legion: making aliased and interfering region requirements a hard error for now
legion: making aliased and interfering region requirements a hard error for now

sdalton1/legion,sdalton1/legion,sdalton1/legion,StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion,sdalton1/legion,StanfordLegion/legion,StanfordLegion/legion,sdalton1/legion,StanfordLegion/legion,StanfordLegion/legion,sdalton1/legion