[FFmpeg-devel] [PATCH 1/2] lavu/intmath.h: Add msvc/icl ctzll optimisations.

[James Almer]

On 10/16/2015 3:03 AM, Matt Oliver wrote:
> Take 3. Updated the patch based on comments so that it correctly supports
> msvc, icl and icc

LGTM.

How does the assembly ICL generates for the x86_32 version look like?
ICC seems to create a branch for the v == 0 check, so a handwritten
inline assembly version using cmov for the cases where HAVE_FAST_CMOV
is true may be faster.
Not for this patch anyway. Just something to check and benchmark later
if anyone cares enough about it.