DOS ain't dead

MMX moves (Developers)

posted by FFK , 16.02.2009, 23:04

try to copy 8 bytes aligned 64 bytes blocks with this

movq mm0,ds:[esi];
movq mm1,ds:[esi+32];
movq mm2,ds:[esi+8];
movq mm3,ds:[esi+40];
movq mm4,ds:[esi+16];
movq mm5,ds:[esi+48];
movq mm6,ds:[esi+24];
movq mm7,ds:[esi+56];

movq es:[edi],mm0
movq es:[edi+32],mm1
movq es:[edi+8],mm2
movq es:[edi+40],mm3
movq es:[edi+16],mm4
movq es:[edi+48],mm5
movq es:[edi+24],mm6
movq es:[edi+56],mm7

at least ESI or EDI should be 8 bytes aligned, and if both aligned you will get max speed

Complete thread:

• MMX moves - Laaca, 16.02.2009, 21:20 (Developers)
  • MMX moves - rr, 16.02.2009, 21:34
  • MMX moves - Japheth, 16.02.2009, 22:05
    • MMX moves - rr, 16.02.2009, 22:11
      • MMX moves - Japheth, 17.02.2009, 13:52
        • MMX moves - Laaca, 17.02.2009, 16:29
          • MMX moves - Japheth, 17.02.2009, 17:16
            • MMX moves - Laaca, 17.02.2009, 18:56
      • MMX moves - marcov, 18.02.2009, 09:55
  • MMX moves - FFK, 16.02.2009, 23:04
  • MMX moves - Rugxulo, 17.02.2009, 00:54
  • MMX moves - FFK, 17.02.2009, 21:37
    • MMX moves - Rugxulo, 18.02.2009, 00:48
    • MMX moves - Japheth, 18.02.2009, 09:08
      • MMX moves - FFK, 18.02.2009, 09:44