[FFmpeg-devel] [PATCH] dnxhd_mmx: prefer xmm registers below xmm6 when they are available
Sat Oct 30 22:23:01 CEST 2010
On Sat, Oct 30, 2010 at 05:40:50PM -0200, Ramiro Polla wrote:
> Instead of marking all xmm registers in the clobber list, some
> functions can use registers below xmm6, which makes it no longer an
> issue for win64. A few more patches like this one will follow.
The reason for this is that at least some code just initialized
xmm7 to 0 and reused that over multiple asm blocks.
I guess there's not much point for it now anymore though.
More information about the ffmpeg-devel