nsz Git - libfirm/blob - ir/be/benumb.c

   1 /**
   2  * Numbering implementation.
   3  * @author Sebastian Hack
   4  * @date 8.12.2004
   5  */
   6
   7 #include <stdlib.h>
   8
   9 #include "impl.h"
  10
  11 #include "irnode_t.h"
  12 #include "irgwalk.h"
  13 #include "xmalloc.h"
  14
  15 #include "be_t.h"
  16 #include "benumb_t.h"
  17
  18 int numbering_irn_data_offset = 0;
  19 int numbering_irg_data_offset = 0;
  20
  21 FIRM_IMPL1(get_irn_graph_nr, int, const ir_node *)
  22 FIRM_IMPL1(get_irn_block_nr, int, const ir_node *)
  23 FIRM_IMPL1(get_block_graph_nr, int, const ir_node *)
  24 FIRM_IMPL1(get_block_node_count, int, const ir_node *)
  25 FIRM_IMPL1(get_graph_block_count, int, const ir_graph *)
  26 FIRM_IMPL2(get_irn_for_graph_nr, ir_node *, const ir_graph *, int)
  27
  28 static void numbering_walker(ir_node *irn, void *env)
  29 {
  30         irg_numbering_t *graph_nr = get_irg_numbering(get_irn_irg(irn));
  31         numbering_t *irn_nr = get_irn_numbering(irn);
  32
  33         if(is_Block(irn))
  34                 irn_nr->global_nr = graph_nr->local_nr++;
  35         else {
  36                 numbering_t *block_nr = get_irn_numbering(get_nodes_block(irn));
  37                 irn_nr->local_nr = block_nr->local_nr++;
  38                 irn_nr->global_nr = graph_nr->global_nr++;
  39         }
  40 }
  41
  42 static void reverse_walker(ir_node *irn, void *env)
  43 {
  44         if(!is_Block(irn)) {
  45                 ir_node **map = env;
  46                 map[get_irn_graph_nr(irn)] = irn;
  47         }
  48 }
  49
  50 void be_numbering(ir_graph *irg)
  51 {
  52         ir_node **reverse_map;
  53
  54         irg_walk_graph(irg, numbering_walker, NULL, NULL);
  55
  56         reverse_map = xcalloc(get_graph_node_count(irg), sizeof(reverse_map[0]));
  57         irg_walk_graph(irg, reverse_walker, NULL, reverse_map);
  58
  59         get_irg_numbering(irg)->reverse_map = reverse_map;
  60 }
  61
  62 void be_numbering_done(ir_graph *irg)
  63 {
  64         free(get_irg_numbering(irg)->reverse_map);
  65 }
  66
  67 void be_numbering_init(void)
  68 {
  69         numbering_irn_data_offset = register_additional_node_data(sizeof(numbering_t));
  70         numbering_irg_data_offset = register_additional_graph_data(sizeof(irg_numbering_t));
  71 }