Update docs regarding writing optimizations:
authorRonald S. Bultje <rsbultje@gmail.com>
Fri, 24 Sep 2010 14:01:09 +0000 (14:01 +0000)
committerRonald S. Bultje <rsbultje@gmail.com>
Fri, 24 Sep 2010 14:01:09 +0000 (14:01 +0000)
commitd801f1c8482151cd9f504469965793bd00852556
tree3c6beb8e1be4d9fc2a6899f236d130ed16c803fd
parent32eba9f27e72d4d9471d1f312620cb73b6272443
Update docs regarding writing optimizations:
- mention clobber-marking of xmm registers,
- some notes on external vs. inline asm, including tips on which to use for
   what situation and to not rewrite+improve in the same patch (as with C code)
- some more best-practice guidelines

See "[PATCH] update doc/optimization.txt" thread on ML.

Originally committed as revision 25170 to svn://svn.ffmpeg.org/ffmpeg/trunk
doc/optimization.txt