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

   1 /*
   2  * Author:      Matthias Braun
   3  * Date:                13.12.2006
   4  * Copyright:   (c) Universitaet Karlsruhe
   5  * Licence:     This file protected by GPL -  GNU GENERAL PUBLIC LICENSE.
   6  */
   7 #ifdef HAVE_CONFIG_H
   8 #include "config.h"
   9 #endif
  10
  11 #include "execfreq.h"
  12 #include "beirg_t.h"
  13
  14 void be_assure_liveness(be_irg_t *birg)
  15 {
  16         if(birg->lv != NULL)
  17                 return;
  18
  19         birg->lv = be_liveness(birg->irg);
  20 }
  21
  22 void be_invalidate_liveness(be_irg_t *birg)
  23 {
  24         if(birg->lv == NULL)
  25                 return;
  26
  27         be_liveness_free(birg->lv);
  28         birg->lv = NULL;
  29 }
  30
  31 void be_assure_dom_front(be_irg_t *birg)
  32 {
  33         if(birg->dom_front != NULL)
  34                 return;
  35
  36         birg->dom_front = be_compute_dominance_frontiers(birg->irg);
  37 }
  38
  39 void be_invalidate_dom_front(be_irg_t *birg)
  40 {
  41         if(birg->dom_front == NULL)
  42                 return;
  43
  44         be_free_dominance_frontiers(birg->dom_front);
  45         birg->dom_front = NULL;
  46 }
  47
  48 void be_free_birg(be_irg_t *birg)
  49 {
  50         free_execfreq(birg->exec_freq);
  51         birg->exec_freq = NULL;
  52
  53         if(birg->dom_front != NULL) {
  54                 be_free_dominance_frontiers(birg->dom_front);
  55                 birg->dom_front = NULL;
  56         }
  57         if(birg->lv != NULL) {
  58                 be_liveness_free(birg->lv);
  59                 birg->lv = NULL;
  60         }
  61 }