OpenBLAS/kernel/power/sbgemv_t_vsx.c

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#ifndef SBGEMV_T_VSX_C
#define SBGEMV_T_VSX_C

#include "sbgemv_common.c"

#ifndef BF16GEMV_T_X
#define BF16GEMV_T_X
#define BF16GEMV_T_8 BF16GEMV_T_VSX_8
#define BF16GEMV_T_4 BF16GEMV_T_VSX_4
#define BF16GEMV_T_2 BF16GEMV_T_VSX_2
#define BF16GEMV_T_1 BF16GEMV_T_VSX_1
#endif

#define USE_BFGEMV_8_T_VSX

static void BF16GEMV_T_VSX_1(BLASLONG n, BLASLONG lda, IFLOAT *ap, IFLOAT *x, FLOAT *y, FLOAT alpha)
{
  IFLOAT *a0;
  vec_bf16 *va0, *v_x;
  vec_f32 temp0 = { 0, 0, 0, 0 };
  vec_bf16 zero = { 0, 0, 0, 0, 0, 0, 0, 0 };
  vec_f32 inp[2];

  a0 = ap;
  va0 = (vec_bf16 *)a0;
  v_x = (vec_bf16 *)x;
  BLASLONG n8 = n / 8;
  BLASLONG i = 0;

  for (; i < n8; i++) {
    vec_load_vec2(&v_x[i], inp, zero);

    temp0 += vec_load_mult(&va0[i], inp, zero);
  }

  n &= 7;
  if (n > 4) {
    vec_loadN_vec2(&v_x[i], inp, n, zero);

    temp0 += vec_loadN_mult(&va0[i], inp, n, zero);
  } else if (n) {
    inp[0] = vec_loadNHi(&v_x[i], n, zero);

    temp0 += vec_loadNHi_mult(&va0[i], inp[0], n, zero);
  }

  y[0] += (alpha * (temp0[0] + temp0[1] + temp0[2] + temp0[3]));
}

static void BF16GEMV_T_VSX_2(BLASLONG n, BLASLONG lda, IFLOAT *ap, IFLOAT *x, FLOAT *y, FLOAT alpha)
{
  IFLOAT *a0, *a1;
  vec_bf16 *va0, *va1, *v_x;
  vec_f32 temp0 = { 0, 0, 0, 0 };
  vec_f32 temp1 = { 0, 0, 0, 0 };
  vec_bf16 zero = { 0, 0, 0, 0, 0, 0, 0, 0 };
  vec_f32 inp[2];

  a0 = ap;
  a1 = ap + lda;
  va0 = (vec_bf16 *)a0;
  va1 = (vec_bf16 *)a1;
  v_x = (vec_bf16 *)x;
  BLASLONG n8 = n / 8;
  BLASLONG i = 0;

  for (; i < n8; i++) {
    vec_load_vec2(&v_x[i], inp, zero);

    temp0 += vec_load_mult(&va0[i], inp, zero);
    temp1 += vec_load_mult(&va1[i], inp, zero);
  }

  n &= 7;
  if (n > 4) {
    vec_loadN_vec2(&v_x[i], inp, n, zero);

    temp0 += vec_loadN_mult(&va0[i], inp, n, zero);
    temp1 += vec_loadN_mult(&va1[i], inp, n, zero);
  } else if (n) {
    inp[0] = vec_loadNHi(&v_x[i], n, zero);

    temp0 += vec_loadNHi_mult(&va0[i], inp[0], n, zero);
    temp1 += vec_loadNHi_mult(&va1[i], inp[0], n, zero);
  }

  y[0] += (alpha * (temp0[0] + temp0[1] + temp0[2] + temp0[3]));
  y[1] += (alpha * (temp1[0] + temp1[1] + temp1[2] + temp1[3]));
}

static void BF16GEMV_T_VSX_4(BLASLONG n, BLASLONG lda, IFLOAT *ap, IFLOAT *x, FLOAT *y, FLOAT alpha)
{
  IFLOAT *a0, *a1, *a2, *a3;
  vec_bf16 *va0, *va1, *va2, *va3, *v_x;
  vec_f32 temp0 = { 0, 0, 0, 0 };
  vec_f32 temp1 = { 0, 0, 0, 0 };
  vec_f32 temp2 = { 0, 0, 0, 0 };
  vec_f32 temp3 = { 0, 0, 0, 0 };
  vec_bf16 zero = { 0, 0, 0, 0, 0, 0, 0, 0 };
  vec_f32 inp[2];

  a0 = ap;
  a1 = ap + lda;
  a2 = a1 + lda;
  a3 = a2 + lda;
  va0 = (vec_bf16 *)a0;
  va1 = (vec_bf16 *)a1;
  va2 = (vec_bf16 *)a2;
  va3 = (vec_bf16 *)a3;
  v_x = (vec_bf16 *)x;
  BLASLONG n8 = n / 8;
  BLASLONG i = 0;

  for (; i < n8; i++) {
    vec_load_vec2(&v_x[i], inp, zero);

    temp0 += vec_load_mult(&va0[i], inp, zero);
    temp1 += vec_load_mult(&va1[i], inp, zero);
    temp2 += vec_load_mult(&va2[i], inp, zero);
    temp3 += vec_load_mult(&va3[i], inp, zero);
  }

  n &= 7;
  if (n > 4) {
    vec_loadN_vec2(&v_x[i], inp, n, zero);

    temp0 += vec_loadN_mult(&va0[i], inp, n, zero);
    temp1 += vec_loadN_mult(&va1[i], inp, n, zero);
    temp2 += vec_loadN_mult(&va2[i], inp, n, zero);
    temp3 += vec_loadN_mult(&va3[i], inp, n, zero);
  } else if (n) {
    inp[0] = vec_loadNHi(&v_x[i], n, zero);

    temp0 += vec_loadNHi_mult(&va0[i], inp[0], n, zero);
    temp1 += vec_loadNHi_mult(&va1[i], inp[0], n, zero);
    temp2 += vec_loadNHi_mult(&va2[i], inp[0], n, zero);
    temp3 += vec_loadNHi_mult(&va3[i], inp[0], n, zero);
  }

  vec_f32 t0, t1, t2, t3;
  vec_f32 a = { alpha, alpha, alpha, alpha };
  vec_f32 *v_y = (vec_f32 *) y;

  t0 = vec_mergeh(temp0, temp2);
  t1 = vec_mergel(temp0, temp2);
  t2 = vec_mergeh(temp1, temp3);
  t3 = vec_mergel(temp1, temp3);
  temp0 = vec_mergeh(t0, t2);
  temp1 = vec_mergel(t0, t2);
  temp2 = vec_mergeh(t1, t3);
  temp3 = vec_mergel(t1, t3);
  temp0 += temp1 + temp2 + temp3;

  v_y[0] += (a * temp0);
}

#ifdef USE_BFGEMV_8_T_VSX
static void BF16GEMV_T_VSX_8(BLASLONG n, BLASLONG lda, IFLOAT *ap, IFLOAT *x, FLOAT *y, FLOAT alpha)
{
  IFLOAT *a0, *a1, *a2, *a3, *a4, *a5, *a6, *a7;
  vec_bf16 *va0, *va1, *va2, *va3, *va4, *va5, *va6, *va7, *v_x;
  vec_f32 temp0 = { 0, 0, 0, 0 };
  vec_f32 temp1 = { 0, 0, 0, 0 };
  vec_f32 temp2 = { 0, 0, 0, 0 };
  vec_f32 temp3 = { 0, 0, 0, 0 };
  vec_f32 temp4 = { 0, 0, 0, 0 };
  vec_f32 temp5 = { 0, 0, 0, 0 };
  vec_f32 temp6 = { 0, 0, 0, 0 };
  vec_f32 temp7 = { 0, 0, 0, 0 };
  vec_bf16 zero = { 0, 0, 0, 0, 0, 0, 0, 0 };
  vec_f32 inp[2], inp0[2], inp1[2], inp2[2], inp3[2], inp4[2], inp5[2], inp6[2], inp7[2];

  BLASLONG lda4 = lda << 2;
  a0 = ap;
  a1 = ap + lda;
  a2 = a1 + lda;
  a3 = a2 + lda;
  a4 = a0 + lda4;
  a5 = a1 + lda4;
  a6 = a2 + lda4;
  a7 = a3 + lda4;
  va0 = (vec_bf16 *)a0;
  va1 = (vec_bf16 *)a1;
  va2 = (vec_bf16 *)a2;
  va3 = (vec_bf16 *)a3;
  va4 = (vec_bf16 *)a4;
  va5 = (vec_bf16 *)a5;
  va6 = (vec_bf16 *)a6;
  va7 = (vec_bf16 *)a7;
  v_x = (vec_bf16 *)x;
  BLASLONG n8 = n / 8;
  BLASLONG i = 0;

  for (; i < n8; i++) {
    vec_load_vec2(&v_x[i], inp, zero);
    vec_load_vec2(&va0[i], inp0, zero);
    vec_load_vec2(&va1[i], inp1, zero);
    vec_load_vec2(&va2[i], inp2, zero);
    vec_load_vec2(&va3[i], inp3, zero);
    vec_load_vec2(&va4[i], inp4, zero);
    vec_load_vec2(&va5[i], inp5, zero);
    vec_load_vec2(&va6[i], inp6, zero);
    vec_load_vec2(&va7[i], inp7, zero);

    temp0 += (inp[0] * inp0[0]);
    temp1 += (inp[0] * inp1[0]);
    temp2 += (inp[0] * inp2[0]);
    temp3 += (inp[0] * inp3[0]);
    temp4 += (inp[0] * inp4[0]);
    temp5 += (inp[0] * inp5[0]);
    temp6 += (inp[0] * inp6[0]);
    temp7 += (inp[0] * inp7[0]);
    temp0 += (inp[1] * inp0[1]);
    temp1 += (inp[1] * inp1[1]);
    temp2 += (inp[1] * inp2[1]);
    temp3 += (inp[1] * inp3[1]);
    temp4 += (inp[1] * inp4[1]);
    temp5 += (inp[1] * inp5[1]);
    temp6 += (inp[1] * inp6[1]);
    temp7 += (inp[1] * inp7[1]);
  }

  n &= 7;
  if (n > 4) {
    vec_loadN_vec2(&v_x[i], inp, n, zero);
    vec_loadN_vec2(&va0[i], inp0, n, zero);
    vec_loadN_vec2(&va1[i], inp1, n, zero);
    vec_loadN_vec2(&va2[i], inp2, n, zero);
    vec_loadN_vec2(&va3[i], inp3, n, zero);
    vec_loadN_vec2(&va4[i], inp4, n, zero);
    vec_loadN_vec2(&va5[i], inp5, n, zero);
    vec_loadN_vec2(&va6[i], inp6, n, zero);
    vec_loadN_vec2(&va7[i], inp7, n, zero);

    temp0 += (inp[0] * inp0[0]);
    temp1 += (inp[0] * inp1[0]);
    temp2 += (inp[0] * inp2[0]);
    temp3 += (inp[0] * inp3[0]);
    temp4 += (inp[0] * inp4[0]);
    temp5 += (inp[0] * inp5[0]);
    temp6 += (inp[0] * inp6[0]);
    temp7 += (inp[0] * inp7[0]);
    temp0 += (inp[1] * inp0[1]);
    temp1 += (inp[1] * inp1[1]);
    temp2 += (inp[1] * inp2[1]);
    temp3 += (inp[1] * inp3[1]);
    temp4 += (inp[1] * inp4[1]);
    temp5 += (inp[1] * inp5[1]);
    temp6 += (inp[1] * inp6[1]);
    temp7 += (inp[1] * inp7[1]);
  } else if (n) {
    inp[0] = vec_loadNHi(&v_x[i], n, zero);

    temp0 += vec_loadNHi_mult(&va0[i], inp[0], n, zero);
    temp1 += vec_loadNHi_mult(&va1[i], inp[0], n, zero);
    temp2 += vec_loadNHi_mult(&va2[i], inp[0], n, zero);
    temp3 += vec_loadNHi_mult(&va3[i], inp[0], n, zero);
    temp4 += vec_loadNHi_mult(&va4[i], inp[0], n, zero);
    temp5 += vec_loadNHi_mult(&va5[i], inp[0], n, zero);
    temp6 += vec_loadNHi_mult(&va6[i], inp[0], n, zero);
    temp7 += vec_loadNHi_mult(&va7[i], inp[0], n, zero);
  }

  vec_f32 t0, t1, t2, t3, t10, t11, t12, t13;
  vec_f32 a = { alpha, alpha, alpha, alpha };
  vec_f32 *v_y = (vec_f32 *) y;

  t0 = vec_mergeh(temp0, temp2);
  t1 = vec_mergel(temp0, temp2);
  t2 = vec_mergeh(temp1, temp3);
  t3 = vec_mergel(temp1, temp3);
  temp0 = vec_mergeh(t0, t2);
  temp1 = vec_mergel(t0, t2);
  temp2 = vec_mergeh(t1, t3);
  temp3 = vec_mergel(t1, t3);
  temp0 += temp1 + temp2 + temp3;

  t10 = vec_mergeh(temp4, temp6);
  t11 = vec_mergel(temp4, temp6);
  t12 = vec_mergeh(temp5, temp7);
  t13 = vec_mergel(temp5, temp7);
  temp4 = vec_mergeh(t10, t12);
  temp5 = vec_mergel(t10, t12);
  temp6 = vec_mergeh(t11, t13);
  temp7 = vec_mergel(t11, t13);
  temp4 += temp5 + temp6 + temp7;

  vec_load_pair(inp, v_y);
  inp[0] += (a * temp0);
  inp[1] += (a * temp4);
  vec_store_pair(v_y, inp);
}
#endif

#include "sbgemv_t.c"
#endif