There was an article on Slashdot specifically on this question a few days ago: https://news.slashdot.org/story/18/10/28/220233/in-a-crash-should-self-driving-cars-save-passengers-or-pedestrians-2-million-people-weigh-in
Short summary: save people over animals, save young people over old, and save more people versus fewer. Further responses tended to be culturally dependent - as in, I'd guess India and the Mid-East prefer men to women, while in Western cultures we tend to save "women and childen first" and so on. (Of course Slashdot itself is a summary with a link to the original post.)
But as someone else just said, currently the car just sees a soft obstruction (or several thereof) that may be moving, not people, genders, race, etc. - and has to decide immediately whether to brake, swerve, crash into something or just run them over, so the debate is theoretical until sensors get much better,
