[FFmpeg-devel] [PATCH] A rather simple H.264 speed optimization

Jason Garrett-Glaser darkshikari
Mon Jul 28 17:53:27 CEST 2008

> What does gcc do with this on 32-bit platforms.  I've often seen it do
> some rather horrid things with 64-bit types there.

h264.c already uses 64-bit write combining in many many places; I'm
just extending it.

x264 uses it too, and I have never seen GCC pessimize it.  GCC
pessimizes 64-bit *arithmetic ops*, not copies.

Dark Shikari

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