If the Chinese are considered Allies, they absolutely had genocidal intent with respect to any Japanese people remaining within their borders by the end of the war. This went both ways, obviously, the Japanese military was infamously cruel during the occupation. But if the question was "were Allied nations willing to commit genocide in territories they controlled", I would answer "at least in some cases".
And this idea American conservatives have that you can "bomb <<them>> to the stone age" whenever you have a political dispute with someone is a policy that would result in genocidal actions in the present, no matter what historians may decide about the past. You cannot advocate mass killings on a grand scale, then claim lily-white innocence when it turns out you've erased entire cultures in your bloodlust-fueled purge. No one will care, in retrospect, about the hairs they try to split about intent vs. effect. The truth is that if you're in a position where you're trying to explain why your actions weren't "technically" genocide according to Encyclopedia Britannica definition of genocide (and get angry and defensive when someone suggests using the UN's definition instead), you've already done something very, very bad, the stain of which won't be erased with a semantic debate. No one will care about your technicalities unless they already want to believe that what you did was somehow justified.