popcnt is used very frequently IMO. One example is Bloom filter which is used extensively in many domains. Another example is Tanimoto distance that has to be

popcnt is used very frequently IMO. One example is Bloom filter which is used extensively in many domains. Another example is Tanimoto distance that has to be super fast for computational chemistry http://www.dalkescientific.com/writings/diary/archive/2011/11/02/faster_popcount_update.html http://www.dalkescientific.com/writings/diary/archive/2011/1...