OpenBLAS/kernel/generic/zgemm_tcopy_4_sandy.c

/*****************************************************************************
  Copyright (c) 2011,2012 Lab of Parallel Software and Computational Science,ISCAS
  All rights reserved.

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  modification, are permitted provided that the following conditions are
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the documentation and/or other materials provided with the
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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 A PARTICULAR PURPOSE 
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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;
   FLOAT *dest1,*dest2;
   ii = col&-4;
   ii = ii*(2*row);
   dest2 = dest+ii;
   ii = col&-2;
   ii = ii*(2*row);
   dest1 = dest+ii;
   for (j=0; j<row/4; j+=1) 
     {
        src0 = src;
        src1 = src0+2*srcdim;
        src2 = src1+2*srcdim;
        src3 = src2+2*srcdim;
        src = src3+2*srcdim;
        dest0 = dest;
        ii = (4<<3);
        dest = dest+ii;
        for (i=0; i<col/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];
             dest0[8] = src1[0];
             dest0[9] = src1[1];
             dest0[10] = src1[2];
             dest0[11] = src1[3];
             dest0[12] = src1[4];
             dest0[13] = src1[5];
             dest0[14] = src1[6];
             dest0[15] = src1[7];
             dest0[16] = src2[0];
             dest0[17] = src2[1];
             dest0[18] = src2[2];
             dest0[19] = src2[3];
             dest0[20] = src2[4];
             dest0[21] = src2[5];
             dest0[22] = src2[6];
             dest0[23] = src2[7];
             dest0[24] = src3[0];
             dest0[25] = src3[1];
             dest0[26] = src3[2];
             dest0[27] = src3[3];
             dest0[28] = src3[4];
             dest0[29] = src3[5];
             dest0[30] = src3[6];
             dest0[31] = src3[7];
             src0 = src0+8;
             src1 = src1+8;
             src2 = src2+8;
             src3 = src3+8;
             ii = (row<<3);
             dest0 = dest0+ii;
          }
        if (col&2)  
          {
             dest2[0] = src0[0];
             dest2[1] = src0[1];
             dest2[2] = src0[2];
             dest2[3] = src0[3];
             dest2[4] = src1[0];
             dest2[5] = src1[1];
             dest2[6] = src1[2];
             dest2[7] = src1[3];
             dest2[8] = src2[0];
             dest2[9] = src2[1];
             dest2[10] = src2[2];
             dest2[11] = src2[3];
             dest2[12] = src3[0];
             dest2[13] = src3[1];
             dest2[14] = src3[2];
             dest2[15] = src3[3];
             src0 = src0+4;
             src1 = src1+4;
             src2 = src2+4;
             src3 = src3+4;
             dest2 = dest2+16;
          }
        if (col&1)  
          {
             dest1[0] = src0[0];
             dest1[1] = src0[1];
             dest1[2] = src1[0];
             dest1[3] = src1[1];
             dest1[4] = src2[0];
             dest1[5] = src2[1];
             dest1[6] = src3[0];
             dest1[7] = src3[1];
             src0 = src0+2;
             src1 = src1+2;
             src2 = src2+2;
             src3 = src3+2;
             dest1 = dest1+8;
          }
     }
   if (row&2)  
     {
        src0 = src;
        src1 = src0+2*srcdim;
        src = src1+2*srcdim;
        dest0 = dest;
        ii = (2<<3);
        dest = dest+ii;
        for (i=0; i<col/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];
             dest0[8] = src1[0];
             dest0[9] = src1[1];
             dest0[10] = src1[2];
             dest0[11] = src1[3];
             dest0[12] = src1[4];
             dest0[13] = src1[5];
             dest0[14] = src1[6];
             dest0[15] = src1[7];
             src0 = src0+8;
             src1 = src1+8;
             ii = (row<<3);
             dest0 = dest0+ii;
          }
        if (col&2)  
          {
             dest2[0] = src0[0];
             dest2[1] = src0[1];
             dest2[2] = src0[2];
             dest2[3] = src0[3];
             dest2[4] = src1[0];
             dest2[5] = src1[1];
             dest2[6] = src1[2];
             dest2[7] = src1[3];
             src0 = src0+4;
             src1 = src1+4;
             dest2 = dest2+8;
          }
        if (col&1)  
          {
             dest1[0] = src0[0];
             dest1[1] = src0[1];
             dest1[2] = src1[0];
             dest1[3] = src1[1];
             src0 = src0+2;
             src1 = src1+2;
             dest1 = dest1+4;
          }
     }
   if (row&1)  
     {
        src0 = src;
        src = src0+2*srcdim;
        dest0 = dest;
        ii = (1<<3);
        dest = dest+ii;
        for (i=0; i<col/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 = (row<<3);
             dest0 = dest0+ii;
          }
        if (col&2)  
          {
             dest2[0] = src0[0];
             dest2[1] = src0[1];
             dest2[2] = src0[2];
             dest2[3] = src0[3];
             src0 = src0+4;
             dest2 = dest2+4;
          }
        if (col&1)  
          {
             dest1[0] = src0[0];
             dest1[1] = src0[1];
             src0 = src0+2;
             dest1 = dest1+2;
          }
     }

   return 0;
}