Based on x264 code
d59fcda x86: add detection for Bit Manipulation Instruction sets
libavutil/cpu.c | 6 ++++++
libavutil/cpu.h | 2 ++
libavutil/x86/cpu.c | 17 +++++++++++------
3 files changed, 19 insertions(+), 6 deletions(-)
Upstream: git.libav.org