YASM does not support %ifempty even though it is in the official
NASM documentation and supported since NASM 2.02.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
This issue is actually already fixed in NASM, however it will be a
bit before it arrives everywhere.
This should work as a temporary work-around.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
We keep INIT_AVX (for backwards compatibility). 3arg AVX ops with
a memory arg can only have it in src2, whereas SSE emulation of
3arg prefers to have it in src1 (i.e. the mov). So, if the op is
symmetric and the wrong one is memory, swap them.
