[x264-devel] [PATCH] Add emulation for previously unsupported XOP fma instructions.

[BugMaster]

On Sat, 22 Feb 2014 23:26:05 -0300, James Almer wrote:
> Allow non-destructive emulation when the fourth argument
> is the same as the first by specifying a fifth argument
> to be used as temporary.

Hi. IMHO we shouldn't change this in x264 as we don't really use/need
such non-destructive emulation here (I am not sure were ever will). In
x264 we only need to warn about use of non-supported variants of args.
Why don't you simply add this non-destructive macroses into ffmpeg's
x86util.asm (as I understand ffmpeg was the initial reason why you
wrote this patch) which is anyway not in sync with x264's one (so no
need port them to x264)?