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
  14 #include "be_t.h"
  15 #include "benumb_t.h"
  16
  17 int numbering_irn_data_offset = 0;
  18 int numbering_irg_data_offset = 0;
  19
  20 FIRM_IMPL1(get_irn_graph_nr, int, const ir_node *)
  21 FIRM_IMPL1(get_irn_block_nr, int, const ir_node *)
  22 FIRM_IMPL1(get_block_graph_nr, int, const ir_node *)
  23 FIRM_IMPL1(get_block_node_count, int, const ir_node *)
  24 FIRM_IMPL1(get_graph_block_count, int, const ir_graph *)
  25 FIRM_IMPL2(get_irn_for_graph_nr, ir_node *, const ir_graph *, int)
  26
  27 static phase_t phase_numbering_info = {
  28         "Numbering", 0
  29 };
  30
  31 const phase_t *phase_numbering = &phase_numbering_info;
  32
  33
  34 static void numbering_walker(ir_node *irn, void *env)
  35 {
  36         irg_numbering_t *graph_nr = get_irg_numbering(get_irn_irg(irn));
  37         numbering_t *irn_nr = get_irn_numbering(irn);
  38
  39         if(is_Block(irn))
  40                 irn_nr->global_nr = graph_nr->local_nr++;
  41         else {
  42                 numbering_t *block_nr = get_irn_numbering(get_nodes_block(irn));
  43                 irn_nr->local_nr = block_nr->local_nr++;
  44                 irn_nr->global_nr = graph_nr->global_nr++;
  45         }
  46 }
  47
  48 static void reverse_walker(ir_node *irn, void *env)
  49 {
  50         if(!is_Block(irn)) {
  51                 ir_node **map = env;
  52                 map[get_irn_graph_nr(irn)] = irn;
  53         }
  54 }
  55
  56 void be_numbering(ir_graph *irg)
  57 {
  58         ir_node **reverse_map;
  59
  60         irg_walk_graph(irg, numbering_walker, NULL, NULL);
  61
  62         reverse_map = calloc(get_graph_node_count(irg), sizeof(*reverse_map));
  63         irg_walk_graph(irg, reverse_walker, NULL, reverse_map);
  64
  65         get_irg_numbering(irg)->reverse_map = reverse_map;
  66 }
  67
  68 void be_numbering_done(ir_graph *irg)
  69 {
  70         free(get_irg_numbering(irg)->reverse_map);
  71 }
  72
  73 void be_numbering_init(void)
  74 {
  75         phase_register(&phase_numbering_info);
  76         numbering_irn_data_offset = register_additional_node_data(sizeof(numbering_t));
  77         numbering_irg_data_offset = register_additional_graph_data(sizeof(irg_numbering_t));
  78 }