OpenBLAS/kernel/generic/zgemm_ncopy_4_sandy.c

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

int CNAME(BLASLONG row,BLASLONG col,FLOAT* src,BLASLONG srcdim,FLOAT* dest)
{
   BLASLONG i,j;
   BLASLONG idx=0;
   BLASLONG ii;
   FLOAT *src0,*src1,*src2,*src3,*dest0;
   for (j=0; j<col/4; j+=1)
     {
        src0 = src;
        src1 = src0+2*srcdim;
        src2 = src1+2*srcdim;
        src3 = src2+2*srcdim;
        src = src3+2*srcdim;
        dest0 = dest;
        ii = (row<<3);
        dest = dest+ii;
        for (i=0; i<row/4; i+=1)
          {
             dest0[0] = src0[0];
             dest0[1] = src0[1];
             dest0[2] = src1[0];
             dest0[3] = src1[1];
             dest0[4] = src2[0];
             dest0[5] = src2[1];
             dest0[6] = src3[0];
             dest0[7] = src3[1];
             dest0[8] = src0[2];
             dest0[9] = src0[3];
             dest0[10] = src1[2];
             dest0[11] = src1[3];
             dest0[12] = src2[2];
             dest0[13] = src2[3];
             dest0[14] = src3[2];
             dest0[15] = src3[3];
             dest0[16] = src0[4];
             dest0[17] = src0[5];
             dest0[18] = src1[4];
             dest0[19] = src1[5];
             dest0[20] = src2[4];
             dest0[21] = src2[5];
             dest0[22] = src3[4];
             dest0[23] = src3[5];
             dest0[24] = src0[6];
             dest0[25] = src0[7];
             dest0[26] = src1[6];
             dest0[27] = src1[7];
             dest0[28] = src2[6];
             dest0[29] = src2[7];
             dest0[30] = src3[6];
             dest0[31] = src3[7];
             src0 = src0+8;
             src1 = src1+8;
             src2 = src2+8;
             src3 = src3+8;
             ii = (4<<3);
             dest0 = dest0+ii;
          }
        if (row&2)
          {
             dest0[0] = src0[0];
             dest0[1] = src0[1];
             dest0[2] = src1[0];
             dest0[3] = src1[1];
             dest0[4] = src2[0];
             dest0[5] = src2[1];
             dest0[6] = src3[0];
             dest0[7] = src3[1];
             dest0[8] = src0[2];
             dest0[9] = src0[3];
             dest0[10] = src1[2];
             dest0[11] = src1[3];
             dest0[12] = src2[2];
             dest0[13] = src2[3];
             dest0[14] = src3[2];
             dest0[15] = src3[3];
             src0 = src0+4;
             src1 = src1+4;
             src2 = src2+4;
             src3 = src3+4;
             ii = (2<<3);
             dest0 = dest0+ii;
          }
        if (row&1)
          {
             dest0[0] = src0[0];
             dest0[1] = src0[1];
             dest0[2] = src1[0];
             dest0[3] = src1[1];
             dest0[4] = src2[0];
             dest0[5] = src2[1];
             dest0[6] = src3[0];
             dest0[7] = src3[1];
             src0 = src0+2;
             src1 = src1+2;
             src2 = src2+2;
             src3 = src3+2;
             ii = (1<<3);
             dest0 = dest0+ii;
          }
     }
   if (col&2)
     {
        src0 = src;
        src1 = src0+2*srcdim;
        src = src1+2*srcdim;
        dest0 = dest;
        ii = (row<<2);
        dest = dest+ii;
        for (i=0; i<row/4; i+=1)
          {
             dest0[0] = src0[0];
             dest0[1] = src0[1];
             dest0[2] = src1[0];
             dest0[3] = src1[1];
             dest0[4] = src0[2];
             dest0[5] = src0[3];
             dest0[6] = src1[2];
             dest0[7] = src1[3];
             dest0[8] = src0[4];
             dest0[9] = src0[5];
             dest0[10] = src1[4];
             dest0[11] = src1[5];
             dest0[12] = src0[6];
             dest0[13] = src0[7];
             dest0[14] = src1[6];
             dest0[15] = src1[7];
             src0 = src0+8;
             src1 = src1+8;
             ii = (4<<2);
             dest0 = dest0+ii;
          }
        if (row&2)
          {
             dest0[0] = src0[0];
             dest0[1] = src0[1];
             dest0[2] = src1[0];
             dest0[3] = src1[1];
             dest0[4] = src0[2];
             dest0[5] = src0[3];
             dest0[6] = src1[2];
             dest0[7] = src1[3];
             src0 = src0+4;
             src1 = src1+4;
             ii = (2<<2);
             dest0 = dest0+ii;
          }
        if (row&1)
          {
             dest0[0] = src0[0];
             dest0[1] = src0[1];
             dest0[2] = src1[0];
             dest0[3] = src1[1];
             src0 = src0+2;
             src1 = src1+2;
             ii = (1<<2);
             dest0 = dest0+ii;
          }
     }
   if (col&1)
     {
        src0 = src;
        src = src0+2*srcdim;
        dest0 = dest;
        ii = (row<<1);
        dest = dest+ii;
        for (i=0; i<row/4; i+=1)
          {
             dest0[0] = src0[0];
             dest0[1] = src0[1];
             dest0[2] = src0[2];
             dest0[3] = src0[3];
             dest0[4] = src0[4];
             dest0[5] = src0[5];
             dest0[6] = src0[6];
             dest0[7] = src0[7];
             src0 = src0+8;
             ii = (4<<1);
             dest0 = dest0+ii;
          }
        if (row&2)
          {
             dest0[0] = src0[0];
             dest0[1] = src0[1];
             dest0[2] = src0[2];
             dest0[3] = src0[3];
             src0 = src0+4;
             ii = (2<<1);
             dest0 = dest0+ii;
          }
        if (row&1)
          {
             dest0[0] = src0[0];
             dest0[1] = src0[1];
             src0 = src0+2;
             ii = (1<<1);
             dest0 = dest0+ii;
          }
     }
   return 0;
}