minio/pkg/encoding/erasure/ec-highlevel-func.c

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  modification, are permitted provided that the following conditions
  are met:
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      contributors may be used to endorse or promote products derived
      from this software without specific prior written permission.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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#include <limits.h>
#include <stdint.h>
#include "ec-code.h"
#include "ec-ctypes.h"

void ec_init_tables(int k, int rows, uint8_t *a, uint8_t *g_tbls)
{
        int i, j;

        for (i = 0; i < rows; i++) {
                for (j = 0; j < k; j++) {
                        gf_vect_mul_init(*a++, g_tbls);
                        g_tbls += 32;
                }
        }
}

#if __WORDSIZE == 64 || _WIN64 || __x86_64__
void ec_encode_data_sse(int len, int k, int rows, uint8_t *g_tbls, uint8_t **data,
                        uint8_t **coding)
{

        if (len < 16) {
                ec_encode_data_base(len, k, rows, g_tbls, data, coding);
                return;
        }

        while (rows >= 4) {
                gf_4vect_dot_prod_sse(len, k, g_tbls, data, coding);
                g_tbls += 4 * k * 32;
                coding += 4;
                rows -= 4;
        }
        switch (rows) {
        case 3:
                gf_3vect_dot_prod_sse(len, k, g_tbls, data, coding);
                break;
        case 2:
                gf_2vect_dot_prod_sse(len, k, g_tbls, data, coding);
                break;
        case 1:
                gf_vect_dot_prod_sse(len, k, g_tbls, data, *coding);
                break;
        case 0:
                break;
        }

}

void ec_encode_data_avx(int len, int k, int rows, uint8_t *g_tbls, uint8_t **data,
                        uint8_t **coding)
{

        if (len < 16) {
                ec_encode_data_base(len, k, rows, g_tbls, data, coding);
                return;
        }

        while (rows >= 4) {
                gf_4vect_dot_prod_avx(len, k, g_tbls, data, coding);
                g_tbls += 4 * k * 32;
                coding += 4;
                rows -= 4;
        }
        switch (rows) {
        case 3:
                gf_3vect_dot_prod_avx(len, k, g_tbls, data, coding);
                break;
        case 2:
                gf_2vect_dot_prod_avx(len, k, g_tbls, data, coding);
                break;
        case 1:
                gf_vect_dot_prod_avx(len, k, g_tbls, data, *coding);
                break;
        case 0:
                break;
        }

}

void ec_encode_data_avx2(int len, int k, int rows, uint8_t *g_tbls, uint8_t **data,
                         uint8_t **coding)
{

        if (len < 32) {
                ec_encode_data_base(len, k, rows, g_tbls, data, coding);
                return;
        }

        while (rows >= 4) {
                gf_4vect_dot_prod_avx2(len, k, g_tbls, data, coding);
                g_tbls += 4 * k * 32;
                coding += 4;
                rows -= 4;
        }
        switch (rows) {
        case 3:
                gf_3vect_dot_prod_avx2(len, k, g_tbls, data, coding);
                break;
        case 2:
                gf_2vect_dot_prod_avx2(len, k, g_tbls, data, coding);
                break;
        case 1:
                gf_vect_dot_prod_avx2(len, k, g_tbls, data, *coding);
                break;
        case 0:
                break;
        }

}

#endif //__WORDSIZE == 64 || _WIN64 || __x86_64__

struct slver {
        UINT16 snum;
        UINT8 ver;
        UINT8 core;
};

// Version info
struct slver ec_init_tables_slver_00010068;
struct slver ec_init_tables_slver = { 0x0068, 0x01, 0x00 };

struct slver ec_encode_data_sse_slver_00020069;
struct slver ec_encode_data_sse_slver = { 0x0069, 0x02, 0x00 };