An ILP optimizing compiler using a region-based approach restructures a program to better reflect dynamic behavior and increase interprocedural optimization and scheduling opportunities. Regions provide the compiler with better control of the unit of compilation than traditional procedure-based compilers. In this paper, we evaluate an algorithm that incorporates partial inlining into a region-based compilation framework to achieve the optimization benefits of full inlining, with the added benefit of reduced code growth. Results are presented for a variety of common and novel metrics developed for comparison of regions, including profile homogeneity, percentage of invariant code and interprocedural scope of regions.