X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fir%2Firgraph.c;h=810007bcb21dec3f69abbf4622cbc308f97ac299;hb=e1c33a238578342a072e1c95ff12eefe6d0acd37;hp=f9454a1e8bb9260a6c303db21dc27b6ef8f7a17f;hpb=b5120954ba6ccf704d26ba6ac78a0339824df886;p=libfirm

diff --git a/ir/ir/irgraph.c b/ir/ir/irgraph.c
index f9454a1e8..810007bcb 100644
--- a/ir/ir/irgraph.c
+++ b/ir/ir/irgraph.c
@@ -37,6 +37,8 @@
 #include "iredges_t.h"
 #include "type_t.h"
 
+#define INITIAL_IDX_IRN_MAP_SIZE 1024
+
 /**
  * Indicates, whether additional data can be registered to graphs.
  * If set to 1, this is not possible anymore.
@@ -138,6 +140,10 @@ new_r_ir_graph (entity *ent, int n_loc)
 
   edges_init_graph(res);
 
+  /* initialize the idx->node map. */
+  res->idx_irn_map = NEW_ARR_F(ir_node *, INITIAL_IDX_IRN_MAP_SIZE);
+  memset(res->idx_irn_map, 0, INITIAL_IDX_IRN_MAP_SIZE * sizeof(res->idx_irn_map[0]));
+
   /* inform statistics here, as blocks will be already build on this graph */
   hook_new_graph(res, ent);
 
@@ -267,6 +273,10 @@ ir_graph *new_const_code_irg(void) {
 
   res = alloc_graph();
 
+  /* initialize the idx->node map. */
+  res->idx_irn_map = NEW_ARR_F(ir_node *, INITIAL_IDX_IRN_MAP_SIZE);
+  memset(res->idx_irn_map, 0, INITIAL_IDX_IRN_MAP_SIZE * sizeof(res->idx_irn_map[0]));
+
   /* inform statistics here, as blocks will be already build on this graph */
   hook_new_graph(res, NULL);