Added small helper function

[r7432]

diff --git a/ir/common/survive_dce.c b/ir/common/survive_dce.c
index 37a83f7..c574a25 100644 (file)
--- a/ir/common/survive_dce.c
+++ b/ir/common/survive_dce.c
@@ -72,5 +72,14 @@ void free_survive_dce(survive_dce_t *sd)
 
 void survive_dce_register_irn(survive_dce_t *sd, ir_node **place)
 {
-       pmap_insert(sd->places, *place, (void *) place);
+       if(*place != NULL)
+               pmap_insert(sd->places, *place, (void *) place);
+}
+
+void survive_dce_register_pmap(survive_dce_t *sd, pmap *m)
+{
+       pmap_entry *ent;
+
+       for(ent = pmap_first(m); ent; ent = pmap_next(m))
+               survive_dce_register_irn(sd, (ir_node **) &ent->value);
 }

diff --git a/ir/common/survive_dce.h b/ir/common/survive_dce.h
index 3c0c205..803b788 100644 (file)
--- a/ir/common/survive_dce.h
+++ b/ir/common/survive_dce.h
@@ -5,6 +5,8 @@
 #ifndef _FIRM_SURVIVE_DCE_H
 #define _FIRM_SURVIVE_DCE_H
 
+#include "pmap.h"
+
 typedef struct _survive_dce_t survive_dce_t;
 
 /**
@@ -26,4 +28,13 @@ void           free_survive_dce(survive_dce_t *sd);
  */
 void survive_dce_register_irn(survive_dce_t *sd, ir_node **place);
 
+/**
+ * Register a map to survive the dce.
+ * All value parts of the map's entries are assumed to be ir node pointers
+ * and are registered with survive_dce_register_irn().
+ * @param sd    The survive dce private data.
+ * @param m     The map.
+ */
+void survive_dce_register_pmap(survive_dce_t *sd, pmap *m);
+
 #endif