+void do_loop_unrolling(ir_graph *irg)
+{ perform_irg_optimization(irg, &opt_unroll_loops); }
+
+void do_loop_inversion(ir_graph *irg)
+{ perform_irg_optimization(irg, &opt_invert_loops); }
+
+void do_loop_peeling(ir_graph *irg)
+{ perform_irg_optimization(irg, &opt_peel_loops); }