+ TODO_dump_func | TODO_verify_loops, /* todo_flags_finish */
+ 0 /* letter */
+};
+
+/* Propagation of constants using scev. */
+
+static bool
+gate_scev_const_prop (void)
+{
+ return true;
+}
+
+struct tree_opt_pass pass_scev_cprop =
+{
+ "sccp", /* name */
+ gate_scev_const_prop, /* gate */
+ scev_const_prop, /* execute */
+ NULL, /* sub */
+ NULL, /* next */
+ 0, /* static_pass_number */
+ TV_SCEV_CONST, /* tv_id */
+ PROP_cfg | PROP_ssa, /* properties_required */
+ 0, /* properties_provided */
+ 0, /* properties_destroyed */
+ 0, /* todo_flags_start */
+ TODO_dump_func | TODO_update_ssa_only_virtuals,
+ /* todo_flags_finish */
+ 0 /* letter */
+};
+
+/* Remove empty loops. */
+
+static void
+tree_ssa_empty_loop (void)
+{
+ if (!current_loops)
+ return;
+
+ remove_empty_loops (current_loops);
+}
+
+struct tree_opt_pass pass_empty_loop =
+{
+ "empty", /* name */
+ NULL, /* gate */
+ tree_ssa_empty_loop, /* execute */
+ NULL, /* sub */
+ NULL, /* next */
+ 0, /* static_pass_number */
+ TV_COMPLETE_UNROLL, /* tv_id */
+ PROP_cfg | PROP_ssa, /* properties_required */
+ 0, /* properties_provided */
+ 0, /* properties_destroyed */
+ 0, /* todo_flags_start */
+ TODO_dump_func | TODO_verify_loops, /* todo_flags_finish */