regent: Fix for index launch codegen.
regent: Fix for index launch codegen.

noahdesu/legion,chuckatkins/legion,sdalton1/legion,sdalton1/legion,StanfordLegion/legion,StanfordLegion/legion,noahdesu/legion,StanfordLegion/legion,noahdesu/legion,chuckatkins/legion,sdalton1/legion,chuckatkins/legion,sdalton1/legion,noahdesu/legion,StanfordLegion/legion,StanfordLegion/legion,chuckatkins/legion,StanfordLegion/legion,chuckatkins/legion,chuckatkins/legion,StanfordLegion/legion,noahdesu/legion,sdalton1/legion,StanfordLegion/legion,chuckatkins/legion,sdalton1/legion