+ /* Perform loop optimalizations. It might be better to do them a bit
+ sooner, but we want the profile feedback to work more efficiently. */
+ if (optimize > 0
+ && (flag_unswitch_loops
+ || flag_peel_loops
+ || flag_unroll_loops))
+ {
+ struct loops *loops;
+ timevar_push (TV_LOOP);
+ open_dump_file (DFI_loop2, decl);
+ if (rtl_dump_file)
+ dump_flow_info (rtl_dump_file);
+
+ loops = loop_optimizer_init (rtl_dump_file);
+
+ if (loops)
+ {
+ /* The optimalizations: */
+ if (flag_unswitch_loops)
+ unswitch_loops (loops);
+
+ if (flag_peel_loops || flag_unroll_loops)
+ unroll_and_peel_loops (loops,
+ (flag_peel_loops ? UAP_PEEL : 0) |
+ (flag_unroll_loops ? UAP_UNROLL : 0) |
+ (flag_unroll_all_loops ? UAP_UNROLL_ALL : 0));
+
+ loop_optimizer_finalize (loops, rtl_dump_file);
+ }
+
+ cleanup_cfg (CLEANUP_EXPENSIVE);
+ delete_trivially_dead_insns (insns, max_reg_num ());
+ reg_scan (insns, max_reg_num (), 0);
+ if (rtl_dump_file)
+ dump_flow_info (rtl_dump_file);
+ close_dump_file (DFI_loop2, print_rtl_with_bb, get_insns ());
+ timevar_pop (TV_LOOP);
+ ggc_collect ();
+ }
+
+ if (flag_rerun_cse_after_loop)