+
+ir_graph *
+new_ir_graph (entity *ent, int n_loc)
+{
+ ir_graph *res = new_r_ir_graph (ent, n_loc);
+ add_irp_irg(res); /* remember this graph global. */
+ return res;
+}
+
+/* Make a rudimentary ir graph for the constant code.
+ Must look like a correct irg, spare everything else. */
+ir_graph *new_const_code_irg(void) {
+ ir_graph *res;
+ ir_node *end, *start_block, *start, *projX;
+
+ res = alloc_graph();
+
+ /* inform statistics here, as blocks will be already build on this graph */
+ hook_new_graph(res, NULL);
+
+ current_ir_graph = res;
+ res->n_loc = 1; /* Only the memory. */
+ res->visited = 0; /* visited flag, for the ir walker */
+ res->block_visited = 0; /* visited flag, for the 'block'-walker */
+#if USE_EXPLICIT_PHI_IN_STACK
+ res->Phi_in_stack = NULL;
+#endif
+ res->kind = k_ir_graph;
+ res->obst = xmalloc (sizeof(*res->obst));
+ obstack_init (res->obst);
+ res->extbb_obst = NULL;
+
+ res->last_node_idx = 0;
+
+ res->phase_state = phase_building;
+ res->irg_pinned_state = op_pin_state_pinned;
+ res->extblk_state = ir_extblk_info_none;
+
+ res->value_table = new_identities (); /* value table for global value
+ numbering for optimizing use in
+ iropt.c */
+ res->ent = NULL;
+ res->frame_type = NULL;
+
+ /* -- The end block -- */
+ set_irg_end_block (res, new_immBlock());
+ end = new_End();
+ set_irg_end (res, end);
+ set_irg_end_reg (res, end);
+ set_irg_end_except(res, end);
+ mature_immBlock(get_cur_block()); /* mature the end block */
+
+ /* -- The start block -- */
+ start_block = new_immBlock();
+ set_irg_start_block(res, start_block);
+ set_irg_bad (res, new_ir_node (NULL, res, start_block, op_Bad, mode_T, 0, NULL));
+ set_irg_no_mem (res, new_ir_node (NULL, res, start_block, op_NoMem, mode_M, 0, NULL));
+ start = new_Start();
+ set_irg_start (res, start);
+
+ /* Proj results of start node */
+ set_irg_initial_mem(res, new_Proj(start, mode_M, pn_Start_M));
+ projX = new_Proj(start, mode_X, pn_Start_X_initial_exec);
+ add_immBlock_pred(start_block, projX);
+ mature_immBlock (start_block); /* mature the start block */
+
+ add_immBlock_pred(new_immBlock(), projX);
+ mature_immBlock (get_cur_block()); /* mature the 'body' block for expressions */
+
+ /* Set the visited flag high enough that the blocks will never be visited. */
+ set_irn_visited(get_cur_block(), -1);
+ set_Block_block_visited(get_cur_block(), -1);
+ set_Block_block_visited(start_block, -1);
+ set_irn_visited(start_block, -1);
+ set_irn_visited(get_irg_bad(res), -1);
+ set_irn_visited(get_irg_no_mem(res), -1);
+
+ res->phase_state = phase_high;
+
+ return res;
+}
+
+/* Defined in iropt.c */
+void del_identities (pset *value_table);
+