_LO(x_in, zero);
  x_0 *= v_alpha;
  x_1 *= v_alpha;

  vec_f32 v_x0 = vec_splat(x_0, 0);
  vec_f32 v_x1 = vec_splat(x_0, 1);
  vec_f32 v_x2 = vec_splat(x_0, 2);
  vec_f32 v_x3 = vec_splat(x_0, 3);
  vec_f32 v_x4 = vec_splat(x_1, 0);
  vec_f32 v_x5 = vec_splat(x_1, 1);
  vec_f32 v_x6 = vec_splat(x_1, 2);
  vec_f32 v_x7 = vec_splat(x_1, 3);

  vec_f32 *v_y = (vec_f32 *)y;
  BLASLONG n8 = n / 8;
  BLASLONG i = 0;
  vec_f32 vy0[2];

  for (; i < n8; i++) {
    vec_load_pair(vy0, &v_y[(i * 2) + 0]);

    vec_load_mult2(v_x0, &va0[i], zero, vy0);
    vec_load_mult2(v_x1, &va1[i], zero, vy0);
    vec_load_mult2(v_x2, &va2[i], zero, vy0);
    vec_load_mult2(v_x3, &va3[i], zero, vy0);
    vec_load_mult2(v_x4, &vb0[i], zero, vy0);
    vec_load_mult2(v_x5, &vb1[i], zero, vy0);
    vec_load_mult2(v_x6, &vb2[i], zero, vy0);
    vec_load_mult2(v_x7, &vb3[i], zero, vy0);

    vec_store_pair(&v_y[(i * 2) + 0], vy0);
  }

  n &= 7;
  if (n > 4) {
    BLASLONG n3 = n & 3;
    vec_loadN2_f32(vy0, &v_y[(i * 2) + 0], n3);

    vec_loadN_mult2(v_x0, &va0[i], n, zero, vy0);
    vec_loadN_mult2(v_x1, &va1[i], n, zero, vy0);
    vec_loadN_mult2(v_x2, &va2[i], n, zero, vy0);
    vec_loadN_mult2(v_x3, &va3[i], n, zero, vy0);
    vec_loadN_mult2(v_x4, &vb0[i], n, zero, vy0);
    vec_loadN_mult2(v_x5, &vb1[i], n, zero, vy0);
    vec_loadN_mult2(v_x6, &vb2[i], n, zero, vy0);
    vec_loadN_mult2(v_x7, &vb3[i], n, zero, vy0);

    vec_storeN2_f32(vy0, &v_y[(i * 2) + 0], n3);
  } else if (n) {
    vy0[0] = vec_loadN_f32(&v_y[(i * 2) + 0], n);

    vy0[0] += vec_loadNHi_mult(&va0[i], v_x0, n, zero);
    vy0[0] += vec_loadNHi_mult(&va1[i], v_x1, n, zero);
    vy0[0] += vec_loadNHi_mult(&va2[i], v_x2, n, zero);
    vy0[0] += vec_loadNHi_mult(&va3[i], v_x3, n, zero);
    vy0[0] += vec_loadNHi_mult(&vb0[i], v_x4, n, zero);
    vy0[0] += vec_loadNHi_mult(&vb1[i], v_x5, n, zero);
    vy0[0] += vec_loadNHi_mult(&vb2[i], v_x6, n, zero);
    vy0[0] += vec_loadNHi_mult(&vb3[i], v_x7, n, zero);

    vec_storeN_f32(vy0[0], &v_y[(i * 2) + 0], n);
  }
}
#endif

#include "sbgemv_n.c"
#endif