source/common/x86/README.txt

   1 The ASM source here is directly pulled from the x264 project with two
   2 changes:
   3
   4 1 - FENC_STRIDE must be increased to 64 in x86util.asm because of HEVC's
   5     larger CU sizes
   6 2 - Because of #1, we must rebrand the functions with x265_ prefixes in
   7     x86inc.asm (private_prefix) and pixel-a.asm (mangle(x265_pixel_ssd))
   8 3 - We have modified the MMX SSD primitives to use EMMS before returning
   9 4 - We have added some new SATD block sizes for SSE3
  10
  11 Current assembly is based on x264 revision:
  12    configure: Support cygwin64
  13    Diogo Franco (Kovensky) <diogomfranco@gmail.com>
  14    2013-07-23 22:17:44 -0300