No. These are two different codes that address two different areas. The scope one does not overlap with the scope of the other.
The International Residential Code is a stand-alone residential code that establishes minimum regulations one- and two-family dwellings of three stories or less. It brings together all building, plumbing, mechanical, fuel gas, energy and electrical provisions for one- and two-family residences.
The International Building Code covers all buildings except 3-story one- and two-family dwellings and townhomes. This comprehensive code features time-tested safety concepts, structural, and fire and life safety provisions covering means of egress, interior finish requirements, comprehensive roof provisions, seismic engineering provisions, innovative construction technology, occupancy classifications, and the latest industry standards in material design. It is founded on broad-based principles that make possible the use of new materials and new building designs.
A city may adopt both, one or neither of the codes. Simply by adopting one, the other is not automatically adopted.