[x264-devel] Windows x64 support

[BugMaster]

On Mon, 8 Dec 2008 14:59:44 -0800, Jason Garrett-Glaser wrote:
>> Replace with what? With variables (in stack)?

> I'm referring to the fact that, in general, throughout the asm code,
> we have used xmm6 and xmm7 as registers for things like zeroes, masks,
> etc and other such global values that aren't modified during a
> function.  Thus, you can get functions that use no registers other
> than xmm0, xmm1, xmm6, and xmm7, for example.

> Obviously, this is suboptimal when xmm6 and xmm7 have to be backed up
> on the stack, so those functions should be fixed by, for example, for
> the above case, changing 6 and 7 to 2 and 3, respectively.

> This is a simple find/replace on all such functions that use very few xmmregs.

Now I understand what you mean but I don't think there is a lot of
functions that use xmm6 or xmm7 and don't already use xmm0-xmm5.